Merge branch 'neutral-ble-client' into radon-eye-single-node

2026-08-22 22:26:21 +00:00 · 2026-08-20 00:47:07 -05:00
parent 3ee3d1b353 f17b18d51a
commit ec681bb4fb
274 changed files with 6589 additions and 2242 deletions
@@ -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@c771a70e6277c0a99b617c7a806ffedaca235ff9 # v9.0.0
+      uses: astral-sh/setup-uv@20cfd1bf945f4377ade1205e4dbc17946fc9a30d # v10.0.1
      with:
        enable-cache: true
        # Pull request saves land in per-PR scopes nothing else can
@@ -49,7 +49,7 @@ runs:
        python -m venv venv
        source venv/bin/activate
        python --version
-        uv pip install -r requirements.txt -r requirements_test.txt
+        uv pip install -r requirements.txt -r requirements_dev.txt -r requirements_test.txt
        uv pip install -e .
    - name: Create Python virtual environment
      if: steps.cache-venv.outputs.cache-hit != 'true' && runner.os == 'Windows'
@@ -58,5 +58,5 @@ runs:
        python -m venv venv
        source ./venv/Scripts/activate
        python --version
-        uv pip install -r requirements.txt -r requirements_test.txt
+        uv pip install -r requirements.txt -r requirements_dev.txt -r requirements_test.txt
        uv pip install -e .
@@ -70,6 +70,7 @@ async function isStackedPr(github, context) {
 async function detectMergeBranch(github, context) {
  const labels = new Set();
  const baseRef = context.payload.pull_request.base.ref;
+  const defaultBranch = context.payload.repository.default_branch;

  if (baseRef === 'release') {
    labels.add('merging-to-release');
@@ -78,7 +79,7 @@ async function detectMergeBranch(github, context) {
  } else if (await isStackedPr(github, context)) {
    // GitHub manages the merge order for a stack, so these are not blocked.
    labels.add('stacked-pr');
-  } else if (baseRef !== 'dev') {
+  } else if (baseRef !== defaultBranch) {
    // A chain built by hand: it must not merge until its base branch does.
    labels.add('chained-pr');
  }
@@ -43,14 +43,14 @@ const WITHOUT_SCHEMA = 'CODEOWNERS = ["@esphome/core"]';

 // Builds a fresh context for detectMergeBranch tests instead of mutating the
 // shared CONTEXT fixture above (which other describe blocks rely on).
-function makeMergeContext(baseRef, { stack } = {}) {
+function makeMergeContext(baseRef, { stack, defaultBranch = 'dev' } = {}) {
  const pull_request = { number: 1, base: { ref: baseRef } };
  if (stack !== undefined) {
    pull_request.stack = stack;
  }
  return {
    repo: { owner: 'esphome', repo: 'esphome' },
-    payload: { pull_request }
+    payload: { pull_request, repository: { default_branch: defaultBranch } }
  };
 }

@@ -136,6 +136,21 @@ describe('detectMergeBranch', () => {
    assert.deepEqual(Array.from(labels).sort(), ['chained-pr']);
    assert.equal(state.calls, 1);
  });
+
+  it('base ref matches default branch adds no labels', async () => {
+    const { github } = makeStackGithub({ stack: null });
+    const context = makeMergeContext('other', { defaultBranch: 'other' });
+    const labels = await detectMergeBranch(github, context);
+    assert.deepEqual(Array.from(labels).sort(), []);
+  });
+
+  it('base ref dev when the default branch is main adds chained-pr', async () => {
+    const { github } = makeStackGithub({ stack: null });
+    const context = makeMergeContext('dev', { defaultBranch: 'main' });
+    const labels = await detectMergeBranch(github, context);
+    assert.deepEqual(Array.from(labels).sort(), ['chained-pr']);
+  });
+
 });

 // ---------------------------------------------------------------------------
@@ -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@c771a70e6277c0a99b617c7a806ffedaca235ff9 # v9.0.0
+        uses: astral-sh/setup-uv@20cfd1bf945f4377ade1205e4dbc17946fc9a30d # v10.0.1
        with:
          enable-cache: true
          # Pull-request-only workflow: a save could never be shared and
@@ -41,10 +41,32 @@ jobs:
          version: "0.11.15"

