Merge branch 'time-filter-posix-tz' into time-filter-posix-tz-cpptest

.agents/skills/code-review/SKILL.md

@@ -1,116 +0,0 @@
----
-name: code-review
-description: Review guidance for ESPHome pull requests. Use this when reviewing a pull request that changes ESPHome Python, C++, or component code, to check it against the project's coding conventions, embedded-systems memory rules, testing requirements, and breaking-change policy.
----
-
-# Reviewing ESPHome pull requests
-
-ESPHome parses YAML into C++ firmware for memory-constrained microcontrollers
-(ESP32, ESP8266, RP2040, LibreTiny). Review changes with that in mind: RAM and
-flash are scarce, and code runs unattended for months.
-
-`AGENTS.md` in the repository root is the full contributor guide and the
-authority when it disagrees with this summary. The developer documentation at
-https://developers.esphome.io explains the component lifecycle and the reasoning
-behind these rules. This skill lists the concrete things worth flagging in a
-review; read `AGENTS.md` for the detail behind any item.
-
-Only raise findings that the diff actually introduces or changes. Do not ask for
-drive-by cleanup of pre-existing code the PR did not touch.
-
-## Memory and embedded constraints (highest value)
-
-Heap allocation after `setup()` is treated as a reliability bug, not a
-performance nit, because it fragments a small shared heap. Flag:
-
-- New heap allocation on a hot path or after setup that could be avoided.
-- `std::vector` where the size is known at compile time (use `std::array`, or
-  `StaticVector<T, N>` when a `push_back` API is needed) or fixed at runtime
-  init (use `FixedVector<T>`).
-- Listener / child-entity registration lists stored as `std::vector`; these have
-  a compile-time-known count and should use `cg.slot_counter()` plus
-  `StaticVector`.
-- `std::vector<uint8_t>` for a byte buffer that never grows: prefer
-  `std::unique_ptr<uint8_t[]>` or `std::array`.
-- `std::map` / `std::set` / `std::unordered_map` for small datasets (1-16
-  elements): a `std::vector` of a small struct with linear search is lighter.
-- `std::deque` anywhere: it allocates 512-byte blocks and should be avoided.
-- `std::string` storing a value set once from config: prefer `StringRef` (the
-  literal already lives in flash).
-- `std::string` / `std::to_string` / string-returning helpers on hot paths where
-  a buffer or view API exists.
-
-## C++ conventions
-
-- Include what you use: a file referencing a symbol must include the header that
-  declares it, even if it currently arrives transitively. New or changed uses of
-  a symbol need the matching include.
-- Prefix all member access with `this->`.
-- Naming: `lower_snake_case` for functions/methods/variables, `UpperCamelCase`
-  for classes/structs/enums, `UPPER_SNAKE_CASE` for namespace-scope constants,
-  trailing underscore on protected/private fields.
-- `enum class` values must be prefixed with the enum name in `UPPER_SNAKE_CASE`
-  (e.g. `UARTFlushResult::UART_FLUSH_RESULT_SUCCESS`). Bare names like `SUCCESS`,
-  `FAIL`, or `OK` collide with SDK macros on some platforms and break the build.
-- Prefer `const`/`enum` over `#define`; `#define` is only for conditional
-  compilation and code-generation sizes.
-- Never call `millis()` in a `loop()` body; use
-  `App.get_loop_component_start_time()`. A rate-limit gate below ~16 ms (the loop
-  period) does nothing.
-- Pick the timing primitive by cadence: gated `loop()` under 250 ms,
-  `set_interval` at 500 ms and above.
-- Do not override a base method to return the value it already returns (e.g.
-  `get_setup_priority()` returning `setup_priority::DATA`).
-- Wrap string literals passed as printf `%s` args in `LOG_STR_LITERAL()`.
-- Required, invariant dependencies should be constructor parameters, not setters.
-- Callback registration methods must be templated (`template<typename F>`), not
-  typed as `std::function`, so lightweight forwarders avoid a heap allocation.
-- Two-space indent, `using` over `typedef`, wrap at 120 columns.
-
-## Python conventions
-
-- Type-annotate every new function signature (params and return), new dataclass
-  fields, and new module-level variables. Import `ConfigType` from
-  `esphome.types`.
-- Use the walrus operator to avoid a double lookup, e.g.
-  `if (blah := config.get(CONF_BLAH)) is not None:`.
-- Reuse existing validators from `config_validation.py` (`cv.rename_key`,
-  `cv.has_exactly_one_key`, etc.) via `cv.All(...)` instead of hand-rolling.
-- `esphome/const.py` is frozen: no new `CONF_` constants there. Define them in
-  the component's own `.py`, or in `esphome/components/const/__init__.py` when
-  shared. The same constant defined in three or more component files fails CI.
-- State that must persist during code generation goes in `CORE.data` namespaced
-  under the component `DOMAIN` (a `@dataclass`), not module-level mutable globals.
-- Prefer callback-based triggers via `build_callback_automation()`; only use a
-  `Trigger<Ts...>` subclass when the forwarder needs mutable state.
-
-## Testing and coverage
-
-- New and changed lines and branches need test coverage, including defensive
-  early-returns, error paths, and no-op guards. A mocked-out function is not
-  covered; exercise the real call path too.
-- Component YAML tests live in `tests/components/<component>/`. Never define
-  buses (uart, i2c, spi, modbus) directly in a test file: pull them from
-  `tests/test_build_components/common/` through dict-style `packages:` so CI can
-  group builds. List-style packages or top-level merge keys block grouping.
-- Config-only checks use the `validate.*.yaml` prefix; compiled checks use
-  `test.*.yaml`.
-
-## Breaking changes and public API
-
-- Base classes under `esphome/core/` and documented config options are public
-  API. Undocumented `public` members of a component are internal.
-- A breaking change needs justification, a migration path in the PR description,
-  and a deprecation window where feasible (`ESPDEPRECATED` in C++,
-  `cv.rename_key(..., removed_in=...)` in Python). Changing a codegen-injected
-  lambda signature is not a breaking change.
-
-## Process and PR hygiene
-
-- PR titles start with a `[tag]` prefix: the component name (e.g. `[uart] ...`)
-  or `[core]` for shared code.
-- Prose in docs, comments, and commit messages should be plain English. Keep
-  inline comments short and only where the code is not self-explanatory; do not
-  restate what the code says.
-- Verify the PR fills out `.github/PULL_REQUEST_TEMPLATE.md` and adds
-  `CODEOWNERS` entries for a new component.

.claude/settings.json

@@ -1,16 +0,0 @@
-{
-  "hooks": {
-    "SessionStart": [
-      {
-        "hooks": [
-          {
-            "type": "command",
-            "command": "d=\"${CLAUDE_PROJECT_DIR:-.}\"; [ -x \"$d/venv/bin/python\" ] || { mkdir -p \"$d/.temp\"; env -u VIRTUAL_ENV \"$d/script/setup\" >\"$d/.temp/setup.log\" 2>&1 || echo '{\"systemMessage\":\"script/setup failed; see .temp/setup.log\"}'; }",
-            "statusMessage": "Setting up dev environment (script/setup)...",
-            "timeout": 900
-          }
-        ]
-      }
-    ]
-  }
-}

.claude/skills

@@ -1 +0,0 @@
-../.agents/skills

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -9,29 +9,6 @@ body:
         If you have a feature request or enhancement, please [request them here instead][fr].
 
         [fr]: https://github.com/orgs/esphome/discussions
-  - type: markdown
-    attributes:
-      value: |
-        ## Use of AI in bug reports
-
-        AI tools are good at carrying out well-defined tasks, but they are not good at troubleshooting.
-        Please do NOT paste an AI-generated wall of text into the issue template - if the AI hasn't solved
-        your problem, its wild guesses are not likely to help.
-
-        Please DO include your own words and observations, compile/boot logs, and
-        especially a minimal reproducible example of your YAML configuration that demonstrates the problem.
-
-        It is however quite acceptable to use AI to translate your *own* report,
-        if you aren't a competent English speaker.
-
-        If you really think it will be useful to include an AI's analysis, preferably wrap it in a `<details>` block which will be collapsed by default.
-
-        If you are using AI to help solve a problem, rather than asking it to speculate about what the problem is,
-        it can be more useful to ask it to create a step-by-step troubleshooting procedure.
-        AI is also useful for generating boilerplate code, such as a minimal reproducible example of your YAML
-        configuration that demonstrates the problem.
-
-        Used properly, AI can be a useful tool to help you solve your problem, but don't let it get in the way.
   - type: textarea
     validations:
       required: true

.github/actions/build-image/action.yaml

@@ -42,7 +42,7 @@ runs:
 
     - name: Build and push to ghcr by digest
       id: build-ghcr
-      uses: docker/build-push-action@c3c9e263c25d99ce0380d002d59b67737d91b0dc # v7.4.0
+      uses: docker/build-push-action@53b7df96c91f9c12dcc8a07bcb9ccacbed38856a # v7.3.0
       env:
         DOCKER_BUILD_SUMMARY: false
         DOCKER_BUILD_RECORD_UPLOAD: false
@@ -67,7 +67,7 @@ runs:
 
     - name: Build and push to dockerhub by digest
       id: build-dockerhub
-      uses: docker/build-push-action@c3c9e263c25d99ce0380d002d59b67737d91b0dc # v7.4.0
+      uses: docker/build-push-action@53b7df96c91f9c12dcc8a07bcb9ccacbed38856a # v7.3.0
       env:
         DOCKER_BUILD_SUMMARY: false
         DOCKER_BUILD_RECORD_UPLOAD: false

.github/actions/cache-clang-tidy-idedata/action.yml

@@ -1,50 +0,0 @@
-name: Cache clang-tidy idedata
-description: >
-  Cache the clang-tidy idedata and the headers it references under .temp
-  (headers only, about 30MB per env). Run after restore-python and cache-esp-idf.
-inputs:
-  environment:
-    description: 'clang-tidy environment (e.g. esp32-idf-tidy).'
-    required: true
-runs:
-  using: composite
-  steps:
-    - name: Compute cache key
-      id: key
-      shell: bash
-      run: |
-        . venv/bin/activate
-        [ -n "${{ inputs.environment }}" ] || { echo "::error::cache-clang-tidy-idedata: 'environment' input is empty"; exit 1; }
-        hash=$(python -c 'import sys; sys.path.insert(0, "script"); from clang_tidy_hash import idedata_cache_hash; print(idedata_cache_hash("${{ inputs.environment }}"))')
-        pyver=$(python -c 'import platform; print(platform.python_version())')
-        # Generating idedata is what installs ESP-IDF; never skip it over a missing
-        # install. This also skips the save, so a dev run that installs ESP-IDF
-        # warms the idedata cache on the next run.
-        if [ -d ~/.esphome-idf/frameworks ]; then
-          echo "skip=false" >> "$GITHUB_OUTPUT"
-        else
-          echo "ESP-IDF install missing, not using the clang-tidy idedata cache"
-          echo "skip=true" >> "$GITHUB_OUTPUT"
-        fi
-        echo "key=${{ runner.os }}-tidy-idedata-${{ inputs.environment }}-$hash-py$pyver" >> "$GITHUB_OUTPUT"
-        {
-          echo "path<<EOF"
-          printf '%s\n' '.temp/idedata-*.json' '.temp/idedata-*.hash'
-          printf '.temp/**/*.%s\n' h hpp hh hxx inc inl ipp tpp
-          echo "EOF"
-        } >> "$GITHUB_OUTPUT"
-    # Mirror cache-esp-idf: write on dev, restore-only on PRs. The post-step
-    # save only runs when the job succeeded, so a failed generation is never saved.
-    # Extend the extension list if a component ships extensionless headers.
-    - name: Cache clang-tidy idedata (write on dev)
-      if: (github.ref == 'refs/heads/dev' || contains(github.event.pull_request.labels.*.name, 'ci-cache-write')) && steps.key.outputs.skip != 'true'
-      uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
-      with:
-        path: ${{ steps.key.outputs.path }}
-        key: ${{ steps.key.outputs.key }}
-    - name: Cache clang-tidy idedata (restore-only off dev)
-      if: github.ref != 'refs/heads/dev' && !contains(github.event.pull_request.labels.*.name, 'ci-cache-write') && steps.key.outputs.skip != 'true'
-      uses: actions/cache/restore@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
-      with:
-        path: ${{ steps.key.outputs.path }}
-        key: ${{ steps.key.outputs.key }}

.github/actions/cache-esp-idf/action.yml

@@ -26,9 +26,6 @@ runs:
       # The native-IDF version is pinned in code, not in any file that feeds the
       # other cache keys, so resolve it explicitly. Keying on it means the cache
       # invalidates on a version bump (actions/cache never overwrites a key).
-      # Also key on the Python version: the cached IDF venv links to the
-      # runner's toolcache interpreter and is reinstalled every run after a
-      # runner image bump.
       id: version
       shell: bash
       run: |
@@ -39,32 +36,19 @@ runs:
           version=$(python -c 'from esphome.components.esp32 import ESP_IDF_FRAMEWORK_VERSION_LOOKUP as L; print(L["recommended"])')
         fi
         echo "version=$version" >> "$GITHUB_OUTPUT"
-        echo "python-version=$(python -c 'import platform; print(platform.python_version())')" >> "$GITHUB_OUTPUT"
     # Mirror the adjacent PlatformIO cache: only dev-branch runs write the
     # shared cache (so it lives in the default-branch scope readable by all
     # PRs), and PRs are restore-only -- they never push multi-GB artifacts into
-    # their own scope / the repo quota (e.g. on a version-bump PR). The
-    # ci-cache-write label lets a PR write into its own scope to test the hit path;
-    # that costs about 1GB of the repo cache quota per run, so remove it when done.
-    # -slim: bump when prune-esp-idf changes what it removes; a key is never overwritten.
+    # their own scope / the repo quota (e.g. on a version-bump PR).
     - name: Cache ESP-IDF install (write on dev)
-      if: (github.ref == 'refs/heads/dev' || contains(github.event.pull_request.labels.*.name, 'ci-cache-write')) && inputs.restore-only != 'true'
+      if: github.ref == 'refs/heads/dev' && inputs.restore-only != 'true'
       uses: actions/cache@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5.0.5
       with:
         path: ~/.esphome-idf
-        key: ${{ runner.os }}-esphome-idf-${{ steps.version.outputs.version }}-py${{ steps.version.outputs.python-version }}-slim
+        key: ${{ runner.os }}-esphome-idf-${{ steps.version.outputs.version }}
     - name: Cache ESP-IDF install (restore-only off dev)
-      if: github.ref != 'refs/heads/dev' && !contains(github.event.pull_request.labels.*.name, 'ci-cache-write') || inputs.restore-only == 'true'
+      if: github.ref != 'refs/heads/dev' || inputs.restore-only == 'true'
       uses: actions/cache/restore@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5.0.5
       with:
         path: ~/.esphome-idf
-        key: ${{ runner.os }}-esphome-idf-${{ steps.version.outputs.version }}-py${{ steps.version.outputs.python-version }}-slim
-    # Install explicitly so the prune below sees the toolchains on a cache miss
-    # too, instead of the install happening inside the first build step.
-    - name: Install ESP-IDF
-      shell: bash
-      run: |
-        . venv/bin/activate
-        python -c 'from esphome.espidf.framework import check_esp_idf_install; check_esp_idf_install("${{ steps.version.outputs.version }}")'
-    - name: Prune ESP-IDF install
-      uses: ./.github/actions/prune-esp-idf
+        key: ${{ runner.os }}-esphome-idf-${{ steps.version.outputs.version }}

.github/actions/prune-esp-idf/action.yml

@@ -1,34 +0,0 @@
-name: Prune ESP-IDF install
-description: >
-  Remove the picolibc sysroots (1.1GB of the 3.9GB install) from the native
-  ESP-IDF toolchains; IDF 5.x links newlib. Skipped when an IDF 6 install is
-  present, which links picolibc (see esp32/__init__.py).
-runs:
-  using: composite
-  steps:
-    - name: Prune picolibc
-      shell: bash
-      run: |
-        shopt -s nullglob
-        prefix="${ESPHOME_ESP_IDF_PREFIX:-$HOME/.esphome-idf}"
-        prefix="${prefix/#\~/$HOME}"
-        for fw in "$prefix"/frameworks/*/; do
-          case "$(basename "$fw")" in
-            [6-9].*) echo "IDF $(basename "$fw") installed, keeping picolibc"; exit 0 ;;
-          esac
-        done
-        n=0
-        for dir in "$prefix"/tools/*-esp-elf/*/*-esp-elf/picolibc; do
-          echo "Removing $dir ($(du -sh "$dir" | cut -f1))"
-          rm -rf "$dir"
-          n=$((n + 1))
-        done
-        # The marker rides along in the cache entry so a restored slim tree stays quiet.
-        if [ "$n" -gt 0 ]; then
-          touch "$prefix/.picolibc-pruned"
-        elif [ -d "$prefix/tools" ] && [ ! -f "$prefix/.picolibc-pruned" ]; then
-          echo "::warning::no picolibc sysroots matched under $prefix/tools"
-        fi
-        if [ -d "$prefix" ]; then
-          du -sh "$prefix"
-        fi

.github/actions/restore-python/action.yml

@@ -32,7 +32,7 @@ runs:
       # detects the activated venv via ``VIRTUAL_ENV`` so the venv layout
       # downstream jobs rely on is preserved.
       if: steps.cache-venv.outputs.cache-hit != 'true'
-      uses: astral-sh/setup-uv@bec219d24cd3e171d82865faccec33120bb574f4 # v10.1.0
+      uses: astral-sh/setup-uv@20cfd1bf945f4377ade1205e4dbc17946fc9a30d # v10.0.1
       with:
         enable-cache: true
         # Pull request saves land in per-PR scopes nothing else can

.github/skills

@@ -1 +0,0 @@
-../.agents/skills

.github/workflows/ci-api-proto.yml

@@ -29,7 +29,7 @@ jobs:
       - name: Set up uv
         # ``--system`` (below) installs into the setup-python interpreter;
         # no venv is created or restored by this workflow.
-        uses: astral-sh/setup-uv@bec219d24cd3e171d82865faccec33120bb574f4 # v10.1.0
+        uses: astral-sh/setup-uv@20cfd1bf945f4377ade1205e4dbc17946fc9a30d # v10.0.1
         with:
           enable-cache: true
           # Pull-request-only workflow: a save could never be shared and

.github/workflows/ci-docker.yml

@@ -67,7 +67,7 @@ jobs:
         with:
           python-version: "3.12"
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@594f3bf4285d9ea8dc53c9a0c9c4092420091003 # v4.4.0
+        uses: docker/setup-buildx-action@37fe631027851001ddb9b187196cc803df7f5f0e # v4.3.0
 
       - name: Determine tag and whether to push
         id: tag
@@ -119,22 +119,16 @@ jobs:
       # pushed image) keeps it working for fork PRs, which never push to ghcr.io.
       - name: Export image for compile-test
         if: matrix.os == 'ubuntu-24.04' && matrix.build_type == 'docker'
-        # zstd over gzip: docker save is on the critical path for every
-        # compile-test job, and zstd -T0 is multithreaded (export 50s -> 9s).
-        # docker load auto-detects the format; its time is layer extraction,
-        # not decompression, so it is unchanged. shell: bash adds pipefail so
-        # a failed docker save cannot upload a truncated artifact.
-        shell: bash
-        run: docker save "ghcr.io/esphome/esphome-amd64:${{ steps.tag.outputs.tag }}" | zstd -T0 -3 > compile-test-image.tar.zst
+        run: docker save "ghcr.io/esphome/esphome-amd64:${{ steps.tag.outputs.tag }}" | gzip > compile-test-image.tar.gz
 
       - name: Upload compile-test image artifact
         if: matrix.os == 'ubuntu-24.04' && matrix.build_type == 'docker'
         uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
         with:
-          # The tar is already compressed, so upload it as-is. archive: false
-          # skips the redundant zip and makes the file name the artifact name
-          # (the `name` input is ignored in that mode).
-          path: compile-test-image.tar.zst
+          # The tar is already gzipped, so upload it as-is. archive: false skips
+          # the redundant zip and makes the file name the artifact name (the
+          # `name` input is ignored in that mode).
+          path: compile-test-image.tar.gz
           retention-days: 1
           archive: false
 
@@ -159,7 +153,7 @@ jobs:
         with:
           python-version: "3.12"
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@594f3bf4285d9ea8dc53c9a0c9c4092420091003 # v4.4.0
+        uses: docker/setup-buildx-action@37fe631027851001ddb9b187196cc803df7f5f0e # v4.3.0
 
       - name: Log in to the GitHub container registry
         uses: docker/login-action@dbcb813823bdd20940b903addbd779551569679f # v4.6.0
@@ -188,6 +182,8 @@ jobs:
       contents: read  # actions/checkout to load the test configs
     strategy:
       fail-fast: false
+      # Modest cap so this smoke test leaves room on the shared runner pool.
+      max-parallel: 8
       matrix:
         # One entry per distinct toolchain. ESP32 variants (c3/c6/s2/s3/p4)
         # share a toolchain bundle, so esp32 is exercised on the base variant
@@ -212,9 +208,9 @@ jobs:
       - name: Download image artifact
         uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
         with:
-          name: compile-test-image.tar.zst
+          name: compile-test-image.tar.gz
       - name: Load image
-        run: docker load --input compile-test-image.tar.zst
+        run: docker load --input compile-test-image.tar.gz
       - name: Compile ${{ matrix.id }}
         run: |
           docker run --rm \

.github/workflows/ci.yml

@@ -49,7 +49,7 @@ jobs:
         # detects the activated venv via ``VIRTUAL_ENV`` so downstream jobs
         # that ``. venv/bin/activate`` see an identical layout.
         if: steps.cache-venv.outputs.cache-hit != 'true'
-        uses: astral-sh/setup-uv@bec219d24cd3e171d82865faccec33120bb574f4 # v10.1.0
+        uses: astral-sh/setup-uv@20cfd1bf945f4377ade1205e4dbc17946fc9a30d # v10.0.1
         with:
           enable-cache: true
           # Pull request saves land in per-PR scopes nothing else can
@@ -92,7 +92,6 @@ jobs:
     outputs:
       core-ci: ${{ steps.determine.outputs.core-ci }}
       integration-tests: ${{ steps.determine.outputs.integration-tests }}
-      integration-run-all: ${{ steps.determine.outputs.integration-run-all }}
       integration-test-buckets: ${{ steps.determine.outputs.integration-test-buckets }}
       clang-tidy: ${{ steps.determine.outputs.clang-tidy }}
       clang-tidy-mode: ${{ steps.determine.outputs.clang-tidy-mode }}
@@ -113,12 +112,6 @@ jobs:
       component-test-batches: ${{ steps.determine.outputs.component-test-batches }}
       validate-only-components: ${{ steps.determine.outputs.validate-only-components }}
       benchmarks: ${{ steps.determine.outputs.benchmarks }}
-      # "true" when this run is a pull request into one of the release
-      # branches. Those pull requests are batches of changes already tested on
-      # their original dev pull requests, so several jobs below trade coverage
-      # for turnaround time on them. Matched exactly, not by prefix, so an
-      # ordinary branch named e.g. "release-notes" is not caught by it.
-      release-pr: ${{ github.base_ref == 'beta' || github.base_ref == 'release' }}
     steps:
       - name: Check out code from GitHub
         uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
@@ -153,9 +146,6 @@ jobs:
           # Extract individual fields
           echo "core-ci=$(echo "$output" | jq -r '.core_ci')" >> $GITHUB_OUTPUT
           echo "integration-tests=$(echo "$output" | jq -r '.integration_tests')" >> $GITHUB_OUTPUT
-          # A missing key must fail here, not silently disable the junit upload
-          run_all=$(echo "$output" | jq -r 'if has("integration_run_all") then .integration_run_all else error("integration_run_all missing") end')
-          echo "integration-run-all=${run_all}" >> $GITHUB_OUTPUT
           echo "integration-test-buckets=$(echo "$output" | jq -c '.integration_test_buckets')" >> $GITHUB_OUTPUT
           echo "clang-tidy=$(echo "$output" | jq -r '.clang_tidy')" >> $GITHUB_OUTPUT
           echo "clang-tidy-mode=$(echo "$output" | jq -r '.clang_tidy_mode')" >> $GITHUB_OUTPUT
@@ -240,24 +230,15 @@ jobs:
     runs-on: ubuntu-latest
     needs:
       - determine-jobs
-    if: github.event_name == 'pull_request' && needs.determine-jobs.outputs.release-pr == 'false' && needs.determine-jobs.outputs.core-ci == 'true'
+    if: github.event_name == 'pull_request' && !startsWith(github.base_ref, 'beta') && !startsWith(github.base_ref, 'release') && needs.determine-jobs.outputs.core-ci == 'true'
     steps:
       - name: Check out code from GitHub
         uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
-      - name: Read prek version from requirements_test.txt
-        id: prek
-        # requirements_test.txt is the only place the version is pinned, so a
-        # Dependabot bump there is picked up here without a second edit.
-        run: |
-          if ! version=$(sed -nE 's/^prek==([^[:space:]#]+).*/\1/p' requirements_test.txt) || [ -z "$version" ]; then
-            echo "::error::No prek== pin found in requirements_test.txt."
-            exit 1
-          fi
-          echo "version=$version" >> "$GITHUB_OUTPUT"
       - name: Run prek
         uses: j178/prek-action@4e14d07f9231acabce116ccfca13b13dd9755ece # v3.0.0
         with:
-          prek-version: ${{ steps.prek.outputs.version }}
+          # Keep in sync with requirements_test.txt.
+          prek-version: "0.4.11"
           # This job only runs on pull requests, so nothing ever populates
           # the cache on dev. Every run would miss and then write a per-pull
           # request copy, which is what the old seed-cache job existed to
@@ -321,7 +302,7 @@ jobs:
           . venv/bin/activate
           pytest -vv --cov-report=xml --tb=native --durations=30 -n auto tests --ignore=tests/integration/
       - name: Upload coverage to Codecov
-        uses: codecov/codecov-action@303a32d7a59b442fa8d48b6a1cc6825c09c847a5 # v7.1.1
+        uses: codecov/codecov-action@fb8b3582c8e4def4969c97caa2f19720cb33a72f # v7.0.0
       - name: Save Python virtual environment cache
         if: github.ref == 'refs/heads/dev'
         uses: actions/cache/save@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
@@ -350,7 +331,7 @@ jobs:
       - name: Check out code from GitHub
         uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
       - name: Report empty upload to Codecov
-        uses: codecov/codecov-action@303a32d7a59b442fa8d48b6a1cc6825c09c847a5 # v7.1.1
+        uses: codecov/codecov-action@fb8b3582c8e4def4969c97caa2f19720cb33a72f # v7.0.0
         with:
           run_command: empty-upload
           force: true
@@ -368,24 +349,14 @@ jobs:
       fail-fast: false
       matrix:
         bucket: ${{ fromJson(needs.determine-jobs.outputs.integration-test-buckets) }}
-    env:
-      # What the cache steps persist; libdeps is excluded (keyed per xdist
-      # worker and env, it never crosses runs).
-      INTEGRATION_PIO_CACHE_PATH: |
-        ~/.esphome-integration-tests/platformio/platforms
-        ~/.esphome-integration-tests/platformio/packages
-        ~/.esphome-integration-tests/platformio/appstate.json
-        ~/.esphome-integration-tests/platformio/.cache
-        ~/.esphome-integration-tests/platformio/.esphome.pio.stamp.json
     steps:
       - name: Check out code from GitHub
         uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
       - name: Install apt packages (cached)
         # ccache speeds up the host compiles. A cache hit never touches apt
         # (mirror outages cannot hang the job); the timeout bounds the cold
-        # path. Packages and version must match seed-apt-cache exactly.
-        # libsdl2-dev is needed by the headless display tests, which capture
-        # screenshots.
+        # path. Packages and version must match seed-apt-cache exactly;
+        # libsdl2-dev is unused here and carried only for cache-key parity.
         timeout-minutes: 10
         uses: awalsh128/cache-apt-pkgs-action@553a35bb8ebd9fcabcb1c9451aa4c98e1b4ca8a9 # v1.6.3
         with:
@@ -396,14 +367,6 @@ jobs:
         uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
         with:
           python-version: "3.13"
-      - name: Restore integration PlatformIO cache
-        # Native platform + toolchain installed by shared_platformio_cache in
-        # tests/integration/conftest.py; a miss self-heals, so no restore-keys.
-        id: pio-cache
-        uses: actions/cache/restore@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
-        with:
-          path: ${{ env.INTEGRATION_PIO_CACHE_PATH }}
-          key: integration-pio-v1-${{ runner.os }}-py${{ steps.python.outputs.python-version }}-${{ hashFiles('requirements.txt', 'tests/integration/fixtures/cache_init.yaml', 'esphome/components/host/__init__.py') }}
       - name: Restore Python virtual environment
         id: cache-venv
         uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
@@ -413,7 +376,7 @@ jobs:
       - name: Set up uv
         # Only needed on cache miss to populate the venv.
         if: steps.cache-venv.outputs.cache-hit != 'true'
-        uses: astral-sh/setup-uv@bec219d24cd3e171d82865faccec33120bb574f4 # v10.1.0
+        uses: astral-sh/setup-uv@20cfd1bf945f4377ade1205e4dbc17946fc9a30d # v10.0.1
         with:
           enable-cache: true
           # Pull request saves land in per-PR scopes nothing else can
@@ -441,46 +404,12 @@ jobs:
         run: |
           . venv/bin/activate
           mapfile -t test_files < <(echo "$BUCKET_TESTS" | jq -r '.[]')
-          if [ "${#test_files[@]}" -eq 0 ]; then
-            echo "::error::Empty integration test bucket; pytest would collect the whole tree"
-            exit 1
-          fi
           echo "Bucket ${{ matrix.bucket.name }}: running ${#test_files[@]} integration tests"
-          pytest -vv --no-cov --tb=native --durations=30 -n auto --dist worksteal \
-            --junitxml=junit-integration.xml "${test_files[@]}"
-      - name: Upload test artifacts
-        # Tests that compare rendered output write the image they actually got here, so a
-        # failure can be looked at without reproducing the whole build locally.
-        if: failure()
-        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
-        with:
-          name: integration-test-artifacts-${{ matrix.bucket.name }}
-          path: test_artifacts/
-          if-no-files-found: ignore
-          retention-days: 7
-      - name: Upload junit timings
-        # Consumed by sync-integration-durations.yml through
-        # script/update_integration_test_durations.py; only full matrix dev
-        # runs produce usable data.
-        if: github.ref == 'refs/heads/dev' && needs.determine-jobs.outputs.integration-run-all == 'true'
-        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
-        with:
-          name: junit-integration-${{ strategy.job-index }}
-          path: junit-integration.xml
-          if-no-files-found: error
-          # A full cron period of margin for the weekly refresh
-          retention-days: 14
+          pytest -vv --no-cov --tb=native --durations=30 -n auto "${test_files[@]}"
       - name: Print ccache statistics
         # esphome stores the PlatformIO ccache under the machine-global cache
         # dir (see _ccache_env() in esphome/platformio/toolchain.py).
         run: CCACHE_DIR="$HOME/.cache/esphome/platformio-ccache" ccache -s
-      - name: Save integration PlatformIO cache
-        # Bucket 0 only; the others would race the same immutable key.
-        if: success() && (github.ref == 'refs/heads/dev' || contains(github.event.pull_request.labels.*.name, 'ci-cache-write')) && strategy.job-index == 0 && steps.pio-cache.outputs.cache-hit != 'true'
-        uses: actions/cache/save@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
-        with:
-          path: ${{ env.INTEGRATION_PIO_CACHE_PATH }}
-          key: ${{ steps.pio-cache.outputs.cache-primary-key }}
 
   import-time:
     name: Check import esphome.__main__ time
@@ -520,21 +449,10 @@ jobs:
     if: >-
       github.repository == 'esphome/esphome' && (
         (github.event_name == 'push' && github.ref_name == 'dev') ||
-        (
-          github.event_name == 'pull_request' &&
-          needs.determine-jobs.outputs.release-pr == 'false' &&
-          needs.determine-jobs.outputs.benchmarks == 'true'
-        )
+        (github.event_name == 'pull_request' && needs.determine-jobs.outputs.benchmarks == 'true')
       )
     # CodSpeed benchmarks require a CodSpeed account linked to the repository to run
     # (https://codspeed.io) -- disabled on forks that aren't esphome/esphome itself.
-    #
-    # Pull requests into beta and release are skipped as well. CodSpeed compares a
-    # pull request against the newest commit of its base branch that has a benchmark
-    # run of its own, and only dev is benchmarked. A release pull request therefore
-    # falls back to dev's latest run, so every speed-up merged into dev since the
-    # release branched is reported as a regression in the release. The changes there
-    # have already been benchmarked on their original dev pull requests.
     steps:
       - name: Check out code from GitHub
         uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
@@ -601,7 +519,7 @@ jobs:
             apt-get install -y libc6-dbg
 
       - name: Run CodSpeed benchmarks
-        uses: CodSpeedHQ/action@373d6868929f444bc08d901fd0eb0ad52a8875ea # v5.2.1
+        uses: CodSpeedHQ/action@4296e51e7041e24dadb86d1d6e8b9320d223dbe8 # v5.0.3
         with:
           run: |
             . venv/bin/activate
@@ -714,12 +632,6 @@ jobs:
         with:
           framework: arduino
 
-      - name: Cache clang-tidy idedata
-        if: matrix.cache_idf
-        uses: ./.github/actions/cache-clang-tidy-idedata
-        with:
-          environment: esp32-arduino-tidy
-
       - name: Cache nRF Connect SDK install
         if: matrix.cache_sdk_nrf
         uses: ./.github/actions/cache-sdk-nrf
@@ -769,10 +681,6 @@ jobs:
           # Also cache libdeps, store them in a ~/.platformio subfolder
           PLATFORMIO_LIBDEPS_DIR: ~/.platformio/libdeps
 
-      - name: Prune ESP-IDF install before cache save
-        if: matrix.cache_idf && (github.ref == 'refs/heads/dev' || contains(github.event.pull_request.labels.*.name, 'ci-cache-write'))
-        uses: ./.github/actions/prune-esp-idf
-
       - name: Suggested changes
         run: script/ci-suggest-changes ${{ matrix.ignore_errors && '|| true' || '' }}
         # yamllint disable-line rule:line-length
@@ -805,11 +713,6 @@ jobs:
       - name: Cache ESP-IDF install
         uses: ./.github/actions/cache-esp-idf
 
-      - name: Cache clang-tidy idedata
-        uses: ./.github/actions/cache-clang-tidy-idedata
-        with:
-          environment: esp32-idf-tidy
-
       - name: Register problem matchers
         run: |
           echo "::add-matcher::.github/workflows/matchers/gcc.json"
@@ -844,10 +747,6 @@ jobs:
           # Also cache libdeps, store them in a ~/.platformio subfolder
           PLATFORMIO_LIBDEPS_DIR: ~/.platformio/libdeps
 
-      - name: Prune ESP-IDF install before cache save
-        if: (github.ref == 'refs/heads/dev' || contains(github.event.pull_request.labels.*.name, 'ci-cache-write'))
-        uses: ./.github/actions/prune-esp-idf
-
       - name: Suggested changes
         run: script/ci-suggest-changes
         if: always()
@@ -893,11 +792,6 @@ jobs:
       - name: Cache ESP-IDF install
         uses: ./.github/actions/cache-esp-idf
 
-      - name: Cache clang-tidy idedata
-        uses: ./.github/actions/cache-clang-tidy-idedata
-        with:
-          environment: esp32-idf-tidy
-
       - name: Register problem matchers
         run: |
           echo "::add-matcher::.github/workflows/matchers/gcc.json"
@@ -932,10 +826,6 @@ jobs:
           # Also cache libdeps, store them in a ~/.platformio subfolder
           PLATFORMIO_LIBDEPS_DIR: ~/.platformio/libdeps
 
-      - name: Prune ESP-IDF install before cache save
-        if: (github.ref == 'refs/heads/dev' || contains(github.event.pull_request.labels.*.name, 'ci-cache-write'))
-        uses: ./.github/actions/prune-esp-idf
-
       - name: Suggested changes
         run: script/ci-suggest-changes
         if: always()
@@ -959,19 +849,16 @@ jobs:
             name: Run script/clang-tidy for ESP32 S3
             # yamllint disable-line rule:line-length
             options: --environment esp32s3-idf-tidy --grep SOC_TEMP_SENSOR_SUPPORTED --grep USE_ESP32_VARIANT_ESP32S3 --grep USE_LOGGER_USB_CDC
-            tidy_environment: esp32s3-idf-tidy
           - id: clang-tidy
             name: Run script/clang-tidy for ESP32 P4
             # P4 has no native Wi-Fi/BLE; those run over the hosted co-processor,
             # so their code paths differ -- lint them under the P4 build too.
             # yamllint disable-line rule:line-length
             options: --environment esp32p4-idf-tidy --grep USE_ESP32_VARIANT_ESP32P4 --grep USE_ESP32_HOSTED --grep USE_WIFI --grep USE_BLE
-            tidy_environment: esp32p4-idf-tidy
           - id: clang-tidy
             name: Run script/clang-tidy for ESP32 C6
             # yamllint disable-line rule:line-length
             options: --environment esp32c6-idf-tidy --grep SOC_LP_I2C_SUPPORTED --grep USE_ESP32_VARIANT_ESP32C6 --grep USE_OPENTHREAD --grep USE_ZIGBEE
-            tidy_environment: esp32c6-idf-tidy
 
     steps:
       - name: Check out code from GitHub
@@ -989,11 +876,6 @@ jobs:
       - name: Cache ESP-IDF install
         uses: ./.github/actions/cache-esp-idf
 
-      - name: Cache clang-tidy idedata
-        uses: ./.github/actions/cache-clang-tidy-idedata
-        with:
-          environment: ${{ matrix.tidy_environment }}
-
       - name: Register problem matchers
         run: |
           echo "::add-matcher::.github/workflows/matchers/gcc.json"
@@ -1027,10 +909,6 @@ jobs:
             script/clang-tidy --fix --changed ${{ matrix.options }}
           fi
 
-      - name: Prune ESP-IDF install before cache save
-        if: (github.ref == 'refs/heads/dev' || contains(github.event.pull_request.labels.*.name, 'ci-cache-write'))
-        uses: ./.github/actions/prune-esp-idf
-
       - name: Suggested changes
         run: script/ci-suggest-changes
         if: always()
@@ -1051,6 +929,7 @@ jobs:
       ESPHOME_SDK_NRF_PREFIX: ~/.esphome-sdk-nrf
     strategy:
       fail-fast: false
+      max-parallel: ${{ (startsWith(github.base_ref, 'beta') || startsWith(github.base_ref, 'release')) && 32 || 16 }}
       matrix:
         batch: ${{ fromJson(needs.determine-jobs.outputs.component-test-batches) }}
     steps:
@@ -1137,7 +1016,7 @@ jobs:
           # - This catches pin conflicts and other issues in directly changed code
           # - Grouped tests use --testing-mode to allow config merging (disables some checks)
           # - Dependencies are safe to group since they weren't modified in this PR
-          if [[ "${{ needs.determine-jobs.outputs.release-pr }}" == "true" ]]; then
+          if [[ "${{ github.base_ref }}" == beta* ]] || [[ "${{ github.base_ref }}" == release* ]]; then
             directly_changed_csv=""
             echo "Testing components: $components_csv"
             echo "Target branch: ${{ github.base_ref }} - grouping all components"
@@ -1274,7 +1153,7 @@ jobs:
         # install step (order-of-magnitude faster on cold boots,
         # with its own wheel cache). actions/setup-python still
         # provides the interpreter.
-        uses: astral-sh/setup-uv@bec219d24cd3e171d82865faccec33120bb574f4 # v10.1.0
+        uses: astral-sh/setup-uv@20cfd1bf945f4377ade1205e4dbc17946fc9a30d # v10.0.1
         with:
           enable-cache: true
           # Pull request saves land in per-PR scopes nothing else can

.github/workflows/codeql.yml

@@ -56,7 +56,7 @@ jobs:
 
       # Initializes the CodeQL tools for scanning.
       - name: Initialize CodeQL
-        uses: github/codeql-action/init@1c5b675653bb5c22dbe9b12b556ec555138e09fd # v4.38.1
+        uses: github/codeql-action/init@ff2f1c621b7f889edc0d3c761ac2e6a3f8cdb0dd # v4.37.7
         with:
           languages: ${{ matrix.language }}
           build-mode: ${{ matrix.build-mode }}
@@ -84,6 +84,6 @@ jobs:
           exit 1
 
       - name: Perform CodeQL Analysis
-        uses: github/codeql-action/analyze@1c5b675653bb5c22dbe9b12b556ec555138e09fd # v4.38.1
+        uses: github/codeql-action/analyze@ff2f1c621b7f889edc0d3c761ac2e6a3f8cdb0dd # v4.37.7
         with:
           category: "/language:${{matrix.language}}"

.github/workflows/lock.yml

@@ -14,4 +14,4 @@ jobs:
     permissions:
       issues: write         # issues.lock on closed issues
       pull-requests: write  # issues.lock on closed pull requests
-    uses: esphome/workflows/.github/workflows/lock.yml@cc3e76de337dc59bc1cba8da58d963cd23b873f1  # 2026.9.0
+    uses: esphome/workflows/.github/workflows/lock.yml@0fdd5e311b7e744069166696072a1a9cbc5fbeb6  # 2026.8.1

.github/workflows/release.yml

@@ -123,7 +123,7 @@ jobs:
           python-version: "3.12"
 
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@594f3bf4285d9ea8dc53c9a0c9c4092420091003 # v4.4.0
+        uses: docker/setup-buildx-action@37fe631027851001ddb9b187196cc803df7f5f0e # v4.3.0
 
       - name: Log in to docker hub
         uses: docker/login-action@dbcb813823bdd20940b903addbd779551569679f # v4.6.0
@@ -202,7 +202,7 @@ jobs:
           merge-multiple: true
 
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@594f3bf4285d9ea8dc53c9a0c9c4092420091003 # v4.4.0
+        uses: docker/setup-buildx-action@37fe631027851001ddb9b187196cc803df7f5f0e # v4.3.0
 
       - name: Log in to docker hub
         if: matrix.registry == 'dockerhub'

.github/workflows/stale.yml

@@ -16,7 +16,7 @@ jobs:
     # No GITHUB_TOKEN permissions: the reusable workflow mints an ESPHome
     # GitHub App token so the labels, comments and closures come from
     # esphome[bot] instead of github-actions[bot].
-    uses: esphome/workflows/.github/workflows/stale.yml@cc3e76de337dc59bc1cba8da58d963cd23b873f1  # main
+    uses: esphome/workflows/.github/workflows/stale.yml@a1c1485ab46ef41a84a6a9d8abd7fa4b7628fd70  # main
     secrets:
       ESPHOME_GITHUB_APP_PRIVATE_KEY: ${{ secrets.ESPHOME_GITHUB_APP_PRIVATE_KEY }}
     with:
@@ -33,7 +33,7 @@ jobs:
         and will be closed if no further activity occurs within 7 days.
 
         If you are the author of this PR, please leave a comment if you want
-        to keep it open. Also, please merge the latest dev branch into your
+        to keep it open. Also, please rebase your PR onto the latest dev
         branch to ensure that it's up to date with the latest changes.
 
         Thank you for your contribution!