      - name: Install apt dependencies
+        # PR-only workflow, so nothing on dev could seed a shared apt cache
+        # entry; the cached apt action would save one copy per PR. Plain apt
+        # with every call bounded: the apt.conf.d timeouts make a dead
+        # mirror fail over in seconds, and timeout runs under sudo so it can
+        # kill apt-get itself. Install without update first: image lists are
+        # fresh, and the index refresh is what a congested mirror makes slow.
+        timeout-minutes: 15
        run: |
-          sudo apt update
-          sudo apt-cache show protobuf-compiler
-          sudo apt install -y protobuf-compiler
+          sudo tee /etc/apt/apt.conf.d/99ci-acquire-timeouts >/dev/null <<'EOF'
+          Acquire::Retries "1";
+          Acquire::http::Timeout "15";
+          Acquire::https::Timeout "15";
+          EOF
+          # Common path: the image's package lists are fresh enough.
+          if sudo DEBIAN_FRONTEND=noninteractive timeout -k 15 90 \
+              apt-get install -y protobuf-compiler; then
+            protoc --version
+            exit 0
+          fi
+          # Rescue path: refresh the lists once with a generous bound; the
+          # apt config already fails a stalled mirror over quickly.
+          sudo DEBIAN_FRONTEND=noninteractive timeout -k 10 30 \
+            dpkg --configure -a || true
+          sudo timeout -k 15 300 apt-get update
+          sudo DEBIAN_FRONTEND=noninteractive timeout -k 15 300 \
+            apt-get install -y protobuf-compiler
          protoc --version
      - name: Install python dependencies
        run: uv pip install --system aioesphomeapi -c requirements.txt -r requirements_dev.txt
@@ -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@c771a70e6277c0a99b617c7a806ffedaca235ff9 # v9.0.0
+        uses: astral-sh/setup-uv@20cfd1bf945f4377ade1205e4dbc17946fc9a30d # v10.0.1
        with:
          enable-cache: true
          # Pull request saves land in per-PR scopes nothing else can
@@ -68,6 +68,22 @@ jobs:
          uv pip install -r requirements.txt -r requirements_dev.txt -r requirements_test.txt
          uv pip install -e .

+  seed-apt-cache:
+    name: Seed apt package cache
+    runs-on: ubuntu-24.04
+    # PR-branch cache saves are invisible to other PRs, so dev/beta/release
+    # pushes seed the one shared entry PR jobs restore. The key is derived
+    # only from the package list and version; keep both identical in every
+    # step that restores it. In ci-status needs so a broken seed fails dev.
+    if: github.event_name == 'push'
+    timeout-minutes: 10
+    steps:
+      - name: Install apt packages (cached)
+        uses: awalsh128/cache-apt-pkgs-action@553a35bb8ebd9fcabcb1c9451aa4c98e1b4ca8a9 # v1.6.3
+        with:
+          packages: libsdl2-dev ccache
+          version: 1.1
+
  determine-jobs:
    name: Determine which jobs to run
    runs-on: ubuntu-24.04
@@ -179,6 +195,7 @@ jobs:
          . venv/bin/activate
          script/ci-custom.py
          script/build_codeowners.py --check
+          script/build_alias_registry.py --check
          script/build_language_schema.py --check
          script/generate-esp32-boards.py --check
          script/generate-rp2-boards.py --check
@@ -322,7 +339,8 @@ jobs:

  integration-tests:
    name: Run integration tests (${{ matrix.bucket.name }})
-    runs-on: ubuntu-latest
+    # Must match seed-apt-cache's image: the apt cache key has no OS in it.
+    runs-on: ubuntu-24.04
    needs:
      - common
      - determine-jobs
@@ -334,24 +352,16 @@ jobs:
    steps:
      - name: Check out code from GitHub
        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
-      - name: Install ccache
-        # Speeds up the host compiles: tests in a bucket compile overlapping
-        # component sets, so later tests reuse earlier tests' objects.
-        run: |
-          sudo apt-get update -qq
-          sudo apt-get install -y --no-install-recommends ccache
-      - name: Restore ccache (restore-only)
-        # esphome stores the PlatformIO ccache under the machine-global cache
-        # dir (see _ccache_env() in esphome/platformio/toolchain.py). The
-        # bucket-name prefix prefers a same-bucket seed; the bare prefix falls
-        # back to any seed when the bucket layout differs from dev.
-        uses: actions/cache/restore@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
+      - name: Install apt packages (cached)
+        # ccache speeds up the host compiles. A cache hit never touches apt
+        # (mirror outages cannot hang the job); the timeout bounds the cold
+        # path. Packages and version must match seed-apt-cache exactly;
+        # libsdl2-dev is unused here and carried only for cache-key parity.
+        timeout-minutes: 10
+        uses: awalsh128/cache-apt-pkgs-action@553a35bb8ebd9fcabcb1c9451aa4c98e1b4ca8a9 # v1.6.3
        with:
-          path: ~/.cache/esphome/platformio-ccache
-          key: integration-ccache-${{ matrix.bucket.name }}-${{ github.sha }}
-          restore-keys: |
-            integration-ccache-${{ matrix.bucket.name }}-
-            integration-ccache-
+          packages: libsdl2-dev ccache
+          version: 1.1
      - name: Set up Python 3.13
        id: python
        uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
@@ -366,7 +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@c771a70e6277c0a99b617c7a806ffedaca235ff9 # v9.0.0
+        uses: astral-sh/setup-uv@20cfd1bf945f4377ade1205e4dbc17946fc9a30d # v10.0.1
        with:
          enable-cache: true
          # Pull request saves land in per-PR scopes nothing else can
@@ -400,14 +410,6 @@ jobs:
        # esphome stores the PlatformIO ccache under the machine-global cache
        # dir (see _ccache_env() in esphome/platformio/toolchain.py).
        run: CCACHE_DIR="$HOME/.cache/esphome/platformio-ccache" ccache -s
-      - name: Save ccache
-        # Pull request saves land in per-PR scopes nothing else can reuse;
-        # dev pushes seed the shared copy instead.
-        if: github.event_name != 'pull_request'
-        uses: actions/cache/save@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
-        with:
-          path: ~/.cache/esphome/platformio-ccache
-          key: integration-ccache-${{ matrix.bucket.name }}-${{ github.sha }}