.github/workflows/sync-dependency-versions.yml

@@ -1,94 +0,0 @@
-# Keeps pre-commit hook revs in sync with the requirements files.
-#
-# Dependabot only bumps the pins in requirements*.txt. Some of those tools
-# are pinned again as hook revs in .pre-commit-config.yaml. This workflow
-# runs script/sync_dependency_versions.py against the pull request branch
-# and pushes a commit with the revs updated.
-
-name: Sync dependency versions
-
-on:
-  # pull_request_target rather than pull_request so the App secret is
-  # available on Dependabot pull requests (pull_request runs opened by
-  # Dependabot only see Dependabot secrets). The job below only touches
-  # branches in this repository and only ever executes the script from the
-  # base branch checkout, so fork code never runs with the token.
-  pull_request_target:
-    types: [opened, synchronize, reopened]
-    paths:
-      - requirements_dev.txt
-      - requirements_test.txt
-      - .pre-commit-config.yaml
-      - script/sync_dependency_versions.py
-
-# The push to the pull request branch uses the App token minted below, so
-# the workflow's GITHUB_TOKEN does not need any scopes.
-permissions: {}
-
-concurrency:
-  group: ${{ github.workflow }}-${{ github.event.pull_request.number }}
-  cancel-in-progress: true
-
-jobs:
-  sync:
-    name: Sync pinned versions
-    runs-on: ubuntu-latest
-    # Same-repository branches only: a push to a fork is not possible with
-    # this token, and it keeps untrusted heads out of a privileged job.
-    if: >-
-      github.repository == 'esphome/esphome'
-      && github.event.pull_request.head.repo.full_name == github.repository
-    steps:
-      - name: Generate a token
-        id: generate-token
-        uses: actions/create-github-app-token@bcd2ba49218906704ab6c1aa796996da409d3eb1 # v3.2.0
-        with:
-          client-id: ${{ vars.ESPHOME_GITHUB_APP_CLIENT_ID }}
-          private-key: ${{ secrets.ESPHOME_GITHUB_APP_PRIVATE_KEY }}
-          # A push made with the workflow's own GITHUB_TOKEN would not start
-          # CI on the new commit; a push with the App token does.
-          permission-contents: write  # git push of the sync commit to the pull request branch
-
-      - name: Check out base branch
-        # Provides the script that runs below. Deliberately the base branch
-        # so the pull request cannot change what executes here.
-        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
-        with:
-          ref: ${{ github.event.pull_request.base.sha }}
-          persist-credentials: false
-
-      - name: Check out pull request branch
-        # No allow-unsafe-pr-checkout here on purpose: checkout v7 only
-        # refuses heads that live in a different repository, and the job
-        # condition above already limits runs to same-repository branches.
-        # Leaving it off keeps that refusal as a backstop for fork heads.
-        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
-        with:
-          ref: ${{ github.event.pull_request.head.ref }}
-          path: pull-request
-          token: ${{ steps.generate-token.outputs.token }}
-
-      - name: Set up Python
-        uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
-        with:
-          python-version: "3.12"
-
-      - name: Install yamlrocks
-        # The script edits YAML through yamlrocks. Take the pin from the
-        # base branch requirements so this workflow has no copy of its own.
-        run: pip install "$(grep -E '^yamlrocks==' requirements_test.txt | cut -d'#' -f1)"
-
-      - name: Sync pinned versions
-        run: python script/sync_dependency_versions.py --root pull-request
-
-      - name: Push changes
-        working-directory: pull-request
-        run: |
-          if git diff --quiet; then
-            echo "All pinned versions already match the requirements files."
-            exit 0
-          fi
-          git config user.name "esphome[bot]"
-          git config user.email "115708604+esphome[bot]@users.noreply.github.com"
-          git commit -am "Sync pinned tool versions with requirements files"
-          git push

.github/workflows/sync-device-classes.yml

@@ -47,7 +47,7 @@ jobs:
         # setup-python interpreter so subsequent ``prek`` /
         # ``script/run-in-env.py`` steps find the deps without a
         # ``uv run`` prefix.
-        uses: astral-sh/setup-uv@bec219d24cd3e171d82865faccec33120bb574f4 # v10.1.0
+        uses: astral-sh/setup-uv@20cfd1bf945f4377ade1205e4dbc17946fc9a30d # v10.0.1
         with:
           enable-cache: true
           # Pin uv version so the action does not have to fetch the

.github/workflows/sync-integration-durations.yml

@@ -1,98 +0,0 @@
----
-name: Refresh integration test durations
-
-on:
-  workflow_dispatch:
-  schedule:
-    - cron: "45 5 * * 1"
-
-# Repo writes (branch push, PR open) happen via the App token minted below,
-# so the workflow's GITHUB_TOKEN does not need any write scopes.
-permissions:
-  contents: read
-  actions: read  # gh api / gh run download for the CI junit artifacts
-
-jobs:
-  sync:
-    name: Refresh integration test durations
-    runs-on: ubuntu-latest
-    if: github.repository == 'esphome/esphome'
-    steps:
-      - name: Generate a token
-        id: generate-token
-        uses: actions/create-github-app-token@bcd2ba49218906704ab6c1aa796996da409d3eb1 # v3.2.0
-        with:
-          client-id: ${{ vars.ESPHOME_GITHUB_APP_CLIENT_ID }}
-          private-key: ${{ secrets.ESPHOME_GITHUB_APP_PRIVATE_KEY }}
-          permission-contents: write       # push the sync branch
-          permission-pull-requests: write  # open or refresh the sync PR
-
-      - name: Checkout
-        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
-
-      - name: Setup Python
-        uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
-        with:
-          python-version: "3.13"
-
-      - name: Refresh from the newest usable dev run
-        env:
-          GH_TOKEN: ${{ github.token }}
-        run: |
-          # Only full matrix dev runs upload junit-integration-* artifacts
-          # (see the integration-tests job); the merge script re-checks
-          # coverage regardless.
-          # Newest-first candidates via their bucket-0 artifact. Fork PRs run
-          # their own ci.yml, so name and branch are spoofable; require
-          # same-repo. Assignment failures trip set -e and fail loudly.
-          candidates=$(
-            gh api "repos/${GITHUB_REPOSITORY}/actions/artifacts?name=junit-integration-0&per_page=100" \
-              --jq '.artifacts[] | select(.expired | not) | .workflow_run
-                    | select(.head_branch == "dev" and .head_repository_id != null
-                             and .head_repository_id == .repository_id)
-                    | .id'
-          )
-          # Green runs first, then the rest newest first; a run missing a
-          # bucket fails the coverage check and the next one is tried
-          green=""
-          rest=""
-          for id in ${candidates}; do
-            conclusion=$(gh api "repos/${GITHUB_REPOSITORY}/actions/runs/${id}" --jq '.conclusion // ""')
-            if [ "${conclusion}" = "success" ]; then
-              green="${green} ${id}"
-            elif [ -n "${conclusion}" ]; then
-              rest="${rest} ${id}"
-            fi
-          done
-          # helpers.py imports colorama; the script needs nothing else
-          pip install colorama
-          for id in ${green} ${rest}; do
-            rm -rf /tmp/junit
-            if ! gh run download "${id}" --repo "${GITHUB_REPOSITORY}" -p "junit-integration-*" -D /tmp/junit; then
-              echo "::warning::Could not download artifacts for run ${id}; trying the next"
-              continue
-            fi
-            status=0
-            python script/update_integration_test_durations.py /tmp/junit || status=$?
-            if [ "${status}" -eq 0 ]; then
-              echo "Refreshed from run ${id}"
-              exit 0
-            fi
-            # Only EXIT_LOW_COVERAGE (3) from the script advances to the next run
-            [ "${status}" -eq 3 ] || exit 1
-            echo "::warning::Run ${id} covers too few test files; trying the next"
-          done
-          echo "::error::No dev CI run with usable junit artifacts in range; the feed is starved"
-          exit 1
-
-      - name: Commit changes
-        uses: peter-evans/create-pull-request@5f6978faf089d4d20b00c7766989d076bb2fc7f1 # v8.1.1
-        with:
-          commit-message: "[ci] Refresh integration test durations"
-          committer: esphome[bot] <115708604+esphome[bot]@users.noreply.github.com>
-          author: esphome[bot] <115708604+esphome[bot]@users.noreply.github.com>
-          branch: sync/integration-durations
-          delete-branch: true
-          title: "[ci] Refresh integration test durations"
-          body-path: .github/PULL_REQUEST_TEMPLATE.md
-          token: ${{ steps.generate-token.outputs.token }}

.gitignore

@@ -137,8 +137,6 @@ config/
 !tests/component_tests/**/config/
 tests/build/
 tests/.esphome/
-# Output kept by failing tests for inspection; uploaded by CI
-test_artifacts/
 /.temp-clang-tidy.cpp
 /.temp/
 .pio/

.pre-commit-config.yaml

@@ -1,6 +1,7 @@
 ---
 # See https://pre-commit.com for more information
 # See https://pre-commit.com/hooks.html for more hooks
+
 ci:
   autoupdate_commit_msg: 'pre-commit: autoupdate'
   autoupdate_schedule: off  # Disabled until ruff versions are synced between deps and pre-commit
@@ -10,7 +11,7 @@ ci:
 repos:
   - repo: https://github.com/astral-sh/ruff-pre-commit
     # Ruff version.
-    rev: v0.16.8
+    rev: v0.16.3
     hooks:
       # Run the linter.
       - id: ruff
@@ -41,7 +42,7 @@ repos:
       - id: pyupgrade
         args: [--py312-plus]
   - repo: https://github.com/adrienverge/yamllint.git
-    rev: v1.38.0
+    rev: v1.37.1
     hooks:
       - id: yamllint
         exclude: ^(\.clang-format|\.clang-tidy)$

AGENTS.md

@@ -44,16 +44,6 @@ This document provides essential context for AI models interacting with this pro
 
 ## 4. Coding Conventions & Style Guide
 
-**Read the developer documentation before writing a component.** https://developers.esphome.io covers the
-component lifecycle, the main loop, and the reasoning behind the rules below in far more depth than this
-file does, and it is the authority when they disagree. The most useful starting points:
-
-*   https://developers.esphome.io/architecture/components/ - component lifecycle, `setup()`, `loop()`,
-    setup priorities, and how a component is registered.
-*   https://developers.esphome.io/architecture/components/advanced/ - choosing between `loop()`,
-    `set_interval`, `set_timeout` and `defer`; waking the loop from another thread; the RAM cost of each.
-*   https://developers.esphome.io/contributing/code/ - contribution rules, public API and breaking changes.
-
 *   **Formatting:**
     *   **Python:** Uses `ruff` and `flake8` for linting and formatting. Configuration is in `pyproject.toml`.
     *   **C++:** Uses `clang-format` for formatting. Configuration is in `.clang-format`.
@@ -152,47 +142,6 @@ file does, and it is the authority when they disagree. The most useful starting
     *   **Indentation:** Use spaces (two per indentation level), not tabs
     *   **Type aliases:** Prefer `using type_t = int;` over `typedef int type_t;`
     *   **Line length:** Wrap lines at no more than 120 characters
-    *   **Timing in `loop()`:** Never call `millis()` in a `loop()` body. The current tick's timestamp is
-        already cached - use `App.get_loop_component_start_time()` (from `esphome/core/application.h`).
-        Only reach for `millis()` when you genuinely need sub-tick resolution inside a long operation.
-    *   **The main loop runs every 16 ms.** A rate-limit gate shorter than that does nothing: the check
-        passes on essentially every pass of the loop, so it costs a comparison and buys nothing. Pick an
-        interval comfortably coarser than 16 ms, or drop the gate entirely and accept running every loop.
-        ```cpp
-        // Bad - a 10ms gate against a 16ms loop never holds anything back
-        static constexpr uint32_t POLL_INTERVAL_MS = 10;
-        const uint32_t now = millis();
-        if (now - this->last_poll_ < POLL_INTERVAL_MS)
-          return;
-        this->last_poll_ = now;
-        ```
-        ```cpp
-        // Good - an interval that actually rate limits, off the cached timestamp
-        static constexpr uint32_t POLL_INTERVAL_MS = 100;
-        const uint32_t now = App.get_loop_component_start_time();
-        if (now - this->last_poll_ < POLL_INTERVAL_MS)
-          return;
-        this->last_poll_ = now;
-        ```
-        Pick the primitive by cadence: under 250 ms use a gated `loop()`; 500 ms and above use
-        `set_interval`. Full reasoning, including why `set_interval` costs more below 500 ms:
-        https://developers.esphome.io/architecture/components/advanced/#quick-rule-of-thumb
-    *   **Don't override a default with the same value:** if a base class method already returns what you
-        want, do not override it. `Component::get_setup_priority()` returns `setup_priority::DATA`, so a
-        component that wants `DATA` should simply leave it alone.
-        ```cpp
-        // Bad - this is exactly what the base class already does
-        float get_setup_priority() const override { return setup_priority::DATA; }
-        ```
-    *   **Logging string literals:** wrap literals passed as `%s` arguments in `LOG_STR_LITERAL()` so they
-        can be stored in flash rather than RAM.
-        ```cpp
-        // Bad
-        ESP_LOGV(TAG, "Key %u %s", key, pressed ? "pressed" : "released");
-
-        // Good
-        ESP_LOGV(TAG, "Key %u %s", key, pressed ? LOG_STR_LITERAL("pressed") : LOG_STR_LITERAL("released"));
-        ```
     *   **Constructor parameters vs setters:** Component properties that are both **required** and **invariant**
         (never change after construction) should be constructor parameters rather than set via setter methods.
         This makes the dependency explicit and prevents use of the object in an incompletely-initialized state.
@@ -431,17 +380,7 @@ file does, and it is the authority when they disagree. The most useful starting
           MyComponent *parent_;
         };
         ```
-        Register it without writing a builder:
-        ```python
-        automation.register_simple_action(
-            "my_component.do_something", MyAction, schema, synchronous=True
-        )
-        ```
-        The constructor receives the object named by `config[CONF_ID]`. Use `register_bare_action` for a
-        no-argument constructor, `register_parented_action` for a class deriving from `Parented<T>`, and
-        the `@automation.register_action(...)` decorator only when the builder must also set fields.
-
-        Use `synchronous=True` for actions that run to completion inside `play()` without deferring. Use `synchronous=False` if the action may suspend/defer execution (e.g. `delay`, `wait_until`, `script.wait`) or store trigger arguments for later use.
+        Register with `@automation.register_action("my_component.do_something", MyAction, schema, synchronous=True)`. Use `synchronous=True` for actions that run to completion inside `play()` without deferring. Use `synchronous=False` if the action may suspend/defer execution (e.g. `delay`, `wait_until`, `script.wait`) or store trigger arguments for later use.
 
     *   **Conditions:**
         ```cpp
@@ -453,8 +392,7 @@ file does, and it is the authority when they disagree. The most useful starting
           MyComponent *parent_;
         };
         ```
-        Register with `automation.register_simple_condition("my_component.is_active", MyCondition, schema)`;
-        `register_bare_condition`, `register_parented_condition` and the decorator follow the action rules.
+        Register with `@automation.register_condition("my_component.is_active", MyCondition, schema)`.
 
 *   **Type Hints:** Type-hint all function signatures, including test functions and config validators (e.g. `def validate_x(config: ConfigType) -> ConfigType:`, `def test_x() -> None:`). Import `ConfigType` from `esphome.types`.
 
@@ -564,7 +502,6 @@ file does, and it is the authority when they disagree. The most useful starting
     4.  **Lint:** Run `prek` to ensure code is compliant.
     5.  **Commit:** Commit your changes. There is no strict format for commit messages.
     6.  **Pull Request:** Submit a PR against the `dev` branch. The Pull Request title must start with a `[tag]` prefix. For component work, use the component name (e.g., `[display] Fix bug`, `[abc123] Add new component`); for changes to shared/core code that isn't tied to a single component, use `[core]` (e.g., `[core] Add validator`). Update documentation, examples, and add `CODEOWNERS` entries as needed. Pull requests should always be made using the `.github/PULL_REQUEST_TEMPLATE.md` template - fill out all sections completely without removing any parts of the template.
-    7.  **Comments:** When commenting on GitHub PRs or issues, don't tag contributors, especially bots. Avoid referring to list items (e.g. from reviews) with the form #nn - this will be interpreted by GitHub as a reference to issue or PR nn. Keep comments short and exclude irrelevant details, backstories, restatement of previous comments and anything that is already obvious to the reader.
 
 *   **Documentation Contributions:**
     *   Documentation is hosted in the separate `esphome/esphome.io` repository.
@@ -625,36 +562,6 @@ file does, and it is the authority when they disagree. The most useful starting
            Use `cg.add_define("MAX_SERVICES", count)` to set the size from Python configuration.
            Like `std::array` but with vector-like API (`push_back()`, `size()`) and no STL reallocation code.
 
-           **Listener and child-entity registration lists are the most common case, and the most commonly
-           missed.** A `register_*()` method called once per child at code generation time has a count that
-           is known at compile time, so it should never be a `std::vector`. Use `cg.slot_counter()`: it
-           returns a function that each consumer calls once per slot it will occupy, and after every
-           `to_code` has run it emits the define with the final count. When nothing registers, no define is
-           emitted and the storage plus its registration method compile out entirely.
-           ```python
-           # hub component's __init__.py
-           _request_listener_slot = cg.slot_counter("MY_COMPONENT_LISTENER_COUNT")
-
-
-           async def register_listener(hub: MockObj, var: MockObj) -> None:
-               _request_listener_slot()
-               cg.add(hub.register_listener(var))
-           ```
-           When several instances each own a list declared at the same size (one per hub of a
-           `MULTI_CONF` component), pass the owning object as the key, `_request_listener_slot(str(hub))`;
-           the define is then the largest count any one key requested instead of the total.
-           ```cpp
-           #ifdef MY_COMPONENT_LISTENER_COUNT
-             void register_listener(MyComponentListener *listener);
-           #endif
-            protected:
-           #ifdef MY_COMPONENT_LISTENER_COUNT
-             StaticVector<MyComponentListener *, MY_COMPONENT_LISTENER_COUNT> listeners_;
-           #endif
-           ```
-           Request slots from `to_code`, not from a job that runs after `CoroPriority.FINAL` - a late
-           request raises rather than silently undercounting.
-
         3. **Runtime-known sizes:** Use `FixedVector` from `esphome/core/helpers.h` when the size is only known at runtime initialization.
            ```cpp
            // Bad - generates STL realloc code (_M_realloc_insert)
@@ -692,25 +599,9 @@ file does, and it is the authority when they disagree. The most useful starting
            ```
            Linear search on small datasets (1-16 elements) is often faster than hashing/tree overhead, but this depends on lookup frequency and access patterns. For frequent lookups in hot code paths, the O(1) vs O(n) complexity difference may still matter even for small datasets. `std::vector` with simple structs is usually fine—it's the heavy containers (`map`, `set`, `unordered_map`) that should be avoided for small datasets unless profiling shows otherwise.
 
-        5. **Strings set once from configuration:** Use `StringRef` (`esphome/core/string_ref.h`) rather than
-           `std::string`. Code generation passes a string literal that lives in flash for the life of the
-           program, so storing a `std::string` copies it onto the heap for nothing. `StringRef` is a
-           non-owning pointer plus length; it does not copy, and it must only ever refer to storage that
-           outlives it (a string literal, or a buffer owned elsewhere).
-           ```cpp
-           // Bad - heap copy of a literal that is already in flash
-           void set_keys(std::string keys) { this->keys_ = std::move(keys); }
-           std::string keys_;
-           ```
-           ```cpp
-           // Good - no allocation
-           void set_keys(const char *keys) { this->keys_ = StringRef(keys); }
-           StringRef keys_;
-           ```
+        5. **Avoid `std::deque`:** It allocates in 512-byte blocks regardless of element size, guaranteeing at least 512 bytes of RAM usage immediately. This is a major source of crashes on memory-constrained devices.
 
-        6. **Avoid `std::deque`:** It allocates in 512-byte blocks regardless of element size, guaranteeing at least 512 bytes of RAM usage immediately. This is a major source of crashes on memory-constrained devices.
-
-        7. **Detection:** Look for these patterns in compiler output:
+        6. **Detection:** Look for these patterns in compiler output:
            - Large code sections with STL symbols (vector, map, set)
            - `alloc`, `realloc`, `dealloc` in symbol names
            - `_M_realloc_insert`, `_M_default_append` (vector reallocation)
@@ -854,7 +745,7 @@ file does, and it is the authority when they disagree. The most useful starting
         cv.rename_key(
             CONF_OLD_KEY, CONF_NEW_KEY, removed_in="2026.6.0", component="my_component"
         ),
-        cv.Schema({...}),
+        cv.Schema({ ... }),
     )
     ```
     For other deprecations, warn manually during validation:

CODEOWNERS

@@ -100,7 +100,6 @@ esphome/components/bmp581_i2c/* @danielkent-net @kahrendt
 esphome/components/bmp581_spi/* @danielkent-net @kahrendt
 esphome/components/bp1658cj/* @Cossid
 esphome/components/bp5758d/* @Cossid
-esphome/components/bridge/* @kbx81
 esphome/components/bthome_mithermometer/* @nagyrobi
 esphome/components/button/* @esphome/core
 esphome/components/bytebuffer/* @clydebarrow
@@ -112,8 +111,6 @@ esphome/components/captive_portal/* @esphome/core
 esphome/components/cc1101/* @gabest11 @lygris
 esphome/components/ccs811/* @habbie
 esphome/components/cd74hc4067/* @asoehlke
-esphome/components/cdc_acm_uart/* @kbx81
-esphome/components/cdc_acm_uart/bridge/* @kbx81
 esphome/components/ch422g/* @clydebarrow @jesterret
 esphome/components/ch423/* @dwmw2
 esphome/components/chsc6x/* @kkosik20
@@ -134,7 +131,6 @@ esphome/components/cst816/* @clydebarrow
 esphome/components/cst9220/* @clydebarrow
 esphome/components/ct_clamp/* @jesserockz
 esphome/components/current_based/* @djwmarcx
-esphome/components/d01/* @ch604
 esphome/components/dac7678/* @NickB1
 esphome/components/daikin_arc/* @MagicBear
 esphome/components/daikin_brc/* @hagak
@@ -152,7 +148,6 @@ esphome/components/display_menu_base/* @numo68
 esphome/components/dlms_meter/* @latonita @PolarGoose @SimonFischer04 @Tomer27cz
 esphome/components/dps310/* @kbx81
 esphome/components/ds1307/* @badbadc0ffee
-esphome/components/ds1603l/* @JakeLC15
 esphome/components/ds2484/* @mrk-its
 esphome/components/ds248x/* @tomwellnitz
 esphome/components/dsmr/* @glmnet @PolarGoose
@@ -182,6 +177,7 @@ esphome/components/esp32_camera_web_server/* @ayufan
 esphome/components/esp32_can/* @Sympatron
 esphome/components/esp32_hosted/* @swoboda1337
 esphome/components/esp32_hosted/update/* @swoboda1337
+esphome/components/esp32_improv/* @jesserockz
 esphome/components/esp32_rmt/* @jesserockz
 esphome/components/esp32_rmt_led_strip/* @jesserockz
 esphome/components/esp8266/* @esphome/core
@@ -265,10 +261,8 @@ esphome/components/i2s_audio/* @jesserockz
 esphome/components/i2s_audio/microphone/* @jesserockz
 esphome/components/i2s_audio/speaker/* @jesserockz @kahrendt
 esphome/components/iaqcore/* @yozik04
-esphome/components/icnt86/* @danepowell
 esphome/components/ili9xxx/* @clydebarrow @nielsnl68
 esphome/components/improv_base/* @esphome/core
-esphome/components/improv_ble/* @jesserockz
 esphome/components/improv_serial/* @esphome/core
 esphome/components/ina226/* @latonita @Sergio303
 esphome/components/ina260/* @mreditor97
@@ -356,7 +350,6 @@ esphome/components/mipi_spi/* @clydebarrow
 esphome/components/mitsubishi/* @RubyBailey
 esphome/components/mitsubishi_cn105/* @crnjan
 esphome/components/mixer/speaker/* @kahrendt
-esphome/components/mk2pvrouter/* @FredM67
 esphome/components/mlx90393/* @functionpointer
 esphome/components/mlx90614/* @jesserockz
 esphome/components/mmc5603/* @benhoff
@@ -478,13 +471,11 @@ esphome/components/sendspin/image/* @kahrendt
 esphome/components/sendspin/media_player/* @kahrendt
 esphome/components/sendspin/media_source/* @kahrendt
 esphome/components/sendspin/sensor/* @kahrendt
-esphome/components/sendspin/switch/* @kahrendt
 esphome/components/sendspin/text_sensor/* @kahrendt
 esphome/components/sensirion_common/* @martgras
 esphome/components/sensor/* @esphome/core
 esphome/components/serial_proxy/* @kbx81
 esphome/components/sfa30/* @ghsensdev
-esphome/components/sfa40/* @NoQuarrel
 esphome/components/sgp40/* @SenexCrenshaw
 esphome/components/sgp4x/* @martgras @SenexCrenshaw
 esphome/components/sha256/* @esphome/core
@@ -501,7 +492,6 @@ esphome/components/sm2335/* @Cossid
 esphome/components/sml/* @alengwenus
 esphome/components/smt100/* @piechade
 esphome/components/sn74hc165/* @jesserockz
-esphome/components/snapshot/* @clydebarrow
 esphome/components/socket/* @esphome/core
 esphome/components/sonoff_d1/* @anatoly-savchenkov
 esphome/components/sound_level/* @kahrendt
@@ -586,12 +576,10 @@ esphome/components/tuya/select/* @bearpawmaxim
 esphome/components/tuya/sensor/* @jesserockz
 esphome/components/tuya/switch/* @jesserockz
 esphome/components/tuya/text_sensor/* @dentra
-esphome/components/tuya/water_heater/* @iago-veiga
 esphome/components/uart/* @esphome/core
 esphome/components/uart/button/* @ssieb
 esphome/components/uart/event/* @eoasmxd
 esphome/components/uart/packet_transport/* @clydebarrow
-esphome/components/uart_mux/* @kbx81
 esphome/components/udp/* @clydebarrow
 esphome/components/ufire_ec/* @pvizeli
 esphome/components/ufire_ise/* @pvizeli

Doxyfile

@@ -48,7 +48,7 @@ PROJECT_NAME           = ESPHome
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = 2026.10.0-dev
+PROJECT_NUMBER         = 2026.9.0-dev
 
 # Using the PROJECT_BRIEF tag one can provide an optional one line description
 # for a project that appears at the top of each page and should give viewer a

THREAT_MODEL.md

@@ -23,8 +23,7 @@ For this repository there are two trusted inputs by design:
 1. **The configuration.** Anyone who can supply or edit a YAML config is trusted
    (see below).
 2. **Authenticated peers of a running device** — clients holding the device's
-   API/OTA encryption key, API password, OTA password, or web server
-   credentials.
+   API encryption key / password, OTA password, or web server credentials.
 
 The security boundary is therefore **unauthenticated network traffic vs. those
 trusted inputs.** A bug that lets an unauthenticated attacker cross it is a
@@ -77,8 +76,8 @@ These *are* security bugs in this repo, and we want to hear about them privately
   captive portal, etc.) **without** valid credentials.
 - Authentication or encryption bypass on the device — reaching API calls, OTA
   updates, or the web server without the configured key/password.
-- Flaws that weaken the device's API or OTA encryption (Noise), OTA auth, or
-  web server auth below their documented guarantees.
+- Flaws that weaken the device's API encryption (Noise), OTA, or web server auth
+  below their documented guarantees.
 
 ## The web server is an open HTTP API by design
 
@@ -122,54 +121,6 @@ and any memory-safety or protocol bug in the server reachable without credential
 This section documents the current design and scope; it is not a judgment that the
 design is optimal or that it will not change.
 
-## OTA update encryption
-
-The `esphome` OTA platform optionally encrypts updates with the same Noise
-`NNpsk0` pattern the native API uses; one key protects the device. A device
-whose `api:` block has an encryption key, static in the YAML or provisioned at
-runtime, compiles in the transport and offers it on every OTA connection once
-it holds a key, so an uploader presenting that key gets the guarantees below
-even without an `ota: encryption:` block; only that block makes the device
-require encryption. The guarantees are: the firmware image is confidential in
-transit, the uploader is authenticated by the pre-shared key, and the plaintext
-negotiation preceding the handshake is bound into the handshake prologue, so
-stripping or tampering with it fails the first MAC. With `ota: encryption:`
-configured both ends fail closed with no override: the device refuses
-plaintext uploads, and the CLI refuses to send plaintext when a key is
-configured. Without that block the CLI tries a static api key when the device
-offers and, until 2027.3.0, falls back to plaintext with a warning when the
-offer is missing or the handshake fails; a runtime provisioned key never
-reaches the CLI, so those uploads stay plaintext.
-
-Defeating any of that without the key is in scope: a device that requires
-encryption accepting a plaintext or downgraded upload, getting past the MAC,
-or recovering image contents from captured traffic.
-
-The following are **not** vulnerabilities, by design:
-
-- Plaintext OTA on a device with no `ota: encryption:` block, including one
-  that offers encryption because it has an api key. That is the documented
-  default, authenticated (if at all) by the OTA password. An uploader that
-  takes the offer skips the password; the key authenticates it. With a
-  runtime provisioned key and no `provisioning:` window, whoever provisions
-  the key gains that upload path too; validation warns about the pair.
-- The CLI plaintext fallback until 2027.3.0: without `ota: encryption:` an
-  active attacker who strips the offer or breaks the handshake can make a
-  keyed CLI upload plaintext, with the pre-existing plaintext exposure. A
-  device that requires encryption still refuses that upload.
-- The enablement window: firmware built with a static api key already offers
-  encryption, so turning on `ota: encryption:` is itself an encrypted upload.
-  Older firmware needs one last plaintext upload of an offering build, with
-  the pre-existing plaintext exposure.
-- The web OTA `/update` endpoint alongside encryption. With the `web_server`
-  or `prometheus` component the shared listener is always up, so the endpoint
-  stays reachable and validation warns about that combination;
-  `captive_portal:` alone brings the listener up only for the fallback AP
-  window, which is the intended recovery path, so that is not warned about.
-- CLI retry behavior on transport or MAC failures; every attempt renegotiates
-  a fresh handshake with fresh ephemerals, so retrying does not weaken
-  authentication.
-
 ## Explicitly out of scope
 
 - Local attackers who already have shell access on the host that runs `esphome`.

docker/Dockerfile

@@ -22,7 +22,7 @@ RUN \
     -r /requirements.txt
 
 # Install the ESPHome Device Builder dashboard.
-RUN uv pip install --no-cache-dir esphome-device-builder==1.14.9
+RUN uv pip install --no-cache-dir esphome-device-builder==1.12.4
 
 RUN \
     platformio settings set enable_telemetry No \

docker/generate_tags.py

@@ -1,6 +1,5 @@
 #!/usr/bin/env python3
 import argparse
-import os
 import re
 
 CHANNEL_DEV = "dev"
@@ -65,10 +64,7 @@ def main():
 
     suffix = f"-{args.suffix}" if args.suffix else ""
 
-    repository = (
-        (os.environ.get("GITHUB_REPOSITORY") or "esphome/esphome").strip().lower()
-    )
-    image_name = f"{repository}{suffix}"
+    image_name = f"esphome/esphome{suffix}"
 
     print(f"channel={channel}")
 

esphome/__main__.py

@@ -26,9 +26,7 @@ from esphome.const import (
     CONF_DEASSERT_RTS_DTR,
     CONF_DISABLED,
     CONF_DISCOVER_IP,
-    CONF_ENCRYPTION,
     CONF_ESPHOME,
-    CONF_KEY,
     CONF_LEVEL,
     CONF_LOG,
     CONF_LOG_TOPIC,
@@ -859,20 +857,7 @@ def compile_program(args: ArgsProtocol, config: ConfigType) -> int:
         toolchain.create_factory_bin()
         toolchain.create_ota_bin()
         toolchain.create_elf_copy()
-        from esphome.build_helpers.idedata import IDEDATA_BEST_EFFORT_ERRORS
-
-        try:
-            if toolchain.get_idedata() is None:
-                _LOGGER.warning("No idedata was generated for this build")
-        except IDEDATA_BEST_EFFORT_ERRORS as err:
-            # The firmware already built; an idedata failure must not fail
-            # a successful build.
-            _LOGGER.warning(
-                "Could not generate idedata: %s (IDE, clang-tidy, and "
-                "memory-analysis data will be unavailable for this build)",
-                err,
-            )
-            _LOGGER.debug("Idedata failure detail", exc_info=True)
+        toolchain.get_idedata()
     else:
         from esphome.platformio import toolchain
 
@@ -1335,28 +1320,9 @@ def _upload_via_native_api(
             break
 
     from esphome import espota2
-    from esphome.components.noise import static_encryption_key
 
     remote_port = int(ota_conf[CONF_PORT])
     password = ota_conf.get(CONF_PASSWORD)
-    # Fail closed: an encryption block whose key did not resolve must never
-    # fall back to a plaintext upload
-    noise_psk = None
-    plaintext_fallback = False
-    if (encryption_conf := ota_conf.get(CONF_ENCRYPTION)) is not None:
-        noise_psk = encryption_conf.get(CONF_KEY)
-        if not noise_psk:
-            raise EsphomeError(
-                "OTA encryption is configured but no key was resolved; "
-                "set the key under 'ota: encryption:' or 'api: encryption:'"
-            )
-        # Ensure the key is a string, as required by the underlying OTA implementation.
-        # It arrives here as a SensitiveStr which aioesphomeapi rejects.
-        noise_psk = str(noise_psk)
-    elif api_key := static_encryption_key(config.get(CONF_API) or {}):
-        # Remove before 2027.3.0: the api key is tried, falling back to plaintext
-        noise_psk = str(api_key)
-        plaintext_fallback = True
 
     def check_partition_access(option_string: str) -> None:
         if not ota_conf.get("allow_partition_access"):
@@ -1387,15 +1353,7 @@ def _upload_via_native_api(
     if ota_type == espota2.OTA_TYPE_UPDATE_BOOTLOADER:
         _validate_bootloader_binary(binary)
 
-    return espota2.run_ota(
-        network_devices,
-        remote_port,
-        password,
-        binary,
-        ota_type,
-        noise_psk,
-        plaintext_fallback=plaintext_fallback,
-    )
+    return espota2.run_ota(network_devices, remote_port, password, binary, ota_type)
 
 
 def _upload_via_web_server(
@@ -1404,16 +1362,6 @@ def _upload_via_web_server(
     from esphome import web_server_ota
     from esphome.web_server_helpers import get_web_server_connection
 
-    if any(
-        ota_item.get(CONF_PLATFORM) == CONF_ESPHOME
-        and ota_item.get(CONF_ENCRYPTION) is not None
-        for ota_item in config.get(CONF_OTA, [])
-    ):
-        _LOGGER.warning(
-            "This config has OTA encryption, but the web_server OTA path sends "
-            "the image over plaintext HTTP; use the esphome OTA platform to "
-            "keep it confidential"
-        )
     remote_port, username, password = get_web_server_connection(config)
     return web_server_ota.run_ota(
         network_devices, remote_port, username, password, binary
@@ -1709,26 +1657,20 @@ def command_compile(args: ArgsProtocol, config: ConfigType) -> int | None:
     if exit_code != 0:
         return exit_code
     if CORE.is_host:
-        _LOGGER.info(
-            "Successfully compiled program to path '%s'", _host_program_path(config)
-        )
+        if CORE.using_toolchain_esp_idf:
+            from esphome.espidf import toolchain
+
+            program_path = str(toolchain.get_elf_path())
+        else:
+            from esphome.platformio.toolchain import get_idedata
+
+            program_path = str(get_idedata(config).firmware_elf_path)
+        _LOGGER.info("Successfully compiled program to path '%s'", program_path)
     else:
         _LOGGER.info("Successfully compiled program.")
     return 0
 
 
-def _host_program_path(config: ConfigType) -> str:
-    """Return the compiled host ELF path."""
-    if CORE.using_toolchain_esp_idf:
-        from esphome.espidf import toolchain
-
-        return str(toolchain.get_elf_path())
-    from esphome.platformio.toolchain import get_idedata
-
-    # Memoized by compile_program's own call; this is a dict lookup
-    return str(get_idedata(config).firmware_elf_path)
-
-
 def command_upload(args: ArgsProtocol, config: ConfigType) -> int | None:
     # Get devices, resolving special identifiers like OTA
     devices = choose_upload_log_host(
@@ -1773,7 +1715,14 @@ def command_run(args: ArgsProtocol, config: ConfigType) -> int | None:
         return exit_code
     _LOGGER.info("Successfully compiled program.")
     if CORE.is_host:
-        program_path = _host_program_path(config)
+        if CORE.using_toolchain_esp_idf:
+            from esphome.espidf import toolchain
+
+            program_path = str(toolchain.get_elf_path())
+        else:
+            from esphome.platformio.toolchain import get_idedata
+
+            program_path = str(get_idedata(config).firmware_elf_path)
         _LOGGER.info("Running program from path '%s'", program_path)
         return run_external_process(program_path)
 
@@ -2772,14 +2721,10 @@ def run_esphome(argv):
     # Skipped when -s overrides are passed, since the cache was written
     # against the previous substitution set.
     config: ConfigType | None = None
-    cache_write_eligible = (
+    cache_eligible = (
         args.command in ("upload", "logs") and not command_line_substitutions
     )
-    # An explicit --toolchain must re-run the per-platform validators, so
-    # gate only the cache read; the refresh below saves the result unless
-    # the sidecar records a different toolchain.
-    cache_read_eligible = cache_write_eligible and args.toolchain is None
-    if cache_read_eligible:
+    if cache_eligible:
         from esphome.compiled_config import load_compiled_config
 
         config = load_compiled_config(conf_path)
@@ -2803,14 +2748,17 @@ def run_esphome(argv):
             return 2
     CORE.config = config
 
-    # The cache fast path skips validation, and legacy sidecars lack the
-    # toolchain field. Must run before the cache refresh below.
+    # Fallback for platforms whose validators didn't set the toolchain
+    # (only the esp32 component reads esp32.framework.toolchain). All
+    # other platforms only support PlatformIO today. Must run before the
+    # cache refresh below so its sidecar records the same toolchain a
+    # compile would.
     if CORE.toolchain is None:
         CORE.toolchain = Toolchain.PLATFORMIO
 
     # Refresh the cache so the next upload/logs hits the fast path
     # instead of re-running read_config.
-    if cache_write_eligible and cache_missed:
+    if cache_eligible and cache_missed:
         from esphome.compiled_config import save_compiled_config_and_sidecar
 
         save_compiled_config_and_sidecar(config)

esphome/api_client.py

@@ -23,7 +23,9 @@ from esphome.util import safe_print
 if TYPE_CHECKING:
     from collections.abc import Callable
 
-    from aioesphomeapi.api_pb2 import SubscribeLogsResponse  # pylint: disable=no-name-in-module
+    from aioesphomeapi.api_pb2 import (
+        SubscribeLogsResponse,  # pylint: disable=no-name-in-module
+    )
 
 
 _LOGGER = logging.getLogger(__name__)