  import-time:
    name: Check import esphome.__main__ time
@@ -440,12 +442,17 @@ jobs:
  benchmarks:
    name: Run CodSpeed benchmarks
    runs-on: ubuntu-24.04
+    timeout-minutes: 30
    needs:
      - common
      - determine-jobs
    if: >-
-      (github.event_name == 'push' && github.ref_name == 'dev') ||
-      (github.event_name == 'pull_request' && needs.determine-jobs.outputs.benchmarks == 'true')
+      github.repository == 'esphome/esphome' && (
+        (github.event_name == 'push' && github.ref_name == 'dev') ||
+        (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.
    steps:
      - name: Check out code from GitHub
        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
@@ -459,12 +466,58 @@ jobs:
      - name: Build benchmarks
        id: build
        run: |
+          # pipefail: without it a failed build is masked by the grep/cut
+          # pipeline below, leaving BINARY empty and silently dropping every
+          # C++ benchmark from the run while the job still reports success.
+          set -o pipefail
          . venv/bin/activate
-          export BENCHMARK_LIB_CONFIG=$(python script/setup_codspeed_lib.py)
-          # --build-only prints BUILD_BINARY=<path> to stdout
-          BINARY=$(script/cpp_benchmark.py --all --build-only | grep '^BUILD_BINARY=' | tail -1 | cut -d= -f2-)
+          BENCHMARK_LIB_CONFIG=$(python script/setup_codspeed_lib.py)
+          export BENCHMARK_LIB_CONFIG
+          # --build-only prints BUILD_BINARY=<path> to stdout; the grep is
+          # non-fatal so a missing marker reaches the check below instead of
+          # tripping errexit at this assignment
+          BINARY=$(script/cpp_benchmark.py --all --build-only | { grep '^BUILD_BINARY=' || true; } | tail -1 | cut -d= -f2-)
+          if [ -z "$BINARY" ]; then
+            echo "::error::Benchmark build did not report a binary path"
+            exit 1
+          fi
          echo "binary=$BINARY" >> $GITHUB_OUTPUT

+      - name: Bound apt fetches and pre-install libc6-dbg
+        # The CodSpeed runner installs valgrind + libc6-dbg via its own
+        # unbounded apt-get update; per-invocation apt options cannot reach
+        # it. The apt.conf.d timeouts below bound every later apt call in
+        # this job, the runner's included. Pre-installing libc6-dbg lets the
+        # runner skip apt once its valgrind cache is restored (it checks
+        # ``dpkg -s libc6-dbg``, so the cache action's unregistered restores
+        # would not count). Install without update first: image lists are
+        # fresh, and the index refresh is what a congested mirror makes
+        # slow. Best effort; the job timeout is the last backstop.
+        timeout-minutes: 15
+        continue-on-error: true
+        run: |
+          sudo tee /etc/apt/apt.conf.d/99ci-acquire-timeouts >/dev/null <<'EOF'
+          Acquire::Retries "1";
+          Acquire::http::Timeout "15";
+          Acquire::https::Timeout "15";
+          EOF
+          if dpkg -s libc6-dbg >/dev/null 2>&1; then
+            echo "libc6-dbg already installed"
+            exit 0
+          fi
+          # Common path: the image's package lists are fresh enough.
+          if sudo DEBIAN_FRONTEND=noninteractive timeout -k 15 90 \
+              apt-get install -y libc6-dbg; then
+            exit 0
+          fi
+          # Rescue path: refresh the lists once with a generous bound; the
+          # apt config already fails a stalled mirror over quickly.
+          sudo DEBIAN_FRONTEND=noninteractive timeout -k 10 30 \
+            dpkg --configure -a || true
+          sudo timeout -k 15 300 apt-get update
+          sudo DEBIAN_FRONTEND=noninteractive timeout -k 15 300 \
+            apt-get install -y libc6-dbg
+
      - name: Run CodSpeed benchmarks
        uses: CodSpeedHQ/action@4296e51e7041e24dadb86d1d6e8b9320d223dbe8 # v5.0.3
        with:
@@ -549,24 +602,29 @@ jobs:
          fetch-depth: 2