esphome/arduino/library.py

@@ -1,531 +0,0 @@
-"""Arduino-core backend for the shared PlatformIO library converter.
-
-Bundled names build straight from the framework tree; everything else goes
-through ``esphome.platformio.library``. Mirrors ``lib_ldf_mode=off``: each
-library builds its own archive; all include dirs join one global path.
-
-Deviations from PlatformIO: flat-layout libraries get the recursive default
-source filter; ``dot_a_linkage`` is honored; bundled libraries never run a
-manifest ``extraScript``; manifest ``-I`` flags join the global include path;
-``precompiled``/``ldflags`` properties are refused by name.
-"""
-
-from __future__ import annotations
-
-from dataclasses import dataclass, field
-import logging
-from pathlib import Path
-import re
-
-from esphome.core import CORE, EsphomeError, Library
-from esphome.helpers import walk_files
-from esphome.platformio.extra_script import apply_extra_script
-from esphome.platformio.library import (
-    DEFAULT_BUILD_INCLUDE_DIR,
-    DEFAULT_BUILD_SRC_FILTER,
-    ESPHOME_DATA_KEY,
-    ESPHOME_DATA_LINK_FLAGS_KEY,
-    LIBRARY_HEADER_SUFFIXES,
-    SRC_FILE_EXTENSIONS,
-    ConvertedLibrary,
-    IncompatiblePlatform,
-    InvalidLibrary,
-    LibraryBackend,
-    _url_or_none,
-    check_library_data,
-    collect_filtered_files,
-    convert_libraries,
-    ensure_list,
-    is_lib_ignored,
-    lex_build_flags,
-    lib_ignore_set,
-    normalize_dependencies,
-    parse_library_json,
-    parse_library_properties,
-    warn_properties_depends,
-)
-
-_LOGGER = logging.getLogger(__name__)
-
-
-@dataclass
-class ArduinoLibrary:
-    """One resolved library, ready for the ninja generator."""
-
-    name: str
-    sources: list[Path] = field(default_factory=list)
-    include_dirs: list[Path] = field(default_factory=list)
-    # Extra compile flags private to this library's own sources
-    flags: list[str] = field(default_factory=list)
-    # PlatformIO's build.libArchive / Arduino's dot_a_linkage: when False the
-    # objects go to the linker directly (symbols nothing references survive)
-    lib_archive: bool = True
-    # Link inputs the library contributes (-L dirs / -l libs, e.g. from
-    # precompiled vendor blobs) and -Wl, options for the firmware link
-    link_dirs: list[Path] = field(default_factory=list)
-    link_libs: list[str] = field(default_factory=list)
-    link_flags: list[str] = field(default_factory=list)
-
-
-# Source-like suffixes the case-sensitive suffix map rejects
-_UNMAPPED_SOURCE_SUFFIXES = frozenset(
-    {s.lower() for s in SRC_FILE_EXTENSIONS} | {".ino"}
-)
-
-# Filename-plain names: an allowlist excludes separators, drive colons,
-# and dot-only names by shape
-_SAFE_LIBRARY_NAME_RE = re.compile(r"[A-Za-z0-9_][A-Za-z0-9_. +-]*\Z")
-
-
-def _is_safe_library_name(name: object) -> bool:
-    """Whether a name may be joined under the framework's libraries dir."""
-    return isinstance(name, str) and _SAFE_LIBRARY_NAME_RE.fullmatch(name) is not None
-
-
-def _manifest_build(name: str, data: object) -> dict:
-    """The manifest's ``build`` section; malformed manifests fail by name."""
-    build = data.get("build", {}) if isinstance(data, dict) else None
-    if not isinstance(build, dict):
-        raise EsphomeError(f"Library {name} has a malformed manifest")
-    return build
-
-
-def _resolve_src_dir(name: str, read_path: Path, build: dict) -> str:
-    """Resolve PIO's source dir: manifest srcDir, else src/Src, else the root."""
-    if "srcDir" not in build:
-        return next((d for d in ("src", "Src") if (read_path / d).is_dir()), ".")
-    # A declared srcDir (falsy included) that does not resolve is a manifest error
-    src_dir = build["srcDir"]
-    if not (isinstance(src_dir, str) and src_dir and (read_path / src_dir).is_dir()):
-        raise EsphomeError(
-            f"Library {name} declares srcDir {src_dir!r} which does not exist"
-        )
-    return src_dir
-
-
-def _reject_unsupported_link_fields(name: str, data: dict) -> None:
-    # PIO honors these; ignoring them would fail at link with no stated
-    # cause. Property values are strings, so "false" is not a declaration.
-    precompiled = data.get("precompiled")
-    if precompiled and str(precompiled).strip().lower() != "false":
-        raise EsphomeError(
-            f"Library {name} declares precompiled, which this backend does not support"
-        )
-    if data.get("ldflags"):
-        raise EsphomeError(
-            f"Library {name} declares ldflags, which this backend does not support"
-        )
-
-
-def _resolve_lib_archive(name: str, data: dict, build: dict) -> bool:
-    """build.libArchive, else dot_a_linkage (an Arduino IDE property PIO
-    ignores; a deliberate extra), else archive."""
-
-    # Strict parse: bool("false") is True
-    def _parse(key: str, raw: object) -> bool:
-        if isinstance(raw, bool):
-            return raw
-        value = str(raw).strip().lower()
-        if value in ("true", "false"):
-            return value == "true"
-        raise EsphomeError(f"Library {name} has a malformed {key} value {raw!r}")
-
-    if "libArchive" in build:
-        return _parse("libArchive", build["libArchive"])
-    if "dot_a_linkage" in data:
-        return _parse("dot_a_linkage", data["dot_a_linkage"])
-    return True
-
-
-def _classify_build_flags(
-    name: str, read_path: Path, lib: ArduinoLibrary, flag_tokens: list[str]
-) -> list[str]:
-    """Route the lexed build.flags into the library's flag lists.
-
-    Returns the ``-I`` arguments for the include-dir resolution.
-    """
-    include_flags: list[str] = []
-    for tok in flag_tokens:
-        if tok.startswith("-I"):
-            include_flags.append(tok[2:])
-        elif tok.startswith("-L"):
-            link_dir = (read_path / tok[2:]).resolve()
-            if not link_dir.is_dir():
-                # Kept (the linker ignores missing -L dirs); the warning
-                # names the culprit before a bare "cannot find -lfoo"
-                _LOGGER.warning(
-                    "Library %s declares library dir %s which does not exist",
-                    name,
-                    tok[2:],
-                )
-            lib.link_dirs.append(link_dir)
-        elif tok.startswith("-l"):
-            lib.link_libs.append(tok[2:])
-        elif tok.startswith("-Wl,"):
-            lib.link_flags.append(tok)
-        else:
-            lib.flags.append(tok)
-    return include_flags
-
-
-def _resolve_include_dirs(
-    name: str,
-    read_path: Path,
-    lib: ArduinoLibrary,
-    build: dict,
-    src_dir: str,
-    include_flags: list[str],
-) -> None:
-    include_dir = build.get("includeDir", DEFAULT_BUILD_INCLUDE_DIR)
-    if not isinstance(include_dir, str):
-        raise EsphomeError(f"Library {name} has a malformed includeDir")
-    for d, explicit in [
-        (include_dir, "includeDir" in build),
-        (src_dir, False),  # _resolve_src_dir already validated it
-        *((flag, True) for flag in include_flags),
-    ]:
-        if (path := (read_path / d)).is_dir():
-            lib.include_dirs.append(path.resolve())
-        elif explicit:
-            # Warn-and-drop (unlike srcDir): a missing include dir is
-            # harmless until a header is needed, and the compile names it
-            _LOGGER.warning(
-                "Library %s declares include dir %s which does not exist", name, d
-            )
-
-
-def _collect_lib_sources(
-    name: str,
-    read_path: Path,
-    lib: ArduinoLibrary,
-    src_dir: str,
-    src_filter: list[str],
-) -> None:
-    sources: list[Path] = []
-    dropped: list[str] = []
-    saw_header = False
-    for f in collect_filtered_files(read_path / src_dir, src_filter):
-        path = Path(f)
-        suffix = path.suffix
-        if suffix in SRC_FILE_EXTENSIONS:
-            # resolve() per file: srcFilter patterns may escape src_dir
-            sources.append(path.resolve())
-        elif suffix.lower() in _UNMAPPED_SOURCE_SUFFIXES:
-            # A source-like suffix the case-sensitive map rejects (.CPP,
-            # .ino) is a dropped compilation unit; headers fall through
-            dropped.append(path.name)
-        elif suffix.lower() in LIBRARY_HEADER_SUFFIXES:
-            saw_header = True
-    lib.sources = sorted(sources)
-    if dropped:
-        _LOGGER.warning(
-            "Library %s: %d file(s) with unmapped source suffixes are not compiled: %s",
-            name,
-            len(dropped),
-            ", ".join(sorted(dropped)),
-        )
-    if not lib.sources and not saw_header:
-        # Matched headers mean header-only; a filter matching nothing is
-        # a manifest/tree problem (a truly empty tree raises elsewhere)
-        _LOGGER.warning("Library %s: no source files matched", name)
-
-
-def _library_info(name: str, read_path: Path, data: dict) -> ArduinoLibrary:
-    """Resolve one library's sources, include dirs, and flags (PIO semantics)."""
-    build = _manifest_build(name, data)
-    _reject_unsupported_link_fields(name, data)
-    src_dir = _resolve_src_dir(name, read_path, build)
-    src_filter = ensure_list(build.get("srcFilter", DEFAULT_BUILD_SRC_FILTER))
-    if not all(isinstance(entry, str) for entry in src_filter):
-        raise EsphomeError(f"Library {name} has a malformed srcFilter")
-    lib = ArduinoLibrary(name=name, lib_archive=_resolve_lib_archive(name, data, build))
-    # PlatformIO shell-lexes each build.flags entry
-    include_flags = _classify_build_flags(
-        name, read_path, lib, lex_build_flags(build.get("flags", []), f"library {name}")
-    )
-    _resolve_include_dirs(name, read_path, lib, build, src_dir, include_flags)
-    _collect_lib_sources(name, read_path, lib, src_dir, src_filter)
-    return lib
-
-
-def _bundled_library(framework_path: Path, name: str) -> ArduinoLibrary:
-    """A library bundled with the Arduino core, read from the framework tree.
-
-    ``library.json`` wins over ``library.properties`` when both exist, as in
-    PlatformIO's LibBuilderFactory; only the JSON manifest can carry a
-    ``build`` section (srcDir, srcFilter, flags).
-    """
-    lib_dir = framework_path / "libraries" / name
-    manifest_json = lib_dir / "library.json"
-    if manifest_json.is_file():
-        try:
-            data = parse_library_json(manifest_json)
-        except ValueError as err:  # JSONDecodeError
-            raise EsphomeError(
-                f"Bundled library {name} has a corrupt library.json ({err}); "
-                "the framework install may be incomplete (run 'esphome clean-all')"
-            ) from err
-    elif (manifest := lib_dir / "library.properties").is_file():
-        data = parse_library_properties(manifest)
-    else:
-        # Debug, not warning: the legacy manifest-less layout is legal and
-        # the 3.1.2 core ships one such library (FSTools), so a warning
-        # would be unactionable noise on every build using it
-        _LOGGER.debug("Bundled library %s has no manifest; using defaults", name)
-        data = {}
-    if isinstance(data, dict):
-        # Bundled manifest deps are never walked; make the skip visible
-        if data.get("dependencies"):
-            _LOGGER.warning(
-                "Bundled library %s declares dependencies, which are not "
-                "resolved automatically; add them with add_library() if needed",
-                name,
-            )
-        warn_properties_depends(name, data)
-        build = data.get("build")
-        if isinstance(build, dict) and build.get("extraScript"):
-            # Scripts only run on the converted path; building without
-            # the script's flags would miscompile
-            raise EsphomeError(
-                f"Bundled library {name} declares an extraScript, which is "
-                "not run for bundled libraries"
-            )
-    lib = _library_info(name, lib_dir, data)
-    _assert_tree_has_code(
-        name,
-        lib_dir,
-        "the framework install may be incomplete (run 'esphome clean-all')",
-    )
-    return lib
-
-
-def _assert_tree_has_code(name: str, root: Path, hint: str) -> None:
-    """An empty or half-extracted tree can never link; fail by name (a
-    warning would scroll away and resurface as undefined symbols)."""
-    if not any(
-        Path(p).suffix in SRC_FILE_EXTENSIONS
-        or Path(p).suffix.lower() in LIBRARY_HEADER_SUFFIXES
-        for p in walk_files(root)
-    ):
-        raise EsphomeError(f"Library {name} has no sources or headers; {hint}")
-
-
-def _external_short_name(name: str) -> str:
-    """The short library name of a requested spec.
-
-    "owner/Name" and plain names take the last path segment; "Name=<url>"
-    takes the declared name. Git tails (".git", "#ref") are stripped like
-    the walk's URL normalization; the comparand is a manifest dependency
-    name, never a spec.
-    """
-    head, sep, tail = name.partition("=")
-    if sep and "://" in tail:
-        return head
-    short = name.rsplit("/", maxsplit=1)[-1]
-    return short.partition("#")[0].removesuffix(".git")
-
-
-def _check_unfulfilled_provides(
-    provided_requests: set[str], satisfied: set[str], still_requested: set[str]
-) -> None:
-    """Fail by name when a walk-skipped dependency was never added.
-
-    An unfulfilled provides() promise only surfaces as undefined symbols
-    at link. The walk records across re-resolutions, so a name no final
-    manifest still requests is stale state, never a failure.
-    """
-    if missing := sorted((provided_requests & still_requested) - satisfied):
-        raise EsphomeError(
-            "provides() skipped these dependencies but nothing added them: "
-            f"{', '.join(missing)}; the build is missing libraries"
-        )
-
-
-def resolve_libraries(
-    framework_path: Path, *, pio_platform: str, board_mcu: str, cache_key: str
-) -> list[ArduinoLibrary]:
-    """Resolve every ``cg.add_library()`` entry into an :class:`ArduinoLibrary`.
-
-    ``pio_platform``/``board_mcu`` filter manifests the way PlatformIO would
-    for that core (e.g. ``espressif8266``/``esp8266``); ``cache_key`` keys the
-    shared converter's download cache.
-
-    The returned list is not topologically sorted, so the caller must link
-    the archives inside one ``--start-group``/``--end-group`` pair (the
-    bundled-first grouping is incidental).
-    """
-    bundled: list[ArduinoLibrary] = []
-    external: list[Library] = []
-    # PlatformIO's lib_ignore covers framework-bundled libraries too; the
-    # shared converter only filters the registry/git ones.
-    lib_ignore = lib_ignore_set()
-    # Exact directory names keep membership case-sensitive everywhere
-    # (an is_dir() probe would match "wire" on macOS/Windows and build
-    # the bundled Wire twice)
-    libraries_dir = framework_path / "libraries"
-    if not libraries_dir.is_dir():
-        # A registry fallback would fail later with a misleading
-        # package-not-found error per bundled name
-        raise EsphomeError(
-            f"{libraries_dir} is missing; the framework install may be "
-            "incomplete (run 'esphome clean-all')"
-        )
-    bundled_dir_names = frozenset(p.name for p in libraries_dir.iterdir() if p.is_dir())
-
-    def _provided(name: object) -> bool:
-        return _is_safe_library_name(name) and name in bundled_dir_names
-
-    for library in CORE.platformio_libraries.values():
-        if is_lib_ignored(library.name, lib_ignore):
-            continue
-        # Bundled only for a bare name with a matching framework dir; pinned
-        # or unmatched names resolve from the registry, as under PlatformIO.
-        if not library.repository and not library.version and _provided(library.name):
-            # Bundled manifest deps are not walked; _bundled_library warns
-            bundled.append(_bundled_library(framework_path, library.name))
-        else:
-            external.append(library)
-
-    converted: list[ArduinoLibrary] = []
-    bundled_names = {lib.name for lib in bundled}
-    converted_manifest_names: set[str] = set()
-    # Bundled candidates skipped on purpose (platform filter); the
-    # provides() reconciliation must count them as satisfied
-    knowingly_skipped: set[str] = set()
-    # Dependency names of the manifests actually emitted; a walk recording
-    # for a since-re-resolved manifest must not fail the reconciliation
-    final_dep_names: set[str] = set()
-    # Ordered set of bundled dependency names to add once conversion is done
-    pending_bundled: dict[str, None] = {}
-    # Deps matching a separately-requested external are already in the build
-    # (a duplicate archive means duplicate-symbol link errors)
-    external_short_names = {
-        _external_short_name(lib.name) for lib in external if lib.name
-    }
-
-    def _add_bundled_dependencies(component: ConvertedLibrary) -> None:
-        # A version-less bare name ("Hash") is a core-bundled library the
-        # shared converter cannot resolve from the registry
-        for dep in normalize_dependencies(
-            component.data.get("dependencies"), component.name
-        ):
-            # normalize_dependencies guarantees a non-empty str name
-            name = dep["name"]
-            final_dep_names.add(name)
-            if "/" in name:
-                owner, _, pkg = name.partition("/")
-                if _is_safe_library_name(owner) and _is_safe_library_name(pkg):
-                    # Owner-qualified; the converter resolves it from the registry
-                    continue
-            if not _is_safe_library_name(name):
-                # The name becomes a path component; never join a traversal
-                _LOGGER.warning(
-                    "Ignoring malformed dependency entry %r of library %s",
-                    dep,
-                    component.name,
-                )
-                continue
-            if name in external_short_names:
-                if _provided(name):
-                    # A bundled copy is suppressed; a coincidental name
-                    # collision would surface as link errors
-                    _LOGGER.warning(
-                        "Dependency %s of %s is assumed satisfied by a "
-                        "requested external library; the bundled copy is "
-                        "not added",
-                        name,
-                        component.name,
-                    )
-                else:
-                    _LOGGER.debug(
-                        "Dependency %s of %s assumed satisfied by a requested "
-                        "external library",
-                        name,
-                        component.name,
-                    )
-                continue
-            if name in bundled_names or is_lib_ignored(name, lib_ignore):
-                continue
-            if _url_or_none(dep.get("version")) is not None:
-                # A URL names one specific source; never add the bundled copy
-                continue
-            if dep.get("owner") or not _provided(name):
-                # Only owner-less framework-tree names take the bundled
-                # copy (PIO's process_dependencies); the walk reports drops
-                continue
-            try:
-                # framework=None: the walk already warned for non-platform
-                # causes; debug keeps one fault from warning twice (pinned
-                # by test_nonplatform_rejection_warns_once_through_real_converter)
-                check_library_data(dep, pio_platform, None)
-            except IncompatiblePlatform as err:
-                # A knowing skip (platform filter), not a broken promise
-                knowingly_skipped.add(name)
-                _LOGGER.debug("Skip bundled candidate %s: %s", name, err)
-                continue
-            except InvalidLibrary as err:
-                # Malformed manifest data never counts as satisfied; the
-                # walk owns the warning (see the warns-once test above)
-                _LOGGER.debug("Skip malformed bundled candidate %s: %s", name, err)
-                continue
-            # Deferred: a later manifest name may satisfy this
-            pending_bundled.setdefault(name)
-
-    def _emit(component: ConvertedLibrary) -> None:
-        apply_extra_script(
-            component, board_mcu=lambda: board_mcu, pio_platform=pio_platform
-        )
-        _assert_tree_has_code(
-            component.get_require_name(),
-            component.source_dir,
-            "the download may be incomplete (run 'esphome clean-all')",
-        )
-        if isinstance(manifest_name := component.data.get("name"), str):
-            converted_manifest_names.add(manifest_name)
-        lib = _library_info(
-            component.get_require_name(), component.source_dir, component.data
-        )
-        # Extra-script LINKFLAGS travel outside build.flags; dropping
-        # them would link wrong with no stated cause
-        lib.link_flags.extend(
-            component.data.get(ESPHOME_DATA_KEY, {}).get(
-                ESPHOME_DATA_LINK_FLAGS_KEY, []
-            )
-        )
-        converted.append(lib)
-        _add_bundled_dependencies(component)
-
-    backend = LibraryBackend(
-        platform=pio_platform,
-        framework="arduino",
-        emit=_emit,
-        cache_key=cache_key,
-        # The walk must not resolve bundled names from the registry;
-        # _add_bundled_dependencies adds them after emit
-        provides=_provided,
-    )
-    if external:
-        convert_libraries(external, backend)
-    for name in pending_bundled:
-        if name in converted_manifest_names:
-            # The converted library is this one; the bundled copy would
-            # double the archive. Warn like the external_short_names twin.
-            _LOGGER.warning(
-                "Dependency %s is assumed satisfied by a converted library's "
-                "manifest name; the bundled copy is not added",
-                name,
-            )
-            continue
-        bundled_names.add(name)
-        bundled.append(_bundled_library(framework_path, name))
-
-    _check_unfulfilled_provides(
-        backend.provided_requests,
-        bundled_names
-        | converted_manifest_names
-        | external_short_names
-        | knowingly_skipped,
-        final_dep_names,
-    )
-
-    return bundled + converted

esphome/arduino8266/__init__.py

@@ -1,9 +0,0 @@
-"""Native (PlatformIO-free) build support for the ESP8266 Arduino core.
-
-This package downloads the Arduino ESP8266 core and the xtensa-lx106
-toolchain, generates a ninja build for them plus the ESPHome sources, and
-drives the build directly — the ESP8266 equivalent of ``esphome.espidf``.
-
-Deliberately importable without the esp8266 component to avoid circular
-imports; the component wires these modules in via lazy imports.
-"""

esphome/arduino8266/framework.py

@@ -1,159 +0,0 @@
-"""Download and install the Arduino ESP8266 core, toolchain, and ninja.
-
-Artifacts land in a machine-global cache (shared across projects, like the
-ESP-IDF install in ``esphome.espidf.framework``):
-
-    <cache>/arduino8266/frameworks/<version>/   framework-arduinoespressif8266
-    <cache>/arduino8266/toolchains/<version>/   toolchain-xtensa (gcc 10.3)
-
-Packages come from the PlatformIO registry (identical bits to the PlatformIO
-backend); ``ESPHOME_ARDUINO8266_*_MIRRORS`` overrides the URLs. ninja comes
-from PATH or the ninja PyPI wheel.
-"""
-
-from __future__ import annotations
-
-import os
-from pathlib import Path
-from typing import NamedTuple
-
-from esphome.build_helpers.ccache import ccache_defaults_env
-from esphome.build_helpers.ninja import find_ninja
-from esphome.build_helpers.tools_cache import ARDUINO8266_TOOLS_CACHE, tools_cache_path
-from esphome.core import EsphomeError, Version
-from esphome.framework_helpers import str_to_lst_of_str
-from esphome.platformio.registry import install_package, prefetch_packages
-
-FRAMEWORK_PACKAGE = "framework-arduinoespressif8266"
-TOOLCHAIN_PACKAGE = "toolchain-xtensa"
-# gcc 10.3, the toolchain Arduino core 3.x builds with; the build
-# generator's compile flags are tuned to it.
-TOOLCHAIN_VERSION = "2.100300.220621"
-
-ESPHOME_ARDUINO8266_FRAMEWORK_MIRRORS = str_to_lst_of_str(
-    os.environ.get("ESPHOME_ARDUINO8266_FRAMEWORK_MIRRORS", "")
-)
-ESPHOME_ARDUINO8266_TOOLCHAIN_MIRRORS = str_to_lst_of_str(
-    os.environ.get("ESPHOME_ARDUINO8266_TOOLCHAIN_MIRRORS", "")
-)
-
-
-def get_arduino8266_tools_path() -> Path:
-    # Machine-global so all projects share one install; see
-    # espidf.framework.get_idf_tools_path for the location rationale.
-    return tools_cache_path(*ARDUINO8266_TOOLS_CACHE)
-
-
-# 3.1.1 rather than 3.1.0: the registry has no packages for 3.0.0, 3.0.1 or 3.1.0
-MIN_FRAMEWORK_VERSION = Version(3, 1, 1)
-
-
-def framework_package_version(ver: Version) -> str:
-    """Map an Arduino core version to its registry package version (3.1.2 ->
-    3.30102.0; the leading 3 is the package major).
-
-    Exact registry names for 3.x cores; callers floor at MIN_FRAMEWORK_VERSION.
-    """
-    if ver.major > 3:
-        raise EsphomeError(
-            f"Arduino core {ver} is not supported yet; "
-            "the newest known core series is 3.x"
-        )
-    if ver.major < 3:
-        raise EsphomeError(
-            f"Arduino core {ver} is not supported; ESPHome requires core 3.x"
-        )
-    return f"3.{ver.major}{ver.minor:02d}{ver.patch:02d}.0"
-
-
-def get_framework_path(package_version: str) -> Path:
-    return get_arduino8266_tools_path() / "frameworks" / package_version
-
-
-def get_toolchain_path() -> Path:
-    return get_arduino8266_tools_path() / "toolchains" / TOOLCHAIN_VERSION
-
-
-class InstalledPaths(NamedTuple):
-    """Locations of the installed framework, toolchain, and ninja binary."""
-
-    framework: Path
-    toolchain: Path
-    ninja: Path
-
-
-def check_and_install(framework_version: Version) -> InstalledPaths:
-    """Ensure framework, toolchain, and ninja are installed; return their paths."""
-    if framework_version < MIN_FRAMEWORK_VERSION:
-        # Config validation enforces this too; keep the module honest when
-        # called directly.
-        raise EsphomeError(
-            f"The native toolchain requires the Arduino core "
-            f">= {MIN_FRAMEWORK_VERSION}, got {framework_version}"
-        )
-    # Probe the cheap local dependency before ~110 MB of downloads
-    ninja_path = find_ninja()
-    package_version = framework_package_version(framework_version)
-    framework_path = get_framework_path(package_version)
-    downloads_dir = get_arduino8266_tools_path() / "downloads"
-    toolchain_path = get_toolchain_path()
-    # One spec per package: the prefetch and the installs must agree
-    specs = (
-        (
-            FRAMEWORK_PACKAGE,
-            package_version,
-            framework_path,
-            ESPHOME_ARDUINO8266_FRAMEWORK_MIRRORS,
-            ("cores/esp8266", "tools/sdk", "libraries"),
-        ),
-        (
-            TOOLCHAIN_PACKAGE,
-            TOOLCHAIN_VERSION,
-            toolchain_path,
-            ESPHOME_ARDUINO8266_TOOLCHAIN_MIRRORS,
-            # xtensa-lx106-elf pins the target: every gcc package has a bin/
-            ("bin", "xtensa-lx106-elf"),
-        ),
-    )
-    # Fetch both archives at once; the installs below verify and extract
-    prefetch_packages([spec[:4] for spec in specs], downloads_dir)
-    for name, version, dest, mirrors, expect in specs:
-        install_package(name, version, dest, mirrors, downloads_dir, expect=expect)
-    return InstalledPaths(
-        framework=framework_path, toolchain=toolchain_path, ninja=ninja_path
-    )
-
-
-def toolchain_tool(toolchain_path: Path, name: str) -> Path:
-    """Path to one toolchain tool (gcc, g++, ar, size, addr2line, ...).
-
-    The single owner of the ``bin/xtensa-lx106-elf-<name>`` layout and the
-    Windows suffix, so a toolchain package bump touches one spot.
-    """
-    suffix = ".exe" if os.name == "nt" else ""
-    return toolchain_path / "bin" / f"xtensa-lx106-elf-{name}{suffix}"
-
-
-def get_build_env(toolchain_path: Path, ccache: str | None) -> dict[str, str]:
-    env = os.environ.copy()
-    # Drop empty entries: a trailing separator from an absent PATH would
-    # make the shell search the current directory for tools
-    parts = [
-        str(toolchain_path / "bin"),
-        *filter(None, env.get("PATH", "").split(os.pathsep)),
-    ]
-    env["PATH"] = os.pathsep.join(parts)
-    env.update(ccache_env(ccache))
-    return env
-
-
-def ccache_env(ccache: str | None) -> dict[str, str]:
-    """Return ccache settings for the build subprocess (not os.environ).
-
-    ``ccache`` is the pre-resolved binary (resolve_ccache_path), or None
-    when disabled. Values the user already set in the environment are
-    respected.
-    """
-    if ccache is None:
-        return {}
-    return ccache_defaults_env(get_arduino8266_tools_path() / "ccache")

esphome/automation.py

@@ -102,101 +102,6 @@ def register_condition(name: str, condition_type: MockObjClass, schema: cv.Schem
     return CONDITION_REGISTRY.register(name, condition_type, schema)
 
 
-async def _build_with_parent(
-    config: ConfigType,
-    automation_id: ID,
-    template_arg: cg.TemplateArguments,
-    args: TemplateArgsType,
-) -> MockObj:
-    parent = await cg.get_variable(config[CONF_ID])
-    return cg.new_Pvariable(automation_id, template_arg, parent)
-
-
-async def _build_without_parent(
-    config: ConfigType,
-    automation_id: ID,
-    template_arg: cg.TemplateArguments,
-    args: TemplateArgsType,
-) -> MockObj:
-    return cg.new_Pvariable(automation_id, template_arg)
-
-
-async def _build_parented(
-    config: ConfigType,
-    automation_id: ID,
-    template_arg: cg.TemplateArguments,
-    args: TemplateArgsType,
-) -> MockObj:
-    var = cg.new_Pvariable(automation_id, template_arg)
-    await cg.register_parented(var, config[CONF_ID])
-    return var
-
-
-def register_simple_action(
-    name: str,
-    action_type: MockObjClass,
-    schema: cv.Schema,
-    *,
-    synchronous: bool,
-) -> None:
-    """Register an action whose constructor takes the object named by ``config[CONF_ID]``.
-
-    Use the ``register_action`` decorator instead when the builder must also set fields.
-    """
-    register_action(name, action_type, schema, synchronous=synchronous)(
-        _build_with_parent
-    )
-
-
-def register_simple_condition(
-    name: str, condition_type: MockObjClass, schema: cv.Schema
-) -> None:
-    """Condition counterpart of ``register_simple_action``."""
-    register_condition(name, condition_type, schema)(_build_with_parent)
-
-
-def register_bare_action(
-    name: str,
-    action_type: MockObjClass,
-    schema: cv.Schema,
-    *,
-    synchronous: bool,
-) -> None:
-    """Register an action whose constructor takes no arguments."""
-    register_action(name, action_type, schema, synchronous=synchronous)(
-        _build_without_parent
-    )
-
-
-def register_bare_condition(
-    name: str, condition_type: MockObjClass, schema: cv.Schema
-) -> None:
-    """Condition counterpart of ``register_bare_action``."""
-    register_condition(name, condition_type, schema)(_build_without_parent)
-
-
-def register_parented_action(
-    name: str,
-    action_type: MockObjClass,
-    schema: cv.Schema,
-    *,
-    synchronous: bool,
-) -> None:
-    """Register an action deriving from ``Parented<T>``.
-
-    The object is constructed without arguments and ``set_parent()`` receives the object
-    named by ``config[CONF_ID]``.
-    """
-    register_action(name, action_type, schema, synchronous=synchronous)(_build_parented)
-
-
-def register_parented_condition(
-    name: str, condition_type: MockObjClass, schema: cv.Schema
-) -> None:
-    """Condition counterpart of ``register_parented_action``."""
-    register_condition(name, condition_type, schema)(_build_parented)
-
-
 Action = cg.esphome_ns.class_("Action")
 Trigger = cg.esphome_ns.class_("Trigger")
 ACTION_REGISTRY = Registry()
@@ -629,20 +534,44 @@ async def lambda_action_to_code(
     return new_lambda_pvariable(action_id, lambda_, StatelessLambdaAction, template_arg)
 
 
-register_simple_action(
+@register_action(
     "component.update",
     UpdateComponentAction,
-    maybe_simple_id({cv.Required(CONF_ID): cv.use_id(cg.PollingComponent)}),
+    maybe_simple_id(
+        {
+            cv.Required(CONF_ID): cv.use_id(cg.PollingComponent),
+        }
+    ),
     synchronous=True,
 )
+async def component_update_action_to_code(
+    config: ConfigType,
+    action_id: ID,
+    template_arg: cg.TemplateArguments,
+    args: TemplateArgsType,
+) -> MockObj:
+    comp = await cg.get_variable(config[CONF_ID])
+    return cg.new_Pvariable(action_id, template_arg, comp)
 
 
-register_simple_action(
+@register_action(
     "component.suspend",
     SuspendComponentAction,
-    maybe_simple_id({cv.Required(CONF_ID): cv.use_id(cg.PollingComponent)}),
+    maybe_simple_id(
+        {
+            cv.Required(CONF_ID): cv.use_id(cg.PollingComponent),
+        }
+    ),
     synchronous=True,
 )
+async def component_suspend_action_to_code(
+    config: ConfigType,
+    action_id: ID,
+    template_arg: cg.TemplateArguments,
+    args: TemplateArgsType,
+) -> MockObj:
+    comp = await cg.get_variable(config[CONF_ID])
+    return cg.new_Pvariable(action_id, template_arg, comp)
 
 
 @register_action(

esphome/build_gen/build_tool.py

@@ -1,108 +0,0 @@
-"""Tiny cross-platform build steps invoked from the generated ninja file.
-
-Plain script (not ``python -m``): it runs from ninja with whatever Python
-started esphome and must not depend on the package being importable.
-
-Subcommands:
-    ar <ar-binary> <archive> <rspfile>   remove stale archive, then ``ar rcs``
-    copy <src> <dst>                     copy a file
-
-The ar rspfile carries one object path per line (the generating rule must
-use ``$in_newline``, never ``$in``).
-"""
-
-from pathlib import Path
-import shutil
-import subprocess
-import sys
-
-
-def _read_rspfile(rspfile: str) -> list[str]:
-    r"""The object paths listed in ``rspfile``, unquoted.
-
-    GNU ar treats backslashes in response files as escapes (corrupts
-    Windows paths), so the caller expands the list into argv; strip the
-    simple surrounding quote ninja adds to special paths, then undo
-    ninja's POSIX escape for an embedded quote ('a'\\''b.o' -> a'b.o).
-    """
-    return [
-        line[1:-1].replace("'\\''", "'")
-        if len(line) >= 2 and line[0] == line[-1] and line[0] in "'\""
-        else line
-        for line in Path(rspfile).read_text(encoding="utf-8").splitlines()
-        if line
-    ]
-
-
-def _run_ar(ar: str, archive: str, rspfile: str) -> int:
-    # Remove first: ``ar rcs`` replaces members but never drops ones whose
-    # source was removed from the build, which would leak stale objects.
-    Path(archive).unlink(missing_ok=True)
-    objects = _read_rspfile(rspfile)
-    if not objects:
-        # An empty archive would "succeed" here and fail far away at link
-        print(f"ar: no objects listed in {rspfile} for {archive}", file=sys.stderr)
-        return 1
-    # Batch by argv length: expanding the rspfile gives back the Windows
-    # 32767-char command-line limit it existed to avoid. "rcs" creates,
-    # "qs" appends; the s keeps the symbol index explicit on every ar.
-    op = "rcs"
-    ok = False
-    try:
-        while objects:
-            batch = [objects.pop(0)]
-            batch_len = len(batch[0])
-            while objects and batch_len + len(objects[0]) < 25000:
-                batch_len += len(objects[0]) + 1
-                batch.append(objects.pop(0))
-            rc = subprocess.run(
-                [ar, op, archive, *batch], check=False, close_fds=False
-            ).returncode
-            if rc != 0:
-                return rc
-            op = "qs"
-        ok = True
-        return 0
-    finally:
-        if not ok:
-            # Any failure (bad exit, missing ar binary, interrupt) must not
-            # leave a truncated archive behind
-            Path(archive).unlink(missing_ok=True)
-
-
-def _run_copy(src: str, dst: str) -> int:
-    try:
-        shutil.copyfile(src, dst)
-    except OSError as err:
-        # Never leave a partially written output (e.g. a firmware image);
-        # SameFileError means dst IS src, where unlinking destroys the input
-        if not isinstance(err, shutil.SameFileError):
-            Path(dst).unlink(missing_ok=True)
-        print(f"copy: {src} -> {dst} failed: {err}", file=sys.stderr)
-        return 1
-    return 0
-
-
-# mode -> (handler, expected operand count); surplus argv means a
-# mis-specified ninja rule and must error, not silently drop operands
-_MODES = {"ar": (_run_ar, 3), "copy": (_run_copy, 2)}
-
-
-def main() -> int:
-    mode = sys.argv[1] if len(sys.argv) > 1 else ""
-    if entry := _MODES.get(mode):
-        handler, argc = entry
-        args = sys.argv[2:]
-        if len(args) != argc:
-            print(
-                f"build_tool {mode}: expected {argc} arguments, got {len(args)}",
-                file=sys.stderr,
-            )
-            return 1
-        return handler(*args)
-    print(f"unknown build_tool mode: {mode}", file=sys.stderr)
-    return 1
-
-
-if __name__ == "__main__":  # pragma: no cover
-    sys.exit(main())

esphome/build_gen/espidf.py

@@ -1,7 +1,6 @@
 """ESP-IDF direct build generator for ESPHome."""
 
 import json
-import logging
 from pathlib import Path
 
 from esphome.components.esp32 import (
@@ -12,7 +11,6 @@ from esphome.components.esp32 import (
 )
 import esphome.config_validation as cv
 from esphome.core import CORE
-from esphome.espidf import variant_to_idf_target
 from esphome.framework_helpers import (
     get_project_compile_flags,
     get_project_cxx_compile_flags,
@@ -20,8 +18,6 @@ from esphome.framework_helpers import (
 )
 from esphome.helpers import mkdir_p, write_file_if_changed
 
-_LOGGER = logging.getLogger(__name__)
-
 # Replaces the IDF default C++ standard (-std=gnu++2b appended to
 # CXX_COMPILE_OPTIONS by project.cmake's __build_init) with the one set via
 # cg.set_cpp_standard(). Emitted between include(project.cmake) and project(),
@@ -35,12 +31,11 @@ idf_build_set_property(CXX_COMPILE_OPTIONS "${{esphome_cxx_compile_options}}")""
 
 
 def get_available_components() -> list[str] | None:
-    """List the built-in ESP-IDF components from ``project_description.json``.
+    """Get list of built-in ESP-IDF components from project_description.json.
 
-    Only components below its ``idf_path/components`` count, which leaves out
-    ``src``, IDF-managed components, converted PIO libs and project local
-    ones such as the Arduino ``component_stubs``. Returns ``None`` if the
-    build dir or ``project_description.json`` isn't ready yet.
+    Excludes ``src``, IDF-managed components (``managed_components/``), and
+    converted PIO libs (``pio_components/``). Returns ``None`` if the build
+    dir or ``project_description.json`` isn't ready yet.
     """
     if CORE.build_path is None:
         return None
@@ -51,24 +46,30 @@ def get_available_components() -> list[str] | None:
     try:
         with project_desc.open(encoding="utf-8") as f:
             data = json.load(f)
-        root = (Path(data["idf_path"]) / "components").resolve()
-        result = [
-            name
-            for name, info in data.get("build_component_info", {}).items()
-            if (comp_dir := info.get("dir"))
-            and Path(comp_dir).resolve().is_relative_to(root)
-        ]
-    except (json.JSONDecodeError, KeyError, OSError) as err:
-        _LOGGER.debug("Could not read %s: %s", project_desc, err)
+
+        component_info = data.get("build_component_info", {})
+
+        result = []
+        for name, info in component_info.items():
+            # Exclude our own src component
+            if name == "src":
+                continue
+
+            # Exclude IDF-managed and converted-PIO components (external).
+            comp_dir = info.get("dir", "")
+            if "managed_components" in comp_dir or "pio_components" in comp_dir:
+                continue
+
+            result.append(name)
+
+        return result
+    except (json.JSONDecodeError, OSError):
         return None
-    if not result:
-        _LOGGER.warning("No ESP-IDF components found under %s", root)
-    return result
 
 
 def has_discovered_components() -> bool:
-    """Check if a previous configure discovered any built-in components."""
-    return bool(get_available_components())
+    """Check if we have discovered components from a previous configure."""
+    return get_available_components() is not None
 
 
 def _cmake_quote(value: str) -> str:
@@ -78,22 +79,19 @@ def _cmake_quote(value: str) -> str:
     return f'"{escaped}"'
 
 
-def get_project_cmakelists(
-    minimal: bool = False, builtin_components: list[str] | None = None
-) -> str:
+def get_project_cmakelists(minimal: bool = False) -> str:
     """Generate the top-level CMakeLists.txt for ESP-IDF project.
 
     When ``minimal`` is true, omit ``ESPHOME_PROJECT_BUILTIN_COMPONENTS``
     since ``project_description.json`` may be stale on the first write.
-    ``builtin_components`` supplies the discovered list (from the cache)
-    instead of reading it from ``project_description.json``.
     """
-    idf_target = variant_to_idf_target(get_esp32_variant())
+    # Get IDF target from ESP32 variant (e.g., ESP32S3 -> esp32s3)
+    variant = get_esp32_variant()
+    idf_target = variant.lower().replace("-", "")
 
-    # esp_idf_size 2.x (IDF >=6.0) made NG the default and removed --ng;
-    # 1.x (IDF 5.5) needs --ng for --format=json2. 1.x json2 also lacks
-    # total_size, hence the ELF fallback in espidf/size_summary.py; both
-    # go away together when 1.x support is dropped.
+    # esp_idf_size 2.x (bundled with IDF >=6.0) made NG the default and
+    # removed the --ng flag; on 1.x (IDF 5.5) --ng is required to get
+    # --format=raw because the legacy mode doesn't support it.
     size_ng_flag = "--ng" if idf_version() < cv.Version(6, 0, 0) else ""
 
     # Project-wide compile options: -D defines and -W warning flags (skip
@@ -164,11 +162,9 @@ def get_project_cmakelists(
         else "\n".join(
             f"idf_build_set_property(ESPHOME_PROJECT_BUILTIN_COMPONENTS {name} APPEND)"
             for name in sorted(
-                set(
-                    builtin_components
-                    if builtin_components is not None
-                    else get_available_components() or []
-                ).difference(CORE.cmake_args.get("EXCLUDE_COMPONENTS", "").split(";"))
+                set(get_available_components() or []).difference(
+                    CORE.cmake_args.get("EXCLUDE_COMPONENTS", "").split(";")
+                )
             )
         )
     )
@@ -212,12 +208,10 @@ include($ENV{{IDF_PATH}}/tools/cmake/project.cmake)
 
 project({CORE.name})
 
-# Emit per-memory-type JSON size data for ESPHome to read post-build.
-# json2 stays small; raw dumps every symbol (~2s on a large map) and
-# this command runs inside the link edge, blocking everything downstream.
+# Emit raw JSON size data for ESPHome to read post-build.
 add_custom_command(
     TARGET ${{CMAKE_PROJECT_NAME}}.elf POST_BUILD
-    COMMAND ${{PYTHON}} -m esp_idf_size {size_ng_flag} --format=json2
+    COMMAND ${{PYTHON}} -m esp_idf_size {size_ng_flag} --format=raw
             -o ${{CMAKE_BINARY_DIR}}/esp_idf_size.json
             ${{CMAKE_PROJECT_NAME}}.map
     WORKING_DIRECTORY ${{CMAKE_BINARY_DIR}}
@@ -285,9 +279,7 @@ target_link_options(${{COMPONENT_LIB}} PUBLIC
 """
 
 
-def write_project(
-    minimal: bool = False, builtin_components: list[str] | None = None
-) -> None:
+def write_project(minimal: bool = False) -> None:
     """Write ESP-IDF project files."""
     mkdir_p(CORE.build_path)
     mkdir_p(CORE.relative_src_path())
@@ -295,7 +287,7 @@ def write_project(
     # Write top-level CMakeLists.txt
     write_file_if_changed(
         CORE.relative_build_path("CMakeLists.txt"),
-        get_project_cmakelists(minimal=minimal, builtin_components=builtin_components),
+        get_project_cmakelists(minimal=minimal),
     )
 
     # Write component CMakeLists.txt in src/

esphome/build_helpers/__init__.py

@@ -1 +0,0 @@
-"""Build helpers shared by the native (non-PlatformIO) toolchains."""

esphome/build_helpers/ccache.py

@@ -1,92 +0,0 @@
-"""Shared ccache policy for build backends: env-knob parsing, binary
-resolution, and default ``CCACHE_*`` values."""
-
-from __future__ import annotations
-
-import logging
-import os
-from pathlib import Path
-
-from esphome.framework_helpers import strip_win_long_path_prefix, tool_version_runs
-from esphome.helpers import FALSY_ENV_STRINGS, TRUTHY_ENV_STRINGS
-
-_LOGGER = logging.getLogger(__name__)
-
-
-def _ccache_runs(ccache: str) -> bool:
-    """Return True when the ``ccache`` found on PATH actually runs."""
-    return tool_version_runs(
-        ccache,
-        "Ignoring ccache at %s because it failed to run; compiling without ccache",
-    )
-
-
-def parse_enable_env(name: str) -> bool | None:
-    """Strictly parse an on/off environment knob; None when unset or invalid.
-
-    ``bool(str)`` truthiness would flip ``no``/``off`` to enabled, so only
-    1/true/yes/on and 0/false/no/off count; anything else warns and reads
-    as unset so the caller's default policy applies.
-    """
-    raw = os.environ.get(name)
-    if raw is None:
-        return None
-    lowered = raw.strip().lower()
-    if not lowered:
-        # ENV KNOB= (Docker/CI) has always read as a disable
-        return False
-    if lowered in TRUTHY_ENV_STRINGS:
-        return True
-    if lowered in FALSY_ENV_STRINGS:
-        return False
-    _LOGGER.warning("Ignoring unrecognized %s=%r; use 1 or 0", name, raw)
-    return None
-
-
-def resolve_ccache_path() -> str | None:
-    """The ccache binary to wrap compiles with, or None when disabled.
-
-    An explicit ``ESPHOME_CCACHE_ENABLE=1`` skips the runnability probe; the
-    Windows extended-length prefix is stripped before probing (#18399).
-    """
-    import shutil
-
-    explicit = parse_enable_env("ESPHOME_CCACHE_ENABLE")
-    if explicit is False:
-        return None
-    ccache = shutil.which("ccache")
-    if ccache is None:
-        if explicit:
-            _LOGGER.warning(
-                "ESPHOME_CCACHE_ENABLE is set but no ccache binary is on PATH; "
-                "compiling without ccache"
-            )
-        return None
-    ccache = strip_win_long_path_prefix(ccache)
-    if not explicit and not _ccache_runs(ccache):
-        return None
-    return ccache
-
-
-def ccache_defaults_env(cache_dir: Path) -> dict[str, str]:
-    """Default ``CCACHE_*`` values for a build subprocess (not os.environ).
-
-    Values the user already set in the environment are respected. Depend
-    mode is on: both native backends emit depfiles (-MMD / CMake), which
-    keeps cache-miss overhead low.
-    """
-    from esphome.core import CORE
-
-    # An unset build_path means the env was built before preload; fail loudly
-    # rather than silently drop CCACHE_BASEDIR.
-    if CORE.build_path is None:
-        raise ValueError(
-            "CORE.build_path must be set before constructing the build environment"
-        )
-    defaults = {
-        "CCACHE_DIR": str(cache_dir),
-        "CCACHE_NOHASHDIR": "true",
-        "CCACHE_DEPEND": "1",
-        "CCACHE_BASEDIR": str(Path(CORE.build_path).resolve()),
-    }
-    return {k: v for k, v in defaults.items() if k not in os.environ}

esphome/build_helpers/ninja.py

@@ -1,92 +0,0 @@
-"""Platform-neutral helpers for ninja-driven native builds."""
-
-from __future__ import annotations
-
-import logging
-import os
-from pathlib import Path
-import re
-import shutil
-
-from esphome.core import EsphomeError
-from esphome.framework_helpers import strip_win_long_path_prefix, tool_version_runs
-
-_LOGGER = logging.getLogger(__name__)
-
-
-def _ninja_runs(binary: str) -> bool:
-    """Whether the ninja found on PATH actually runs (see tool_version_runs)."""
-    return tool_version_runs(
-        binary,
-        "Ignoring ninja at %s because it failed to run; "
-        "falling back to the bundled wheel",
-    )
-
-
-def find_ninja() -> Path:
-    """Locate the ninja binary: a runnable PATH hit first, else the ninja
-    PyPI wheel."""
-    if binary := shutil.which("ninja"):
-        binary = strip_win_long_path_prefix(binary)
-        if _ninja_runs(binary):
-            return Path(binary)
-    import_error: ImportError | None = None
-    try:
-        import ninja
-    except ImportError as err:
-        import_error = err
-        wheel_binary = None
-    else:
-        wheel_binary = Path(ninja.BIN_DIR) / (
-            "ninja.exe" if os.name == "nt" else "ninja"
-        )
-    if wheel_binary is None or not wheel_binary.is_file():
-        raise EsphomeError(
-            "ninja not found on PATH or in the ninja package; reinstall the "
-            "esphome Python environment"
-        ) from import_error
-    return wheel_binary
-
-
-def escape(value: Path | str) -> str:
-    """Escape a path or token for a ninja file."""
-    return str(value).replace("$", "$$").replace(":", "$:").replace(" ", "$ ")
-
-
-def quote_arg(tok: str) -> str:
-    """Quote with the CreateProcess argv rule (as ``subprocess.list2cmdline``):
-    backslash runs double only before a quote. Windows-only; ``$`` must
-    already be doubled for ninja.
-    """
-    quoted = re.sub(r'(\\*)"', lambda m: m.group(1) * 2 + '\\"', tok)
-    quoted = re.sub(r"(\\+)\Z", lambda m: m.group(1) * 2, quoted)
-    return f'"{quoted}"'
-
-
-# Force-quote any token containing a character outside the shlex.quote-style
-# safe set: ninja hands POSIX commands to /bin/sh -c, so bare (, ;, <, *, `
-# and friends would be re-parsed as shell syntax.
-_NEEDS_QUOTE = re.compile(r"[^\w@%+=:,./-]")
-
-
-def shell_token(tok: str, force: bool = False) -> str:
-    """Re-quote a lexed token for the platform shell; ``force`` always quotes.
-
-    Single quotes on POSIX (/bin/sh), the argv rule on Windows
-    (CreateProcess). ``$`` is doubled first because ninja expands it before
-    the command reaches the shell.
-    """
-    tok = tok.replace("$", "$$")  # ninja would expand a bare $ to nothing
-    if not (force or not tok or _NEEDS_QUOTE.search(tok)):
-        return tok
-    # An empty token must become '' / "" or it vanishes from the argv
-    if os.name == "nt":
-        return quote_arg(tok)
-    # shlex.quote's rule; inlined because the $-doubled token must not be
-    # re-examined for safe characters
-    return "'" + tok.replace("'", "'\"'\"'") + "'"
-
-
-def quote_path(value: Path | str) -> str:
-    """Force-quote a path for the ninja command line (shell/CreateProcess)."""
-    return shell_token(str(value), force=True)

esphome/build_helpers/size_summary.py

@@ -1,24 +0,0 @@
-"""The PlatformIO-format size bar shared by the native toolchains."""
-
-from __future__ import annotations
-
-
-def format_bar(used: int, total: int) -> str:
-    """Match PlatformIO's ``_format_availale_bytes`` (sic, pioupload.py) exactly."""
-    pct_raw = used / total if total else 0
-    blocks = 10
-    filled = min(int(round(blocks * pct_raw)), blocks)
-    progress = "=" * filled
-    return (
-        f"[{progress:<{blocks}}] {pct_raw: 6.1%} "
-        f"(used {used:d} bytes from {total:d} bytes)"
-    )
-
-
-def print_size_line(label: str, used: int, total: int) -> None:
-    """One PlatformIO-format summary line (``RAM``/``Flash``).
-
-    The label padding is part of the format: ``script/ci_memory_impact_extract.py``
-    matches these lines verbatim.
-    """
-    print(f"{label + ':':<7}{format_bar(used, total)}")

esphome/build_helpers/tools_cache.py

@@ -1,36 +0,0 @@
-"""Machine-global tools cache location shared by the native backends."""
-
-from __future__ import annotations
-
-from pathlib import Path
-
-
-def tools_cache_path(env_var: str, subdir: str) -> Path:
-    """A backend's machine-global tools directory, with an env override.
-
-    A blank/whitespace override is treated as unset: ``Path("")`` resolves
-    to the CWD, which ``clean-all`` would then delete.
-    """
-    import platformdirs
-
-    from esphome.helpers import get_str_env
-
-    if prefix := get_str_env(env_var, "").strip():
-        # resolve(): symlinked prefixes otherwise trip idf.py's
-        # venv-mismatch warning on every build
-        return Path(prefix).expanduser().resolve()
-    # appauthor=False keeps the Windows path short (no vendor segment);
-    # deep IDF trees run into MAX_PATH otherwise
-    return (
-        Path(platformdirs.user_cache_dir("esphome", appauthor=False)) / subdir
-    ).resolve()
-
-
-# (env override, cache subdir) per native backend. writer.clean_all wipes
-# every entry via tools_cache_path, so listing a cache here is the single
-# step that registers it for removal; the backends' own path getters use
-# the same named pairs so the two cannot drift.
-IDF_TOOLS_CACHE = ("ESPHOME_ESP_IDF_PREFIX", "idf")
-SDK_NRF_TOOLS_CACHE = ("ESPHOME_SDK_NRF_PREFIX", "sdk-nrf")
-ARDUINO8266_TOOLS_CACHE = ("ESPHOME_ARDUINO8266_PREFIX", "arduino8266")
-TOOLS_CACHE_SPECS = (IDF_TOOLS_CACHE, SDK_NRF_TOOLS_CACHE, ARDUINO8266_TOOLS_CACHE)

esphome/codegen.py

@@ -78,7 +78,6 @@ from esphome.cpp_types import (  # noqa: F401
     StringRef,
     arduino_json_ns,
     bool_,
-    char,
     const_char_ptr,
     double,
     esphome_ns,

esphome/compiled_config.py

@@ -100,21 +100,6 @@ def _refresh_sidecar() -> bool:
             )
             return False
         if old is not None and old.can_apply_to_core():
-            if (
-                old.toolchain is not None
-                and CORE.toolchain is not None
-                and old.toolchain != CORE.toolchain.value
-            ):
-                # Platforms normalize toolchain-sensitive keys differently;
-                # never cache a config validated under a different toolchain
-                # than the compile's
-                _LOGGER.debug(
-                    "Not caching: config validated with toolchain %r but the "
-                    "last compile used %r",
-                    CORE.toolchain.value,
-                    old.toolchain,
-                )
-                return False
             # Compile-written; nothing to refresh.
             return True
         if CORE.build_path is not None and CORE.build_path.exists():

esphome/component_aliases.py

@@ -6,6 +6,5 @@ See the component-alias section of esphome/loader.py.
 