      - name: Restore Python
+        id: restore-python
        uses: ./.github/actions/restore-python
        with:
          python-version: ${{ env.DEFAULT_PYTHON }}
          cache-key: ${{ needs.common.outputs.cache-key }}

+      # Key on the exact Python version as well: LibreTiny creates a venv under
+      # ~/.platformio/penv whose interpreter is a symlink into the runner's
+      # hosted toolcache, so a cache saved on an older runner image breaks once
+      # a new image ships a newer patch release and drops the old interpreter.
      - name: Cache platformio
        if: github.ref == 'refs/heads/dev' && matrix.pio_cache_key
        uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
        with:
          path: ~/.platformio
-          key: platformio-${{ matrix.pio_cache_key }}-${{ hashFiles('platformio.ini') }}
+          key: platformio-${{ matrix.pio_cache_key }}-${{ steps.restore-python.outputs.python-version }}-${{ hashFiles('platformio.ini') }}

      - name: Cache platformio
        if: github.ref != 'refs/heads/dev' && matrix.pio_cache_key
        uses: actions/cache/restore@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
        with:
          path: ~/.platformio
-          key: platformio-${{ matrix.pio_cache_key }}-${{ hashFiles('platformio.ini') }}
+          key: platformio-${{ matrix.pio_cache_key }}-${{ steps.restore-python.outputs.python-version }}-${{ hashFiles('platformio.ini') }}

      - name: Cache ESP-IDF install
        if: matrix.cache_idf
@@ -883,12 +941,17 @@ jobs:
      - name: List components
        run: echo ${{ matrix.batch.components }}

-      - name: Install apt packages
-        # Not cached: this job is pull-request-only, so a cache save could
-        # never be shared and would only consume quota.
-        run: |
-          sudo apt-get update -qq
-          sudo apt-get install -y --no-install-recommends libsdl2-dev ccache
+      - name: Install apt packages (cached)
+        # A cache hit (seeded on dev by seed-apt-cache) never touches apt,
+        # so mirror outages cannot hang this PR-only job; the timeout bounds
+        # the cold path. Packages and version must match seed-apt-cache
+        # exactly. The action has no --no-install-recommends; same package
+        # set this job used before #17463.
+        timeout-minutes: 10
+        uses: awalsh128/cache-apt-pkgs-action@553a35bb8ebd9fcabcb1c9451aa4c98e1b4ca8a9 # v1.6.3
+        with:
+          packages: libsdl2-dev ccache
+          version: 1.1

      - name: Check out code from GitHub
        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
@@ -1090,7 +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@c771a70e6277c0a99b617c7a806ffedaca235ff9 # v9.0.0
+        uses: astral-sh/setup-uv@20cfd1bf945f4377ade1205e4dbc17946fc9a30d # v10.0.1
        with:
          enable-cache: true
          # Pull request saves land in per-PR scopes nothing else can
@@ -1423,6 +1486,7 @@ jobs:
    # this check.
    needs:
      - common
+      - seed-apt-cache
      - determine-jobs
      - ci-custom
      - pylint
@@ -56,7 +56,7 @@ jobs:

      # Initializes the CodeQL tools for scanning.
      - name: Initialize CodeQL
-        uses: github/codeql-action/init@5595ccaf912efad79be6eef63a5619ff05969be3 # v4.37.6
+        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@5595ccaf912efad79be6eef63a5619ff05969be3 # v4.37.6
+        uses: github/codeql-action/analyze@ff2f1c621b7f889edc0d3c761ac2e6a3f8cdb0dd # v4.37.7
        with:
          category: "/language:${{matrix.language}}"
@@ -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@9f6577fd37b5cf773ab1b9be929714a0dcd15661  # 2026.7.0
+    uses: esphome/workflows/.github/workflows/lock.yml@0fdd5e311b7e744069166696072a1a9cbc5fbeb6  # 2026.8.1
@@ -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@61fd37a044cad4e9aa4303027b2a61b6a34da855  # main
+    uses: esphome/workflows/.github/workflows/stale.yml@a1c1485ab46ef41a84a6a9d8abd7fa4b7628fd70  # main
    secrets:
      ESPHOME_GITHUB_APP_PRIVATE_KEY: ${{ secrets.ESPHOME_GITHUB_APP_PRIVATE_KEY }}
    with:
@@ -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@c771a70e6277c0a99b617c7a806ffedaca235ff9 # v9.0.0
+        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
@@ -11,7 +11,7 @@ ci:
 repos:
  - repo: https://github.com/astral-sh/ruff-pre-commit
    # Ruff version.
-    rev: v0.16.0
+    rev: v0.16.3
    hooks:
      # Run the linter.
      - id: ruff
@@ -763,3 +763,13 @@ The project uses English for non-code content. When drafting documentation, code
 PR descriptions, and similar text, avoid technical jargon. Instead, express concepts in plain English,
 using standard technical terms only when required. Ensure the text is readily comprehensible to a wide
 audience, including non-native English speakers.
+
+## 10. Code Comments
+
+Code comments on individual lines should be used only where necessary to flag issues that may not be obvious
+on a simple reading of the code. Keep them short (e.g. 1 or 2 lines).
+
+Function and method comment blocks may include more detail as required to make
+calling contracts clear and document parameter usage, but should still be kept concise.
+
+Avoid redundancy and repetition; comments should never simply restate what the code already says.
@@ -22,7 +22,7 @@ RUN \
    -r /requirements.txt

 # Install the ESPHome Device Builder dashboard.
-RUN uv pip install --no-cache-dir esphome-device-builder==1.9.5
+RUN uv pip install --no-cache-dir esphome-device-builder==1.12.1

 RUN \
    platformio settings set enable_telemetry No \
@@ -10,7 +10,7 @@ from pathlib import Path
 import re
 import sys
 import time
-from typing import Protocol
+from typing import TYPE_CHECKING, Protocol

 # Note: Do not import modules from esphome.components here, as this would
 # cause them to be loaded before external components are processed, resulting
@@ -71,6 +71,9 @@ from esphome.util import (
    safe_print,
 )

+if TYPE_CHECKING:
+    import threading
+
 # Keep expensive imports (zeroconf, writer, yaml_util, etc.) out of this
 # module's top level. Every `esphome` invocation — including fast paths
 # like `esphome version` — pays the cost of what's imported here before
@@ -567,11 +570,48 @@ def has_name_add_mac_suffix() -> bool:


 def mqtt_get_ip(
-    config: ConfigType, username: str, password: str, client_id: str
+    config: ConfigType,
+    username: str,
+    password: str,
+    client_id: str,
+    stop_event: "threading.Event | None" = None,
 ) -> list[str]:
    from esphome import mqtt

-    return mqtt.get_esphome_device_ip(config, username, password, client_id)
+    return mqtt.get_esphome_device_ip(
+        config, username, password, client_id, stop_event=stop_event
+    )
+
+
+def _add_network_device(device: str, network_devices: list[str]) -> None:
+    """Append a device to the list, expanding it through ``CORE.address_cache``.
+
+    If the hostname is already in the address cache (e.g. populated by mDNS
+    discovery), substitute the cached IPs so aioesphomeapi doesn't open its
+    own Zeroconf to re-resolve it. Duplicates are dropped.
+    """
+    if CORE.address_cache and (cached := CORE.address_cache.get_addresses(device)):
+        network_devices.extend(addr for addr in cached if addr not in network_devices)
+    elif device not in network_devices:
+        network_devices.append(device)
+
+
+def _split_network_devices(devices: list[str]) -> tuple[list[str], bool]:
+    """Split the device list into direct addresses and an MQTT-lookup flag.
+
+    Direct addresses are expanded through ``CORE.address_cache`` and deduped
+    the same way ``_resolve_network_devices`` does; MQTT/MQTTIP magic strings
+    are not resolved, only reported via the returned bool so the caller can
+    defer the broker lookup.
+    """
+    network_devices: list[str] = []
+    has_mqtt_lookup = False
+    for device in devices:
+        if get_port_type(device) in _MQTT_PORT_TYPES:
+            has_mqtt_lookup = True
+        else:
+            _add_network_device(device, network_devices)
+    return network_devices, has_mqtt_lookup


 def _resolve_network_devices(
@@ -604,40 +644,44 @@ def _resolve_network_devices(
        if port_type in _MQTT_PORT_TYPES:
            # Only resolve MQTT once, even if multiple MQTT entries
            if not mqtt_resolved:
-                try:
-                    mqtt_ips = mqtt_get_ip(
-                        config, args.username, args.password, args.client_id
-                    )
-                    # pylint can't infer mqtt_get_ip's return through its
-                    # lazy ``from esphome import mqtt`` import, so it flags
-                    # the genexpr below.
-                    network_devices.extend(
-                        addr
-                        for addr in mqtt_ips  # pylint: disable=not-an-iterable
-                        if addr not in network_devices
-                    )
-                except EsphomeError as err:
-                    _LOGGER.warning(
-                        "MQTT IP discovery failed (%s), will try other devices if available",
-                        err,
-                    )
+                mqtt_ips = _mqtt_get_ip_or_warn(
+                    config, args.username, args.password, args.client_id
+                )
+                network_devices.extend(
+                    addr for addr in mqtt_ips if addr not in network_devices
+                )
                mqtt_resolved = True
            continue