 # alias -> (canonical component, removal version or None)
 COMPONENT_ALIASES: dict[str, tuple[str, str | None]] = {
-    "esp32_improv": ("improv_ble", "2027.4.0"),
     "rp2040": ("rp2", "2027.7.0"),
 }

esphome/components/adc/__init__.py

@@ -13,7 +13,6 @@ from esphome.components.esp32 import (
     VARIANT_ESP32P4,
     VARIANT_ESP32S2,
     VARIANT_ESP32S3,
-    VARIANT_ESP32S31,
     get_esp32_variant,
 )
 import esphome.config_validation as cv
@@ -157,17 +156,6 @@ ESP32_VARIANT_ADC1_PIN_TO_CHANNEL = {
         9: adc_channel_t.ADC_CHANNEL_8,
         10: adc_channel_t.ADC_CHANNEL_9,
     },
-    # https://github.com/espressif/esp-idf/blob/master/components/soc/esp32s31/include/soc/adc_channel.h
-    VARIANT_ESP32S31: {
-        42: adc_channel_t.ADC_CHANNEL_0,
-        43: adc_channel_t.ADC_CHANNEL_1,
-        44: adc_channel_t.ADC_CHANNEL_2,
-        45: adc_channel_t.ADC_CHANNEL_3,
-        46: adc_channel_t.ADC_CHANNEL_4,
-        47: adc_channel_t.ADC_CHANNEL_5,
-        48: adc_channel_t.ADC_CHANNEL_6,
-        49: adc_channel_t.ADC_CHANNEL_7,
-    },
 }
 
 # pin to adc2 channel mapping
@@ -237,17 +225,6 @@ ESP32_VARIANT_ADC2_PIN_TO_CHANNEL = {
         19: adc_channel_t.ADC_CHANNEL_8,
         20: adc_channel_t.ADC_CHANNEL_9,
     },
-    # https://github.com/espressif/esp-idf/blob/master/components/soc/esp32s31/include/soc/adc_channel.h
-    VARIANT_ESP32S31: {
-        50: adc_channel_t.ADC_CHANNEL_0,
-        51: adc_channel_t.ADC_CHANNEL_1,
-        52: adc_channel_t.ADC_CHANNEL_2,
-        53: adc_channel_t.ADC_CHANNEL_3,
-        54: adc_channel_t.ADC_CHANNEL_4,
-        55: adc_channel_t.ADC_CHANNEL_5,
-        56: adc_channel_t.ADC_CHANNEL_6,
-        57: adc_channel_t.ADC_CHANNEL_7,
-    },
 }
 
 

esphome/components/adc/adc_sensor.h

@@ -94,7 +94,7 @@ class ADCSensor final : public sensor::Sensor, public PollingComponent, public v
   ///   - SamplingMode::MIN: Use the lowest sample value
   ///   - SamplingMode::MAX: Use the highest sample value
   /// @param sampling_mode The desired sampling mode to use for aggregating ADC samples.
-  void set_sampling_mode(SamplingMode sampling_mode) { this->sampling_mode_ = sampling_mode; }
+  void set_sampling_mode(SamplingMode sampling_mode);
 
   /// Perform a single ADC sampling operation and return the measured value.
   /// This function handles raw readings, calibration, and averaging as needed.

esphome/components/adc/adc_sensor_common.cpp

@@ -76,4 +76,6 @@ void ADCSensor::set_sample_count(uint8_t sample_count) {
   }
 }
 
+void ADCSensor::set_sampling_mode(SamplingMode sampling_mode) { this->sampling_mode_ = sampling_mode; }
+
 }  // namespace esphome::adc

esphome/components/adc/adc_sensor_esp32.cpp

@@ -74,7 +74,9 @@ void ADCSensor::setup() {
   if (this->calibration_handle_ == nullptr) {
     adc_cali_handle_t handle = nullptr;
 
-#if defined(ADC_CALI_SCHEME_CURVE_FITTING_SUPPORTED)
+#if USE_ESP32_VARIANT_ESP32C3 || USE_ESP32_VARIANT_ESP32C5 || USE_ESP32_VARIANT_ESP32C6 || \
+    USE_ESP32_VARIANT_ESP32C61 || USE_ESP32_VARIANT_ESP32H2 || USE_ESP32_VARIANT_ESP32P4 || USE_ESP32_VARIANT_ESP32S3
+    // RISC-V variants (except C2) and S3 use curve fitting calibration
     adc_cali_curve_fitting_config_t cali_config = {};  // Zero initialize first
 #if ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(5, 3, 0)
     cali_config.chan = this->channel_;
@@ -92,7 +94,7 @@ void ADCSensor::setup() {
       ESP_LOGW(TAG, "Curve fitting calibration failed with error %d, will use uncalibrated readings", err);
       this->setup_flags_.calibration_complete = false;
     }
-#elif defined(ADC_CALI_SCHEME_LINE_FITTING_SUPPORTED)
+#else  // ESP32, ESP32-S2, and ESP32-C2 use line fitting calibration
     adc_cali_line_fitting_config_t cali_config = {
       .unit_id = this->adc_unit_,
       .atten = this->attenuation_,
@@ -110,11 +112,7 @@ void ADCSensor::setup() {
       ESP_LOGW(TAG, "Line fitting calibration failed with error %d, will use uncalibrated readings", err);
       this->setup_flags_.calibration_complete = false;
     }
-#else   // No calibration scheme available
-    (void) handle;
-    ESP_LOGD(TAG, "No calibration scheme for this variant, readings are uncalibrated");
-    this->setup_flags_.calibration_complete = false;
-#endif
+#endif  // ESP32C3 || ESP32C5 || ESP32C6 || ESP32C61 || ESP32H2 || ESP32P4 || ESP32S3
   }
 
   this->setup_flags_.init_complete = true;
@@ -123,28 +121,23 @@ void ADCSensor::setup() {
 void ADCSensor::dump_config() {
   LOG_SENSOR("", "ADC Sensor", this);
   LOG_PIN("  Pin: ", this->pin_);
-#if defined(ADC_CALI_SCHEME_CURVE_FITTING_SUPPORTED) || defined(ADC_CALI_SCHEME_LINE_FITTING_SUPPORTED)
-  const char *calibration_status = this->setup_flags_.calibration_complete ? "OK" : "FAILED";
-#else
-  const char *calibration_status = "N/A";  // This variant has no calibration scheme
-#endif
-  ESP_LOGCONFIG(TAG,
-                "  Channel:       %d\n"
-                "  Unit:          %s\n"
-                "  Attenuation:   %s\n"
-                "  Samples:       %i\n"
-                "  Sampling mode: %s\n"
-                "  Setup Status:\n"
-                "    Handle Init:  %s\n"
-                "    Config:       %s\n"
-                "    Calibration:  %s\n"
-                "    Overall Init: %s",
-                this->channel_, LOG_STR_ARG(adc_unit_to_str(this->adc_unit_)),
-                this->autorange_ ? "Auto" : LOG_STR_ARG(attenuation_to_str(this->attenuation_)), this->sample_count_,
-                LOG_STR_ARG(sampling_mode_to_str(this->sampling_mode_)),
-                this->setup_flags_.handle_init_complete ? "OK" : "FAILED",
-                this->setup_flags_.config_complete ? "OK" : "FAILED", calibration_status,
-                this->setup_flags_.init_complete ? "OK" : "FAILED");
+  ESP_LOGCONFIG(
+      TAG,
+      "  Channel:       %d\n"
+      "  Unit:          %s\n"
+      "  Attenuation:   %s\n"
+      "  Samples:       %i\n"
+      "  Sampling mode: %s\n"
+      "  Setup Status:\n"
+      "    Handle Init:  %s\n"
+      "    Config:       %s\n"
+      "    Calibration:  %s\n"
+      "    Overall Init: %s",
+      this->channel_, LOG_STR_ARG(adc_unit_to_str(this->adc_unit_)),
+      this->autorange_ ? "Auto" : LOG_STR_ARG(attenuation_to_str(this->attenuation_)), this->sample_count_,
+      LOG_STR_ARG(sampling_mode_to_str(this->sampling_mode_)),
+      this->setup_flags_.handle_init_complete ? "OK" : "FAILED", this->setup_flags_.config_complete ? "OK" : "FAILED",
+      this->setup_flags_.calibration_complete ? "OK" : "FAILED", this->setup_flags_.init_complete ? "OK" : "FAILED");
 
   LOG_UPDATE_INTERVAL(this);
 }
@@ -191,11 +184,12 @@ float ADCSensor::sample_fixed_attenuation_() {
     } else {
       ESP_LOGW(TAG, "ADC calibration conversion failed with error %d, disabling calibration", err);
       if (this->calibration_handle_ != nullptr) {
-#if defined(ADC_CALI_SCHEME_CURVE_FITTING_SUPPORTED)
+#if USE_ESP32_VARIANT_ESP32C3 || USE_ESP32_VARIANT_ESP32C5 || USE_ESP32_VARIANT_ESP32C6 || \
+    USE_ESP32_VARIANT_ESP32C61 || USE_ESP32_VARIANT_ESP32H2 || USE_ESP32_VARIANT_ESP32P4 || USE_ESP32_VARIANT_ESP32S3
         adc_cali_delete_scheme_curve_fitting(this->calibration_handle_);
-#elif defined(ADC_CALI_SCHEME_LINE_FITTING_SUPPORTED)
+#else   // Other ESP32 variants use line fitting calibration
         adc_cali_delete_scheme_line_fitting(this->calibration_handle_);
-#endif
+#endif  // ESP32C3 || ESP32C5 || ESP32C6 || ESP32C61 || ESP32H2 || ESP32P4 || ESP32S3
         this->calibration_handle_ = nullptr;
       }
     }
@@ -223,9 +217,10 @@ float ADCSensor::sample_autorange_() {
     // Need to recalibrate for the new attenuation
     if (this->calibration_handle_ != nullptr) {
       // Delete old calibration handle
-#if defined(ADC_CALI_SCHEME_CURVE_FITTING_SUPPORTED)
+#if USE_ESP32_VARIANT_ESP32C3 || USE_ESP32_VARIANT_ESP32C5 || USE_ESP32_VARIANT_ESP32C6 || \
+    USE_ESP32_VARIANT_ESP32C61 || USE_ESP32_VARIANT_ESP32H2 || USE_ESP32_VARIANT_ESP32P4 || USE_ESP32_VARIANT_ESP32S3
       adc_cali_delete_scheme_curve_fitting(this->calibration_handle_);
-#elif defined(ADC_CALI_SCHEME_LINE_FITTING_SUPPORTED)
+#else
       adc_cali_delete_scheme_line_fitting(this->calibration_handle_);
 #endif
       this->calibration_handle_ = nullptr;
@@ -234,7 +229,8 @@ float ADCSensor::sample_autorange_() {
     // Create new calibration handle for this attenuation
     adc_cali_handle_t handle = nullptr;
 
-#if defined(ADC_CALI_SCHEME_CURVE_FITTING_SUPPORTED)
+#if USE_ESP32_VARIANT_ESP32C3 || USE_ESP32_VARIANT_ESP32C5 || USE_ESP32_VARIANT_ESP32C6 || \
+    USE_ESP32_VARIANT_ESP32C61 || USE_ESP32_VARIANT_ESP32H2 || USE_ESP32_VARIANT_ESP32P4 || USE_ESP32_VARIANT_ESP32S3
     adc_cali_curve_fitting_config_t cali_config = {};
 #if ESP_IDF_VERSION >= ESP_IDF_VERSION_VAL(5, 3, 0)
     cali_config.chan = this->channel_;
@@ -246,7 +242,7 @@ float ADCSensor::sample_autorange_() {
     err = adc_cali_create_scheme_curve_fitting(&cali_config, &handle);
     ESP_LOGVV(TAG, "Autorange atten=%d: Calibration handle creation %s (err=%d)", atten,
               (err == ESP_OK) ? "SUCCESS" : "FAILED", err);
-#elif defined(ADC_CALI_SCHEME_LINE_FITTING_SUPPORTED)
+#else
     adc_cali_line_fitting_config_t cali_config = {
       .unit_id = this->adc_unit_,
       .atten = atten,
@@ -268,9 +264,10 @@ float ADCSensor::sample_autorange_() {
     if (err != ESP_OK) {
       ESP_LOGW(TAG, "ADC read failed in autorange with error %d", err);
       if (handle != nullptr) {
-#if defined(ADC_CALI_SCHEME_CURVE_FITTING_SUPPORTED)
+#if USE_ESP32_VARIANT_ESP32C3 || USE_ESP32_VARIANT_ESP32C5 || USE_ESP32_VARIANT_ESP32C6 || \
+    USE_ESP32_VARIANT_ESP32C61 || USE_ESP32_VARIANT_ESP32H2 || USE_ESP32_VARIANT_ESP32P4 || USE_ESP32_VARIANT_ESP32S3
         adc_cali_delete_scheme_curve_fitting(handle);
-#elif defined(ADC_CALI_SCHEME_LINE_FITTING_SUPPORTED)
+#else
         adc_cali_delete_scheme_line_fitting(handle);
 #endif
       }
@@ -289,9 +286,10 @@ float ADCSensor::sample_autorange_() {
         ESP_LOGVV(TAG, "Autorange atten=%d: UNCALIBRATED FALLBACK - raw=%d -> %.6fV (3.3V ref)", atten, raw, voltage);
       }
       // Clean up calibration handle
-#if defined(ADC_CALI_SCHEME_CURVE_FITTING_SUPPORTED)
+#if USE_ESP32_VARIANT_ESP32C3 || USE_ESP32_VARIANT_ESP32C5 || USE_ESP32_VARIANT_ESP32C6 || \
+    USE_ESP32_VARIANT_ESP32C61 || USE_ESP32_VARIANT_ESP32H2 || USE_ESP32_VARIANT_ESP32P4 || USE_ESP32_VARIANT_ESP32S3
       adc_cali_delete_scheme_curve_fitting(handle);
-#elif defined(ADC_CALI_SCHEME_LINE_FITTING_SUPPORTED)
+#else
       adc_cali_delete_scheme_line_fitting(handle);
 #endif
     } else {

esphome/components/adc/sensor.py

@@ -3,7 +3,6 @@ import logging
 import esphome.codegen as cg
 from esphome.components import sensor, voltage_sampler
 from esphome.components.esp32 import (
-    VARIANT_ESP32S31,
     get_esp32_variant,
     include_builtin_idf_component,
     require_adc_oneshot_iram,
@@ -57,14 +56,6 @@ def validate_config(config: ConfigType) -> ConfigType:
     if config[CONF_RAW] and config.get(CONF_ATTENUATION, None) == "auto":
         raise cv.Invalid("Automatic attenuation cannot be used when raw output is set")
 
-    # The S31 ADC supports a single attenuation level (SOC_ADC_ATTEN_NUM is 1)
-    if (
-        CORE.is_esp32
-        and get_esp32_variant() == VARIANT_ESP32S31
-        and config.get(CONF_ATTENUATION, "0db") != "0db"
-    ):
-        raise cv.Invalid("ESP32-S31 only supports 'attenuation: 0db'")
-
     if config.get(CONF_ATTENUATION, None) == "auto" and config.get(CONF_SAMPLES, 1) > 1:
         raise cv.Invalid(
             "Automatic attenuation cannot be used when multisampling is set"

esphome/components/alarm_control_panel/alarm_control_panel.h

@@ -138,11 +138,11 @@ class AlarmControlPanel : public EntityBase {
   // in order to store last panel state in flash
   ESPPreferenceObject pref_;
   // current state
-  AlarmControlPanelState current_state_{ACP_STATE_DISARMED};
+  AlarmControlPanelState current_state_;
   // the desired (or previous) state
-  AlarmControlPanelState desired_state_{ACP_STATE_DISARMED};
+  AlarmControlPanelState desired_state_;
   // last time the state was updated
-  uint32_t last_update_{0};
+  uint32_t last_update_;
   // the call control function
   virtual void control(const AlarmControlPanelCall &call) = 0;
   // state callback - passes the new state to listeners

esphome/components/alpha3/alpha3.cpp

@@ -162,9 +162,8 @@ void Alpha3::send_request_(uint8_t *request, size_t len) {
   auto status =
       esp_ble_gattc_write_char(this->parent_->get_gattc_if(), this->parent_->get_conn_id(), this->geni_handle_, len,
                                request, ESP_GATT_WRITE_TYPE_NO_RSP, ESP_GATT_AUTH_REQ_NONE);
-  if (status) {
+  if (status)
     ESP_LOGW(TAG, "[%s] esp_ble_gattc_write_char failed, status=%d", this->parent_->address_str(), status);
-  }
 }
 
 void Alpha3::update() {

esphome/components/anova/anova.cpp

@@ -13,7 +13,7 @@ void Anova::dump_config() { LOG_CLIMATE("", "Anova BLE Cooker", this); }
 
 void Anova::setup() {
   this->codec_ = make_unique<AnovaCodec>();
-  this->poll_step_ = PollStep::IDLE;
+  this->current_request_ = 0;
 }
 
 void Anova::loop() {
@@ -22,15 +22,6 @@ void Anova::loop() {
   this->disable_loop();
 }
 
-void Anova::write_request_(AnovaPacket *pkt) {
-  auto status =
-      esp_ble_gattc_write_char(this->parent_->get_gattc_if(), this->parent_->get_conn_id(), this->char_handle_,
-                               pkt->length, pkt->data, ESP_GATT_WRITE_TYPE_NO_RSP, ESP_GATT_AUTH_REQ_NONE);
-  if (status) {
-    ESP_LOGW(TAG, "[%s] esp_ble_gattc_write_char failed, status=%d", this->parent_->address_str(), status);
-  }
-}
-
 void Anova::control(const ClimateCall &call) {
   auto mode_val = call.get_mode();
   if (mode_val.has_value()) {
@@ -47,11 +38,22 @@ void Anova::control(const ClimateCall &call) {
         ESP_LOGW(TAG, "Unsupported mode: %d", mode);
         return;
     }
-    this->write_request_(pkt);
+    auto status =
+        esp_ble_gattc_write_char(this->parent_->get_gattc_if(), this->parent_->get_conn_id(), this->char_handle_,
+                                 pkt->length, pkt->data, ESP_GATT_WRITE_TYPE_NO_RSP, ESP_GATT_AUTH_REQ_NONE);
+    if (status) {
+      ESP_LOGW(TAG, "[%s] esp_ble_gattc_write_char failed, status=%d", this->parent_->address_str(), status);
+    }
   }
   auto target_temp = call.get_target_temperature();
   if (target_temp.has_value()) {
-    this->write_request_(this->codec_->get_set_target_temp_request(*target_temp));
+    auto *pkt = this->codec_->get_set_target_temp_request(*target_temp);
+    auto status =
+        esp_ble_gattc_write_char(this->parent_->get_gattc_if(), this->parent_->get_conn_id(), this->char_handle_,
+                                 pkt->length, pkt->data, ESP_GATT_WRITE_TYPE_NO_RSP, ESP_GATT_AUTH_REQ_NONE);
+    if (status) {
+      ESP_LOGW(TAG, "[%s] esp_ble_gattc_write_char failed, status=%d", this->parent_->address_str(), status);
+    }
   }
 }
 
@@ -60,7 +62,6 @@ void Anova::gattc_event_handler(esp_gattc_cb_event_t event, esp_gatt_if_t gattc_
     case ESP_GATTC_DISCONNECT_EVT: {
       this->current_temperature = NAN;
       this->target_temperature = NAN;
-      this->poll_step_ = PollStep::IDLE;
       this->publish_state();
       break;
     }
@@ -82,8 +83,8 @@ void Anova::gattc_event_handler(esp_gattc_cb_event_t event, esp_gatt_if_t gattc_
     }
     case ESP_GATTC_REG_FOR_NOTIFY_EVT: {
       this->node_state = espbt::ClientState::ESTABLISHED;
-      this->poll_step_ = PollStep::IDLE;
-      this->update();  // begin the first poll cycle immediately
+      this->current_request_ = 0;
+      this->update();
       break;
     }
     case ESP_GATTC_NOTIFY_EVT: {
@@ -100,30 +101,33 @@ void Anova::gattc_event_handler(esp_gattc_cb_event_t event, esp_gatt_if_t gattc_
         this->mode = this->codec_->running_ ? climate::CLIMATE_MODE_HEAT : climate::CLIMATE_MODE_OFF;
       }
       if (this->codec_->has_unit()) {
-        ESP_LOGD(TAG, "Anova units is %s", (this->codec_->unit_ == 'f') ? "fahrenheit" : "celsius");
+        this->fahrenheit_ = (this->codec_->unit_ == 'f');
+        ESP_LOGD(TAG, "Anova units is %s", this->fahrenheit_ ? "fahrenheit" : "celsius");
+        this->current_request_++;
       }
       this->publish_state();
 
-      // Advance the poll cycle to its next request based on the reply we got.
-      switch (this->poll_step_) {
-        case PollStep::SET_UNIT:
-          this->poll_step_ = PollStep::STATUS;
-          this->write_request_(this->codec_->get_read_device_status_request());
-          break;
-        case PollStep::STATUS:
-          this->poll_step_ = PollStep::TARGET;
-          this->write_request_(this->codec_->get_read_target_temp_request());
-          break;
-        case PollStep::TARGET:
-          this->poll_step_ = PollStep::CURRENT;
-          this->write_request_(this->codec_->get_read_current_temp_request());
-          break;
-        case PollStep::CURRENT:
-          this->poll_step_ = PollStep::IDLE;  // full cycle complete
-          break;
-        default:
-          // A reply to an ad-hoc control() write, outside a managed cycle.
-          break;
+      if (this->current_request_ > 1) {
+        AnovaPacket *pkt = nullptr;
+        switch (this->current_request_++) {
+          case 2:
+            pkt = this->codec_->get_read_target_temp_request();
+            break;
+          case 3:
+            pkt = this->codec_->get_read_current_temp_request();
+            break;
+          default:
+            this->current_request_ = 1;
+            break;
+        }
+        if (pkt != nullptr) {
+          auto status =
+              esp_ble_gattc_write_char(this->parent_->get_gattc_if(), this->parent_->get_conn_id(), this->char_handle_,
+                                       pkt->length, pkt->data, ESP_GATT_WRITE_TYPE_NO_RSP, ESP_GATT_AUTH_REQ_NONE);
+          if (status) {
+            ESP_LOGW(TAG, "[%s] esp_ble_gattc_write_char failed, status=%d", this->parent_->address_str(), status);
+          }
+        }
       }
       break;
     }
@@ -132,26 +136,27 @@ void Anova::gattc_event_handler(esp_gattc_cb_event_t event, esp_gatt_if_t gattc_
   }
 }
 
-void Anova::set_unit_of_measurement(const char *unit) { this->want_fahrenheit_ = !strncmp(unit, "f", 1); }
+void Anova::set_unit_of_measurement(const char *unit) { this->fahrenheit_ = !strncmp(unit, "f", 1); }
 
 void Anova::update() {
   if (this->node_state != espbt::ClientState::ESTABLISHED)
     return;
-  if (this->poll_step_ != PollStep::IDLE) {
-    // The previous cycle never finished within a full polling interval -- a
-    // reply was missed or a write failed. Restart the cycle rather than stall;
-    // the polling interval itself acts as the timeout. A late reply from the
-    // abandoned cycle is harmless: state decoding happens on every notify
-    // regardless of step, and each notify sends at most one follow-up request.
-    ESP_LOGW(TAG, "[%s] Poll cycle incomplete (step %u); restarting cycle", this->parent_->address_str(),
-             static_cast<uint8_t>(this->poll_step_));
+
+  if (this->current_request_ < 2) {
+    AnovaPacket *pkt;
+    if (this->current_request_ == 0) {
+      pkt = this->codec_->get_set_unit_request(this->fahrenheit_ ? 'f' : 'c');
+    } else {
+      pkt = this->codec_->get_read_device_status_request();
+    }
+    auto status =
+        esp_ble_gattc_write_char(this->parent_->get_gattc_if(), this->parent_->get_conn_id(), this->char_handle_,
+                                 pkt->length, pkt->data, ESP_GATT_WRITE_TYPE_NO_RSP, ESP_GATT_AUTH_REQ_NONE);
+    if (status) {
+      ESP_LOGW(TAG, "[%s] esp_ble_gattc_write_char failed, status=%d", this->parent_->address_str(), status);
+    }
+    this->current_request_++;
   }
-  // Re-assert the configured unit at the start of every poll cycle, then fall
-  // through the status/temperature reads via the notification handler. Always
-  // command the configured unit (want_fahrenheit_) -- never the last value the
-  // device reported, or a drift to 'c' would lock itself in.
-  this->poll_step_ = PollStep::SET_UNIT;
-  this->write_request_(this->codec_->get_set_unit_request(this->want_fahrenheit_ ? 'f' : 'c'));
 }
 
 }  // namespace esphome::anova

esphome/components/anova/anova.h

@@ -37,20 +37,11 @@ class Anova final : public climate::Climate, public esphome::ble_client::BLEClie
   void set_unit_of_measurement(const char *unit);
 
  protected:
-  // A poll cycle re-asserts the configured unit, then reads device state.
-  // Re-asserting every cycle prevents the cooker from silently reverting to
-  // its default (Celsius); previously the unit was only set once on
-  // connection, so a drift persisted (and corrupted the F/C interpretation of
-  // subsequent readings) until the BLE link was re-established.
-  enum class PollStep : uint8_t { SET_UNIT, STATUS, TARGET, CURRENT, IDLE };
-
-  void write_request_(AnovaPacket *pkt);
-
   std::unique_ptr<AnovaCodec> codec_;
   void control(const climate::ClimateCall &call) override;
   uint16_t char_handle_;
-  bool want_fahrenheit_{true};  // configured target unit; never overwritten by device replies
-  PollStep poll_step_{PollStep::IDLE};
+  uint8_t current_request_;
+  bool fahrenheit_;
 };
 
 }  // namespace esphome::anova

esphome/components/api/__init__.py

@@ -1,11 +1,9 @@
 import logging
-import re
 from typing import Any
 
 from esphome import automation
 from esphome.automation import Condition
 import esphome.codegen as cg
-from esphome.components.const import CONF_DESCRIPTION
 from esphome.components.logger import request_log_listener
 
 # ENCRYPTION_SCHEMA and validate_encryption_key are re-exported for external
@@ -14,7 +12,6 @@ from esphome.components.noise import (  # noqa: F401
     ENCRYPTION_SCHEMA,
     decode_encryption_key,
     encryption_schema,
-    new_psk_progmem,
     validate_encryption_key,
 )
 from esphome.config_helpers import filter_source_files_from_defines, get_logger_level
@@ -43,12 +40,10 @@ from esphome.const import (
     CONF_TAG,
     CONF_THEN,
     CONF_TRIGGER_ID,
-    CONF_TYPE,
     CONF_VARIABLES,
 )
 from esphome.core import CORE, ID, CoroPriority, EsphomeError, coroutine_with_priority
 from esphome.cpp_generator import MockObj, TemplateArgsType
-from esphome.helpers import fnv1_hash
 from esphome.types import ConfigFragmentType, ConfigType
 
 # Compat alias: downstream consumers (e.g. device-builder) referenced the
@@ -129,19 +124,12 @@ SERVICE_ARG_FALLBACK_TYPES: dict[str, MockObj] = {
 }
 CONF_BATCH_DELAY = "batch_delay"
 CONF_CUSTOM_SERVICES = "custom_services"
-CONF_EXAMPLE = "example"
 CONF_HOMEASSISTANT_SERVICES = "homeassistant_services"
 CONF_HOMEASSISTANT_STATES = "homeassistant_states"
 CONF_LISTEN_BACKLOG = "listen_backlog"
 CONF_MAX_SEND_QUEUE = "max_send_queue"
 CONF_STATE_SUBSCRIPTION_ONLY = "state_subscription_only"
 
-# Schema defaults that also match the C++ initializers in api_server.h; codegen
-# skips the setter when the config equals them.
-DEFAULT_PORT = 6053
-DEFAULT_REBOOT_TIMEOUT = "15min"
-DEFAULT_BATCH_DELAY = "100ms"
-
 
 def _register_provisioning_source(config: ConfigType) -> ConfigType:
     """Register the API as a provisioning source when encryption is enabled.
@@ -239,30 +227,14 @@ def _validate_supports_response(value: Any) -> str:
     return cv.enum(SUPPORTS_RESPONSE_OPTIONS, lower=True)(value)
 
 
-# ESP8266 copies every string of an action into a stack buffer sized by codegen; keep it small
-ESP8266_ACTION_STRINGS_MAX_TOTAL = 384
-
-VARIABLE_SCHEMA = cv.Schema(
-    {
-        cv.Required(CONF_TYPE): cv.one_of(*SERVICE_ARG_NATIVE_TYPES, lower=True),
-        cv.Optional(CONF_DESCRIPTION): cv.string_strict,
-        cv.Optional(CONF_EXAMPLE): cv.string_strict,
-    }
-)
-
-# Accepts the plain `name: type` shorthand or the full mapping form
-validate_variable = cv.maybe_simple_value(VARIABLE_SCHEMA, key=CONF_TYPE)
-
-
 ACTIONS_SCHEMA = automation.validate_automation(
     {
         cv.GenerateID(CONF_TRIGGER_ID): cv.declare_id(UserServiceTrigger),
         cv.Exclusive(CONF_SERVICE, group_of_exclusion=CONF_ACTION): cv.valid_name,
         cv.Exclusive(CONF_ACTION, group_of_exclusion=CONF_ACTION): cv.valid_name,
-        cv.Optional(CONF_DESCRIPTION): cv.string_strict,
         cv.Optional(CONF_VARIABLES, default={}): cv.Schema(
             {
-                cv.validate_id_name: validate_variable,
+                cv.validate_id_name: cv.one_of(*SERVICE_ARG_NATIVE_TYPES, lower=True),
             }
         ),
         # No default - auto-detected by _auto_detect_supports_response
@@ -298,7 +270,7 @@ CONFIG_SCHEMA = cv.All(
     cv.Schema(
         {
             cv.GenerateID(): cv.declare_id(APIServer),
-            cv.Optional(CONF_PORT, default=DEFAULT_PORT): cv.port,
+            cv.Optional(CONF_PORT, default=6053): cv.port,
             # Removed in 2026.1.0 - kept to provide helpful error message
             cv.Optional(CONF_PASSWORD): cv.invalid(
                 "The 'password' option has been removed in ESPHome 2026.1.0.\n"
@@ -311,14 +283,14 @@ CONFIG_SCHEMA = cv.All(
                 "Or visit https://esphome.io/components/api/#configuration-variables"
             ),
             cv.Optional(
-                CONF_REBOOT_TIMEOUT, default=DEFAULT_REBOOT_TIMEOUT
+                CONF_REBOOT_TIMEOUT, default="15min"
             ): cv.positive_time_period_milliseconds,
             cv.Exclusive(
                 CONF_SERVICES, group_of_exclusion=CONF_ACTIONS
             ): ACTIONS_SCHEMA,
             cv.Exclusive(CONF_ACTIONS, group_of_exclusion=CONF_ACTIONS): ACTIONS_SCHEMA,
             cv.Optional(CONF_ENCRYPTION): encryption_schema,
-            cv.Optional(CONF_BATCH_DELAY, default=DEFAULT_BATCH_DELAY): cv.All(
+            cv.Optional(CONF_BATCH_DELAY, default="100ms"): cv.All(
                 cv.positive_time_period_milliseconds,
                 cv.Range(max=cv.TimePeriod(milliseconds=65535)),
             ),
@@ -356,9 +328,10 @@ CONFIG_SCHEMA = cv.All(
                 ln882x=5,  # Moderate RAM
                 nrf52=4,  # ~256KB RAM, BSD sockets, Thread (single HA controller)
             ): cv.int_range(min=1, max=20),
-            # Max queued messages per connection, and 2 KB of backlog per slot up
-            # to 64 KB (a lone message is exempt), before the connection is dropped
+            # Maximum queued send buffers per connection before dropping connection
+            # Each buffer uses ~8-12 bytes overhead plus actual message size
             # Platform defaults based on available RAM and typical message rates:
+            # CONF_MAX_SEND_QUEUE defaults are power of 2 for efficient modulo
             cv.SplitDefault(
                 CONF_MAX_SEND_QUEUE,
                 esp8266=4,  # Limited RAM, need to fail fast
@@ -378,85 +351,6 @@ CONFIG_SCHEMA = cv.All(
 )
 
 
-def _has_action_metadata(actions: list[ConfigType]) -> bool:
-    # Empty strings count as unset, matching _action_strings
-    return any(
-        conf.get(CONF_DESCRIPTION)
-        or any(
-            var_.get(CONF_DESCRIPTION) or var_.get(CONF_EXAMPLE)
-            for var_ in conf[CONF_VARIABLES].values()
-        )
-        for conf in actions
-    )
-
-
-def _action_strings(conf: ConfigType, has_metadata: bool) -> list[str | None]:
-    """Strings of one action in the table order UserServiceStatic (user_services.h) expects."""
-    # An empty description or example is treated as unset
-    strings: list[str | None] = [conf[CONF_ACTION]]
-    if has_metadata:
-        strings.append(conf.get(CONF_DESCRIPTION) or None)
-    for name, var_ in conf[CONF_VARIABLES].items():
-        strings.append(name)
-        if has_metadata:
-            strings += [
-                var_.get(CONF_DESCRIPTION) or None,
-                var_.get(CONF_EXAMPLE) or None,
-            ]
-    return strings
-
-
-def _action_strings_size(strings: list[str | None]) -> int:
-    """Bytes needed to copy every string out of flash, each with its terminator."""
-    return sum(
-        len(string.encode("utf-8")) + 1 for string in strings if string is not None
-    )
-
-
-def _validate_esp8266_action_strings(config: ConfigType) -> ConfigType:
-    if not CORE.is_esp8266:
-        return config
-    actions = config.get(CONF_ACTIONS, [])
-    has_metadata = _has_action_metadata(actions)
-    for conf in actions:
-        size = _action_strings_size(_action_strings(conf, has_metadata))
-        if size > ESP8266_ACTION_STRINGS_MAX_TOTAL:
-            raise cv.Invalid(
-                f"Action '{conf[CONF_ACTION]}' has {size} bytes of name, variable name, "
-                f"description and example text; ESP8266 allows at most "
-                f"{ESP8266_ACTION_STRINGS_MAX_TOTAL} bytes per action"
-            )
-    return config
-
-
-FINAL_VALIDATE_SCHEMA = _validate_esp8266_action_strings
-
-
-def _add_action_strings(
-    index: int, strings: list[str | None], interned: dict[str, MockObj]
-) -> MockObj:
-    """Emit the PROGMEM string table for one action.
-
-    Each string is its own PROGMEM array because on ESP8266 .rodata is RAM, and identical
-    strings are shared between actions through `interned`.
-    """
-    entries: list[MockObj] = []
-    for string in strings:
-        if string is None:
-            entries.append(cg.nullptr)
-            continue
-        if (var := interned.get(string)) is None:
-            var = interned[string] = cg.progmem_array(
-                ID(f"api_action_str{len(interned)}", is_declaration=True, type=cg.char),
-                string,
-            )
-        entries.append(var)
-    return cg.progmem_array(
-        ID(f"api_action{index}_strings", is_declaration=True, type=cg.const_char_ptr),
-        entries,
-    )
-
-
 @coroutine_with_priority(CoroPriority.WEB)
 async def to_code(config: ConfigType) -> None:
     var = cg.new_Pvariable(config[CONF_ID])
@@ -468,24 +362,16 @@ async def to_code(config: ConfigType) -> None:
     # Request a log listener slot for API log streaming
     request_log_listener()
 
-    # Skip the setters when the config matches the C++ initializers (DEFAULT_*).
-    if (port := config[CONF_PORT]) != DEFAULT_PORT:
-        cg.add(var.set_port(port))
-    if (reboot_timeout := config[CONF_REBOOT_TIMEOUT]) != cv.time_period(
-        DEFAULT_REBOOT_TIMEOUT
-    ):
-        cg.add(var.set_reboot_timeout(reboot_timeout))
-    if (batch_delay := config[CONF_BATCH_DELAY]) != cv.time_period(DEFAULT_BATCH_DELAY):
-        cg.add(var.set_batch_delay(batch_delay))
+    cg.add(var.set_port(config[CONF_PORT]))
+    cg.add(var.set_reboot_timeout(config[CONF_REBOOT_TIMEOUT]))
+    cg.add(var.set_batch_delay(config[CONF_BATCH_DELAY]))
     if CONF_LISTEN_BACKLOG in config:
         cg.add(var.set_listen_backlog(config[CONF_LISTEN_BACKLOG]))
     cg.add_define("MAX_API_CONNECTIONS", config[CONF_MAX_CONNECTIONS])
     cg.add_define("API_MAX_SEND_QUEUE", config[CONF_MAX_SEND_QUEUE])
 
-    actions = config.get(CONF_ACTIONS, [])
-    has_user_actions = bool(actions) or config[CONF_CUSTOM_SERVICES]
     # Set USE_API_USER_DEFINED_ACTIONS if any services are enabled
-    if has_user_actions:
+    if config.get(CONF_ACTIONS) or config[CONF_CUSTOM_SERVICES]:
         cg.add_define("USE_API_USER_DEFINED_ACTIONS")
 
     # Set USE_API_CUSTOM_SERVICES if external components need dynamic service registration
@@ -498,17 +384,10 @@ async def to_code(config: ConfigType) -> None:
     if config[CONF_HOMEASSISTANT_STATES]:
         cg.add_define("USE_API_HOMEASSISTANT_STATES")
 
-    scratch_size = 0
-    if actions:
-        # Metadata is compiled in for every action once any action declares it, because the
-        # string table layout is fixed by the define rather than per action
-        has_metadata = _has_action_metadata(actions)
-        if has_metadata:
-            cg.add_define("USE_API_USER_DEFINED_ACTION_METADATA")
-        interned_strings: dict[str, MockObj] = {}
+    if actions := config.get(CONF_ACTIONS, []):
         # Collect all triggers first, then register all at once with initializer_list
         triggers: list[cg.MockObj] = []
-        for index, conf in enumerate(actions):
+        for conf in actions:
             func_args: list[tuple[MockObj, str]] = []
             service_template_args: list[MockObj] = []  # User service argument types
 
@@ -541,23 +420,22 @@ async def to_code(config: ConfigType) -> None:
                 conf.get(CONF_THEN, [])
             )
 
+            service_arg_names: list[str] = []
             for name, var_ in conf[CONF_VARIABLES].items():
-                var_type = var_[CONF_TYPE]
-                if has_non_synchronous and var_type in SERVICE_ARG_FALLBACK_TYPES:
-                    native = SERVICE_ARG_FALLBACK_TYPES[var_type]
+                if has_non_synchronous and var_ in SERVICE_ARG_FALLBACK_TYPES:
+                    native = SERVICE_ARG_FALLBACK_TYPES[var_]
                 else:
-                    native = SERVICE_ARG_NATIVE_TYPES[var_type]
+                    native = SERVICE_ARG_NATIVE_TYPES[var_]
                 service_template_args.append(native)
                 func_args.append((native, name))
-            strings = _action_strings(conf, has_metadata)
-            table = _add_action_strings(index, strings, interned_strings)
-            if CORE.is_esp8266:
-                scratch_size = max(scratch_size, _action_strings_size(strings))
+                service_arg_names.append(name)
             # Template args: supports_response mode, then user service arg types
             templ = cg.TemplateArguments(supports_response, *service_template_args)
-            # Key is hashed here because the name is not readable at runtime on ESP8266
             trigger = cg.new_Pvariable(
-                conf[CONF_TRIGGER_ID], templ, table, fnv1_hash(conf[CONF_ACTION])
+                conf[CONF_TRIGGER_ID],
+                templ,
+                conf[CONF_ACTION],
+                service_arg_names,
             )
             triggers.append(trigger)
             auto = await automation.build_automation(trigger, func_args, conf)
@@ -579,9 +457,6 @@ async def to_code(config: ConfigType) -> None:
                 cg.add(auto.add_actions([unregister_action]))
         # Register all services at once - single allocation, no reallocations
         cg.add(var.initialize_user_services(triggers))
-    if CORE.is_esp8266 and has_user_actions:
-        # Stack buffer that list-entities copies PROGMEM strings into, sized for the largest action
-        cg.add_define("API_USER_ACTION_STRINGS_SCRATCH_SIZE", max(scratch_size, 1))
 
     if CONF_ON_CLIENT_CONNECTED in config:
         cg.add_define("USE_API_CLIENT_CONNECTED_TRIGGER")
@@ -601,7 +476,8 @@ async def to_code(config: ConfigType) -> None:
 
     if (encryption_config := config.get(CONF_ENCRYPTION, None)) is not None:
         if key := encryption_config.get(CONF_KEY):
-            cg.add(var.set_noise_psk(new_psk_progmem(config[CONF_ID], key)))
+            decoded = decode_encryption_key(key)
+            cg.add(var.set_noise_psk(list(decoded)))
             cg.add_define("USE_API_NOISE_PSK_FROM_YAML")
         else:
             # No key provided, but encryption desired
@@ -623,40 +499,6 @@ async def to_code(config: ConfigType) -> None:
 
 KEY_VALUE_SCHEMA = cv.Schema({cv.string: cv.templatable(cv.string_strict)})
 