-        # If the hostname is already in the address cache (e.g. populated by
-        # mDNS discovery), substitute the cached IPs so aioesphomeapi doesn't
-        # open its own Zeroconf to re-resolve it.
-        if CORE.address_cache and (cached := CORE.address_cache.get_addresses(device)):
-            network_devices.extend(
-                addr for addr in cached if addr not in network_devices
-            )
-        elif device not in network_devices:
-            # Regular network address or IP - add if not already present
-            network_devices.append(device)
+        _add_network_device(device, network_devices)

    return network_devices


+def _mqtt_get_ip_or_warn(
+    config: ConfigType,
+    username: str,
+    password: str,
+    client_id: str,
+    stop_event: "threading.Event | None" = None,
+) -> list[str]:
+    """Look up the device IP via MQTT, returning [] with a warning on failure.
+
+    This owns the failure policy for MQTT IP discovery on paths that have
+    other addresses to fall back on: a broker problem must not abort the
+    operation. Also used as the deferred resolver handed to ``run_logs``,
+    where it runs in a worker thread.
+    """
+    try:
+        return mqtt_get_ip(config, username, password, client_id, stop_event=stop_event)
+    except EsphomeError as err:
+        _LOGGER.warning(
+            "MQTT IP discovery failed (%s), will try other devices if available",
+            err,
+        )
+        return []
+
+
 def run_miniterm(config: ConfigType, port: str, args) -> int:
    from datetime import datetime

@@ -1438,17 +1482,37 @@ def show_logs(config: ConfigType, args: ArgsProtocol, devices: list[str]) -> int
        return run_miniterm(config, port, args)

    # Check if we should use API for logging
-    # Resolve MQTT magic strings to actual IP addresses
-    if has_api() and (
-        network_devices := _resolve_network_devices(devices, config, args)
-    ):
-        from esphome.api_client import run_logs
+    if has_api():
+        network_devices, has_mqtt_lookup = _split_network_devices(devices)
+        mqtt_resolver = None
+        if has_mqtt_lookup:
+            if network_devices:
+                # Addresses are already known, so don't block startup on the
+                # MQTT broker lookup; hand it to run_logs as a deferred
+                # resolver that runs in the background and feeds discovered
+                # addresses into the running log client, keeping MQTT as a
+                # fallback for when the known addresses are stale (e.g. DHCP
+                # reassigned the IP).
+                mqtt_resolver = functools.partial(
+                    _mqtt_get_ip_or_warn,
+                    config,
+                    args.username,
+                    args.password,
+                    args.client_id,
+                )
+            else:
+                # The MQTT lookup is the only way to find the device; resolve
+                # it up front since the client needs an address to start with.
+                network_devices = _resolve_network_devices(devices, config, args)
+        if network_devices:
+            from esphome.api_client import run_logs

-        return run_logs(
-            config,
-            network_devices,
-            subscribe_states=_should_subscribe_states(args),
-        )
+            return run_logs(
+                config,
+                network_devices,
+                subscribe_states=_should_subscribe_states(args),
+                mqtt_resolver=mqtt_resolver,
+            )

    if port_type in (PortType.NETWORK, PortType.MQTT) and has_mqtt_logging():
        from esphome import mqtt
@@ -2668,7 +2732,8 @@ def run_esphome(argv):
                conf_path.name,
            )

-    if config is None:
+    cache_missed = config is None
+    if cache_missed:
        from esphome.config import read_config

        config = read_config(
@@ -2677,26 +2742,25 @@ def run_esphome(argv):
            # Snapshot only needed by `esphome config --no-defaults`.
            snapshot_user_config=getattr(args, "no_defaults", False),
        )
-        # Refresh the cache so the next upload/logs hits the fast path
-        # instead of re-running read_config. Skip when the storage
-        # sidecar is absent (no compile has run): the cache would
-        # never be loaded back, so writing secrets to disk is wasted.
-        if cache_eligible and config is not None:
-            from esphome.compiled_config import save_compiled_config
-            from esphome.storage_json import ext_storage_path
-
-            if ext_storage_path(conf_path.name).exists():
-                save_compiled_config(config)
-    if config is None:
-        return 2
+        if config is None:
+            return 2
    CORE.config = config

    # 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.
+    # 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_eligible and cache_missed:
+        from esphome.compiled_config import save_compiled_config_and_sidecar
+
+        save_compiled_config_and_sidecar(config)
+
    if args.command not in POST_CONFIG_ACTIONS:
        safe_print(f"Unknown command {args.command}")
        return 1
@@ -3,6 +3,7 @@ from __future__ import annotations
 import asyncio
 from contextlib import suppress
 import logging
+import threading
 from typing import TYPE_CHECKING, Any
 import warnings

@@ -20,6 +21,8 @@ from esphome.stacktrace import LogLineProcessor
 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
    )
@@ -32,8 +35,18 @@ async def async_run_logs(
    config: dict[str, Any],
    addresses: list[str],
    subscribe_states: bool = True,
+    mqtt_resolver: Callable[[threading.Event], list[str]] | None = None,
 ) -> None:
-    """Run the logs command in the event loop."""
+    """Run the logs command in the event loop.
+
+    If ``mqtt_resolver`` is given, it is called in a worker thread (paho-mqtt
+    has no asyncio support on Windows) concurrently with the connection
+    attempts to ``addresses``, and any addresses it discovers are fed into
+    the running client. It owns its own failure handling (returning [] when
+    discovery fails) and must honor the ``threading.Event`` it is passed so
+    teardown is not delayed by the lookup's wait window; the initial broker
+    connect itself is only bounded by the socket timeout.
+    """
    from datetime import datetime

    conf = config["api"]
@@ -60,6 +73,41 @@ async def async_run_logs(
    # Decoder resolution policy lives in LogLineProcessor.
    processor = LogLineProcessor(config, CORE.target_platform)

+    mqtt_task: asyncio.Task[None] | None = None
+    mqtt_stop_event = threading.Event()
+
+    def _cancel_mqtt_discovery() -> None:
+        """Stop the broker lookup once a connection has been established.
+
+        Its answer is only useful while still disconnected: after that it
+        either duplicates the connected address or arrives too late to
+        matter, so don't keep an idle broker session open for it.
+        """
+        mqtt_stop_event.set()
+        if mqtt_task is not None and not mqtt_task.done():
+            mqtt_task.cancel()
+
+    async def _resolve_mqtt_addresses() -> None:
+        """Discover the device address via the MQTT broker in the background."""
+        try:
+            mqtt_ips = await asyncio.to_thread(mqtt_resolver, mqtt_stop_event)
+            if not mqtt_ips:
+                _LOGGER.debug(
+                    "MQTT discovery %s",
+                    "aborted" if mqtt_stop_event.is_set() else "found no addresses",
+                )
+                return
+            if cli.add_addresses(mqtt_ips):
+                _LOGGER.info("Discovered address(es) via MQTT: %s", ", ".join(mqtt_ips))
+            else:
+                _LOGGER.debug(
+                    "MQTT-discovered address(es) already known: %s", ", ".join(mqtt_ips)
+                )
+        except Exception:  # pylint: disable=broad-except
+            # A background task failure would otherwise stay invisible for
+            # the whole session and only re-raise at teardown
+            _LOGGER.exception("MQTT address discovery failed")
+
    def on_log(msg: SubscribeLogsResponse) -> None:
        """Handle a new log message."""
        time_ = datetime.now().astimezone()
@@ -98,20 +146,53 @@ async def async_run_logs(
        # A top-level ``deep_sleep:`` block means the device is only awake
        # briefly; cap the reconnect backoff so a wake window is not missed.
        deep_sleep="deep_sleep" in config,
+        on_connect=_cancel_mqtt_discovery if mqtt_resolver is not None else None,
    )
    try:
+        # Don't start (or keep) the broker lookup if a connection already
+        # succeeded; the stop event doubles as the not-needed-anymore latch
+        # and get_esphome_device_ip returns immediately when it is set.
+        if mqtt_resolver is not None and not mqtt_stop_event.is_set():
+            mqtt_task = asyncio.create_task(_resolve_mqtt_addresses())
        await asyncio.Event().wait()
    finally:
-        await stop()
+        try:
+            if mqtt_task is not None:
+                # Unblock the worker thread first so it can't hold up
+                # loop.shutdown_default_executor() for the full lookup timeout.
+                mqtt_stop_event.set()
+                # Give the worker a moment to exit through its own error
+                # handling; cancelling first would race out a late failure.
+                done, _ = await asyncio.wait([mqtt_task], timeout=1.0)
+                if not done:
+                    mqtt_task.cancel()
+                # return_exceptions keeps a CancelledError from the cancel()
+                # above from re-raising here and jumping over the stop() below.
+                # The task handles Exception itself, so only a BaseException
+                # escape (e.g. SystemExit from the worker) can land here.
+                (result,) = await asyncio.gather(mqtt_task, return_exceptions=True)
+                if isinstance(result, BaseException) and not isinstance(
+                    result, asyncio.CancelledError
+                ):
+                    _LOGGER.error("MQTT address discovery failed", exc_info=result)
+        finally:
+            # Must run even if a second cancellation lands mid-cleanup above
+            await stop()