-_ID_CALL_PROG = re.compile(r"\bid\s*\(")
-
-
-# Remove before 2027.3.0: untagged strings that look like lambda source keep
-# being compiled as lambdas during the deprecation window
-def _coerce_implicit_lambda(value: Any) -> Any:
-    if not isinstance(value, str):
-        return value
-    if cv.looks_like_returning_lambda(value):
-        _LOGGER.warning(
-            "[api] The 'variables' value '%s' looks like a lambda but is "
-            "missing the !lambda tag. It is compiled as a lambda for now but "
-            "will be sent as literal text from 2027.3.0. Add !lambda to keep "
-            "it evaluated; literal text belongs under 'data:'.",
-            value,
-        )
-        # cv.templatable runs returning_lambda on the coerced Lambda
-        return cv.lambda_(value)
-    if _ID_CALL_PROG.search(value):
-        # lambda source without a return: issue 5394's mistake class
-        _LOGGER.warning(
-            "[api] The 'variables' value '%s' is sent as literal text; wrap "
-            "it in !lambda 'return ...;' to evaluate it instead.",
-            value,
-        )
-    return value
-
-
-# Static strings or !lambda values. cv.templatable stays introspectable for
-# schema tooling; removing the shim leaves KEY_VALUE_SCHEMA.
-VARIABLES_SCHEMA = cv.Schema(
-    {cv.string: cv.All(_coerce_implicit_lambda, cv.templatable(cv.string_strict))}
-)
-
 
 def _validate_response_config(config: ConfigType) -> ConfigType:
     # Validate dependencies:
@@ -693,7 +535,9 @@ HOMEASSISTANT_ACTION_ACTION_SCHEMA = cv.All(
             ),
             cv.Optional(CONF_DATA, default={}): KEY_VALUE_SCHEMA,
             cv.Optional(CONF_DATA_TEMPLATE, default={}): KEY_VALUE_SCHEMA,
-            cv.Optional(CONF_VARIABLES, default={}): VARIABLES_SCHEMA,
+            cv.Optional(CONF_VARIABLES, default={}): cv.Schema(
+                {cv.string: cv.returning_lambda}
+            ),
             cv.Optional(CONF_RESPONSE_TEMPLATE): cv.templatable(cv.string),
             cv.Optional(CONF_CAPTURE_RESPONSE, default=False): cv.boolean,
             cv.Optional(CONF_ON_SUCCESS): automation.validate_automation(single=True),
@@ -754,8 +598,6 @@ async def homeassistant_service_to_code(
     cg.add(var.init_variables(len(config[CONF_VARIABLES])))
     for key, value in config[CONF_VARIABLES].items():
         templ = await cg.templatable(value, args, None)
-        if isinstance(templ, str):
-            templ = cg.FlashStringLiteral(templ)
         cg.add(var.add_variable(cg.FlashStringLiteral(key), templ))
 
     if on_error := config.get(CONF_ON_ERROR):
@@ -810,7 +652,7 @@ HOMEASSISTANT_EVENT_ACTION_SCHEMA = cv.Schema(
         cv.Required(CONF_EVENT): validate_homeassistant_event,
         cv.Optional(CONF_DATA, default={}): KEY_VALUE_SCHEMA,
         cv.Optional(CONF_DATA_TEMPLATE, default={}): KEY_VALUE_SCHEMA,
-        cv.Optional(CONF_VARIABLES, default={}): VARIABLES_SCHEMA,
+        cv.Optional(CONF_VARIABLES, default={}): KEY_VALUE_SCHEMA,
     }
 )
 
@@ -856,8 +698,6 @@ async def homeassistant_event_to_code(
     cg.add(var.init_variables(len(config[CONF_VARIABLES])))
     for key, value in config[CONF_VARIABLES].items():
         templ = await cg.templatable(value, args, None)
-        if isinstance(templ, str):
-            templ = cg.FlashStringLiteral(templ)
         cg.add(var.add_variable(cg.FlashStringLiteral(key), templ))
 
     return var

esphome/components/api/api.proto

@@ -77,7 +77,6 @@ service APIConnection {
   rpc serial_proxy_set_modem_pins(SerialProxySetModemPinsRequest) returns (void) {}
   rpc serial_proxy_get_modem_pins(SerialProxyGetModemPinsRequest) returns (void) {}
   rpc serial_proxy_request(SerialProxyRequest) returns (void) {}
-  rpc serial_proxy_set_mode(SerialProxySetModeRequest) returns (void) {}
 }
 
 
@@ -233,7 +232,6 @@ enum SerialProxyPortType {
 message SerialProxyInfo {
   string name = 1;                    // Human-readable port name
   SerialProxyPortType port_type = 2;  // Port type (RS232, RS485)
-  uint32 configured_line_states = 3;  // Bitmask of SerialProxyLineStateFlags this instance can drive
 }
 
 // DeviceInfoResponse max_data_length values:
@@ -1035,8 +1033,6 @@ message ListEntitiesServicesArgument {
   option (ifdef) = "USE_API_USER_DEFINED_ACTIONS";
   string name = 1;
   ServiceArgType type = 2;
-  string description = 3 [(field_ifdef) = "USE_API_USER_DEFINED_ACTION_METADATA"];
-  string example = 4 [(field_ifdef) = "USE_API_USER_DEFINED_ACTION_METADATA"];
 }
 message ListEntitiesServicesResponse {
   option (id) = 41;
@@ -1047,7 +1043,6 @@ message ListEntitiesServicesResponse {
   fixed32 key = 2 [(force) = true];
   repeated ListEntitiesServicesArgument args = 3 [(fixed_vector) = true];
   SupportsResponseType supports_response = 4;
-  string description = 5 [(field_ifdef) = "USE_API_USER_DEFINED_ACTION_METADATA"];
 }
 message ExecuteServiceArgument {
   option (ifdef) = "USE_API_USER_DEFINED_ACTIONS";
@@ -1658,8 +1653,7 @@ message ListEntitiesMediaPlayerResponse {
   bool disabled_by_default = 6;
   EntityCategory entity_category = 7;
 
-  // Deprecated in ESPHome 2026.9.0; use feature_flags instead.
-  bool supports_pause = 8 [deprecated = true];
+  bool supports_pause = 8;
 
   repeated MediaPlayerSupportedFormat supported_formats = 9;
 
@@ -2632,22 +2626,6 @@ message ZWaveProxyRequest {
   bytes data = 2;
 }
 
-enum ZWaveProxyStatus {
-  ZWAVE_PROXY_STATUS_OK = 0;             // Request completed successfully
-  ZWAVE_PROXY_STATUS_IN_USE = 1;         // Denied: another client is already subscribed
-  ZWAVE_PROXY_STATUS_NOT_SUPPORTED = 2;  // Request type not supported
-}
-
-// Acknowledges a ZWaveProxyRequest (subscribe/unsubscribe). Sent since API 1.16.
-message ZWaveProxyRequestResponse {
-  option (id) = 151;
-  option (source) = SOURCE_SERVER;
-  option (ifdef) = "USE_ZWAVE_PROXY";
-
-  ZWaveProxyRequestType type = 1;  // Which request type this responds to
-  ZWaveProxyStatus status = 2;     // Result status
-}
-
 // ==================== INFRARED ====================
 // Note: Feature and capability flag enums are defined in
 // esphome/components/infrared/infrared.h
@@ -2727,8 +2705,7 @@ enum SerialProxyParity {
   SERIAL_PROXY_PARITY_ODD = 2;
 }
 
-// Configure UART parameters for a serial proxy instance. Only the subscribed client may
-// configure the port; others are refused with PORT_IN_USE (since API 1.17).
+// Configure UART parameters for a serial proxy instance
 message SerialProxyConfigureRequest {
   option (id) = 138;
   option (source) = SOURCE_CLIENT;
@@ -2754,8 +2731,7 @@ message SerialProxyDataReceived {
   bytes data = 2;               // Raw data received from the serial device
 }
 
-// Write data to a serial device. Only the subscribed client may write; writes from
-// others are ignored (since API 1.17).
+// Write data to a serial device
 message SerialProxyWriteRequest {
   option (id) = 140;
   option (source) = SOURCE_CLIENT;
@@ -2766,8 +2742,7 @@ message SerialProxyWriteRequest {
   bytes data = 2;               // Raw data to write to the serial device
 }
 
-// Set modem control pin states (RTS and DTR). Only the subscribed client may set them;
-// others are refused with PORT_IN_USE (since API 1.17).
+// Set modem control pin states (RTS and DTR)
 message SerialProxySetModemPinsRequest {
   option (id) = 141;
   option (source) = SOURCE_CLIENT;
@@ -2794,19 +2769,12 @@ message SerialProxyGetModemPinsResponse {
 
   uint32 instance = 1;          // Instance index (0-based)
   uint32 line_states = 2;       // Bitmask of SerialProxyLineStateFlags
-  SerialProxyStatus status = 3; // INVALID_ARGUMENT if the instance index is out of range (since API 1.16)
 }
 
 enum SerialProxyRequestType {
   SERIAL_PROXY_REQUEST_TYPE_SUBSCRIBE = 0;   // Subscribe to receive data from this serial proxy instance
   SERIAL_PROXY_REQUEST_TYPE_UNSUBSCRIBE = 1; // Unsubscribe from this serial proxy instance
   SERIAL_PROXY_REQUEST_TYPE_FLUSH = 2;       // Flush the serial port (block until all TX data is sent)
-  // Values below are only valid in SerialProxyRequestResponse.type, identifying which
-  // operation is being acknowledged. Sending them in SerialProxyRequest.type is an
-  // error the device answers with INVALID_ARGUMENT.
-  SERIAL_PROXY_REQUEST_TYPE_CONFIGURE = 3;      // Acknowledges a SerialProxyConfigureRequest
-  SERIAL_PROXY_REQUEST_TYPE_SET_MODEM_PINS = 4; // Acknowledges a SerialProxySetModemPinsRequest
-  SERIAL_PROXY_REQUEST_TYPE_SET_MODE = 5;       // Acknowledges a SerialProxySetModeRequest (since API 1.17)
 }
 
 enum SerialProxyStatus {
@@ -2815,12 +2783,9 @@ enum SerialProxyStatus {
   SERIAL_PROXY_STATUS_ERROR = 2;           // Driver or hardware error
   SERIAL_PROXY_STATUS_TIMEOUT = 3;         // Timed out before TX completed
   SERIAL_PROXY_STATUS_NOT_SUPPORTED = 4;   // Request type not supported by this instance
-  SERIAL_PROXY_STATUS_PORT_IN_USE = 5;     // Denied: another client holds the port
-  SERIAL_PROXY_STATUS_INVALID_ARGUMENT = 6; // Invalid instance index or parameter value
 }
 
-// Generic request message for simple serial proxy operations. FLUSH requires an active
-// subscription; it is refused with PORT_IN_USE otherwise (since API 1.17).
+// Generic request message for simple serial proxy operations
 message SerialProxyRequest {
   option (id) = 144;
   option (source) = SOURCE_CLIENT;
@@ -2830,9 +2795,7 @@ message SerialProxyRequest {
   SerialProxyRequestType type = 2;      // Request type
 }
 
-// Acknowledges a serial proxy operation; the type field identifies which
-// operation is being acknowledged. Flush has been acknowledged since the
-// message was introduced; all other acknowledgements are sent since API 1.16.
+// Response to a SerialProxyRequest (e.g. flush completion or failure)
 message SerialProxyRequestResponse {
   option (id) = 147;
   option (source) = SOURCE_SERVER;
@@ -2844,29 +2807,6 @@ message SerialProxyRequestResponse {
   string error_message = 4;            // Additional detail on failure (optional)
 }
 
-// How a port treats the bytes passing through it. RAW is a plain byte pipe; PROTOCOL
-// activates the port's protocol-aware tap (if one is configured), letting it observe
-// traffic and inject protocol bytes such as acknowledgements. Which protocol the tap
-// speaks is a property of the device configuration, discoverable from the tap
-// component's own API surface. A client that is about to flash firmware selects RAW
-// first, which definitively disables that injection.
-enum SerialProxyMode {
-  SERIAL_PROXY_MODE_RAW = 0;
-  SERIAL_PROXY_MODE_PROTOCOL = 1;
-}
-
-// Only the subscribed client may change the mode; any other caller -- including one that
-// never subscribed -- is refused with PORT_IN_USE. PROTOCOL is refused with NOT_SUPPORTED
-// when the port has no protocol-aware tap configured.
-message SerialProxySetModeRequest {
-  option (id) = 152;
-  option (source) = SOURCE_CLIENT;
-  option (ifdef) = "USE_SERIAL_PROXY";
-
-  uint32 instance = 1;
-  SerialProxyMode mode = 2;
-}
-
 // ==================== BLUETOOTH CONNECTION PARAMS ====================
 message BluetoothSetConnectionParamsRequest {
   option (id) = 145;

esphome/components/api/api_buffer.cpp

@@ -1,37 +1,13 @@
 #include "api_buffer.h"
-#ifdef ESPHOME_DEBUG_API
-#include "esphome/core/log.h"
-#endif
 
 namespace esphome::api {
 
-#ifdef ESPHOME_DEBUG_API
-void APIBuffer::debug_check_drop_(size_t drop) const {
-  if (drop > this->size_) {
-    ESP_LOGE("api.buffer", "drop_front: drop=%zu size=%u", drop, this->size_);
-    abort();
-  }
-}
-#endif
-
-bool APIBuffer::grow_(size_t n) {
-  if (n > MAX_SIZE)
-    return false;
-  // realloc extends in place when it can, avoiding the copy
-  uint8_t *grown = RAMAllocator<uint8_t>().reallocate(this->data_.get(), n);
-  if (grown == nullptr)
-    return false;
-  (void) this->data_.release();  // realloc already freed or reused the old block
-  this->data_.reset(grown);
+void APIBuffer::grow_(size_t n) {
+  auto new_data = make_buffer(n);
+  if (this->size_)
+    std::memcpy(new_data.get(), this->data_.get(), this->size_);
+  this->data_ = std::move(new_data);
   this->capacity_ = n;
-  return true;
-}
-
-uint8_t *APIBuffer::append(size_t n) {
-  const size_t old_size = this->size_;
-  if (!this->resize(old_size + n))
-    return nullptr;
-  return this->data_.get() + old_size;
 }
 
 }  // namespace esphome::api

esphome/components/api/api_buffer.h

@@ -9,6 +9,16 @@
 
 namespace esphome::api {
 
+/// Helper to use make_unique_for_overwrite where available (skips zero-fill),
+/// falling back to make_unique on older GCC (ESP8266, LibreTiny).
+inline std::unique_ptr<uint8_t[]> make_buffer(size_t n) {
+#if defined(USE_ESP8266) || defined(USE_LIBRETINY)
+  return std::make_unique<uint8_t[]>(n);
+#else
+  return std::make_unique_for_overwrite<uint8_t[]>(n);
+#endif
+}
+
 /// Byte buffer that skips zero-initialization on resize().
 ///
 /// std::vector<uint8_t>::resize() zero-fills new bytes via memset. For the
@@ -25,35 +35,24 @@ namespace esphome::api {
 /// writes in debug builds.
 class APIBuffer {
  public:
-  static constexpr size_t MAX_SIZE = UINT16_MAX;  // API frames carry 16 bit lengths
   void clear() { this->size_ = 0; }
-  /// Returns false if allocation fails; the buffer is left unchanged.
-  [[nodiscard]] inline bool reserve(size_t n) ESPHOME_ALWAYS_INLINE { return n <= this->capacity_ || this->grow_(n); }
-  /// Returns false if allocation fails; the buffer is left unchanged. No zero-fill.
-  [[nodiscard]] inline bool resize(size_t n) ESPHOME_ALWAYS_INLINE { return this->reserve_and_resize(n, n); }
+  inline void reserve(size_t n) ESPHOME_ALWAYS_INLINE {
+    if (n > this->capacity_)
+      this->grow_(n);
+  }
+  inline void resize(size_t n) ESPHOME_ALWAYS_INLINE {
+    this->reserve(n);
+    this->size_ = n;  // no zero-fill
+  }
   /// Reserve capacity for max(reserve_size, new_size) bytes, then set size to new_size.
   /// Single grow_ check regardless of argument order.
-  /// Returns false if allocation fails; the buffer is left unchanged.
-  [[nodiscard]] inline bool reserve_and_resize(size_t reserve_size, size_t new_size) ESPHOME_ALWAYS_INLINE {
-    if (!this->reserve(std::max(reserve_size, new_size)))
-      return false;
-    this->size_ = static_cast<uint16_t>(new_size);
-    return true;
-  }
-  /// Grow by n bytes; returns the new bytes, or nullptr on allocation failure.
-  [[nodiscard]] uint8_t *append(size_t n);
-  /// Drop the first `drop` bytes, sliding the rest down. Precondition: drop <= size().
-  void drop_front(size_t drop) {
-#ifdef ESPHOME_DEBUG_API
-    this->debug_check_drop_(drop);
-#endif
-    this->size_ -= drop;
-    std::memmove(this->data_.get(), this->data_.get() + drop, this->size_);
+  inline void reserve_and_resize(size_t reserve_size, size_t new_size) ESPHOME_ALWAYS_INLINE {
+    this->reserve(std::max(reserve_size, new_size));
+    this->size_ = new_size;
   }
   uint8_t *data() { return this->data_.get(); }
   const uint8_t *data() const { return this->data_.get(); }
   size_t size() const { return this->size_; }
-  size_t capacity() const { return this->capacity_; }
   bool empty() const { return this->size_ == 0; }
   uint8_t &operator[](size_t i) { return this->data_[i]; }
   const uint8_t &operator[](size_t i) const { return this->data_[i]; }
@@ -65,15 +64,10 @@ class APIBuffer {
   }
 
  protected:
-  bool grow_(size_t n);
-#ifdef ESPHOME_DEBUG_API
-  void debug_check_drop_(size_t drop) const;
-#endif
-  // RAMAllocator: PSRAM when available, and it reports failure where
-  // new (std::nothrow) still aborts on ESP-IDF without exceptions
-  RAMUniquePtr<uint8_t[]> data_;
-  uint16_t size_{0};
-  uint16_t capacity_{0};
+  void grow_(size_t n);
+  std::unique_ptr<uint8_t[]> data_;
+  size_t size_{0};
+  size_t capacity_{0};
 };
 
 }  // namespace esphome::api

esphome/components/api/api_connection.cpp

@@ -1,6 +1,6 @@
 #include "api_connection.h"
 #ifdef USE_API
-#include "api_connection_buffer.h"  // for the APIServer-dependent APIConnection inlines
+#include "api_connection_buffer.h"  // for encode_to_buffer / get_batch_delay_ms_ inlines
 #ifdef USE_API_NOISE
 #include "api_frame_helper_noise.h"
 #endif
@@ -364,10 +364,7 @@ void APIConnection::check_keepalive_(uint32_t now) {
     ESP_LOGVV(TAG, "Sending keepalive PING");
     PingRequest req;
     this->flags_.sent_ping = this->send_message(req);
-    if (this->flags_.sent_ping) {
-      // Quiet for a keepalive period and the ping is on its way: a one-off stall's storage can go
-      this->helper_->release_overflow_buffer();
-    } else {
+    if (!this->flags_.sent_ping) {
       // If we can't send the ping request directly (tx_buffer full),
       // schedule it at the front of the batch so it will be sent with priority
       ESP_LOGW(TAG, "Buffer full, ping queued");
@@ -720,7 +717,12 @@ uint16_t APIConnection::try_send_switch_info(EntityBase *entity, APIConnection *
 }
 void APIConnection::on_switch_command_request(const SwitchCommandRequest &msg) {
   ENTITY_COMMAND_GET(switch_::Switch, a_switch, switch)
-  a_switch->control(msg.state);
+
+  if (msg.state) {
+    a_switch->turn_on();
+  } else {
+    a_switch->turn_off();
+  }
 }
 #endif
 
@@ -1097,6 +1099,7 @@ uint16_t APIConnection::try_send_media_player_info(EntityBase *entity, APIConnec
   auto *media_player = static_cast<media_player::MediaPlayer *>(entity);
   ListEntitiesMediaPlayerResponse msg;
   auto traits = media_player->get_traits();
+  msg.supports_pause = traits.get_supports_pause();
   msg.feature_flags = traits.get_feature_flags();
   for (auto &supported_format : traits.get_supported_formats()) {
     msg.supported_formats.emplace_back();
@@ -1378,12 +1381,7 @@ void APIConnection::on_z_wave_proxy_frame(const ZWaveProxyFrame &msg) {
 }
 
 void APIConnection::on_z_wave_proxy_request(const ZWaveProxyRequest &msg) {
-  ZWaveProxyRequestResponse resp{};
-  resp.type = msg.type;
-  resp.status = zwave_proxy::global_zwave_proxy->zwave_proxy_request(this, msg.type);
-  if (!this->send_message(resp)) {
-    API_LOG_MSG_DROPPED(TAG, "Z-Wave proxy response");
-  }
+  zwave_proxy::global_zwave_proxy->zwave_proxy_request(this, msg.type);
 }
 #endif
 
@@ -1552,50 +1550,15 @@ void APIConnection::send_infrared_rf_receive_event(const InfraredRFReceiveEvent
 #endif
 
 #ifdef USE_SERIAL_PROXY
-static enums::SerialProxyStatus serial_proxy_result_to_status(serial_proxy::SerialProxyResult result) {
-  switch (result) {
-    case serial_proxy::SerialProxyResult::SERIAL_PROXY_RESULT_OK:
-      return enums::SERIAL_PROXY_STATUS_OK;
-    case serial_proxy::SerialProxyResult::SERIAL_PROXY_RESULT_ASSUMED_SUCCESS:
-      return enums::SERIAL_PROXY_STATUS_ASSUMED_SUCCESS;
-    case serial_proxy::SerialProxyResult::SERIAL_PROXY_RESULT_PORT_IN_USE:
-      return enums::SERIAL_PROXY_STATUS_PORT_IN_USE;
-    case serial_proxy::SerialProxyResult::SERIAL_PROXY_RESULT_INVALID_ARGUMENT:
-      return enums::SERIAL_PROXY_STATUS_INVALID_ARGUMENT;
-    case serial_proxy::SerialProxyResult::SERIAL_PROXY_RESULT_TIMEOUT:
-      return enums::SERIAL_PROXY_STATUS_TIMEOUT;
-    case serial_proxy::SerialProxyResult::SERIAL_PROXY_RESULT_NOT_SUPPORTED:
-      return enums::SERIAL_PROXY_STATUS_NOT_SUPPORTED;
-    case serial_proxy::SerialProxyResult::SERIAL_PROXY_RESULT_ERROR:
-      return enums::SERIAL_PROXY_STATUS_ERROR;
-  }
-  return enums::SERIAL_PROXY_STATUS_ERROR;  // Unreachable; all enum values handled above
-}
-
-static void send_serial_proxy_ack(APIConnection *conn, uint32_t instance, enums::SerialProxyRequestType type,
-                                  enums::SerialProxyStatus status) {
-  SerialProxyRequestResponse resp{};
-  resp.instance = instance;
-  resp.type = type;
-  resp.status = status;
-  if (!conn->send_message(resp)) {
-    API_LOG_MSG_DROPPED(TAG, "Serial proxy response");
-  }
-}
-
 void APIConnection::on_serial_proxy_configure_request(const SerialProxyConfigureRequest &msg) {
   auto &proxies = App.get_serial_proxies();
   if (msg.instance >= proxies.size()) {
     ESP_LOGW(TAG, "Serial proxy instance %" PRIu32 " out of range (max %" PRIu32 ")", msg.instance,
              static_cast<uint32_t>(proxies.size()));
-    send_serial_proxy_ack(this, msg.instance, enums::SERIAL_PROXY_REQUEST_TYPE_CONFIGURE,
-                          enums::SERIAL_PROXY_STATUS_INVALID_ARGUMENT);
     return;
   }
-  serial_proxy::SerialProxyResult result = proxies[msg.instance]->configure(
-      this, msg.baudrate, msg.flow_control, static_cast<uint8_t>(msg.parity), msg.stop_bits, msg.data_size);
-  send_serial_proxy_ack(this, msg.instance, enums::SERIAL_PROXY_REQUEST_TYPE_CONFIGURE,
-                        serial_proxy_result_to_status(result));
+  proxies[msg.instance]->configure(this, msg.baudrate, msg.flow_control, static_cast<uint8_t>(msg.parity),
+                                   msg.stop_bits, msg.data_size);
 }
 
 void APIConnection::on_serial_proxy_write_request(const SerialProxyWriteRequest &msg) {
@@ -1611,30 +1574,20 @@ void APIConnection::on_serial_proxy_set_modem_pins_request(const SerialProxySetM
   auto &proxies = App.get_serial_proxies();
   if (msg.instance >= proxies.size()) {
     ESP_LOGW(TAG, "Serial proxy instance %" PRIu32 " out of range", msg.instance);
-    send_serial_proxy_ack(this, msg.instance, enums::SERIAL_PROXY_REQUEST_TYPE_SET_MODEM_PINS,
-                          enums::SERIAL_PROXY_STATUS_INVALID_ARGUMENT);
     return;
   }
-  serial_proxy::SerialProxyResult result = proxies[msg.instance]->set_modem_pins(this, msg.line_states);
-  send_serial_proxy_ack(this, msg.instance, enums::SERIAL_PROXY_REQUEST_TYPE_SET_MODEM_PINS,
-                        serial_proxy_result_to_status(result));
+  proxies[msg.instance]->set_modem_pins(this, msg.line_states);
 }
 
 void APIConnection::on_serial_proxy_get_modem_pins_request(const SerialProxyGetModemPinsRequest &msg) {
   auto &proxies = App.get_serial_proxies();
-  SerialProxyGetModemPinsResponse resp{};
-  resp.instance = msg.instance;
   if (msg.instance >= proxies.size()) {
     ESP_LOGW(TAG, "Serial proxy instance %" PRIu32 " out of range", msg.instance);
-    // Pre-1.16 clients do not read the status field and would take this error
-    // for a successful "both pins deasserted" answer; let them time out as before
-    if (!this->client_supports_api_version(1, 16)) {
-      return;
-    }
-    resp.status = enums::SERIAL_PROXY_STATUS_INVALID_ARGUMENT;
-  } else {
-    resp.line_states = proxies[msg.instance]->get_modem_pins();
+    return;
   }
+  SerialProxyGetModemPinsResponse resp{};
+  resp.instance = msg.instance;
+  resp.line_states = proxies[msg.instance]->get_modem_pins();
   if (!this->send_message(resp)) {
     API_LOG_MSG_DROPPED(TAG, "Serial proxy response");
   }
@@ -1644,45 +1597,40 @@ void APIConnection::on_serial_proxy_request(const SerialProxyRequest &msg) {
   auto &proxies = App.get_serial_proxies();
   if (msg.instance >= proxies.size()) {
     ESP_LOGW(TAG, "Serial proxy instance %" PRIu32 " out of range", msg.instance);
-    send_serial_proxy_ack(this, msg.instance, msg.type, enums::SERIAL_PROXY_STATUS_INVALID_ARGUMENT);
     return;
   }
-  auto *proxy = proxies[msg.instance];
-  enums::SerialProxyStatus status;
   switch (msg.type) {
     case enums::SERIAL_PROXY_REQUEST_TYPE_SUBSCRIBE:
     case enums::SERIAL_PROXY_REQUEST_TYPE_UNSUBSCRIBE:
-      status = serial_proxy_result_to_status(proxy->serial_proxy_request(this, msg.type));
+      proxies[msg.instance]->serial_proxy_request(this, msg.type);
       break;
-    case enums::SERIAL_PROXY_REQUEST_TYPE_FLUSH:
-      status = serial_proxy_result_to_status(proxy->flush_port(this));
-      break;
-    case enums::SERIAL_PROXY_REQUEST_TYPE_CONFIGURE:
-    case enums::SERIAL_PROXY_REQUEST_TYPE_SET_MODEM_PINS:
-    case enums::SERIAL_PROXY_REQUEST_TYPE_SET_MODE:
-      // Response-only discriminators; never valid in a request
-      ESP_LOGW(TAG, "Response-only serial proxy request type: %" PRIu32, static_cast<uint32_t>(msg.type));
-      status = enums::SERIAL_PROXY_STATUS_INVALID_ARGUMENT;
+    case enums::SERIAL_PROXY_REQUEST_TYPE_FLUSH: {
+      SerialProxyRequestResponse resp{};
+      resp.instance = msg.instance;
+      resp.type = enums::SERIAL_PROXY_REQUEST_TYPE_FLUSH;
+      switch (proxies[msg.instance]->flush_port()) {
+        case uart::UARTFlushResult::UART_FLUSH_RESULT_SUCCESS:
+          resp.status = enums::SERIAL_PROXY_STATUS_OK;
+          break;
+        case uart::UARTFlushResult::UART_FLUSH_RESULT_ASSUMED_SUCCESS:
+          resp.status = enums::SERIAL_PROXY_STATUS_ASSUMED_SUCCESS;
+          break;
+        case uart::UARTFlushResult::UART_FLUSH_RESULT_TIMEOUT:
+          resp.status = enums::SERIAL_PROXY_STATUS_TIMEOUT;
+          break;
+        case uart::UARTFlushResult::UART_FLUSH_RESULT_FAILED:
+          resp.status = enums::SERIAL_PROXY_STATUS_ERROR;
+          break;
+      }
+      if (!this->send_message(resp)) {
+        API_LOG_MSG_DROPPED(TAG, "Serial proxy response");
+      }
       break;
+    }
     default:
       ESP_LOGW(TAG, "Unknown serial proxy request type: %" PRIu32, static_cast<uint32_t>(msg.type));
-      status = enums::SERIAL_PROXY_STATUS_NOT_SUPPORTED;
       break;
   }
-  send_serial_proxy_ack(this, msg.instance, msg.type, status);
-}
-
-void APIConnection::on_serial_proxy_set_mode_request(const SerialProxySetModeRequest &msg) {
-  auto &proxies = App.get_serial_proxies();
-  if (msg.instance >= proxies.size()) {
-    ESP_LOGW(TAG, "Serial proxy instance %" PRIu32 " out of range", msg.instance);
-    send_serial_proxy_ack(this, msg.instance, enums::SERIAL_PROXY_REQUEST_TYPE_SET_MODE,
-                          enums::SERIAL_PROXY_STATUS_INVALID_ARGUMENT);
-    return;
-  }
-  serial_proxy::SerialProxyResult result = proxies[msg.instance]->set_mode_from_client(this, msg.mode);
-  send_serial_proxy_ack(this, msg.instance, enums::SERIAL_PROXY_REQUEST_TYPE_SET_MODE,
-                        serial_proxy_result_to_status(result));
 }
 
 void APIConnection::send_serial_proxy_data(const SerialProxyDataReceived &msg) {
@@ -1801,17 +1749,15 @@ void APIConnection::complete_authentication_() {
 bool APIConnection::send_hello_response_(const HelloRequest &msg) {
   // Copy client name with truncation if needed (set_client_name handles truncation)
   this->helper_->set_client_name(msg.client_info.c_str(), msg.client_info.size());
-  this->client_api_version_major_ =
-      static_cast<uint8_t>(std::min<uint32_t>(msg.api_version_major, std::numeric_limits<uint8_t>::max()));
-  this->client_api_version_minor_ =
-      static_cast<uint8_t>(std::min<uint32_t>(msg.api_version_minor, std::numeric_limits<uint8_t>::max()));
+  this->client_api_version_major_ = msg.api_version_major;
+  this->client_api_version_minor_ = msg.api_version_minor;
   char peername[socket::SOCKADDR_STR_LEN];
-  ESP_LOGV(TAG, "Hello from client: '%s' | %s | API Version %u.%u", this->helper_->get_client_name(),
+  ESP_LOGV(TAG, "Hello from client: '%s' | %s | API Version %" PRIu16 ".%" PRIu16, this->helper_->get_client_name(),
            this->helper_->get_peername_to(peername), this->client_api_version_major_, this->client_api_version_minor_);
 
   HelloResponse resp;
   resp.api_version_major = 1;
-  resp.api_version_minor = 17;
+  resp.api_version_minor = 15;
   // Send only the version string - the client only logs this for debugging and doesn't use it otherwise
   resp.server_info = ESPHOME_VERSION_REF;
   resp.name = StringRef(App.get_name());
@@ -1945,7 +1891,6 @@ bool APIConnection::send_device_info_response_() {
     auto &info = resp.serial_proxies[serial_proxy_index++];
     info.name = StringRef(proxy->get_name());
     info.port_type = proxy->get_port_type();
-    info.configured_line_states = proxy->get_configured_modem_pins();
   }
 #endif
 #ifdef USE_API_NOISE
@@ -2006,7 +1951,6 @@ bool APIConnection::send_device_capabilities_response_() {
     auto &info = resp.serial_proxies[serial_proxy_index++];
     info.name = StringRef(proxy->get_name());
     info.port_type = proxy->get_port_type();
-    info.configured_line_states = proxy->get_configured_modem_pins();
   }
 #endif
   return this->send_message(resp);
@@ -2173,10 +2117,7 @@ void APIConnection::on_homeassistant_action_response(const HomeassistantActionRe
 bool APIConnection::send_noise_encryption_set_key_response_(const NoiseEncryptionSetKeyRequest &msg) {
   NoiseEncryptionSetKeyResponse resp;
   resp.success = false;
-#ifdef USE_API_NOISE_PSK_FROM_YAML
-  // A yaml key cannot be changed at runtime, so no decode or save path is built
-  ESP_LOGW(TAG, "Key set in YAML");
-#else
+
 #ifdef USE_PROVISIONING
   // Refuse to set a key once the provisioning window has closed (defense in depth;
   // such connections are already rejected at hello).
@@ -2211,7 +2152,6 @@ bool APIConnection::send_noise_encryption_set_key_response_(const NoiseEncryptio
     }
 #endif
   }
-#endif  // USE_API_NOISE_PSK_FROM_YAML
 
   return this->send_message(resp);
 }
@@ -2241,7 +2181,7 @@ bool APIConnection::try_to_clear_buffer_slow_(bool log_out_of_space) {
   }
   return false;
 }
-bool APIConnection::send_message_(uint32_t payload_size, uint16_t message_type, MessageEncodeFn encode_fn,
+bool APIConnection::send_message_(uint32_t payload_size, uint8_t message_type, MessageEncodeFn encode_fn,
                                   const void *msg) {
 #ifdef HAS_PROTO_MESSAGE_DUMP
   // Skip dump for log messages (recursive logging risk) and camera frames (high-frequency noise)
@@ -2255,17 +2195,10 @@ bool APIConnection::send_message_(uint32_t payload_size, uint16_t message_type,
     this->log_send_message_(proto_msg->message_name(), proto_msg->dump_to(dump_buf));
   }
 #endif
-  if (!this->prepare_first_message_buffer(payload_size)) [[unlikely]] {
-    this->fatal_out_of_memory_();
-    return false;
-  }
   auto &shared_buf = this->parent_->get_shared_buffer_ref();
+  this->prepare_first_message_buffer(shared_buf, payload_size);
   size_t write_start = shared_buf.size();
-#ifdef ESPHOME_DEBUG_API
-  assert(shared_buf.capacity() >= write_start + payload_size);
-#endif
-  // Capacity reserved above, cannot fail
-  (void) shared_buf.resize(write_start + payload_size);
+  shared_buf.resize(write_start + payload_size);
   ProtoWriteBuffer buffer{&shared_buf, write_start};
   encode_fn(msg, buffer PROTO_ENCODE_DEBUG_INIT(&shared_buf));
   return this->send_buffer(ProtoWriteBuffer{&shared_buf}, message_type);
@@ -2277,7 +2210,7 @@ uint16_t APIConnection::encode_to_buffer_slow(uint32_t calculated_size, MessageE
                                               APIConnection *conn, uint32_t remaining_size) {
   return encode_to_buffer(calculated_size, encode_fn, msg, conn, remaining_size);
 }
-bool APIConnection::send_buffer(ProtoWriteBuffer buffer, uint16_t message_type) {
+bool APIConnection::send_buffer(ProtoWriteBuffer buffer, uint8_t message_type) {
   const bool is_log_message = (message_type == SubscribeLogsResponse::MESSAGE_TYPE);
 
   if (!this->try_to_clear_buffer(!is_log_message)) {
@@ -2301,42 +2234,30 @@ void APIConnection::on_no_setup_connection() {
   this->on_fatal_error();
   this->log_client_(ESPHOME_LOG_LEVEL_DEBUG, LOG_STR("no connection setup"));
 }
-void APIConnection::fatal_out_of_memory_() {
-  this->fatal_error_with_log_(LOG_STR("Out of memory"), APIError::OUT_OF_MEMORY);
-}
 void APIConnection::on_fatal_error() {
   // Don't close socket here - keep it open so getpeername() works for logging
   // Socket will be closed when client is removed from the list in APIServer::loop()
   this->flags_.remove = true;
 }
 
-bool APIConnection::schedule_message_front_(EntityBase *entity, uint16_t message_type, uint8_t estimated_size) {
+bool APIConnection::schedule_message_front_(EntityBase *entity, uint8_t message_type, uint8_t estimated_size) {
   this->deferred_batch_.add_item_front(entity, message_type, estimated_size);
   return this->schedule_batch_();
 }
 
-bool APIConnection::send_message_smart_(EntityBase *entity, uint16_t message_type, uint8_t estimated_size,
+bool APIConnection::send_message_smart_(EntityBase *entity, uint8_t message_type, uint8_t estimated_size,
                                         uint8_t aux_data_index) {
   if (this->should_send_immediately_(message_type) && this->helper_->can_write_without_blocking()) {
-    // No local for the shared buffer here: keeping it live across
-    // dispatch_message_ costs a register and spills message_type into the
-    // batching path's dedup loop (measured on x86 GCC -Os)
-    if (!this->prepare_first_message_buffer(estimated_size)) [[unlikely]] {
-      this->fatal_out_of_memory_();
-      return false;
-    }
+    auto &shared_buf = this->parent_->get_shared_buffer_ref();
+    this->prepare_first_message_buffer(shared_buf, estimated_size);
     DeferredBatch::BatchItem item{entity, message_type, estimated_size, aux_data_index};
     if (this->dispatch_message_(item, MAX_BATCH_PACKET_SIZE, true) &&
-        this->send_buffer(ProtoWriteBuffer{&this->parent_->get_shared_buffer_ref()}, message_type)) {
+        this->send_buffer(ProtoWriteBuffer{&shared_buf}, message_type)) {
 #ifdef HAS_PROTO_MESSAGE_DUMP
       this->log_batch_item_(item);
 #endif
       return true;
     }
-    // An OOM during the immediate attempt marks the connection for removal;
-    // don't queue more work (schedule_message_'s push_back may allocate again)
-    if (this->flags_.remove) [[unlikely]]
-      return false;
   }
   return this->schedule_message_(entity, message_type, estimated_size, aux_data_index);
 }
@@ -2386,11 +2307,7 @@ void APIConnection::process_batch_() {
     total_estimated_size = MAX_BATCH_PACKET_SIZE;
   }
 
-  if (!this->prepare_first_message_buffer(header_padding, total_estimated_size)) [[unlikely]] {
-    this->fatal_out_of_memory_();
-    this->clear_batch_();
-    return;
-  }
+  this->prepare_first_message_buffer(shared_buf, header_padding, total_estimated_size);
 
   // Fast path for single message - buffer already allocated above
   if (num_items == 1) {
@@ -2405,11 +2322,8 @@ void APIConnection::process_batch_() {
 #endif
       this->clear_batch_();
     } else if (payload_size == 0) {
-      // payload_size == 0 with remove set means encoding hit OOM and the
-      // connection is being dropped; warn only for a genuinely oversized message
-      if (!this->flags_.remove) {
-        ESP_LOGW(TAG, "Message too large to send: type=%u", item.message_type);
-      }
+      // Message too large to fit in available space
+      ESP_LOGW(TAG, "Message too large to send: type=%u", item.message_type);
       this->clear_batch_();
     }
     return;
@@ -2472,10 +2386,8 @@ void APIConnection::process_batch_multi_(APIBuffer &shared_buf, size_t num_items
 
   if (items_processed > 0) {
     // Add footer space for the last message (for Noise protocol MAC)
-    if (footer_size > 0 && !shared_buf.resize(shared_buf.size() + footer_size)) [[unlikely]] {
-      this->fatal_out_of_memory_();
-      this->clear_batch_();
-      return;
+    if (footer_size > 0) {
+      shared_buf.resize(shared_buf.size() + footer_size);
     }
 
     // Send all collected messages

esphome/components/api/api_connection.h

@@ -244,7 +244,6 @@ class APIConnection final : public APIServerConnectionBase {
   void on_serial_proxy_set_modem_pins_request(const SerialProxySetModemPinsRequest &msg);
   void on_serial_proxy_get_modem_pins_request(const SerialProxyGetModemPinsRequest &msg);
   void on_serial_proxy_request(const SerialProxyRequest &msg);
-  void on_serial_proxy_set_mode_request(const SerialProxySetModeRequest &msg);
   void send_serial_proxy_data(const SerialProxyDataReceived &msg);
 #endif
 
@@ -327,10 +326,8 @@ class APIConnection final : public APIServerConnectionBase {
   bool is_marked_for_removal() const { return this->flags_.remove; }
   uint8_t get_log_subscription_level() const { return this->flags_.log_subscription; }
 
-  // Get client API version for feature detection.
-  // Stored versions saturate at 255 (see send_hello_response_), so requesting
-  // a minimum above that can never match.
-  bool client_supports_api_version(uint8_t major, uint8_t minor) const {
+  // Get client API version for feature detection
+  bool client_supports_api_version(uint16_t major, uint16_t minor) const {
     return this->client_api_version_major_ > major ||
            (this->client_api_version_major_ == major && this->client_api_version_minor_ >= minor);
   }
@@ -353,13 +350,22 @@ class APIConnection final : public APIServerConnectionBase {
     }
   }
 
-  /// Clear the shared write buffer and reserve space for the first message.
-  /// Returns false if the allocation fails (out of memory).
-  /// Defined in api_connection_buffer.h (needs APIServer complete).
-  [[nodiscard]] bool prepare_first_message_buffer(size_t header_padding, size_t total_size);
+  void prepare_first_message_buffer(APIBuffer &shared_buf, size_t header_padding, size_t total_size) {
+    shared_buf.clear();
+    // Reserve space for header padding + message + footer
+    // - Header padding: space for protocol headers (7 bytes for Noise, 6 for Plaintext)
+    // - Footer: space for MAC (16 bytes for Noise, 0 for Plaintext)
+    // Reserve full size but only set initial size to header padding
+    // so message encoding starts at the correct position
+    shared_buf.reserve_and_resize(total_size, header_padding);
+  }
 
   // Convenience overload - computes frame overhead internally
-  [[nodiscard]] bool prepare_first_message_buffer(size_t payload_size);
+  void prepare_first_message_buffer(APIBuffer &shared_buf, size_t payload_size) {
+    const uint8_t header_padding = this->helper_->frame_header_padding();
+    const uint8_t footer_size = this->helper_->frame_footer_size();
+    this->prepare_first_message_buffer(shared_buf, header_padding, payload_size + header_padding + footer_size);
+  }
 
   bool try_to_clear_buffer(bool log_out_of_space) {
     if (this->flags_.remove)
@@ -368,7 +374,7 @@ class APIConnection final : public APIServerConnectionBase {
       return true;
     return this->try_to_clear_buffer_slow_(log_out_of_space);
   }
-  bool send_buffer(ProtoWriteBuffer buffer, uint16_t message_type);
+  bool send_buffer(ProtoWriteBuffer buffer, uint8_t message_type);
 
   const char *get_name() const { return this->helper_->get_client_name(); }
   /// Get peer name (IP address) into caller-provided buffer, returns buf for convenience
@@ -417,7 +423,7 @@ class APIConnection final : public APIServerConnectionBase {
   }
 
   // Non-template buffer management for send_message
-  bool send_message_(uint32_t payload_size, uint16_t message_type, MessageEncodeFn encode_fn, const void *msg);
+  bool send_message_(uint32_t payload_size, uint8_t message_type, MessageEncodeFn encode_fn, const void *msg);
 
   // Core batch encoding logic. ALWAYS_INLINE so encode_fn devirtualizes at hot call sites.
   // Defined in api_connection_buffer.h (needs APIServer complete).
@@ -658,9 +664,10 @@ class APIConnection final : public APIServerConnectionBase {
 
     struct BatchItem {
       EntityBase *entity;                       // 4 bytes - Entity pointer
-      uint16_t message_type;                    // 2 bytes - Message type for protocol and dispatch
+      uint8_t message_type;                     // 1 byte - Message type for protocol and dispatch
       uint8_t estimated_size;                   // 1 byte - Estimated message size (max 255 bytes)
       uint8_t aux_data_index{AUX_DATA_UNUSED};  // 1 byte - For events: index into entity's event_types
+      // 1 byte padding
     };
 
     std::vector<BatchItem> items;
@@ -670,7 +677,7 @@ class APIConnection final : public APIServerConnectionBase {
     // connections that do, buffers are released after initial sync anyway
 
     // Add item to the batch (with deduplication)
-    void add_item(EntityBase *entity, uint16_t message_type, uint8_t estimated_size,
+    void add_item(EntityBase *entity, uint8_t message_type, uint8_t estimated_size,
                   uint8_t aux_data_index = AUX_DATA_UNUSED) {
       // Dedup: O(n) scan but optimized for RAM over performance
       // Skip deduplication for events - they are edge-triggered, every occurrence matters
@@ -686,7 +693,7 @@ class APIConnection final : public APIServerConnectionBase {
       this->items.push_back({entity, message_type, estimated_size, aux_data_index});
     }
     // Add item to the front of the batch (for high priority messages like ping)
-    void add_item_front(EntityBase *entity, uint16_t message_type, uint8_t estimated_size) {
+    void add_item_front(EntityBase *entity, uint8_t message_type, uint8_t estimated_size) {
       // Swap to front avoids expensive vector::insert which shifts all elements
       this->items.push_back({entity, message_type, estimated_size, AUX_DATA_UNUSED});
       if (this->items.size() > 1) {
@@ -751,15 +758,13 @@ class APIConnection final : public APIServerConnectionBase {
 #endif
   } flags_{};  // 2 bytes total
 
-  // 2-byte type immediately after flags_ (no padding between them)
-  uint16_t batch_message_type_{0};  // Current message type during batch encoding
+  // 2-byte types immediately after flags_ (no padding between them)
+  uint16_t client_api_version_major_{0};
+  uint16_t client_api_version_minor_{0};
   // 1-byte types to fill remaining space before next 4-byte boundary
-  // Client API versions are clamped to 255 on receive (see send_hello_response_)
-  uint8_t client_api_version_major_{0};
-  uint8_t client_api_version_minor_{0};
   ActiveIterator active_iterator_{ActiveIterator::NONE};
-  // Total: 2 (flags) + 2 + 1 + 1 + 1 + 1 (batch_header_size_ below) = 8 bytes,
-  // aligned to 4-byte boundary
+  uint8_t batch_message_type_{0};  // Current message type during batch encoding
+  // Total: 2 (flags) + 2 + 2 + 1 + 1 = 8 bytes, aligned to 4-byte boundary
 
   // Actual header size used by encode_to_buffer for the current message.
   // Read by process_batch_multi_ to pass into MessageInfo.
@@ -808,7 +813,7 @@ class APIConnection final : public APIServerConnectionBase {
   // 2. It's an EventResponse (events are edge-triggered - every occurrence matters)
   // 3. OR: User has opted into immediate sending (should_try_send_immediately = true
   //    AND batch_delay = 0)
-  inline bool should_send_immediately_(uint16_t message_type) const {
+  inline bool should_send_immediately_(uint8_t message_type) const {
     return (
 #ifdef USE_UPDATE
         message_type == UpdateStateResponse::MESSAGE_TYPE ||
@@ -822,11 +827,11 @@ class APIConnection final : public APIServerConnectionBase {
   // Helper method to send a message either immediately or via batching
   // Tries immediate send if should_send_immediately_() returns true and buffer has space
   // Falls back to batching if immediate send fails or isn't applicable
-  bool send_message_smart_(EntityBase *entity, uint16_t message_type, uint8_t estimated_size,
+  bool send_message_smart_(EntityBase *entity, uint8_t message_type, uint8_t estimated_size,
                            uint8_t aux_data_index = DeferredBatch::AUX_DATA_UNUSED);
 
   // Helper function to schedule a deferred message with known message type
-  bool schedule_message_(EntityBase *entity, uint16_t message_type, uint8_t estimated_size,
+  bool schedule_message_(EntityBase *entity, uint8_t message_type, uint8_t estimated_size,
                          uint8_t aux_data_index = DeferredBatch::AUX_DATA_UNUSED) {
     this->deferred_batch_.add_item(entity, message_type, estimated_size, aux_data_index);
     return this->schedule_batch_();
@@ -834,7 +839,7 @@ class APIConnection final : public APIServerConnectionBase {
 
   // Helper function to schedule a high priority message at the front of the batch
   // Out-of-line: callers (on_shutdown, check_keepalive_) are cold paths
-  bool schedule_message_front_(EntityBase *entity, uint16_t message_type, uint8_t estimated_size);
+  bool schedule_message_front_(EntityBase *entity, uint8_t message_type, uint8_t estimated_size);
 
   // Helper function to log client messages with name and peername
   void log_client_(int level, const LogString *message);
@@ -845,9 +850,6 @@ class APIConnection final : public APIServerConnectionBase {
     this->on_fatal_error();
     this->log_warning_(message, err);
   }
-  // Shared cold path for buffer allocation failures — noinline keeps the
-  // OOM handling out of the hot send paths
-  void __attribute__((noinline)) fatal_out_of_memory_();
 };
 
 }  // namespace esphome::api

esphome/components/api/api_connection_buffer.h

@@ -3,8 +3,8 @@
 #include "esphome/core/defines.h"
 #ifdef USE_API
 
-// Inline APIConnection members that need APIServer complete. Include this
-// instead of api_connection.h when calling them.
+// Inline APIConnection methods that need APIServer complete. Include this
+// instead of api_connection.h when calling encode_to_buffer or get_batch_delay_ms_.
 
 #include "api_connection.h"
 #include "api_server.h"
@@ -41,10 +41,7 @@ inline uint16_t ESPHOME_ALWAYS_INLINE APIConnection::encode_to_buffer(uint32_t c
     return 0;
 
   auto &shared_buf = conn->parent_->get_shared_buffer_ref();
-  if (!shared_buf.resize(shared_buf.size() + to_add)) [[unlikely]] {
-    conn->fatal_out_of_memory_();
-    return 0;
-  }
+  shared_buf.resize(shared_buf.size() + to_add);
   ProtoWriteBuffer buffer{&shared_buf, shared_buf.size() - calculated_size};
   encode_fn(msg, buffer PROTO_ENCODE_DEBUG_INIT(&shared_buf));
 
@@ -53,22 +50,5 @@ inline uint16_t ESPHOME_ALWAYS_INLINE APIConnection::encode_to_buffer(uint32_t c
 
 inline uint32_t APIConnection::get_batch_delay_ms_() const { return this->parent_->get_batch_delay(); }
 
-inline bool APIConnection::prepare_first_message_buffer(size_t header_padding, size_t total_size) {
-  auto &shared_buf = this->parent_->get_shared_buffer_ref();
-  shared_buf.clear();
-  // Reserve space for header padding + message + footer
-  // - Header padding: space for protocol headers (7 bytes for Noise, 6 for Plaintext)
-  // - Footer: space for MAC (16 bytes for Noise, 0 for Plaintext)
-  // Reserve full size but only set initial size to header padding
-  // so message encoding starts at the correct position
-  return shared_buf.reserve_and_resize(total_size, header_padding);
-}
-
-inline bool APIConnection::prepare_first_message_buffer(size_t payload_size) {
-  const uint8_t header_padding = this->helper_->frame_header_padding();
-  const uint8_t footer_size = this->helper_->frame_footer_size();
-  return this->prepare_first_message_buffer(header_padding, payload_size + header_padding + footer_size);
-}
-
 }  // namespace esphome::api
 #endif

esphome/components/api/api_frame_helper.cpp

@@ -171,8 +171,8 @@ APIError APIFrameHelper::write_raw_iov_(const struct iovec *iov, int iovcnt, uin
     return APIError::OK;
 
   // Queue unsent data into overflow buffer
-  if (!this->overflow_buf_.enqueue_iov(iov, iovcnt, total_write_len, sent)) {
-    HELPER_LOG("Overflow buffer full or out of memory, dropping connection");
+  if (!this->overflow_buf_.enqueue_iov(iov, iovcnt, total_write_len, static_cast<uint16_t>(sent))) {
+    HELPER_LOG("Overflow buffer full, dropping connection");
     this->state_ = State::FAILED;
     return APIError::SOCKET_WRITE_FAILED;
   }

esphome/components/api/api_frame_helper.h

@@ -49,16 +49,16 @@ struct ReadPacketBuffer {
 };
 
 // Packed message info structure to minimize memory usage
-// message_type matches the wire formats: noise carries a fixed 16-bit type
-// field, plaintext a type varint. The proto codegen caps message IDs at 16383
-// so the plaintext type varint fits the 2 bytes budgeted in HEADER_PADDING.
+// Note: message_type is uint8_t — all current protobuf message types fit in 8 bits.
+// The noise wire format encodes types as 16-bit, but the high byte is always 0.
+// If message types ever exceed 255, this and encrypt_noise_message_ must be updated.
 struct MessageInfo {
   uint16_t offset;        // Offset in buffer where message starts
   uint16_t payload_size;  // Size of the message payload
-  uint16_t message_type;  // Message type (0-16383)
+  uint8_t message_type;   // Message type (0-255)
   uint8_t header_size;    // Actual header size used (avoids recomputation in write path)
 
-  MessageInfo(uint16_t type, uint16_t off, uint16_t size, uint8_t hdr)
+  MessageInfo(uint8_t type, uint16_t off, uint16_t size, uint8_t hdr)
       : offset(off), payload_size(size), message_type(type), header_size(hdr) {}
 };
 
@@ -173,7 +173,7 @@ class APIFrameHelper {
   }
   // Write a single protobuf message - the hot path (87-100% of all writes).
   // Caller must ensure state is DATA before calling.
-  virtual APIError write_protobuf_packet(uint16_t type, ProtoWriteBuffer buffer) = 0;
+  virtual APIError write_protobuf_packet(uint8_t type, ProtoWriteBuffer buffer) = 0;
   // Write multiple protobuf messages in a single batched operation.
   // Caller must ensure state is DATA and messages is not empty.
   // messages contains (message_type, offset, length) for each message in the buffer.
@@ -187,15 +187,15 @@ class APIFrameHelper {
   // Distinguishes protocols via frame_footer_size_ (noise always has a non-zero MAC
   // footer, plaintext has footer=0). If a protocol with a plaintext footer is ever
   // added, this should become a virtual method.
-  uint8_t frame_header_size(uint16_t payload_size, uint16_t message_type) const {
+  uint8_t frame_header_size(uint16_t payload_size, uint8_t message_type) const {
 #if defined(USE_API_NOISE) && defined(USE_API_PLAINTEXT)
     return this->frame_footer_size_
                ? this->frame_header_padding_
-               : static_cast<uint8_t>(1 + ProtoSize::varint16(payload_size) + ProtoSize::varint16(message_type));
+               : static_cast<uint8_t>(1 + ProtoSize::varint16(payload_size) + ProtoSize::varint8(message_type));
 #elif defined(USE_API_NOISE)
     return this->frame_header_padding_;
 #else  // USE_API_PLAINTEXT only
-    return static_cast<uint8_t>(1 + ProtoSize::varint16(payload_size) + ProtoSize::varint16(message_type));
+    return static_cast<uint8_t>(1 + ProtoSize::varint16(payload_size) + ProtoSize::varint8(message_type));
 #endif
   }
   // Get the frame footer size required by this protocol
@@ -219,10 +219,7 @@ class APIFrameHelper {
     if (this->rx_buf_len_ == 0) {
       this->rx_buf_.release();
     }
-    this->release_overflow_buffer();
   }
-  // Free the send backlog storage once it has drained
-  void release_overflow_buffer() { this->overflow_buf_.release(); }
 
  protected:
   // Drain backlogged overflow data to the socket and handle errors.

esphome/components/api/api_frame_helper_noise.cpp

@@ -67,15 +67,12 @@ APIError APINoiseFrameHelper::init() {
   }
 
   // init prologue
-  uint8_t *dst = prologue_.append(PROLOGUE_INIT_LEN);
-  if (dst == nullptr) [[unlikely]] {
-    state_ = State::FAILED;
-    return APIError::OUT_OF_MEMORY;
-  }
+  size_t old_size = prologue_.size();
+  prologue_.resize(old_size + PROLOGUE_INIT_LEN);
 #ifdef USE_ESP8266
-  memcpy_P(dst, PROLOGUE_INIT, PROLOGUE_INIT_LEN);
+  memcpy_P(prologue_.data() + old_size, PROLOGUE_INIT, PROLOGUE_INIT_LEN);
 #else
-  std::memcpy(dst, PROLOGUE_INIT, PROLOGUE_INIT_LEN);
+  std::memcpy(prologue_.data() + old_size, PROLOGUE_INIT, PROLOGUE_INIT_LEN);
 #endif
 
   state_ = State::CLIENT_HELLO;
@@ -205,10 +202,7 @@ APIError APINoiseFrameHelper::try_read_frame_() {
   // During handshake, rx_buf_.size() is used in prologue construction, so
   // the buffer must be exactly msg_size to avoid prologue mismatch.)
   uint16_t alloc_size = msg_size + (is_data ? RX_BUF_NULL_TERMINATOR : 0);
-  if (!this->rx_buf_.resize(alloc_size)) [[unlikely]] {
-    state_ = State::FAILED;
-    return APIError::OUT_OF_MEMORY;
-  }
+  this->rx_buf_.resize(alloc_size);
 
   if (rx_buf_len_ < msg_size) {
     // more data to read
@@ -272,17 +266,14 @@ APIError APINoiseFrameHelper::state_action_client_hello_() {
     return handle_handshake_frame_error_(aerr);
   }
   // ignore contents, may be used in future for flags
-  // Append 2 size bytes + frame data to the prologue
+  // Resize for: existing prologue + 2 size bytes + frame data
+  size_t old_size = this->prologue_.size();
   size_t rx_size = this->rx_buf_.size();
-  uint8_t *dst = this->prologue_.append(2 + rx_size);
-  if (dst == nullptr) [[unlikely]] {
-    state_ = State::FAILED;
-    return APIError::OUT_OF_MEMORY;
-  }
-  dst[0] = (uint8_t) (rx_size >> 8);
-  dst[1] = (uint8_t) rx_size;
+  this->prologue_.resize(old_size + 2 + rx_size);
+  this->prologue_[old_size] = (uint8_t) (rx_size >> 8);
+  this->prologue_[old_size + 1] = (uint8_t) rx_size;
   if (rx_size > 0) {
-    std::memcpy(dst + 2, this->rx_buf_.data(), rx_size);
+    std::memcpy(this->prologue_.data() + old_size + 2, this->rx_buf_.data(), rx_size);
   }
 
   state_ = State::SERVER_HELLO;
@@ -451,7 +442,7 @@ APIError APINoiseFrameHelper::read_packet(ReadPacketBuffer *buffer) {
 }
 // Encrypt a single noise message in place and return the encrypted frame length.
 // Returns APIError::OK on success.
-APIError APINoiseFrameHelper::encrypt_noise_message_(uint8_t *buf_start, uint16_t payload_size, uint16_t message_type,
+APIError APINoiseFrameHelper::encrypt_noise_message_(uint8_t *buf_start, uint16_t payload_size, uint8_t message_type,
                                                      uint16_t &encrypted_len_out) {
   // The noise frame header is written after encryption, when the size is known
 
@@ -481,20 +472,18 @@ APIError APINoiseFrameHelper::encrypt_noise_message_(uint8_t *buf_start, uint16_
   return APIError::OK;
 }
 
-APIError APINoiseFrameHelper::write_protobuf_packet(uint16_t type, ProtoWriteBuffer buffer) {
+APIError APINoiseFrameHelper::write_protobuf_packet(uint8_t type, ProtoWriteBuffer buffer) {
 #ifdef ESPHOME_DEBUG_API
   assert(this->state_ == State::DATA);
 #endif
 
-  APIBuffer *buf = buffer.get_buffer();
   // Resize buffer to include footer space for Noise MAC
-  if (this->frame_footer_size_ && !buf->resize(buf->size() + this->frame_footer_size_)) [[unlikely]] {
-    state_ = State::FAILED;
-    return APIError::OUT_OF_MEMORY;
-  }
+  if (this->frame_footer_size_)
+    buffer.get_buffer()->resize(buffer.get_buffer()->size() + this->frame_footer_size_);
 
-  uint16_t payload_size = static_cast<uint16_t>(buf->size() - HEADER_PADDING - this->frame_footer_size_);
-  uint8_t *buf_start = buf->data();
+  uint16_t payload_size =
+      static_cast<uint16_t>(buffer.get_buffer()->size() - HEADER_PADDING - this->frame_footer_size_);
+  uint8_t *buf_start = buffer.get_buffer()->data();
   uint16_t encrypted_len;
   APIError aerr = this->encrypt_noise_message_(buf_start, payload_size, type, encrypted_len);
   if (aerr != APIError::OK)
@@ -548,7 +537,7 @@ APIError APINoiseFrameHelper::write_frame_(const uint8_t *data, uint16_t len) {
  * @return 0 on success, -1 on error (check errno)
  */
 APIError APINoiseFrameHelper::init_handshake_() {
-  int err = this->handshake_.init(this->ctx_, prologue_.data(), prologue_.size());
+  int err = this->handshake_.init(this->ctx_.get_psk(), prologue_.data(), prologue_.size());
   APIError aerr = handle_noise_error_(err, LOG_STR("noise_handshake_init"), APIError::HANDSHAKESTATE_SETUP_FAILED);
   if (aerr != APIError::OK)
     return aerr;

esphome/components/api/api_frame_helper_noise.h

@@ -31,7 +31,7 @@ class APINoiseFrameHelper final : public APIFrameHelper {
 #endif
   APIError loop() override;
   APIError read_packet(ReadPacketBuffer *buffer) override;
-  APIError write_protobuf_packet(uint16_t type, ProtoWriteBuffer buffer) override;
+  APIError write_protobuf_packet(uint8_t type, ProtoWriteBuffer buffer) override;
   APIError write_protobuf_messages(ProtoWriteBuffer buffer, std::span<const MessageInfo> messages) override;
 
  protected:
@@ -44,7 +44,7 @@ class APINoiseFrameHelper final : public APIFrameHelper {
   APIError state_action_handshake_write_();
   APIError try_read_frame_();
   APIError write_frame_(const uint8_t *data, uint16_t len);
-  APIError encrypt_noise_message_(uint8_t *buf_start, uint16_t payload_size, uint16_t message_type,
+  APIError encrypt_noise_message_(uint8_t *buf_start, uint16_t payload_size, uint8_t message_type,
                                   uint16_t &encrypted_len_out);
   APIError init_handshake_();
   APIError check_handshake_finished_();

esphome/components/api/api_frame_helper_plaintext.cpp

@@ -5,7 +5,6 @@
 #include "esphome/core/hal.h"
 #include "esphome/core/helpers.h"
 #include "esphome/core/log.h"
-#include "api_pb2.h"
 #include "proto.h"
 #include <cstring>
 #include <cinttypes>
@@ -172,10 +171,7 @@ APIError APIPlaintextFrameHelper::try_read_frame_() {
 
   // Reserve space for body (+ null terminator so protobuf StringRef fields
   // can be safely null-terminated in-place after decode)
-  if (!this->rx_buf_.resize(this->rx_header_parsed_len_ + RX_BUF_NULL_TERMINATOR)) [[unlikely]] {
-    state_ = State::FAILED;
-    return APIError::OUT_OF_MEMORY;
-  }
+  this->rx_buf_.resize(this->rx_header_parsed_len_ + RX_BUF_NULL_TERMINATOR);
 
   if (rx_buf_len_ < rx_header_parsed_len_) {
     // more data to read
@@ -256,21 +252,24 @@ ESPHOME_ALWAYS_INLINE static inline void encode_varint_16(uint16_t value, uint8_
   *p = static_cast<uint8_t>(value);
 }
 
-// The generator rejects message IDs above MAX_MESSAGE_TYPE, so the type varint
-// can never outgrow the 2 bytes HEADER_PADDING budgets for it. Without this
-// bound, write_plaintext_header's header_offset would underflow for the first
-// message in a batch and the header write would land outside the buffer.
-static_assert(1 + 3 + ProtoSize::varint16(MAX_MESSAGE_TYPE) <= APIPlaintextFrameHelper::HEADER_PADDING,
-              "HEADER_PADDING cannot fit the type varint of the largest message ID");
+// Encode an 8-bit varint (1-2 bytes) using pre-computed length.
+ESPHOME_ALWAYS_INLINE static inline void encode_varint_8(uint8_t value, uint8_t varint_len, uint8_t *p) {
+  if (varint_len == 2) {
+    *p++ = static_cast<uint8_t>(value | 0x80);
+    *p = static_cast<uint8_t>(value >> 7);
+  } else {
+    *p = value;
+  }
+}
 
 // Write plaintext header into pre-allocated padding before payload.
 // padding_size: bytes reserved before payload (HEADER_PADDING for first/single msg,
 //               actual header size for contiguous batch messages).
 // Returns the total header length (indicator + varints).
 ESPHOME_ALWAYS_INLINE static inline uint8_t write_plaintext_header(uint8_t *buf_start, uint16_t payload_size,
-                                                                   uint16_t message_type, uint8_t padding_size) {
+                                                                   uint8_t message_type, uint8_t padding_size) {
   uint8_t size_varint_len = ProtoSize::varint16(payload_size);
-  uint8_t type_varint_len = ProtoSize::varint16(message_type);
+  uint8_t type_varint_len = ProtoSize::varint8(message_type);
   uint8_t total_header_len = 1 + size_varint_len + type_varint_len;
 
   // The header is right-justified within the padding so it sits immediately before payload.
@@ -293,12 +292,12 @@ ESPHOME_ALWAYS_INLINE static inline uint8_t write_plaintext_header(uint8_t *buf_
 
   // Encode varints directly into buffer using pre-computed lengths
   encode_varint_16(payload_size, size_varint_len, buf_start + header_offset + 1);
-  encode_varint_16(message_type, type_varint_len, buf_start + header_offset + 1 + size_varint_len);
+  encode_varint_8(message_type, type_varint_len, buf_start + header_offset + 1 + size_varint_len);
 
   return total_header_len;
 }
 
-APIError APIPlaintextFrameHelper::write_protobuf_packet(uint16_t type, ProtoWriteBuffer buffer) {
+APIError APIPlaintextFrameHelper::write_protobuf_packet(uint8_t type, ProtoWriteBuffer buffer) {
 #ifdef ESPHOME_DEBUG_API
   assert(this->state_ == State::DATA);
 #endif

esphome/components/api/api_frame_helper_plaintext.h

@@ -10,8 +10,7 @@ class APIPlaintextFrameHelper final : public APIFrameHelper {
   // Plaintext header structure (worst case):
   // Pos 0: indicator (0x00)
   // Pos 1-3: payload size varint (up to 3 bytes)
-  // Pos 4-5: message type varint (up to 2 bytes; covers message IDs up to
-  //          16383, enforced by the proto codegen)
+  // Pos 4-5: message type varint (up to 2 bytes)
   // Pos 6+: actual payload data
   static constexpr uint8_t HEADER_PADDING = 1 + 3 + 2;  // indicator + size varint + type varint
 
@@ -22,7 +21,7 @@ class APIPlaintextFrameHelper final : public APIFrameHelper {
   APIError init() override;
   APIError loop() override;
   APIError read_packet(ReadPacketBuffer *buffer) override;
-  APIError write_protobuf_packet(uint16_t type, ProtoWriteBuffer buffer) override;
+  APIError write_protobuf_packet(uint8_t type, ProtoWriteBuffer buffer) override;
   APIError write_protobuf_messages(ProtoWriteBuffer buffer, std::span<const MessageInfo> messages) override;
 #ifdef USE_API_NOISE
   // After try_read_frame_ returned PROTOCOL_SWITCH_TO_NOISE: copy out the

esphome/components/api/api_overflow_buffer.cpp

@@ -4,88 +4,83 @@
 
 namespace esphome::api {
 
+APIOverflowBuffer::~APIOverflowBuffer() {
+  for (auto *entry : this->queue_) {
+    if (entry != nullptr)
+      Entry::destroy(entry);
+  }
+}
+
 ssize_t APIOverflowBuffer::try_drain(socket::Socket *socket) {
-  // Nested call from inside socket->write(); see draining_
+  // socket->write() can re-enter this function: a log message emitted from an
+  // lwip callback during the write goes out over the API and lands back in the
+  // frame helper's write/drain path. If a nested drain ran here it would send
+  // and free the entry the outer drain is still holding, causing a double free.
+  // Report "no progress" instead; the outer drain keeps draining, and the
+  // nested send is enqueued behind the existing backlog.
   if (this->draining_)
     return 0;
 
+  // RAII so the flag is cleared on every return path
   struct DrainGuard {
-    APIOverflowBuffer &owner;
-    ~DrainGuard() { this->owner.draining_ = false; }
-  } guard{*this};
-  this->draining_ = true;
+    explicit DrainGuard(bool &flag) : flag_(flag) { flag_ = true; }
+    ~DrainGuard() { this->flag_ = false; }
+    bool &flag_;
+  } guard(this->draining_);
 
   while (this->count_ > 0) {
-    uint8_t *msg = this->buf_.data() + this->head_;
-    size_t len = msg[0] | (msg[1] << 8);
+    Entry *front = this->queue_[this->head_];
 
-    ssize_t sent = socket->write(msg + LEN_PREFIX, len);
-    if (sent <= 0)
-      return sent;
-    if (static_cast<size_t>(sent) < len) {
-      // Step past the sent bytes and rewrite the prefix there; it lands on bytes already sent
-      this->head_ += sent;
-      len -= sent;
-      msg += sent;
-      msg[0] = len;
-      msg[1] = len >> 8;
+    ssize_t sent = socket->write(front->current_data(), front->remaining());
+
+    if (sent <= 0) {
+      // -1 = error (caller checks errno for EWOULDBLOCK vs hard error)
+      // 0 = nothing sent (treat as no progress)
       return sent;
     }
-    this->head_ += LEN_PREFIX + len;
+
+    if (static_cast<uint16_t>(sent) < front->remaining()) {
+      // Partially sent, update offset and stop
+      front->offset += static_cast<uint16_t>(sent);
+      return sent;
+    }
+
+    // Entry fully sent — unlink it before freeing so a freed pointer is never
+    // reachable from the queue
+    this->queue_[this->head_] = nullptr;
+    this->head_ = (this->head_ + 1) % API_MAX_SEND_QUEUE;
     this->count_--;
+    Entry::destroy(front);
   }
 
-  this->head_ = 0;
-  if (this->release_when_drained_) {
-    this->release_when_drained_ = false;
-    this->buf_.release();
-  } else {
-    this->buf_.clear();
-  }
-  return 0;
+  return 0;  // All drained
 }
 
-bool APIOverflowBuffer::enqueue_iov(const struct iovec *iov, int iovcnt, size_t total_len, size_t skip) {
+bool APIOverflowBuffer::enqueue_iov(const struct iovec *iov, int iovcnt, uint16_t total_len, uint16_t skip) {
   if (this->count_ >= API_MAX_SEND_QUEUE)
     return false;
 
-  const size_t new_len = total_len - skip;
-  const size_t new_bytes = LEN_PREFIX + new_len;
-  const size_t live = this->buf_.size() - this->head_;
-  // A lone message is only bound by the buffer; refusing it would just drop the connection
-  if (live + new_bytes > (this->count_ > 0 ? MAX_BYTES : MAX_LONE_BYTES))
-    return false;
+  uint16_t buffer_size = total_len - skip;
+  // NOLINTNEXTLINE(cppcoreguidelines-owning-memory)
+  auto *entry = new Entry{new uint8_t[buffer_size], buffer_size, 0};
+  this->queue_[this->tail_] = entry;
 
-  if (this->buf_.size() + new_bytes > this->buf_.capacity()) {
-    // Storage would move under an outer drain's write()
-    if (this->draining_)
-      return false;
-    if (this->head_ > 0) {
-      // Reclaim the sent prefix before growing
-      this->buf_.drop_front(this->head_);
-      this->head_ = 0;
-    }
-    if (!this->buf_.reserve(reserve_for(live + new_bytes)))
-      return false;
-  }
+  uint16_t to_skip = skip;
+  uint16_t write_pos = 0;
 
-  uint8_t *dst = this->buf_.append(new_bytes);
-  if (dst == nullptr)
-    return false;
-  dst[0] = new_len;
-  dst[1] = new_len >> 8;
-  dst += LEN_PREFIX;
-  for (const struct iovec *end = iov + iovcnt; iov != end; iov++) {
-    if (skip >= iov->iov_len) {
-      skip -= iov->iov_len;
+  for (int i = 0; i < iovcnt; i++) {
+    if (to_skip >= iov[i].iov_len) {
+      to_skip -= static_cast<uint16_t>(iov[i].iov_len);
     } else {
-      const size_t len = iov->iov_len - skip;
-      std::memcpy(dst, static_cast<const uint8_t *>(iov->iov_base) + skip, len);
-      dst += len;
-      skip = 0;
+      const uint8_t *src = reinterpret_cast<uint8_t *>(iov[i].iov_base) + to_skip;
+      uint16_t len = static_cast<uint16_t>(iov[i].iov_len) - to_skip;
+      std::memcpy(entry->data + write_pos, src, len);
+      write_pos += len;
+      to_skip = 0;
     }
   }
 
+  this->tail_ = (this->tail_ + 1) % API_MAX_SEND_QUEUE;
   this->count_++;
   return true;
 }

esphome/components/api/api_overflow_buffer.h

@@ -1,6 +1,5 @@
 #pragma once
-#include <algorithm>
-#include <cstddef>
+#include <array>
 #include <cstdint>
 #include <sys/types.h>
 
@@ -9,57 +8,71 @@
 
 #include "esphome/components/socket/headers.h"
 #include "esphome/components/socket/socket.h"
-#include "api_buffer.h"
+#include "esphome/core/helpers.h"
 
 namespace esphome::api {
 
-/// TCP send backlog, only used when the socket send buffer is full.
-/// One contiguous buffer per connection, allocated on the first stall and
-/// kept at its high-water mark so a lossy link does not churn the heap.
-/// Messages are stored as a 2 byte length prefix plus payload.
-/// API_MAX_SEND_QUEUE bounds queued messages and, at 2 KB per slot, queued
-/// bytes; exceeding either fails the connection.
+/// Circular queue of heap-allocated byte buffers used as a TCP send backlog.
+///
+/// Under normal operation this buffer is **never used** — data goes straight
+/// from the frame helper to the socket.  It only fills when the LWIP TCP
+/// send buffer is full (slow client, congested network, heavy logging).
+/// The queue drains automatically on subsequent write/loop calls once the
+/// socket becomes writable again.
+///
+/// Capacity is compile-time-fixed via API_MAX_SEND_QUEUE (set from Python
+/// config).  If the queue fills completely the connection is marked failed.
 class APIOverflowBuffer {
  public:
+  /// A single heap-allocated send-backlog entry.
+  /// Lifetime is manually managed — see destroy().
+  struct Entry {
+    uint8_t *data;
+    uint16_t size;    // Total size of the buffer
+    uint16_t offset;  // Current send offset within the buffer
+
+    uint16_t remaining() const { return this->size - this->offset; }
+    const uint8_t *current_data() const { return this->data + this->offset; }
+
+    /// Free this entry and its data buffer.
+    static ESPHOME_ALWAYS_INLINE void destroy(Entry *entry) {
+      delete[] entry->data;
+      delete entry;  // NOLINT(cppcoreguidelines-owning-memory)
+    }
+  };
+
+  ~APIOverflowBuffer();
+
   /// True when no backlogged data is waiting.
   bool empty() const { return this->count_ == 0; }
 
-  /// Drain queued messages to the socket.
-  /// Returns bytes written, 0 for a re-entrant call, -1 on error (check errno
-  /// for EWOULDBLOCK); callers only need to act on -1.
+  /// True when the queue has no room for another entry.
+  bool full() const { return this->count_ >= API_MAX_SEND_QUEUE; }
+
+  /// Number of entries currently queued.
+  uint8_t count() const { return this->count_; }
+
+  /// Try to drain queued data to the socket.
+  /// Returns bytes-written > 0 on success/partial, 0 if all drained or no progress,
+  /// -1 on error (caller must check errno to distinguish EWOULDBLOCK from hard errors).
+  /// Callers only need to act on -1; 0 and positive values both mean "no error".
+  /// Frees entries as they are fully sent.
   ssize_t try_drain(socket::Socket *socket);
 
-  /// Queue iov data from byte offset `skip` as one message.
-  /// Returns false when a limit is hit, allocation fails, or storage would move
-  /// during a drain; the caller should fail the connection.
-  bool enqueue_iov(const struct iovec *iov, int iovcnt, size_t total_len, size_t skip);
-
-  /// Free the retained storage, now if empty, otherwise once it has drained.
-  void release() {
-    if (this->count_ == 0) {
-      this->buf_.release();
-    } else {
-      this->release_when_drained_ = true;
-    }
-  }
+  /// Enqueue unsent IOV data into the backlog.
+  /// Copies iov data starting at byte offset `skip` into a new entry.
+  /// Returns false if the queue is full (caller should fail the connection).
+  bool enqueue_iov(const struct iovec *iov, int iovcnt, uint16_t total_len, uint16_t skip);
 
  protected:
-  static constexpr size_t LEN_PREFIX = 2;
-  static constexpr size_t BYTES_PER_SLOT = 2048;
-  // Reserve in 256 byte steps so a creeping high-water mark settles quickly
-  static constexpr size_t GROW_QUANTUM = 256;
-  // Lone message ceiling, rounded down so reserve_for() never exceeds the buffer limit
-  static constexpr size_t MAX_LONE_BYTES = APIBuffer::MAX_SIZE & ~(GROW_QUANTUM - 1);
-  static constexpr size_t MAX_BYTES = std::min(API_MAX_SEND_QUEUE * BYTES_PER_SLOT, MAX_LONE_BYTES);
-  static constexpr size_t reserve_for(size_t want) { return (want + GROW_QUANTUM - 1) & ~(GROW_QUANTUM - 1); }
-
-  APIBuffer buf_;
-  uint16_t head_{0};  // offset of the front message's length prefix; bytes before it are sent
+  std::array<Entry *, API_MAX_SEND_QUEUE> queue_{};
+  uint8_t head_{0};
+  uint8_t tail_{0};
   uint8_t count_{0};
-  // socket->write() can re-enter the send path (log from an lwip callback):
-  // a nested drain makes no progress and a nested enqueue never moves storage
-  bool draining_ : 1 {false};
-  bool release_when_drained_ : 1 {false};
+  // Guards against re-entrant drains: socket->write() can re-enter the API
+  // send path (e.g. a log message emitted from an lwip callback), and a nested
+  // drain would free the entry the outer drain is still holding.
+  bool draining_{false};
 };
 
 }  // namespace esphome::api

esphome/components/api/api_pb2.cpp

@@ -102,14 +102,12 @@ uint8_t *SerialProxyInfo::encode(ProtoWriteBuffer &buffer PROTO_ENCODE_DEBUG_PAR
   uint8_t *__restrict__ pos = buffer.get_pos();
   ProtoEncode::encode_string(pos PROTO_ENCODE_DEBUG_ARG, 1, this->name);
   ProtoEncode::encode_uint32(pos PROTO_ENCODE_DEBUG_ARG, 2, static_cast<uint32_t>(this->port_type));
-  ProtoEncode::encode_uint32(pos PROTO_ENCODE_DEBUG_ARG, 3, this->configured_line_states);
   return pos;
 }
 uint32_t SerialProxyInfo::calculate_size() const {
   uint32_t size = 0;
   size += ProtoSize::calc_length(1, this->name.size());
   size += this->port_type ? 2 : 0;
-  size += ProtoSize::calc_uint32(1, this->configured_line_states);
   return size;
 }
 #endif
@@ -1275,24 +1273,12 @@ uint8_t *ListEntitiesServicesArgument::encode(ProtoWriteBuffer &buffer PROTO_ENC
   uint8_t *__restrict__ pos = buffer.get_pos();
   ProtoEncode::encode_string(pos PROTO_ENCODE_DEBUG_ARG, 1, this->name);
   ProtoEncode::encode_uint32(pos PROTO_ENCODE_DEBUG_ARG, 2, static_cast<uint32_t>(this->type));
-#ifdef USE_API_USER_DEFINED_ACTION_METADATA
-  ProtoEncode::encode_string(pos PROTO_ENCODE_DEBUG_ARG, 3, this->description);
-#endif
-#ifdef USE_API_USER_DEFINED_ACTION_METADATA
-  ProtoEncode::encode_string(pos PROTO_ENCODE_DEBUG_ARG, 4, this->example);
-#endif
   return pos;
 }
 uint32_t ListEntitiesServicesArgument::calculate_size() const {
   uint32_t size = 0;
   size += ProtoSize::calc_length(1, this->name.size());
   size += this->type ? 2 : 0;
-#ifdef USE_API_USER_DEFINED_ACTION_METADATA
-  size += ProtoSize::calc_length(1, this->description.size());
-#endif
-#ifdef USE_API_USER_DEFINED_ACTION_METADATA
-  size += ProtoSize::calc_length(1, this->example.size());
-#endif
   return size;
 }
 uint8_t *ListEntitiesServicesResponse::encode(ProtoWriteBuffer &buffer PROTO_ENCODE_DEBUG_PARAM) const {
@@ -1303,9 +1289,6 @@ uint8_t *ListEntitiesServicesResponse::encode(ProtoWriteBuffer &buffer PROTO_ENC
     ProtoEncode::encode_sub_message(pos PROTO_ENCODE_DEBUG_ARG, buffer, 3, it);
   }
   ProtoEncode::encode_uint32(pos PROTO_ENCODE_DEBUG_ARG, 4, static_cast<uint32_t>(this->supports_response));
-#ifdef USE_API_USER_DEFINED_ACTION_METADATA
-  ProtoEncode::encode_string(pos PROTO_ENCODE_DEBUG_ARG, 5, this->description);
-#endif
   return pos;
 }
 uint32_t ListEntitiesServicesResponse::calculate_size() const {
@@ -1318,9 +1301,6 @@ uint32_t ListEntitiesServicesResponse::calculate_size() const {
     }
   }
   size += this->supports_response ? 2 : 0;
-#ifdef USE_API_USER_DEFINED_ACTION_METADATA
-  size += ProtoSize::calc_length(1, this->description.size());
-#endif
   return size;
 }
 bool ExecuteServiceArgument::decode_varint(uint32_t field_id, proto_varint_value_t value) {
@@ -2341,6 +2321,7 @@ uint8_t *ListEntitiesMediaPlayerResponse::encode(ProtoWriteBuffer &buffer PROTO_
 #endif
   ProtoEncode::encode_bool(pos PROTO_ENCODE_DEBUG_ARG, 6, this->disabled_by_default);
   ProtoEncode::encode_uint32(pos PROTO_ENCODE_DEBUG_ARG, 7, static_cast<uint32_t>(this->entity_category));
+  ProtoEncode::encode_bool(pos PROTO_ENCODE_DEBUG_ARG, 8, this->supports_pause);
   for (auto &it : this->supported_formats) {
     ProtoEncode::encode_sub_message(pos PROTO_ENCODE_DEBUG_ARG, buffer, 9, it);
   }
@@ -2360,6 +2341,7 @@ uint32_t ListEntitiesMediaPlayerResponse::calculate_size() const {
 #endif
   size += ProtoSize::calc_bool(1, this->disabled_by_default);
   size += this->entity_category ? 2 : 0;
+  size += ProtoSize::calc_bool(1, this->supports_pause);
   if (!this->supported_formats.empty()) {
     for (const auto &it : this->supported_formats) {
       size += ProtoSize::calc_message_force(1, it.calculate_size());
@@ -3960,18 +3942,6 @@ uint32_t ZWaveProxyRequest::calculate_size() const {
   size += ProtoSize::calc_length(1, this->data_len);
   return size;
 }
-uint8_t *ZWaveProxyRequestResponse::encode(ProtoWriteBuffer &buffer PROTO_ENCODE_DEBUG_PARAM) const {
-  uint8_t *__restrict__ pos = buffer.get_pos();
-  ProtoEncode::encode_uint32(pos PROTO_ENCODE_DEBUG_ARG, 1, static_cast<uint32_t>(this->type));
-  ProtoEncode::encode_uint32(pos PROTO_ENCODE_DEBUG_ARG, 2, static_cast<uint32_t>(this->status));
-  return pos;
-}
-uint32_t ZWaveProxyRequestResponse::calculate_size() const {
-  uint32_t size = 0;
-  size += this->type ? 2 : 0;
-  size += this->status ? 2 : 0;
-  return size;
-}
 #endif
 #ifdef USE_INFRARED
 uint8_t *ListEntitiesInfraredResponse::encode(ProtoWriteBuffer &buffer PROTO_ENCODE_DEBUG_PARAM) const {
@@ -4214,14 +4184,12 @@ uint8_t *SerialProxyGetModemPinsResponse::encode(ProtoWriteBuffer &buffer PROTO_
   uint8_t *__restrict__ pos = buffer.get_pos();
   ProtoEncode::encode_uint32(pos PROTO_ENCODE_DEBUG_ARG, 1, this->instance);
   ProtoEncode::encode_uint32(pos PROTO_ENCODE_DEBUG_ARG, 2, this->line_states);
-  ProtoEncode::encode_uint32(pos PROTO_ENCODE_DEBUG_ARG, 3, static_cast<uint32_t>(this->status));
   return pos;
 }
 uint32_t SerialProxyGetModemPinsResponse::calculate_size() const {
   uint32_t size = 0;
   size += ProtoSize::calc_uint32(1, this->instance);
   size += ProtoSize::calc_uint32(1, this->line_states);
-  size += this->status ? 2 : 0;
   return size;
 }
 bool SerialProxyRequest::decode_varint(uint32_t field_id, proto_varint_value_t value) {
@@ -4253,19 +4221,6 @@ uint32_t SerialProxyRequestResponse::calculate_size() const {
   size += ProtoSize::calc_length(1, this->error_message.size());
   return size;
 }
-bool SerialProxySetModeRequest::decode_varint(uint32_t field_id, proto_varint_value_t value) {
-  switch (field_id) {
-    case 1:
-      this->instance = value;
-      break;
-    case 2:
-      this->mode = static_cast<enums::SerialProxyMode>(value);
-      break;
-    default:
-      return false;
-  }
-  return true;
-}
 #endif
 #ifdef USE_BLUETOOTH_PROXY_CONNECTIONS
 bool BluetoothSetConnectionParamsRequest::decode_varint(uint32_t field_id, proto_varint_value_t value) {

esphome/components/api/api_pb2_dump.cpp

@@ -816,18 +816,6 @@ template<> const char *proto_enum_to_string<enums::ZWaveProxyRequestType>(enums:
       return ESPHOME_PSTR("UNKNOWN");
   }
 }
-template<> const char *proto_enum_to_string<enums::ZWaveProxyStatus>(enums::ZWaveProxyStatus value) {
-  switch (value) {
-    case enums::ZWAVE_PROXY_STATUS_OK:
-      return ESPHOME_PSTR("ZWAVE_PROXY_STATUS_OK");
-    case enums::ZWAVE_PROXY_STATUS_IN_USE:
-      return ESPHOME_PSTR("ZWAVE_PROXY_STATUS_IN_USE");
-    case enums::ZWAVE_PROXY_STATUS_NOT_SUPPORTED:
-      return ESPHOME_PSTR("ZWAVE_PROXY_STATUS_NOT_SUPPORTED");
-    default:
-      return ESPHOME_PSTR("UNKNOWN");
-  }
-}
 #endif
 #ifdef USE_SERIAL_PROXY
 template<> const char *proto_enum_to_string<enums::SerialProxyParity>(enums::SerialProxyParity value) {
@@ -850,12 +838,6 @@ template<> const char *proto_enum_to_string<enums::SerialProxyRequestType>(enums
       return ESPHOME_PSTR("SERIAL_PROXY_REQUEST_TYPE_UNSUBSCRIBE");
     case enums::SERIAL_PROXY_REQUEST_TYPE_FLUSH:
       return ESPHOME_PSTR("SERIAL_PROXY_REQUEST_TYPE_FLUSH");
-    case enums::SERIAL_PROXY_REQUEST_TYPE_CONFIGURE:
-      return ESPHOME_PSTR("SERIAL_PROXY_REQUEST_TYPE_CONFIGURE");
-    case enums::SERIAL_PROXY_REQUEST_TYPE_SET_MODEM_PINS:
-      return ESPHOME_PSTR("SERIAL_PROXY_REQUEST_TYPE_SET_MODEM_PINS");
-    case enums::SERIAL_PROXY_REQUEST_TYPE_SET_MODE:
-      return ESPHOME_PSTR("SERIAL_PROXY_REQUEST_TYPE_SET_MODE");
     default:
       return ESPHOME_PSTR("UNKNOWN");
   }
@@ -872,20 +854,6 @@ template<> const char *proto_enum_to_string<enums::SerialProxyStatus>(enums::Ser
       return ESPHOME_PSTR("SERIAL_PROXY_STATUS_TIMEOUT");
     case enums::SERIAL_PROXY_STATUS_NOT_SUPPORTED:
       return ESPHOME_PSTR("SERIAL_PROXY_STATUS_NOT_SUPPORTED");
-    case enums::SERIAL_PROXY_STATUS_PORT_IN_USE:
-      return ESPHOME_PSTR("SERIAL_PROXY_STATUS_PORT_IN_USE");
-    case enums::SERIAL_PROXY_STATUS_INVALID_ARGUMENT:
-      return ESPHOME_PSTR("SERIAL_PROXY_STATUS_INVALID_ARGUMENT");
-    default:
-      return ESPHOME_PSTR("UNKNOWN");
-  }
-}
-template<> const char *proto_enum_to_string<enums::SerialProxyMode>(enums::SerialProxyMode value) {
-  switch (value) {
-    case enums::SERIAL_PROXY_MODE_RAW:
-      return ESPHOME_PSTR("SERIAL_PROXY_MODE_RAW");
-    case enums::SERIAL_PROXY_MODE_PROTOCOL:
-      return ESPHOME_PSTR("SERIAL_PROXY_MODE_PROTOCOL");
     default:
       return ESPHOME_PSTR("UNKNOWN");
   }
@@ -946,7 +914,6 @@ const char *SerialProxyInfo::dump_to(DumpBuffer &out) const {
   MessageDumpHelper helper(out, ESPHOME_PSTR("SerialProxyInfo"));
   dump_field(out, ESPHOME_PSTR("name"), this->name);
   dump_field(out, ESPHOME_PSTR("port_type"), static_cast<enums::SerialProxyPortType>(this->port_type));
-  dump_field(out, ESPHOME_PSTR("configured_line_states"), this->configured_line_states);
   return out.c_str();
 }
 #endif
@@ -1512,12 +1479,6 @@ const char *ListEntitiesServicesArgument::dump_to(DumpBuffer &out) const {
   MessageDumpHelper helper(out, ESPHOME_PSTR("ListEntitiesServicesArgument"));
   dump_field(out, ESPHOME_PSTR("name"), this->name);
   dump_field(out, ESPHOME_PSTR("type"), static_cast<enums::ServiceArgType>(this->type));
-#ifdef USE_API_USER_DEFINED_ACTION_METADATA
-  dump_field(out, ESPHOME_PSTR("description"), this->description);
-#endif
-#ifdef USE_API_USER_DEFINED_ACTION_METADATA
-  dump_field(out, ESPHOME_PSTR("example"), this->example);
-#endif
   return out.c_str();
 }
 const char *ListEntitiesServicesResponse::dump_to(DumpBuffer &out) const {
@@ -1530,9 +1491,6 @@ const char *ListEntitiesServicesResponse::dump_to(DumpBuffer &out) const {
     out.append("\n");
   }
   dump_field(out, ESPHOME_PSTR("supports_response"), static_cast<enums::SupportsResponseType>(this->supports_response));
-#ifdef USE_API_USER_DEFINED_ACTION_METADATA
-  dump_field(out, ESPHOME_PSTR("description"), this->description);
-#endif
   return out.c_str();
 }
 const char *ExecuteServiceArgument::dump_to(DumpBuffer &out) const {
@@ -1983,6 +1941,7 @@ const char *ListEntitiesMediaPlayerResponse::dump_to(DumpBuffer &out) const {
 #endif
   dump_field(out, ESPHOME_PSTR("disabled_by_default"), this->disabled_by_default);
   dump_field(out, ESPHOME_PSTR("entity_category"), static_cast<enums::EntityCategory>(this->entity_category));
+  dump_field(out, ESPHOME_PSTR("supports_pause"), this->supports_pause);
   for (const auto &it : this->supported_formats) {
     out.append(4, ' ').append_p(ESPHOME_PSTR("supported_formats")).append(": ");
     it.dump_to(out);
@@ -2685,12 +2644,6 @@ const char *ZWaveProxyRequest::dump_to(DumpBuffer &out) const {
   dump_bytes_field(out, ESPHOME_PSTR("data"), this->data, this->data_len);
   return out.c_str();
 }
-const char *ZWaveProxyRequestResponse::dump_to(DumpBuffer &out) const {
-  MessageDumpHelper helper(out, ESPHOME_PSTR("ZWaveProxyRequestResponse"));
-  dump_field(out, ESPHOME_PSTR("type"), static_cast<enums::ZWaveProxyRequestType>(this->type));
-  dump_field(out, ESPHOME_PSTR("status"), static_cast<enums::ZWaveProxyStatus>(this->status));
-  return out.c_str();
-}
 #endif
 #ifdef USE_INFRARED
 const char *ListEntitiesInfraredResponse::dump_to(DumpBuffer &out) const {
@@ -2800,7 +2753,6 @@ const char *SerialProxyGetModemPinsResponse::dump_to(DumpBuffer &out) const {
   MessageDumpHelper helper(out, ESPHOME_PSTR("SerialProxyGetModemPinsResponse"));
   dump_field(out, ESPHOME_PSTR("instance"), this->instance);
   dump_field(out, ESPHOME_PSTR("line_states"), this->line_states);
-  dump_field(out, ESPHOME_PSTR("status"), static_cast<enums::SerialProxyStatus>(this->status));
   return out.c_str();
 }
 const char *SerialProxyRequest::dump_to(DumpBuffer &out) const {
@@ -2817,12 +2769,6 @@ const char *SerialProxyRequestResponse::dump_to(DumpBuffer &out) const {
   dump_field(out, ESPHOME_PSTR("error_message"), this->error_message);
   return out.c_str();
 }
-const char *SerialProxySetModeRequest::dump_to(DumpBuffer &out) const {
-  MessageDumpHelper helper(out, ESPHOME_PSTR("SerialProxySetModeRequest"));
-  dump_field(out, ESPHOME_PSTR("instance"), this->instance);
-  dump_field(out, ESPHOME_PSTR("mode"), static_cast<enums::SerialProxyMode>(this->mode));
-  return out.c_str();
-}
 #endif
 #ifdef USE_BLUETOOTH_PROXY_CONNECTIONS
 const char *BluetoothSetConnectionParamsRequest::dump_to(DumpBuffer &out) const {

esphome/components/api/api_pb2_service.cpp

@@ -712,17 +712,6 @@ void APIConnection::read_message_(uint32_t msg_size, uint32_t msg_type, const ui
       this->on_device_capabilities_request();
       break;
     }
-#ifdef USE_SERIAL_PROXY
-    case SerialProxySetModeRequest::MESSAGE_TYPE: {
-      SerialProxySetModeRequest msg;
-      msg.decode(msg_data, msg_size);
-#ifdef HAS_PROTO_MESSAGE_DUMP
-      this->log_receive_message_(LOG_STR("on_serial_proxy_set_mode_request"), msg);
-#endif
-      this->on_serial_proxy_set_mode_request(msg);
-      break;
-    }
-#endif
     default:
       break;
   }

esphome/components/api/api_pb2_service.h

@@ -235,9 +235,6 @@ class APIServerConnectionBase {
   void on_serial_proxy_request(const SerialProxyRequest &value){};
 #endif
 
-#ifdef USE_SERIAL_PROXY
-  void on_serial_proxy_set_mode_request(const SerialProxySetModeRequest &value){};
-#endif
 #ifdef USE_BLUETOOTH_PROXY_CONNECTIONS
   void on_bluetooth_set_connection_params_request(const BluetoothSetConnectionParamsRequest &value){};
 #endif

esphome/components/api/api_server.cpp

@@ -29,29 +29,6 @@ static const char *const TAG = "api";
 // APIServer
 APIServer *global_api_server = nullptr;  // NOLINT(cppcoreguidelines-avoid-non-const-global-variables)
 
-#ifdef USE_API_NOISE
-static constexpr uint32_t NOISE_PSK_PREF_HASH = 88491486UL;
-#endif
-
-#if defined(USE_API_NOISE) && defined(USE_OTA_ENCRYPTION_PROVISIONED)
-bool load_saved_noise_psk(noise::psk_t &out) {
-  SavedNoisePsk saved;
-#ifdef USE_PREFERENCE_KEY_LOOKUP
-  const bool loaded =
-      global_preferences->load_from_key(NOISE_PSK_PREF_HASH, reinterpret_cast<uint8_t *>(&saved), sizeof(saved));
-#else
-  // Slot backends need the reservation walk; it only lands on the record when the reservations before
-  // it match a normal boot, otherwise the type checked checksum fails the load
-  const bool loaded = global_preferences->make_preference<SavedNoisePsk>(NOISE_PSK_PREF_HASH, true).load(&saved);
-#endif
-  // The all-zeros record means no key
-  if (!loaded || noise::NoiseContext::is_all_zeros(saved.psk))
-    return false;
-  out = saved.psk;
-  return true;
-}
-#endif
-
 APIServer::APIServer() { global_api_server = this; }
 
 void APIServer::socket_failed_(const LogString *msg) {
@@ -64,12 +41,13 @@ void APIServer::setup() {
   ControllerRegistry::register_controller(this);
 
 #ifdef USE_API_NOISE
-  // Always reserve the slot: flash preferences are positional on esp8266, so
-  // a yaml key build must keep the layout of a runtime key build
-  this->noise_pref_ = global_preferences->make_preference<SavedNoisePsk>(NOISE_PSK_PREF_HASH, true);
+  uint32_t hash = 88491486UL;
+
+  this->noise_pref_ = global_preferences->make_preference<SavedNoisePsk>(hash, true);
+
 #ifndef USE_API_NOISE_PSK_FROM_YAML
-  // A cleared record loads fine but holds no key
-  if (this->load_and_apply_noise_psk_() && this->noise_ctx_.has_psk()) {
+  // Only load saved PSK if not set from YAML
+  if (this->load_and_apply_noise_psk_()) {
     ESP_LOGD(TAG, "Loaded saved Noise PSK");
   }
 #endif
@@ -455,10 +433,8 @@ void APIServer::send_homeassistant_action(const HomeassistantActionRequest &call
     // Home Assistant subscribes to actions shortly *after* authenticating, so actions
     // fired right at connection time (on_client_connected, on_time_sync, ...) can
     // arrive before the subscription and are lost - warn instead of failing silently.
-    ESP_LOGW(TAG, "Home Assistant %s '%s' dropped; %s",
-             call.is_event ? LOG_STR_LITERAL("event") : LOG_STR_LITERAL("action"), call.service.c_str(),
-             this->is_connected() ? LOG_STR_LITERAL("client has not subscribed to actions (yet)")
-                                  : LOG_STR_LITERAL("no client connected"));
+    ESP_LOGW(TAG, "Home Assistant %s '%s' dropped; %s", call.is_event ? "event" : "action", call.service.c_str(),
+             this->is_connected() ? "client has not subscribed to actions (yet)" : "no client connected");
   }
 }
 #ifdef USE_API_HOMEASSISTANT_ACTION_RESPONSES
@@ -572,7 +548,6 @@ const std::vector<APIServer::HomeAssistantStateSubscription> &APIServer::get_sta
 #endif
 
 #ifdef USE_API_NOISE
-#ifndef USE_API_NOISE_PSK_FROM_YAML
 bool APIServer::update_noise_psk_(const SavedNoisePsk &new_psk, const LogString *save_log_msg,
                                   const LogString *fail_log_msg, bool make_active) {
   if (!this->noise_pref_.save(&new_psk)) {
@@ -606,19 +581,22 @@ bool APIServer::update_noise_psk_(const SavedNoisePsk &new_psk, const LogString
 }
 
 bool APIServer::load_and_apply_noise_psk_() {
-  // Load into a temp so a failed read cannot disturb the key in use
-  SavedNoisePsk loaded{};
-  if (!this->noise_pref_.load(&loaded))
+  SavedNoisePsk saved{};
+  if (!this->noise_pref_.load(&saved))
     return false;
-  this->saved_psk_ = loaded;
-  // An unprovisioned device stores the reserved all-zeros key, which is no key
-  const bool has_key = !noise::NoiseContext::is_all_zeros(this->saved_psk_.psk);
-  this->noise_ctx_.set_psk(has_key ? this->saved_psk_.psk.data() : nullptr);
+  this->set_noise_psk(saved.psk);
   return true;
 }
 
 bool APIServer::save_noise_psk(noise::psk_t psk, bool make_active) {
-  if (this->saved_psk_.psk == psk) {
+#ifdef USE_API_NOISE_PSK_FROM_YAML
+  // When PSK is set from YAML, this function should never be called
+  // but if it is, reject the change
+  ESP_LOGW(TAG, "Key set in YAML");
+  return false;
+#else
+  auto &old_psk = this->noise_ctx_.get_psk();
+  if (std::equal(old_psk.begin(), old_psk.end(), psk.begin())) {
     ESP_LOGW(TAG, "New PSK matches old");
     return true;
   }
@@ -634,8 +612,15 @@ bool APIServer::save_noise_psk(noise::psk_t psk, bool make_active) {
   }
 #endif
   return result;
+#endif
 }
 bool APIServer::clear_noise_psk(bool make_active) {
+#ifdef USE_API_NOISE_PSK_FROM_YAML
+  // When PSK is set from YAML, this function should never be called
+  // but if it is, reject the change
+  ESP_LOGW(TAG, "Key set in YAML");
+  return false;
+#else
   SavedNoisePsk empty_psk{};
   bool result = this->update_noise_psk_(empty_psk, LOG_STR("Noise PSK cleared"), LOG_STR("Failed to clear Noise PSK"),
                                         make_active);
@@ -647,8 +632,8 @@ bool APIServer::clear_noise_psk(bool make_active) {
   }
 #endif
   return result;
+#endif
 }
-#endif  // USE_API_NOISE_PSK_FROM_YAML
 #endif
 
 #ifdef USE_HOMEASSISTANT_TIME

esphome/components/api/api_server.h

@@ -43,11 +43,6 @@ struct SavedNoisePsk {
   noise::psk_t psk;
 } PACKED;  // NOLINT
 #endif
-#if defined(USE_API_NOISE) && defined(USE_OTA_ENCRYPTION_PROVISIONED)
-/// One-shot read of the provisioned key for a boot without an api server (safe mode); false when
-/// there is no key
-bool load_saved_noise_psk(noise::psk_t &out);
-#endif
 
 class APIServer final : public Component,
                         public Controller
@@ -81,14 +76,9 @@ class APIServer final : public Component,
   APIBuffer &get_shared_buffer_ref() { return shared_write_buffer_; }
 
 #ifdef USE_API_NOISE
-#ifndef USE_API_NOISE_PSK_FROM_YAML
-  // Runtime key changes exist for the provisioning path only (not lambdas);
-  // with a yaml key they compile out
   bool save_noise_psk(noise::psk_t psk, bool make_active = true);
   bool clear_noise_psk(bool make_active = true);
-#endif
-  /// psk points at 32 bytes that live in flash for the life of the program
-  void set_noise_psk(const uint8_t *psk) { this->noise_ctx_.set_psk(psk); }
+  void set_noise_psk(noise::psk_t psk) { this->noise_ctx_.set_psk(psk); }
   noise::NoiseContext &get_noise_ctx() { return this->noise_ctx_; }
 #endif  // USE_API_NOISE
 
@@ -285,12 +275,10 @@ class APIServer final : public Component,
 #endif
 
 #ifdef USE_API_NOISE
-#ifndef USE_API_NOISE_PSK_FROM_YAML
   bool update_noise_psk_(const SavedNoisePsk &new_psk, const LogString *save_log_msg, const LogString *fail_log_msg,
                          bool make_active);
   // Load saved PSK from preferences and apply it. Returns true on success.
   bool load_and_apply_noise_psk_();
-#endif  // USE_API_NOISE_PSK_FROM_YAML
 #endif  // USE_API_NOISE
 #ifdef USE_API_HOMEASSISTANT_STATES
   // Helper methods to reduce code duplication
@@ -319,7 +307,7 @@ class APIServer final : public Component,
 #endif
 
   // 4-byte aligned types
-  uint32_t reboot_timeout_{900000};  // Keep in sync with DEFAULT_REBOOT_TIMEOUT in __init__.py
+  uint32_t reboot_timeout_{300000};
   uint32_t last_connected_{0};
 
   // Slots [0, api_connection_count_) are populated; trailing slots are always nullptr.
@@ -356,8 +344,8 @@ class APIServer final : public Component,
 #endif
 
   // Group smaller types together
-  uint16_t port_{6053};        // Keep in sync with DEFAULT_PORT in __init__.py
-  uint16_t batch_delay_{100};  // Keep in sync with DEFAULT_BATCH_DELAY in __init__.py
+  uint16_t port_{6053};
+  uint16_t batch_delay_{100};
   // Connection limits - these defaults will be overridden by config values
   // from cv.SplitDefault in __init__.py which sets platform-specific defaults.
   uint8_t listen_backlog_{4};
@@ -370,9 +358,6 @@ class APIServer final : public Component,
 
 #ifdef USE_API_NOISE
   noise::NoiseContext noise_ctx_;
-#ifndef USE_API_NOISE_PSK_FROM_YAML
-  SavedNoisePsk saved_psk_{};  // backs noise_ctx_ for a runtime provisioned key
-#endif
   ESPPreferenceObject noise_pref_;
 #endif  // USE_API_NOISE
 };

esphome/components/api/list_entities.cpp

@@ -99,8 +99,7 @@ ListEntitiesIterator::ListEntitiesIterator(APIConnection *client) : client_(clie
 static constexpr uint8_t SERVICE_YIELD_INTERVAL = 3;
 
 bool ListEntitiesIterator::on_service(UserServiceDescriptor *service) {
-  UserActionScratch scratch;
-  auto resp = service->encode_list_service_response(scratch);
+  auto resp = service->encode_list_service_response();
   if (!this->client_->send_message(resp))
     return false;
   // at_ is this service's index

esphome/components/api/proto.h

@@ -684,6 +684,11 @@ class ProtoSize {
     return value < VARINT_THRESHOLD_1_BYTE ? 1 : (value < VARINT_THRESHOLD_2_BYTE ? 2 : 3);
   }
 
+  // Varint encoded length for an 8-bit value (1 or 2 bytes).
+  static constexpr inline uint8_t ESPHOME_ALWAYS_INLINE varint8(uint8_t value) {
+    return value < VARINT_THRESHOLD_1_BYTE ? 1 : 2;
+  }
+
   /**
    * @brief Calculates the size in bytes needed to encode a uint32_t value as a varint
    *

esphome/components/api/user_services.cpp

@@ -1,52 +1,9 @@
 #include "user_services.h"
-#include "esphome/core/hal.h"
 #include "esphome/core/log.h"
 #include "esphome/core/string_ref.h"
 
 namespace esphome::api {
 
-StringRef UserServiceStatic::str_(size_t idx, std::span<char> &scratch) const {
-  const char *s = progmem_read_ptr(&this->strings_[idx]);
-  if (s == nullptr)
-    return {};
-#ifdef USE_ESP8266
-  // Codegen sizes the scratch buffer for the largest service; the bound only guards other callers
-  if (scratch.empty())
-    return {};
-  size_t len = strnlen_P(s, scratch.size() - 1);
-  progmem_memcpy(scratch.data(), s, len);
-  scratch[len] = '\0';
-  StringRef ref(scratch.data(), len);
-  scratch = scratch.subspan(len + 1);
-  return ref;
-#else
-  return StringRef(s);
-#endif
-}
-
-ListEntitiesServicesResponse UserServiceStatic::encode_list_service_response_(
-    std::span<const enums::ServiceArgType> arg_types, std::span<char> scratch) const {
-  ListEntitiesServicesResponse msg;
-  msg.name = this->str_(0, scratch);
-  msg.key = this->key_;
-  msg.supports_response = this->supports_response_;
-#ifdef USE_API_USER_DEFINED_ACTION_METADATA
-  msg.description = this->str_(1, scratch);
-#endif
-  msg.args.init(arg_types.size());
-  for (size_t i = 0; i < arg_types.size(); i++) {
-    size_t base = USER_ACTION_HEADER_STRINGS + i * USER_ACTION_ARG_STRINGS;
-    auto &arg = msg.args.emplace_back();
-    arg.type = arg_types[i];
-    arg.name = this->str_(base, scratch);
-#ifdef USE_API_USER_DEFINED_ACTION_METADATA
-    arg.description = this->str_(base + 1, scratch);
-    arg.example = this->str_(base + 2, scratch);
-#endif
-  }
-  return msg;
-}
-
 template<> bool get_execute_arg_value<bool>(const ExecuteServiceArgument &arg) { return arg.bool_; }
 template<> int32_t get_execute_arg_value<int32_t>(const ExecuteServiceArgument &arg) {
   if (arg.legacy_int != 0)

esphome/components/api/user_services.h

@@ -1,6 +1,5 @@
 #pragma once
 
-#include <span>
 #include <tuple>
 #include <utility>
 #include <vector>
@@ -20,9 +19,7 @@ class APIServer;
 
 class UserServiceDescriptor {
  public:
-  /// Build the list-entities message. On ESP8266 the strings live in PROGMEM and are copied into
-  /// `scratch`, so the returned message is only valid while `scratch` is; other platforms ignore it.
-  virtual ListEntitiesServicesResponse encode_list_service_response(std::span<char> scratch) = 0;
+  virtual ListEntitiesServicesResponse encode_list_service_response() = 0;
 
   virtual bool execute_service(const ExecuteServiceRequest &req) = 0;
 #ifdef USE_API_USER_DEFINED_ACTION_RESPONSES
@@ -37,51 +34,29 @@ template<typename T> T get_execute_arg_value(const ExecuteServiceArgument &arg);
 
 template<typename T> enums::ServiceArgType to_service_arg_type();
 
-// Scratch buffer list-entities hands to encode_list_service_response(); only ESP8266 copies into it
-#ifdef USE_ESP8266
-using UserActionScratch = std::array<char, API_USER_ACTION_STRINGS_SCRATCH_SIZE>;
-#else
-using UserActionScratch = std::array<char, 0>;
-#endif
-
-// Non-template base for YAML-defined services so the list-entities encoder is compiled once.
-// All strings live in one PROGMEM pointer table emitted by codegen (see _action_strings in
-// __init__.py), so each service costs a single pointer of RAM. Layout: the action name, then
-// each argument name; with USE_API_USER_DEFINED_ACTION_METADATA the action description follows
-// the name and every argument is (name, description, example). Unset metadata is nullptr.
-#ifdef USE_API_USER_DEFINED_ACTION_METADATA
-static constexpr size_t USER_ACTION_HEADER_STRINGS = 2;
-static constexpr size_t USER_ACTION_ARG_STRINGS = 3;
-#else
-static constexpr size_t USER_ACTION_HEADER_STRINGS = 1;
-static constexpr size_t USER_ACTION_ARG_STRINGS = 1;
-#endif
-class UserServiceStatic : public UserServiceDescriptor {
+// Base class for YAML-defined services (most common case)
+// Stores only pointers to string literals in flash - no heap allocation
+template<typename... Ts> class UserServiceBase : public UserServiceDescriptor {
  public:
-  UserServiceStatic(const char *const *strings, uint32_t key,
-                    enums::SupportsResponseType supports_response = enums::SUPPORTS_RESPONSE_NONE)
-      : strings_(strings), key_(key), supports_response_(supports_response) {}
+  UserServiceBase(const char *name, const std::array<const char *, sizeof...(Ts)> &arg_names,
+                  enums::SupportsResponseType supports_response = enums::SUPPORTS_RESPONSE_NONE)
+      : name_(name), arg_names_(arg_names), supports_response_(supports_response) {
+    this->key_ = fnv1_hash(name);
+  }
 
- protected:
-  ListEntitiesServicesResponse encode_list_service_response_(std::span<const enums::ServiceArgType> arg_types,
-                                                             std::span<char> scratch) const;
-  /// Reference table entry `idx`; nullptr gives an empty StringRef.
-  /// On ESP8266 the bytes are copied out of PROGMEM into `scratch` with a terminator, and the span
-  /// is advanced past the copy.
-  StringRef str_(size_t idx, std::span<char> &scratch) const;
-
-  const char *const *strings_;  // PROGMEM pointer table, read with progmem_read_ptr()
-  uint32_t key_;
-  enums::SupportsResponseType supports_response_;
-};
-
-template<typename... Ts> class UserServiceBase : public UserServiceStatic {
- public:
-  using UserServiceStatic::UserServiceStatic;
-
-  ListEntitiesServicesResponse encode_list_service_response(std::span<char> scratch) override {
+  ListEntitiesServicesResponse encode_list_service_response() override {
+    ListEntitiesServicesResponse msg;
+    msg.name = StringRef(this->name_);
+    msg.key = this->key_;
+    msg.supports_response = this->supports_response_;
     std::array<enums::ServiceArgType, sizeof...(Ts)> arg_types = {to_service_arg_type<Ts>()...};
-    return this->encode_list_service_response_(arg_types, scratch);
+    msg.args.init(sizeof...(Ts));
+    for (size_t i = 0; i < sizeof...(Ts); i++) {
+      auto &arg = msg.args.emplace_back();
+      arg.type = arg_types[i];
+      arg.name = StringRef(this->arg_names_[i]);
+    }
+    return msg;
   }
 
   bool execute_service(const ExecuteServiceRequest &req) override {
@@ -114,6 +89,12 @@ template<typename... Ts> class UserServiceBase : public UserServiceStatic {
   void execute_(const ArgsContainer &args, uint32_t call_id, bool return_response, std::index_sequence<S...> /*type*/) {
     this->execute(call_id, return_response, (get_execute_arg_value<Ts>(args[S]))...);
   }
+
+  // Pointers to string literals in flash - no heap allocation
+  const char *name_;
+  std::array<const char *, sizeof...(Ts)> arg_names_;
+  uint32_t key_{0};
+  enums::SupportsResponseType supports_response_{enums::SUPPORTS_RESPONSE_NONE};
 };
 
 // Separate class for custom_api_device services (rare case)
@@ -125,7 +106,7 @@ template<typename... Ts> class UserServiceDynamic : public UserServiceDescriptor
     this->key_ = fnv1_hash(this->name_.c_str());
   }
 
-  ListEntitiesServicesResponse encode_list_service_response(std::span<char> /*scratch*/) override {
+  ListEntitiesServicesResponse encode_list_service_response() override {
     ListEntitiesServicesResponse msg;
     msg.name = StringRef(this->name_);
     msg.key = this->key_;
@@ -186,8 +167,8 @@ template<typename... Ts>
 class UserServiceTrigger<enums::SUPPORTS_RESPONSE_NONE, Ts...> final : public UserServiceBase<Ts...>,
                                                                        public Trigger<Ts...> {
  public:
-  UserServiceTrigger(const char *const *strings, uint32_t key)
-      : UserServiceBase<Ts...>(strings, key, enums::SUPPORTS_RESPONSE_NONE) {}
+  UserServiceTrigger(const char *name, const std::array<const char *, sizeof...(Ts)> &arg_names)
+      : UserServiceBase<Ts...>(name, arg_names, enums::SUPPORTS_RESPONSE_NONE) {}
 
  protected:
   void execute(uint32_t /*call_id*/, bool /*return_response*/, Ts... x) override { this->trigger(x...); }
@@ -198,8 +179,8 @@ template<typename... Ts>
 class UserServiceTrigger<enums::SUPPORTS_RESPONSE_OPTIONAL, Ts...> final : public UserServiceBase<Ts...>,
                                                                            public Trigger<uint32_t, bool, Ts...> {
  public:
-  UserServiceTrigger(const char *const *strings, uint32_t key)
-      : UserServiceBase<Ts...>(strings, key, enums::SUPPORTS_RESPONSE_OPTIONAL) {}
+  UserServiceTrigger(const char *name, const std::array<const char *, sizeof...(Ts)> &arg_names)
+      : UserServiceBase<Ts...>(name, arg_names, enums::SUPPORTS_RESPONSE_OPTIONAL) {}
 
  protected:
   void execute(uint32_t call_id, bool return_response, Ts... x) override {
@@ -212,8 +193,8 @@ template<typename... Ts>
 class UserServiceTrigger<enums::SUPPORTS_RESPONSE_ONLY, Ts...> final : public UserServiceBase<Ts...>,
                                                                        public Trigger<uint32_t, Ts...> {
  public:
-  UserServiceTrigger(const char *const *strings, uint32_t key)
-      : UserServiceBase<Ts...>(strings, key, enums::SUPPORTS_RESPONSE_ONLY) {}
+  UserServiceTrigger(const char *name, const std::array<const char *, sizeof...(Ts)> &arg_names)
+      : UserServiceBase<Ts...>(name, arg_names, enums::SUPPORTS_RESPONSE_ONLY) {}
 
  protected:
   void execute(uint32_t call_id, bool /*return_response*/, Ts... x) override { this->trigger(call_id, x...); }
@@ -224,8 +205,8 @@ template<typename... Ts>
 class UserServiceTrigger<enums::SUPPORTS_RESPONSE_STATUS, Ts...> final : public UserServiceBase<Ts...>,
                                                                          public Trigger<uint32_t, Ts...> {
  public:
-  UserServiceTrigger(const char *const *strings, uint32_t key)
-      : UserServiceBase<Ts...>(strings, key, enums::SUPPORTS_RESPONSE_STATUS) {}
+  UserServiceTrigger(const char *name, const std::array<const char *, sizeof...(Ts)> &arg_names)
+      : UserServiceBase<Ts...>(name, arg_names, enums::SUPPORTS_RESPONSE_STATUS) {}
 
  protected:
   void execute(uint32_t call_id, bool /*return_response*/, Ts... x) override { this->trigger(call_id, x...); }

esphome/components/aqi/aqi_sensor.cpp

@@ -23,10 +23,8 @@ void AQISensor::setup() {
 
 void AQISensor::dump_config() {
   ESP_LOGCONFIG(TAG, "AQI Sensor:");
-  ESP_LOGCONFIG(TAG, "  Calculation Type: %s",
-                this->aqi_calc_type_ == AQI_TYPE ? LOG_STR_LITERAL("AQI") : LOG_STR_LITERAL("CAQI"));
-  ESP_LOGCONFIG(TAG, "  Extended Range: %s",
-                this->extended_range_ ? LOG_STR_LITERAL("enabled") : LOG_STR_LITERAL("disabled"));
+  ESP_LOGCONFIG(TAG, "  Calculation Type: %s", this->aqi_calc_type_ == AQI_TYPE ? "AQI" : "CAQI");
+  ESP_LOGCONFIG(TAG, "  Extended Range: %s", this->extended_range_ ? "enabled" : "disabled");
   if (this->pm_2_5_sensor_ != nullptr) {
     ESP_LOGCONFIG(TAG, "  PM2.5 Sensor: '%s'", this->pm_2_5_sensor_->get_name().c_str());
   }

esphome/components/at581x/__init__.py

@@ -181,11 +181,11 @@ async def at581x_settings_to_code(
     await cg.register_parented(var, config[CONF_ID])
 
     # Radar configuration
-    if (frontend_reset := config.get(CONF_HW_FRONTEND_RESET)) is not None:
+    if frontend_reset := config.get(CONF_HW_FRONTEND_RESET):
         template_ = await cg.templatable(frontend_reset, args, cg.int8)
         cg.add(var.set_hw_frontend_reset(template_))
 
-    if (freq := config.get(CONF_FREQUENCY)) is not None:
+    if freq := config.get(CONF_FREQUENCY):
         if not cg.is_template(freq):
             freq = int(freq / 1000000)
         template_ = await cg.templatable(freq, args, cg.int_)
@@ -195,19 +195,19 @@ async def at581x_settings_to_code(
         template_ = await cg.templatable(sens_dist, args, cg.int_)
         cg.add(var.set_sensing_distance(template_))
 
-    if (selfcheck := config.get(CONF_POWERON_SELFCHECK_TIME)) is not None:
+    if selfcheck := config.get(CONF_POWERON_SELFCHECK_TIME):
         template_ = await cg.templatable(selfcheck, args, cg.int_)
         cg.add(var.set_poweron_selfcheck_time(template_))
 
-    if (protect := config.get(CONF_PROTECT_TIME)) is not None:
+    if protect := config.get(CONF_PROTECT_TIME):
         template_ = await cg.templatable(protect, args, cg.int_)
         cg.add(var.set_protect_time(template_))
 
-    if (trig_base := config.get(CONF_TRIGGER_BASE)) is not None:
+    if trig_base := config.get(CONF_TRIGGER_BASE):
         template_ = await cg.templatable(trig_base, args, cg.int_)
         cg.add(var.set_trigger_base(template_))
 
-    if (trig_keep := config.get(CONF_TRIGGER_KEEP)) is not None:
+    if trig_keep := config.get(CONF_TRIGGER_KEEP):
         template_ = await cg.templatable(trig_keep, args, cg.int_)
         cg.add(var.set_trigger_keep(template_))
 
@@ -215,7 +215,7 @@ async def at581x_settings_to_code(
         template_ = await cg.templatable(stage_gain, args, cg.int_)
         cg.add(var.set_stage_gain(template_))
 
-    if (power := config.get(CONF_POWER_CONSUMPTION)) is not None:
+    if power := config.get(CONF_POWER_CONSUMPTION):
         if not cg.is_template(power):
             power = int(power * 1000000)
         template_ = await cg.templatable(power, args, cg.int_)

esphome/components/atm90e32/atm90e32.cpp

@@ -9,10 +9,6 @@ namespace esphome::atm90e32 {
 
 static const char *const TAG = "atm90e32";
 
-static const LogString *offset_calibration_name(bool power_offsets) {
-  return power_offsets ? LOG_STR("Power offset") : LOG_STR("Offset");
-}
-
 static uint32_t pref_hash(const char *prefix, const char *name_space) {
   auto hash = fnv1_hash(prefix);
   return fnv1_hash_extend(hash, name_space);
@@ -207,12 +203,13 @@ void ATM90E32Component::setup() {
 
     // Initialize flash storage for power offset calibrations
     uint32_t po_hash = pref_hash("_power_offset_calibration_", cs);
-    this->power_offset_pref_ = global_preferences->make_preference<OffsetCalibration[3]>(po_hash, true);
+    this->power_offset_pref_ = global_preferences->make_preference<PowerOffsetCalibration[3]>(po_hash, true);
     bool migrated_power_offset = false;
     if (has_distinct_legacy_namespace) {
       uint32_t legacy_po_hash = pref_hash("_power_offset_calibration_", legacy_cs);
-      auto legacy_power_offset_pref = global_preferences->make_preference<OffsetCalibration[3]>(legacy_po_hash, true);
-      OffsetCalibration power_offset_data[3]{};
+      auto legacy_power_offset_pref =
+          global_preferences->make_preference<PowerOffsetCalibration[3]>(legacy_po_hash, true);
+      PowerOffsetCalibration power_offset_data[3]{};
       int migration_status =
           migrate_legacy_pref_if_needed(this->power_offset_pref_, legacy_power_offset_pref, &power_offset_data);
       migrated_power_offset = migration_status > 0;
@@ -227,20 +224,20 @@ void ATM90E32Component::setup() {
       global_preferences->sync();
     }
 
-    this->restore_offset_calibrations_(OffsetCalibrationType::OFFSET_CALIBRATION_TYPE_VOLTAGE_CURRENT);
-    this->restore_offset_calibrations_(OffsetCalibrationType::OFFSET_CALIBRATION_TYPE_POWER);
+    this->restore_offset_calibrations_();
+    this->restore_power_offset_calibrations_();
   } else {
     ESP_LOGI(TAG, "[CALIBRATION][%s] Power & Voltage/Current offset calibration is disabled. Using config file values.",
              cs);
     for (uint8_t phase = 0; phase < 3; ++phase) {
       this->write16_(this->voltage_offset_registers[phase],
-                     static_cast<uint16_t>(this->offset_phase_[phase].first_offset));
+                     static_cast<uint16_t>(this->offset_phase_[phase].voltage_offset_));
       this->write16_(this->current_offset_registers[phase],
-                     static_cast<uint16_t>(this->offset_phase_[phase].second_offset));
+                     static_cast<uint16_t>(this->offset_phase_[phase].current_offset_));
       this->write16_(this->power_offset_registers[phase],
-                     static_cast<uint16_t>(this->power_offset_phase_[phase].first_offset));
+                     static_cast<uint16_t>(this->power_offset_phase_[phase].active_power_offset));
       this->write16_(this->reactive_power_offset_registers[phase],
-                     static_cast<uint16_t>(this->power_offset_phase_[phase].second_offset));
+                     static_cast<uint16_t>(this->power_offset_phase_[phase].reactive_power_offset));
     }
   }
 
@@ -320,8 +317,8 @@ void ATM90E32Component::log_calibration_status_() {
              cs);
     for (uint8_t phase = 0; phase < 3; ++phase) {
       ESP_LOGW(TAG, "[CALIBRATION][%s] |   %c   |  %6d  | %6d  |  %6d  | %6d  |", cs, 'A' + phase,
-               this->config_offset_phase_[phase].first_offset, this->offset_phase_[phase].first_offset,
-               this->config_offset_phase_[phase].second_offset, this->offset_phase_[phase].second_offset);
+               this->config_offset_phase_[phase].voltage_offset_, this->offset_phase_[phase].voltage_offset_,
+               this->config_offset_phase_[phase].current_offset_, this->offset_phase_[phase].current_offset_);
     }
     ESP_LOGW(TAG,
              "[CALIBRATION][%s] ===============================================================================", cs);
@@ -338,8 +335,10 @@ void ATM90E32Component::log_calibration_status_() {
              cs);
     for (uint8_t phase = 0; phase < 3; ++phase) {
       ESP_LOGW(TAG, "[CALIBRATION][%s] |   %c   |  %6d  | %6d  |  %6d  | %6d  |", cs, 'A' + phase,
-               this->config_power_offset_phase_[phase].first_offset, this->power_offset_phase_[phase].first_offset,
-               this->config_power_offset_phase_[phase].second_offset, this->power_offset_phase_[phase].second_offset);
+               this->config_power_offset_phase_[phase].active_power_offset,
+               this->power_offset_phase_[phase].active_power_offset,
+               this->config_power_offset_phase_[phase].reactive_power_offset,
+               this->power_offset_phase_[phase].reactive_power_offset);
     }
     ESP_LOGW(TAG,
              "[CALIBRATION][%s] ===============================================================================", cs);
@@ -373,7 +372,7 @@ void ATM90E32Component::log_calibration_status_() {
     ESP_LOGI(TAG, "[CALIBRATION][%s] --------------------------------------------------------------", cs);
     for (uint8_t phase = 0; phase < 3; phase++) {
       ESP_LOGI(TAG, "[CALIBRATION][%s] |   %c   |     %6d      |     %6d      |", cs, 'A' + phase,
-               this->offset_phase_[phase].first_offset, this->offset_phase_[phase].second_offset);
+               this->offset_phase_[phase].voltage_offset_, this->offset_phase_[phase].current_offset_);
     }
     ESP_LOGI(TAG, "[CALIBRATION][%s] ==============================================================\\n", cs);
   }
@@ -386,7 +385,8 @@ void ATM90E32Component::log_calibration_status_() {
     ESP_LOGI(TAG, "[CALIBRATION][%s] ---------------------------------------------------------------------", cs);
     for (uint8_t phase = 0; phase < 3; phase++) {
       ESP_LOGI(TAG, "[CALIBRATION][%s] |   %c   |       %6d        |        %6d        |", cs, 'A' + phase,
-               this->power_offset_phase_[phase].first_offset, this->power_offset_phase_[phase].second_offset);
+               this->power_offset_phase_[phase].active_power_offset,
+               this->power_offset_phase_[phase].reactive_power_offset);
     }
     ESP_LOGI(TAG, "[CALIBRATION][%s] =====================================================================\n", cs);
   }
@@ -756,68 +756,36 @@ void ATM90E32Component::save_gain_calibration_to_memory_() {
   }
 }
 
-void ATM90E32Component::finish_offset_calibration_(const OffsetCalibration (&previous)[3], bool previous_restored,
-                                                   bool previous_using_saved, OffsetCalibrationType type) {
-  const bool power_offsets = type == OffsetCalibrationType::OFFSET_CALIBRATION_TYPE_POWER;
+void ATM90E32Component::save_offset_calibration_to_memory_() {
   const char *cs = this->get_calibration_id_();
-  const LogString *name = offset_calibration_name(power_offsets);
-  OffsetCalibration(*offsets)[3] = power_offsets ? &this->power_offset_phase_ : &this->offset_phase_;
-  ESPPreferenceObject *preference = power_offsets ? &this->power_offset_pref_ : &this->offset_pref_;
-  bool *has_stored =
-      power_offsets ? &this->has_stored_power_offset_calibration_ : &this->has_stored_offset_calibration_;
-  bool *restored = power_offsets ? &this->restored_power_offset_calibration_ : &this->restored_offset_calibration_;
-  bool *mismatches = power_offsets ? this->power_offset_calibration_mismatch_ : this->offset_calibration_mismatch_;
-
-  const bool writes_verified = this->verify_offset_writes_(type);
-  bool saved = false;
-  bool synced = false;
-  if (writes_verified) {
-    saved = preference->save(offsets);
-    synced = global_preferences->sync();
-  }
-
-  if (writes_verified && saved && synced) {
+  bool success = this->offset_pref_.save(&this->offset_phase_);
+  global_preferences->sync();
+  if (success) {
     this->using_saved_calibrations_ = true;
-    *has_stored = true;
-    *restored = true;
-    for (uint8_t phase = 0; phase < 3; phase++)
-      mismatches[phase] = false;
-    ESP_LOGI(TAG, "[CALIBRATION][%s] %s calibration saved to memory. %s calibration completed and verified.", cs,
-             LOG_STR_ARG(name), LOG_STR_ARG(name));
-    return;
+    this->restored_offset_calibration_ = true;
+    for (bool &phase : this->offset_calibration_mismatch_)
+      phase = false;
+    ESP_LOGI(TAG, "[CALIBRATION][%s] Offset calibration saved to memory.", cs);
+  } else {
+    this->using_saved_calibrations_ = false;
+    ESP_LOGE(TAG, "[CALIBRATION][%s] Failed to save offset calibration to memory!", cs);
   }
+}
 
-  if (writes_verified) {
-    ESP_LOGE(TAG, "[CALIBRATION][%s] Failed to save %s calibration to memory!", cs, LOG_STR_ARG(name));
+void ATM90E32Component::save_power_offset_calibration_to_memory_() {
+  const char *cs = this->get_calibration_id_();
+  bool success = this->power_offset_pref_.save(&this->power_offset_phase_);
+  global_preferences->sync();
+  if (success) {
+    this->using_saved_calibrations_ = true;
+    this->restored_power_offset_calibration_ = true;
+    for (bool &phase : this->power_offset_calibration_mismatch_)
+      phase = false;
+    ESP_LOGI(TAG, "[CALIBRATION][%s] Power offset calibration saved to memory.", cs);
+  } else {
+    this->using_saved_calibrations_ = false;
+    ESP_LOGE(TAG, "[CALIBRATION][%s] Failed to save power offset calibration to memory!", cs);
   }
-
-  for (uint8_t phase = 0; phase < 3; phase++) {
-    this->write_offsets_to_registers_(phase, previous[phase].first_offset, previous[phase].second_offset, type);
-  }
-  const bool rollback_verified = this->verify_offset_writes_(type);
-
-  bool rollback_persisted = false;
-  if (writes_verified) {
-    OffsetCalibration rollback[3]{};
-    prepare_offset_rollback(previous, previous_restored, rollback);
-    const bool rollback_saved = preference->save(&rollback);
-    const bool rollback_synced = global_preferences->sync();
-    rollback_persisted = rollback_saved && rollback_synced;
-    if (!rollback_saved || !rollback_synced) {
-      ESP_LOGE(TAG, "[CALIBRATION][%s] Failed to persist restored %s calibration values!", cs, LOG_STR_ARG(name));
-    }
-  }
-
-  *restored = previous_restored;
-  if (rollback_persisted)
-    *has_stored = previous_restored;
-  this->using_saved_calibrations_ = previous_using_saved;
-  if (!rollback_verified) {
-    ESP_LOGE(TAG, "[CALIBRATION][%s] %s calibration failed; rollback readback verification failed.", cs,
-             LOG_STR_ARG(name));
-    return;
-  }
-  ESP_LOGE(TAG, "[CALIBRATION][%s] %s calibration failed; previous values restored.", cs, LOG_STR_ARG(name));
 }
 
 void ATM90E32Component::run_offset_calibrations() {
@@ -835,16 +803,11 @@ void ATM90E32Component::run_offset_calibrations() {
   ESP_LOGI(TAG, "[CALIBRATION][%s] | Phase | offset_voltage | offset_current |", cs);
   ESP_LOGI(TAG, "[CALIBRATION][%s] ------------------------------------------------------------------", cs);
 
-  OffsetCalibration previous_offsets[3] = {this->offset_phase_[0], this->offset_phase_[1], this->offset_phase_[2]};
-  const bool previous_restored = this->restored_offset_calibration_;
-  const bool previous_using_saved = this->using_saved_calibrations_;
-
   for (uint8_t phase = 0; phase < 3; phase++) {
     int16_t voltage_offset = calibrate_offset(phase, true);
     int16_t current_offset = calibrate_offset(phase, false);
 
-    this->write_offsets_to_registers_(phase, voltage_offset, current_offset,
-                                      OffsetCalibrationType::OFFSET_CALIBRATION_TYPE_VOLTAGE_CURRENT);
+    this->write_offsets_to_registers_(phase, voltage_offset, current_offset);
 
     ESP_LOGI(TAG, "[CALIBRATION][%s] |   %c   |     %6d      |     %6d      |", cs, 'A' + phase, voltage_offset,
              current_offset);
@@ -852,8 +815,7 @@ void ATM90E32Component::run_offset_calibrations() {
 
   ESP_LOGI(TAG, "[CALIBRATION][%s] ==================================================================\n", cs);
 
-  this->finish_offset_calibration_(previous_offsets, previous_restored, previous_using_saved,
-                                   OffsetCalibrationType::OFFSET_CALIBRATION_TYPE_VOLTAGE_CURRENT);
+  this->save_offset_calibration_to_memory_();
 }
 
 void ATM90E32Component::run_power_offset_calibrations() {
@@ -872,25 +834,18 @@ void ATM90E32Component::run_power_offset_calibrations() {
   ESP_LOGI(TAG, "[CALIBRATION][%s] | Phase | offset_active_power | offset_reactive_power |", cs);
   ESP_LOGI(TAG, "[CALIBRATION][%s] ---------------------------------------------------------------------", cs);
 
-  OffsetCalibration previous_offsets[3] = {this->power_offset_phase_[0], this->power_offset_phase_[1],
-                                           this->power_offset_phase_[2]};
-  const bool previous_restored = this->restored_power_offset_calibration_;
-  const bool previous_using_saved = this->using_saved_calibrations_;
-
   for (uint8_t phase = 0; phase < 3; ++phase) {
     int16_t active_offset = calibrate_power_offset(phase, false);
     int16_t reactive_offset = calibrate_power_offset(phase, true);
 
-    this->write_offsets_to_registers_(phase, active_offset, reactive_offset,
-                                      OffsetCalibrationType::OFFSET_CALIBRATION_TYPE_POWER);
+    this->write_power_offsets_to_registers_(phase, active_offset, reactive_offset);
 
     ESP_LOGI(TAG, "[CALIBRATION][%s] |   %c   |       %6d        |        %6d        |", cs, 'A' + phase, active_offset,
              reactive_offset);
   }
   ESP_LOGI(TAG, "[CALIBRATION][%s] =====================================================================\n", cs);
 
-  this->finish_offset_calibration_(previous_offsets, previous_restored, previous_using_saved,
-                                   OffsetCalibrationType::OFFSET_CALIBRATION_TYPE_POWER);
+  this->save_power_offset_calibration_to_memory_();
 }
 
 void ATM90E32Component::write_gains_to_registers_() {
@@ -904,26 +859,35 @@ void ATM90E32Component::write_gains_to_registers_() {
   this->write16_(ATM90E32_REGISTER_CFGREGACCEN, 0x0000);
 }
 
-void ATM90E32Component::write_offsets_to_registers_(uint8_t phase, int16_t first_offset, int16_t second_offset,
-                                                    OffsetCalibrationType type) {
-  const bool power_offsets = type == OffsetCalibrationType::OFFSET_CALIBRATION_TYPE_POWER;
-  OffsetCalibration &offsets = power_offsets ? this->power_offset_phase_[phase] : this->offset_phase_[phase];
-  offsets.first_offset = first_offset;
-  offsets.second_offset = second_offset;
-  if (power_offsets) {
-    this->phase_[phase].active_power_offset_ = first_offset;
-    this->phase_[phase].reactive_power_offset_ = second_offset;
-  } else {
-    this->phase_[phase].voltage_offset_ = first_offset;
-    this->phase_[phase].current_offset_ = second_offset;
-  }
+void ATM90E32Component::write_offsets_to_registers_(uint8_t phase, int16_t voltage_offset, int16_t current_offset) {
+  // Save to runtime
+  this->offset_phase_[phase].voltage_offset_ = voltage_offset;
+  this->phase_[phase].voltage_offset_ = voltage_offset;
 
-  const uint16_t *first_registers = power_offsets ? this->power_offset_registers : this->voltage_offset_registers;
-  const uint16_t *second_registers =
-      power_offsets ? this->reactive_power_offset_registers : this->current_offset_registers;
+  // Save to flash-storable struct
+  this->offset_phase_[phase].current_offset_ = current_offset;
+  this->phase_[phase].current_offset_ = current_offset;
+
+  // Write to registers
   this->write16_(ATM90E32_REGISTER_CFGREGACCEN, 0x55AA);
-  this->write16_(first_registers[phase], static_cast<uint16_t>(first_offset));
-  this->write16_(second_registers[phase], static_cast<uint16_t>(second_offset));
+  this->write16_(voltage_offset_registers[phase], static_cast<uint16_t>(voltage_offset));
+  this->write16_(current_offset_registers[phase], static_cast<uint16_t>(current_offset));
+  this->write16_(ATM90E32_REGISTER_CFGREGACCEN, 0x0000);
+}
+
+void ATM90E32Component::write_power_offsets_to_registers_(uint8_t phase, int16_t p_offset, int16_t q_offset) {
+  // Save to runtime
+  this->phase_[phase].active_power_offset_ = p_offset;
+  this->phase_[phase].reactive_power_offset_ = q_offset;
+
+  // Save to flash-storable struct
+  this->power_offset_phase_[phase].active_power_offset = p_offset;
+  this->power_offset_phase_[phase].reactive_power_offset = q_offset;
+
+  // Write to registers
+  this->write16_(ATM90E32_REGISTER_CFGREGACCEN, 0x55AA);
+  this->write16_(this->power_offset_registers[phase], static_cast<uint16_t>(p_offset));
+  this->write16_(this->reactive_power_offset_registers[phase], static_cast<uint16_t>(q_offset));
   this->write16_(ATM90E32_REGISTER_CFGREGACCEN, 0x0000);
 }
 
@@ -983,78 +947,89 @@ void ATM90E32Component::restore_gain_calibrations_() {
   ESP_LOGW(TAG, "[CALIBRATION][%s] No stored gain calibrations found. Using config file values.", cs);
 }
 
-void ATM90E32Component::restore_offset_calibrations_(OffsetCalibrationType type) {
-  const bool power_offsets = type == OffsetCalibrationType::OFFSET_CALIBRATION_TYPE_POWER;
+void ATM90E32Component::restore_offset_calibrations_() {
   const char *cs = this->get_calibration_id_();
-  const LogString *name = power_offsets ? LOG_STR("power offset") : LOG_STR("offset");
-  OffsetCalibration(*offsets)[3] = power_offsets ? &this->power_offset_phase_ : &this->offset_phase_;
-  OffsetCalibration(*config_offsets)[3] =
-      power_offsets ? &this->config_power_offset_phase_ : &this->config_offset_phase_;
-  ESPPreferenceObject *preference = power_offsets ? &this->power_offset_pref_ : &this->offset_pref_;
-  bool *has_stored =
-      power_offsets ? &this->has_stored_power_offset_calibration_ : &this->has_stored_offset_calibration_;
-  bool *restored = power_offsets ? &this->restored_power_offset_calibration_ : &this->restored_offset_calibration_;
-  bool *mismatches = power_offsets ? this->power_offset_calibration_mismatch_ : this->offset_calibration_mismatch_;
-  const bool *has_first = power_offsets ? this->has_config_active_power_offset_ : this->has_config_voltage_offset_;
-  const bool *has_second = power_offsets ? this->has_config_reactive_power_offset_ : this->has_config_current_offset_;
-
   for (uint8_t i = 0; i < 3; ++i)
-    (*config_offsets)[i] = (*offsets)[i];
+    this->config_offset_phase_[i] = this->offset_phase_[i];
+
+  bool have_data = this->offset_pref_.load(&this->offset_phase_);
 
-  const bool have_data = preference->load(offsets);
   bool all_zero = true;
   if (have_data) {
-    for (const auto &phase : *offsets) {
-      if (phase.first_offset != 0 || phase.second_offset != 0) {
+    for (auto &phase : this->offset_phase_) {
+      if (phase.voltage_offset_ != 0 || phase.current_offset_ != 0) {
         all_zero = false;
         break;
       }
     }
   }
 
-  *has_stored = have_data && !all_zero;
-  *restored = false;
+  if (have_data && !all_zero) {
+    this->restored_offset_calibration_ = true;
+    for (uint8_t phase = 0; phase < 3; phase++) {
+      auto &offset = this->offset_phase_[phase];
+      bool mismatch = false;
+      if (this->has_config_voltage_offset_[phase] &&
+          offset.voltage_offset_ != this->config_offset_phase_[phase].voltage_offset_)
+        mismatch = true;
+      if (this->has_config_current_offset_[phase] &&
+          offset.current_offset_ != this->config_offset_phase_[phase].current_offset_)
+        mismatch = true;
+      if (mismatch)
+        this->offset_calibration_mismatch_[phase] = true;
+    }
+  } else {
+    for (uint8_t phase = 0; phase < 3; phase++)
+      this->offset_phase_[phase] = this->config_offset_phase_[phase];
+    ESP_LOGW(TAG, "[CALIBRATION][%s] No stored offset calibrations found. Using default values.", cs);
+  }
+
   for (uint8_t phase = 0; phase < 3; phase++) {
-    mismatches[phase] = false;
-    if (*has_stored) {
-      mismatches[phase] =
-          (has_first[phase] && (*offsets)[phase].first_offset != (*config_offsets)[phase].first_offset) ||
-          (has_second[phase] && (*offsets)[phase].second_offset != (*config_offsets)[phase].second_offset);
+    write_offsets_to_registers_(phase, this->offset_phase_[phase].voltage_offset_,
+                                this->offset_phase_[phase].current_offset_);
+  }
+}
+
+void ATM90E32Component::restore_power_offset_calibrations_() {
+  const char *cs = this->get_calibration_id_();
+  for (uint8_t i = 0; i < 3; ++i)
+    this->config_power_offset_phase_[i] = this->power_offset_phase_[i];
+
+  bool have_data = this->power_offset_pref_.load(&this->power_offset_phase_);
+
+  bool all_zero = true;
+  if (have_data) {
+    for (auto &phase : this->power_offset_phase_) {
+      if (phase.active_power_offset != 0 || phase.reactive_power_offset != 0) {
+        all_zero = false;
+        break;
+      }
     }
   }
 
-  if (!*has_stored) {
-    for (uint8_t phase = 0; phase < 3; phase++)
-      (*offsets)[phase] = (*config_offsets)[phase];
-    ESP_LOGW(TAG, "[CALIBRATION][%s] No stored %s calibrations found. Using default values.", cs, LOG_STR_ARG(name));
-  }
-
-  for (uint8_t phase = 0; phase < 3; phase++) {
-    this->write_offsets_to_registers_(phase, (*offsets)[phase].first_offset, (*offsets)[phase].second_offset, type);
-  }
-  const bool initial_values_verified = this->verify_offset_writes_(type);
-  if (initial_values_verified) {
-    const auto state = resolve_offset_restore_state(*has_stored, true, false);
-    *restored = state.restored;
-    ESP_LOGI(TAG, "[CALIBRATION][%s] %s calibration values verified.", cs, LOG_STR_ARG(name));
-    return;
-  }
-
-  this->using_saved_calibrations_ = false;
-  for (uint8_t phase = 0; phase < 3; phase++)
-    mismatches[phase] = false;
-  for (uint8_t phase = 0; phase < 3; phase++) {
-    (*offsets)[phase] = (*config_offsets)[phase];
-    this->write_offsets_to_registers_(phase, (*offsets)[phase].first_offset, (*offsets)[phase].second_offset, type);
-  }
-  const auto state = resolve_offset_restore_state(*has_stored, false, this->verify_offset_writes_(type));
-  *restored = state.restored;
-  if (state.values_verified) {
-    ESP_LOGE(TAG, "[CALIBRATION][%s] %s calibration restore failed verification; config values verified.", cs,
-             LOG_STR_ARG(name));
+  if (have_data && !all_zero) {
+    this->restored_power_offset_calibration_ = true;
+    for (uint8_t phase = 0; phase < 3; ++phase) {
+      auto &offset = this->power_offset_phase_[phase];
+      bool mismatch = false;
+      if (this->has_config_active_power_offset_[phase] &&
+          offset.active_power_offset != this->config_power_offset_phase_[phase].active_power_offset)
+        mismatch = true;
+      if (this->has_config_reactive_power_offset_[phase] &&
+          offset.reactive_power_offset != this->config_power_offset_phase_[phase].reactive_power_offset)
+        mismatch = true;
+      if (mismatch)
+        this->power_offset_calibration_mismatch_[phase] = true;
+    }
   } else {
-    ESP_LOGE(TAG, "[CALIBRATION][%s] %s calibration restore and config fallback both failed verification.", cs,
-             LOG_STR_ARG(name));
+    for (uint8_t phase = 0; phase < 3; ++phase)
+      this->power_offset_phase_[phase] = this->config_power_offset_phase_[phase];
+    ESP_LOGW(TAG, "[CALIBRATION][%s] No stored power offsets found. Using default values.", cs);
+  }
+
+  for (uint8_t phase = 0; phase < 3; ++phase) {
+    write_power_offsets_to_registers_(phase, this->power_offset_phase_[phase].active_power_offset,
+                                      this->power_offset_phase_[phase].reactive_power_offset);
   }
 }
 
@@ -1109,14 +1084,14 @@ void ATM90E32Component::clear_gain_calibrations() {
 
 void ATM90E32Component::clear_offset_calibrations() {
   const char *cs = this->get_calibration_id_();
-  if (!this->has_stored_offset_calibration_) {
+  if (!this->restored_offset_calibration_) {
     ESP_LOGI(TAG, "[CALIBRATION][%s] No stored offset calibrations to clear. Current values:", cs);
     ESP_LOGI(TAG, "[CALIBRATION][%s] --------------------------------------------------------------", cs);
     ESP_LOGI(TAG, "[CALIBRATION][%s] | Phase | offset_voltage | offset_current |", cs);
     ESP_LOGI(TAG, "[CALIBRATION][%s] --------------------------------------------------------------", cs);
     for (uint8_t phase = 0; phase < 3; phase++) {
       ESP_LOGI(TAG, "[CALIBRATION][%s] |   %c   |     %6d      |     %6d      |", cs, 'A' + phase,
-               this->offset_phase_[phase].first_offset, this->offset_phase_[phase].second_offset);
+               this->offset_phase_[phase].voltage_offset_, this->offset_phase_[phase].current_offset_);
     }
     ESP_LOGI(TAG, "[CALIBRATION][%s] ==============================================================\n", cs);
     return;
@@ -1129,11 +1104,10 @@ void ATM90E32Component::clear_offset_calibrations() {
 
   for (uint8_t phase = 0; phase < 3; phase++) {
     int16_t voltage_offset =
-        this->has_config_voltage_offset_[phase] ? this->config_offset_phase_[phase].first_offset : 0;
+        this->has_config_voltage_offset_[phase] ? this->config_offset_phase_[phase].voltage_offset_ : 0;
     int16_t current_offset =
-        this->has_config_current_offset_[phase] ? this->config_offset_phase_[phase].second_offset : 0;
-    this->write_offsets_to_registers_(phase, voltage_offset, current_offset,
-                                      OffsetCalibrationType::OFFSET_CALIBRATION_TYPE_VOLTAGE_CURRENT);
+        this->has_config_current_offset_[phase] ? this->config_offset_phase_[phase].current_offset_ : 0;
+    this->write_offsets_to_registers_(phase, voltage_offset, current_offset);
     ESP_LOGI(TAG, "[CALIBRATION][%s] |   %c   |     %6d      |     %6d      |", cs, 'A' + phase, voltage_offset,
              current_offset);
   }
@@ -1143,7 +1117,6 @@ void ATM90E32Component::clear_offset_calibrations() {
   this->offset_pref_.save(&zero_offsets);  // Clear stored values in flash
   global_preferences->sync();
 
-  this->has_stored_offset_calibration_ = false;
   this->restored_offset_calibration_ = false;
   for (bool &phase : this->offset_calibration_mismatch_)
     phase = false;
@@ -1153,14 +1126,15 @@ void ATM90E32Component::clear_offset_calibrations() {
 
 void ATM90E32Component::clear_power_offset_calibrations() {
   const char *cs = this->get_calibration_id_();
-  if (!this->has_stored_power_offset_calibration_) {
+  if (!this->restored_power_offset_calibration_) {
     ESP_LOGI(TAG, "[CALIBRATION][%s] No stored power offsets to clear. Current values:", cs);
     ESP_LOGI(TAG, "[CALIBRATION][%s] ---------------------------------------------------------------------", cs);
     ESP_LOGI(TAG, "[CALIBRATION][%s] | Phase | offset_active_power | offset_reactive_power |", cs);
     ESP_LOGI(TAG, "[CALIBRATION][%s] ---------------------------------------------------------------------", cs);
     for (uint8_t phase = 0; phase < 3; phase++) {
       ESP_LOGI(TAG, "[CALIBRATION][%s] |   %c   |       %6d        |        %6d        |", cs, 'A' + phase,
-               this->power_offset_phase_[phase].first_offset, this->power_offset_phase_[phase].second_offset);
+               this->power_offset_phase_[phase].active_power_offset,
+               this->power_offset_phase_[phase].reactive_power_offset);
     }
     ESP_LOGI(TAG, "[CALIBRATION][%s] =====================================================================\n", cs);
     return;
@@ -1173,21 +1147,20 @@ void ATM90E32Component::clear_power_offset_calibrations() {
 
   for (uint8_t phase = 0; phase < 3; phase++) {
     int16_t active_offset =
-        this->has_config_active_power_offset_[phase] ? this->config_power_offset_phase_[phase].first_offset : 0;
-    int16_t reactive_offset =
-        this->has_config_reactive_power_offset_[phase] ? this->config_power_offset_phase_[phase].second_offset : 0;
-    this->write_offsets_to_registers_(phase, active_offset, reactive_offset,
-                                      OffsetCalibrationType::OFFSET_CALIBRATION_TYPE_POWER);
+        this->has_config_active_power_offset_[phase] ? this->config_power_offset_phase_[phase].active_power_offset : 0;
+    int16_t reactive_offset = this->has_config_reactive_power_offset_[phase]
+                                  ? this->config_power_offset_phase_[phase].reactive_power_offset
+                                  : 0;
+    this->write_power_offsets_to_registers_(phase, active_offset, reactive_offset);
     ESP_LOGI(TAG, "[CALIBRATION][%s] |   %c   |       %6d        |        %6d        |", cs, 'A' + phase, active_offset,
              reactive_offset);
   }
   ESP_LOGI(TAG, "[CALIBRATION][%s] =====================================================================\n", cs);
 
-  OffsetCalibration zero_power_offsets[3]{{0, 0}, {0, 0}, {0, 0}};
+  PowerOffsetCalibration zero_power_offsets[3]{{0, 0}, {0, 0}, {0, 0}};
   this->power_offset_pref_.save(&zero_power_offsets);
   global_preferences->sync();
 
-  this->has_stored_power_offset_calibration_ = false;
   this->restored_power_offset_calibration_ = false;
   for (bool &phase : this->power_offset_calibration_mismatch_)
     phase = false;
@@ -1242,31 +1215,6 @@ bool ATM90E32Component::verify_gain_writes_() {
   return success;  // Return true if all writes were successful, false otherwise
 }
 
-bool ATM90E32Component::verify_offset_writes_(OffsetCalibrationType type) {
-  const bool power_offsets = type == OffsetCalibrationType::OFFSET_CALIBRATION_TYPE_POWER;
-  const char *cs = this->get_calibration_id_();
-  const LogString *name = offset_calibration_name(power_offsets);
-  const LogString *first_name = power_offsets ? LOG_STR("active") : LOG_STR("voltage");
-  const LogString *second_name = power_offsets ? LOG_STR("reactive") : LOG_STR("current");
-  const OffsetCalibration *offsets = power_offsets ? this->power_offset_phase_ : this->offset_phase_;
-  const uint16_t *first_registers = power_offsets ? this->power_offset_registers : this->voltage_offset_registers;
-  const uint16_t *second_registers =
-      power_offsets ? this->reactive_power_offset_registers : this->current_offset_registers;
-  bool success = true;
-  for (uint8_t phase = 0; phase < 3; phase++) {
-    const uint16_t first = this->read16_(first_registers[phase]);
-    const uint16_t second = this->read16_(second_registers[phase]);
-    if (!offset_register_value_matches(first, offsets[phase].first_offset) ||
-        !offset_register_value_matches(second, offsets[phase].second_offset)) {
-      ESP_LOGE(TAG, "[CALIBRATION][%s] %s readback failed for Phase %s: %s %d/%d, %s %d/%d.", cs, LOG_STR_ARG(name),
-               phase_labels[phase], LOG_STR_ARG(first_name), static_cast<int16_t>(first), offsets[phase].first_offset,
-               LOG_STR_ARG(second_name), static_cast<int16_t>(second), offsets[phase].second_offset);
-      success = false;
-    }
-  }
-  return success;
-}
-
 #ifdef USE_TEXT_SENSOR
 void ATM90E32Component::check_phase_status() {
   uint16_t state0 = this->read16_(ATM90E32_REGISTER_EMMSTATE0);

esphome/components/atm90e32/atm90e32.h

@@ -13,40 +13,6 @@
 
 namespace esphome::atm90e32 {
 
-inline bool offset_register_value_matches(uint16_t actual, int16_t expected) {
-  return actual == static_cast<uint16_t>(expected);
-}
-
-struct OffsetCalibration {
-  int16_t first_offset{0};
-  int16_t second_offset{0};
-};
-
-static_assert(sizeof(OffsetCalibration[3]) == 12, "Offset calibration preference layout must remain compatible");
-
-enum class OffsetCalibrationType : uint8_t {
-  OFFSET_CALIBRATION_TYPE_VOLTAGE_CURRENT,
-  OFFSET_CALIBRATION_TYPE_POWER,
-};
-
-struct OffsetRestoreState {
-  bool restored;
-  bool values_verified;
-};
-
-inline OffsetRestoreState resolve_offset_restore_state(bool has_stored_values, bool initial_values_verified,
-                                                       bool fallback_values_verified) {
-  if (initial_values_verified)
-    return {has_stored_values, true};
-  return {false, fallback_values_verified};
-}
-
-inline void prepare_offset_rollback(const OffsetCalibration (&previous)[3], bool had_stored_values,
-                                    OffsetCalibration (&rollback)[3]) {
-  for (uint8_t phase = 0; phase < 3; phase++)
-    rollback[phase] = had_stored_values ? previous[phase] : OffsetCalibration{};
-}
-
 class ATM90E32Component final : public PollingComponent,
                                 public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_HIGH,
                                                       spi::CLOCK_PHASE_TRAILING, spi::DATA_RATE_1MHZ> {
@@ -105,19 +71,19 @@ class ATM90E32Component final : public PollingComponent,
     this->has_config_current_gain_[phase] = true;
   }
   void set_voltage_offset(uint8_t phase, int16_t offset) {
-    this->offset_phase_[phase].first_offset = offset;
+    this->offset_phase_[phase].voltage_offset_ = offset;
     this->has_config_voltage_offset_[phase] = true;
   }
   void set_current_offset(uint8_t phase, int16_t offset) {
-    this->offset_phase_[phase].second_offset = offset;
+    this->offset_phase_[phase].current_offset_ = offset;
     this->has_config_current_offset_[phase] = true;
   }
   void set_active_power_offset(uint8_t phase, int16_t offset) {
-    this->power_offset_phase_[phase].first_offset = offset;
+    this->power_offset_phase_[phase].active_power_offset = offset;
     this->has_config_active_power_offset_[phase] = true;
   }
   void set_reactive_power_offset(uint8_t phase, int16_t offset) {
-    this->power_offset_phase_[phase].second_offset = offset;
+    this->power_offset_phase_[phase].reactive_power_offset = offset;
     this->has_config_reactive_power_offset_[phase] = true;
   }
   void set_freq_sensor(sensor::Sensor *freq_sensor) { freq_sensor_ = freq_sensor; }
@@ -205,16 +171,16 @@ class ATM90E32Component final : public PollingComponent,
   float get_chip_temperature_();
   bool get_publish_interval_flag_() { return publish_interval_flag_; };
   void set_publish_interval_flag_(bool flag) { publish_interval_flag_ = flag; };
-  void restore_offset_calibrations_(OffsetCalibrationType type);
+  void restore_offset_calibrations_();
+  void restore_power_offset_calibrations_();
   void restore_gain_calibrations_();
+  void save_offset_calibration_to_memory_();
   void save_gain_calibration_to_memory_();
-  void finish_offset_calibration_(const OffsetCalibration (&previous)[3], bool previous_restored,
-                                  bool previous_using_saved, OffsetCalibrationType type);
-  void write_offsets_to_registers_(uint8_t phase, int16_t first_offset, int16_t second_offset,
-                                   OffsetCalibrationType type);
+  void save_power_offset_calibration_to_memory_();
+  void write_offsets_to_registers_(uint8_t phase, int16_t voltage_offset, int16_t current_offset);
+  void write_power_offsets_to_registers_(uint8_t phase, int16_t p_offset, int16_t q_offset);
   void write_gains_to_registers_();
   bool verify_gain_writes_();
-  bool verify_offset_writes_(OffsetCalibrationType type);
   bool validate_spi_read_(uint16_t expected, const char *context = nullptr);
   void log_calibration_status_();
   const char *get_calibration_id_();
@@ -253,10 +219,19 @@ class ATM90E32Component final : public PollingComponent,
     uint32_t cumulative_reverse_active_energy_{0};
   } phase_[3];
 
-  OffsetCalibration offset_phase_[3];
+  struct OffsetCalibration {
+    int16_t voltage_offset_{0};
+    int16_t current_offset_{0};
+  } offset_phase_[3];
+
   OffsetCalibration config_offset_phase_[3];
-  OffsetCalibration power_offset_phase_[3];
-  OffsetCalibration config_power_offset_phase_[3];
+
+  struct PowerOffsetCalibration {
+    int16_t active_power_offset{0};
+    int16_t reactive_power_offset{0};
+  } power_offset_phase_[3];
+
+  PowerOffsetCalibration config_power_offset_phase_[3];
 
   struct GainCalibration {
     uint16_t voltage_gain{1};
@@ -290,8 +265,6 @@ class ATM90E32Component final : public PollingComponent,
   bool enable_offset_calibration_{false};
   bool enable_gain_calibration_{false};
   const char *instance_id_{nullptr};
-  bool has_stored_offset_calibration_{false};
-  bool has_stored_power_offset_calibration_{false};
   bool restored_offset_calibration_{false};
   bool restored_power_offset_calibration_{false};
   bool restored_gain_calibration_{false};

esphome/components/audio/__init__.py

@@ -7,7 +7,6 @@ from esphome.components.esp32 import (
     add_idf_component,
     add_idf_sdkconfig_option,
     include_builtin_idf_component,
-    require_certificate_bundle,
 )
 import esphome.config_validation as cv
 from esphome.const import (
@@ -336,10 +335,11 @@ def _emit_memory_pair(value: str | None, psram_key: str, internal_key: str) -> N
 async def to_code(config: ConfigType) -> None:
     # Re-enable ESP-IDF's HTTP client (excluded by default to save compile time)
     include_builtin_idf_component("esp_http_client")
-    # HTTPS streams verify the server against the root certificate bundle
-    require_certificate_bundle()
 
-    add_idf_component(name="esphome/esp-audio-libs", ref="4.0.1")
+    add_idf_component(
+        name="esphome/esp-audio-libs",
+        ref="3.2.1",
+    )
 
     data = _get_data()
 

esphome/components/audio/audio_decoder.cpp

@@ -313,10 +313,9 @@ FileDecoderState AudioDecoder::decode_mp3_() {
       this->output_transfer_buffer_->increase_buffer_length(
           this->audio_stream_info_.value().frames_to_bytes(samples_decoded));
     }
-  } else if (result == micro_mp3::MP3_STREAM_INFO_READY || result == micro_mp3::MP3_STREAM_INFO_CHANGED) {
-    // Header parsed: capture stream info and resize the output buffer to fit one full frame.
-    // microMP3 always outputs 16-bit PCM. MP3_STREAM_INFO_CHANGED is handled identically: despite its
-    // negative value it is documented as recoverable, so it must not reach the catch-all below.
+  } else if (result == micro_mp3::MP3_STREAM_INFO_READY) {
+    // First successful header parse: capture stream info and resize the output buffer to fit one full frame.
+    // microMP3 always outputs 16-bit PCM.
     this->audio_stream_info_ =
         audio::AudioStreamInfo(16, this->mp3_decoder_->get_channels(), this->mp3_decoder_->get_sample_rate());
     this->free_buffer_required_ =

esphome/components/audio/audio_reader.cpp

@@ -58,9 +58,6 @@ esp_err_t AudioReader::add_sink(const std::weak_ptr<ring_buffer::RingBuffer> &ou
   if (current_audio_file_ != nullptr) {
     // A transfer buffer isn't ncessary for a local file
     this->file_ring_buffer_ = output_ring_buffer.lock();
-    if (this->file_ring_buffer_ == nullptr) {
-      return ESP_ERR_INVALID_STATE;
-    }
     return ESP_OK;
   }
 

esphome/components/audio/audio_transfer_buffer.cpp

@@ -51,14 +51,14 @@ void AudioTransferBuffer::increase_buffer_length(size_t bytes) { this->buffer_le
 
 void AudioTransferBuffer::clear_buffered_data() {
   this->buffer_length_ = 0;
-  if (this->ring_buffer_ != nullptr) {
+  if (this->ring_buffer_.use_count() > 0) {
     this->ring_buffer_->reset();
   }
 }
 
 void AudioSinkTransferBuffer::clear_buffered_data() {
   this->buffer_length_ = 0;
-  if (this->ring_buffer_ != nullptr) {
+  if (this->ring_buffer_.use_count() > 0) {
     this->ring_buffer_->reset();
   }
 #ifdef USE_SPEAKER
@@ -69,7 +69,7 @@ void AudioSinkTransferBuffer::clear_buffered_data() {
 }
 
 bool AudioTransferBuffer::has_buffered_data() const {
-  if (this->ring_buffer_ != nullptr) {
+  if (this->ring_buffer_.use_count() > 0) {
     return ((this->ring_buffer_->available() > 0) || (this->available() > 0));
   }
   return (this->available() > 0);
@@ -144,7 +144,7 @@ size_t AudioSourceTransferBuffer::transfer_data_from_source(TickType_t ticks_to_
   size_t bytes_to_read = AudioTransferBuffer::free();
   size_t bytes_read = 0;
   if (bytes_to_read > 0) {
-    if (this->ring_buffer_ != nullptr) {
+    if (this->ring_buffer_.use_count() > 0) {
       bytes_read = this->ring_buffer_->read((void *) this->get_buffer_end(), bytes_to_read, ticks_to_wait);
     }
 
@@ -161,7 +161,7 @@ size_t AudioSinkTransferBuffer::transfer_data_to_sink(TickType_t ticks_to_wait,
       bytes_written = this->speaker_->play(this->data_start_, this->available(), ticks_to_wait);
     } else
 #endif
-        if (this->ring_buffer_ != nullptr) {
+        if (this->ring_buffer_.use_count() > 0) {
       bytes_written =
           this->ring_buffer_->write_without_replacement((void *) this->data_start_, this->available(), ticks_to_wait);
     } else if (this->sink_callback_ != nullptr) {
@@ -186,7 +186,7 @@ bool AudioSinkTransferBuffer::has_buffered_data() const {
     return (this->speaker_->has_buffered_data() || (this->available() > 0));
   }
 #endif
-  if (this->ring_buffer_ != nullptr) {
+  if (this->ring_buffer_.use_count() > 0) {
     return ((this->ring_buffer_->available() > 0) || (this->available() > 0));
   }
   return (this->available() > 0);

esphome/components/audio_http/audio_http_media_source.cpp

@@ -30,9 +30,8 @@ void AudioHTTPMediaSource::dump_config() {
   ESP_LOGCONFIG(TAG,
                 "Audio HTTP Media Source:\n"
                 "  Buffer Size: %zu bytes\n"
-                "  Persistent Ring Buffer: %s\n"
                 "  Decoder Task Stack in PSRAM: %s",
-                this->buffer_size_, YESNO(this->persistent_ring_buffer_), YESNO(this->decoder_task_stack_in_psram_));
+                this->buffer_size_, YESNO(this->decoder_task_stack_in_psram_));
 }
 
 void AudioHTTPMediaSource::setup() {
@@ -40,7 +39,6 @@ void AudioHTTPMediaSource::setup() {
 
   micro_decoder::DecoderConfig config;
   config.ring_buffer_size = this->buffer_size_;
-  config.persistent_ring_buffer = this->persistent_ring_buffer_;
   // Keep the transfer buffer smaller than the ring buffer so the reader can top up the ring
   // while the decoder is still draining it, instead of oscillating between empty and full.
   config.transfer_buffer_size = std::min(DEFAULT_TRANSFER_BUFFER_SIZE, this->buffer_size_ / 2);

esphome/components/audio_http/audio_http_media_source.h

@@ -33,7 +33,6 @@ class AudioHTTPMediaSource final : public Component,
 
   void set_buffer_size(size_t buffer_size) { this->buffer_size_ = buffer_size; }
   void set_task_stack_in_psram(bool task_stack_in_psram) { this->decoder_task_stack_in_psram_ = task_stack_in_psram; }
-  void set_persistent_ring_buffer(bool persistent) { this->persistent_ring_buffer_ = persistent; }
 
   // MediaSource interface implementation
   bool play_uri(const std::string &uri) override;
@@ -55,7 +54,6 @@ class AudioHTTPMediaSource final : public Component,
   // on_audio_write(). Must be atomic to avoid a data race.
   std::atomic<bool> pause_{false};
   bool decoder_task_stack_in_psram_{false};
-  bool persistent_ring_buffer_{false};
 };
 
 }  // namespace esphome::audio_http

esphome/components/audio_http/media_source.py

@@ -7,8 +7,6 @@ from esphome.types import ConfigType
 CODEOWNERS = ["@kahrendt"]
 AUTO_LOAD = ["audio"]
 
-CONF_PERSISTENT_RING_BUFFER = "persistent_ring_buffer"
-
 audio_http_ns = cg.esphome_ns.namespace("audio_http")
 AudioHTTPMediaSource = audio_http_ns.class_(
     "AudioHTTPMediaSource", cg.Component, media_source.MediaSource
@@ -30,7 +28,6 @@ CONFIG_SCHEMA = cv.All(
                 min=5000, max=1000000
             ),
             cv.Optional(CONF_TASK_STACK_IN_PSRAM): psram.validate_task_stack_in_psram,
-            cv.Optional(CONF_PERSISTENT_RING_BUFFER, default=False): cv.boolean,
         }
     )
     .extend(cv.COMPONENT_SCHEMA),
@@ -48,4 +45,3 @@ async def to_code(config: ConfigType) -> None:
         cg.add(var.set_task_stack_in_psram(True))
         psram.request_external_task_stack()
     cg.add(var.set_buffer_size(config[CONF_BUFFER_SIZE]))
-    cg.add(var.set_persistent_ring_buffer(config[CONF_PERSISTENT_RING_BUFFER]))

esphome/components/bang_bang/bang_bang_climate.cpp

@@ -203,10 +203,16 @@ void BangBangClimate::set_away_config(const BangBangClimateTargetTempConfig &awa
   this->away_config_ = away_config;
 }
 
+void BangBangClimate::set_sensor(sensor::Sensor *sensor) { this->sensor_ = sensor; }
+void BangBangClimate::set_humidity_sensor(sensor::Sensor *humidity_sensor) { this->humidity_sensor_ = humidity_sensor; }
+
 Trigger<> *BangBangClimate::get_idle_trigger() { return &this->idle_trigger_; }
 Trigger<> *BangBangClimate::get_cool_trigger() { return &this->cool_trigger_; }
 Trigger<> *BangBangClimate::get_heat_trigger() { return &this->heat_trigger_; }
 
+void BangBangClimate::set_supports_cool(bool supports_cool) { this->supports_cool_ = supports_cool; }
+void BangBangClimate::set_supports_heat(bool supports_heat) { this->supports_heat_ = supports_heat; }
+
 void BangBangClimate::dump_config() {
   LOG_CLIMATE("", "Bang Bang Climate", this);
   ESP_LOGCONFIG(TAG,

esphome/components/bang_bang/bang_bang_climate.h

@@ -22,10 +22,10 @@ class BangBangClimate final : public climate::Climate, public Component {
   void setup() override;
   void dump_config() override;
 
-  void set_sensor(sensor::Sensor *sensor) { this->sensor_ = sensor; }
-  void set_humidity_sensor(sensor::Sensor *humidity_sensor) { this->humidity_sensor_ = humidity_sensor; }
-  void set_supports_cool(bool supports_cool) { this->supports_cool_ = supports_cool; }
-  void set_supports_heat(bool supports_heat) { this->supports_heat_ = supports_heat; }
+  void set_sensor(sensor::Sensor *sensor);
+  void set_humidity_sensor(sensor::Sensor *humidity_sensor);
+  void set_supports_cool(bool supports_cool);
+  void set_supports_heat(bool supports_heat);
   void set_normal_config(const BangBangClimateTargetTempConfig &normal_config);
   void set_away_config(const BangBangClimateTargetTempConfig &away_config);
 

esphome/components/binary/light/binary_light_output.h

@@ -17,7 +17,11 @@ class BinaryLightOutput final : public light::LightOutput {
   void write_state(light::LightState *state) override {
     bool binary;
     state->current_values_as_binary(&binary);
-    this->output_->set_state(binary);
+    if (binary) {
+      this->output_->turn_on();
+    } else {
+      this->output_->turn_off();
+    }
   }
 
  protected:

esphome/components/binary_sensor/__init__.py

@@ -39,7 +39,6 @@ from esphome.const import (
     DEVICE_CLASS_EMPTY,
     DEVICE_CLASS_GARAGE_DOOR,
     DEVICE_CLASS_GAS,
-    DEVICE_CLASS_GLASS_BREAK,
     DEVICE_CLASS_HEAT,
     DEVICE_CLASS_LIGHT,
     DEVICE_CLASS_LOCK,
@@ -82,7 +81,6 @@ DEVICE_CLASSES = [
     DEVICE_CLASS_EMPTY,
     DEVICE_CLASS_GARAGE_DOOR,
     DEVICE_CLASS_GAS,
-    DEVICE_CLASS_GLASS_BREAK,
     DEVICE_CLASS_HEAT,
     DEVICE_CLASS_LIGHT,
     DEVICE_CLASS_LOCK,
@@ -454,9 +452,7 @@ _BINARY_SENSOR_SCHEMA = (
             cv.Optional(
                 CONF_DEVICE_CLASS, visibility=cv.Visibility.ADVANCED
             ): validate_device_class,
-            cv.Optional(
-                CONF_FILTERS, visibility=cv.Visibility.ADVANCED
-            ): validate_filters,
+            cv.Optional(CONF_FILTERS): validate_filters,
             cv.Optional(CONF_ON_PRESS): automation.validate_automation({}),
             cv.Optional(CONF_ON_RELEASE): automation.validate_automation({}),
             cv.Optional(CONF_ON_CLICK): cv.All(

esphome/components/binary_sensor/automation.cpp

@@ -100,15 +100,13 @@ void MultiClickTriggerBase::schedule_is_valid_(uint32_t min_length) {
   }
   this->is_valid_ = false;
   this->set_timeout(MULTICLICK_IS_VALID_ID, min_length, [this]() {
-    ESP_LOGV(TAG, "Multi Click: You can now %s the button.",
-             this->parent_->state ? LOG_STR_LITERAL("RELEASE") : LOG_STR_LITERAL("PRESS"));
+    ESP_LOGV(TAG, "Multi Click: You can now %s the button.", this->parent_->state ? "RELEASE" : "PRESS");
     this->is_valid_ = true;
   });
 }
 void MultiClickTriggerBase::schedule_is_not_valid_(uint32_t max_length) {
   this->set_timeout(MULTICLICK_IS_NOT_VALID_ID, max_length, [this]() {
-    ESP_LOGV(TAG, "Multi Click: You waited too long to %s.",
-             this->parent_->state ? LOG_STR_LITERAL("RELEASE") : LOG_STR_LITERAL("PRESS"));
+    ESP_LOGV(TAG, "Multi Click: You waited too long to %s.", this->parent_->state ? "RELEASE" : "PRESS");
     this->is_valid_ = false;
     this->schedule_cooldown_();
   });

esphome/components/binary_sensor/binary_sensor.h

@@ -32,8 +32,7 @@ void log_binary_sensor(const char *tag, const char *prefix, const char *type, Bi
  */
 class BinarySensor : public StatefulEntityBase<bool> {
  public:
-  // User provided, not "= default": `new(p) BinarySensor()` would zero-fill .bss that is already zero.
-  explicit BinarySensor() {}
+  explicit BinarySensor() = default;
 
   const bool &get_state() const override { return this->state; }
   void set_trigger_on_initial_state(bool value) { this->trigger_on_initial_state_ = value; }

esphome/components/binary_sensor/filter.h

@@ -53,9 +53,6 @@ class DelayedOnOffFilter final : public Filter {
 
 class DelayedOnFilter : public Filter {
  public:
-  // User provided, not "= default": `new(p) DelayedOnFilter()` would zero-fill .bss that is already zero.
-  DelayedOnFilter() {}
-
   optional<bool> new_value(bool value) override;
 
   template<typename T> void set_delay(T delay) { this->delay_ = delay; }
@@ -66,9 +63,6 @@ class DelayedOnFilter : public Filter {
 
 class DelayedOffFilter : public Filter {
  public:
-  // User provided, not "= default": `new(p) DelayedOffFilter()` would zero-fill .bss that is already zero.
-  DelayedOffFilter() {}
-
   optional<bool> new_value(bool value) override;
 
   template<typename T> void set_delay(T delay) { this->delay_ = delay; }
@@ -149,8 +143,6 @@ class StatelessLambdaFilter : public Filter {
 
 class SettleFilter : public Filter {
  public:
-  // User provided, not "= default": `new(p) SettleFilter()` would zero-fill .bss that is already zero.
-  SettleFilter() {}
   optional<bool> new_value(bool value) override;
 
   template<typename T> void set_delay(T delay) { this->delay_ = delay; }

esphome/components/bk72xx_ble/__init__.py

@@ -23,7 +23,7 @@ public ble_api.h.
 import logging
 
 import esphome.codegen as cg
-from esphome.components import libretiny, wifi
+from esphome.components import libretiny
 from esphome.components.libretiny.const import (
     FAMILY_BK7231N,
     FAMILY_BK7231Q,
@@ -84,15 +84,6 @@ def _final_validate(config: ConfigType) -> None:
     # which run on a BLE 4.2 board. The hard error is raised at codegen.
     if msg := _unsupported_family_message(libretiny.get_libretiny_family()):
         _LOGGER.warning("%s (this configuration cannot compile)", msg)
-    # Any wifi power_save_mode other than NONE also arms the Beken SDK's MCU
-    # sleep. With the BLE controller running, that sleep never wakes up once the
-    # station is stopped (adapter restart after failed roams, wifi.disable): the
-    # device is dead until a power cycle (esphome#18592). Keep power save off
-    # until LibreTiny ships the SDK-side fix (libretiny-eu/libretiny#414).
-    wifi.force_power_save_off(
-        "with BLE running, the Beken SDK's MCU sleep halts the device once the "
-        "station is stopped (https://github.com/esphome/esphome/issues/18592)"
-    )
 
 
 FINAL_VALIDATE_SCHEMA = _final_validate