 def run_logs(
    config: dict[str, Any],
    addresses: list[str],
    subscribe_states: bool = True,
+    mqtt_resolver: Callable[[threading.Event], list[str]] | None = None,
 ) -> None:
    """Run the logs command."""
    with suppress(KeyboardInterrupt):
        asyncio.run(
-            async_run_logs(config, addresses, subscribe_states=subscribe_states)
+            async_run_logs(
+                config,
+                addresses,
+                subscribe_states=subscribe_states,
+                mqtt_resolver=mqtt_resolver,
+            )
        )
@@ -18,9 +18,9 @@ from pathlib import Path
 from typing import Any

 from esphome.const import __version__ as ESPHOME_VERSION
-from esphome.core import CORE, Lambda
+from esphome.core import CORE, EsphomeError, Lambda
 from esphome.helpers import write_file
-from esphome.storage_json import StorageJSON, ext_storage_path
+from esphome.storage_json import StorageJSON, ext_storage_path, storage_path
 from esphome.types import ConfigType

 _LOGGER = logging.getLogger(__name__)
@@ -65,7 +65,71 @@ def save_compiled_config(config: ConfigType) -> None:
        # non-basic dict key), so every upload/logs pays the slow path.
        _LOGGER.warning("Cannot cache the validated config: %s", err)
    except Exception as err:  # noqa: BLE001  # pylint: disable=broad-except
-        _LOGGER.debug("Skipping compiled config cache write: %s", err)
+        # Likely persistent (permissions, full disk): every upload/logs
+        # pays the slow path until it clears, so surface it.
+        _LOGGER.warning("Skipping compiled config cache write: %s", err)
+
+
+def save_compiled_config_and_sidecar(config: ConfigType) -> None:
+    """Refresh the cache from the upload/logs fallback (CORE.config must be set).
+
+    The cache is only written when a complete sidecar is on disk:
+    load_compiled_config can't use it otherwise, and it holds resolved
+    secrets.
+    """
+    if _refresh_sidecar():
+        save_compiled_config(config)
+
+
+def _refresh_sidecar() -> bool:
+    """Ensure a complete sidecar is on disk; True when one is.
+
+    Writes one (without claiming a build) when missing or wizard-only.
+    Failures are non-fatal; the next upload/logs pays the slow path again.
+    """
+    try:
+        path = storage_path()
+        try:
+            old = StorageJSON.load_strict(path)
+        except Exception as err:  # noqa: BLE001  # pylint: disable=broad-except
+            # Present but unreadable: it may hold a real build's metadata,
+            # and a fresh rewrite would also stop the next compile from
+            # cleaning a possibly incoherent build tree.
+            _LOGGER.warning(
+                "Not caching: storage sidecar %s is unreadable (%s)", path, err
+            )
+            return False
+        if old is not None and old.can_apply_to_core():
+            # Compile-written; nothing to refresh.
+            return True
+        if CORE.build_path is not None and CORE.build_path.exists():
+            # An unvalidated build tree: its absent or mismatched sidecar
+            # is what makes the next compile wipe it, so don't vouch for
+            # a build this run never saw.
+            _LOGGER.warning(
+                "Not caching: build tree %s has no matching sidecar; "
+                "'esphome compile' will settle it",
+                CORE.build_path,
+            )
+            return False
+        new = StorageJSON.from_esphome_core(CORE, old, claim_build=False)
+        if not new.can_apply_to_core():
+            _LOGGER.warning("Not caching: rebuilt storage sidecar is still incomplete")
+            return False
+        new.save(path)
+        return True
+    except (OSError, EsphomeError) as err:
+        # write_file wraps OSError into EsphomeError. Persistent
+        # (unwritable storage dir), so surface that every upload/logs
+        # pays the slow path.
+        _LOGGER.warning("Could not refresh the storage sidecar: %s", err)
+    except Exception:  # noqa: BLE001  # pylint: disable=broad-except
+        # A structural bug; keep the traceback so it isn't mistaken
+        # for the I/O failure above.
+        _LOGGER.warning(
+            "Unexpected error refreshing the storage sidecar", exc_info=True
+        )
+    return False


 def load_compiled_config(conf_path: Path) -> ConfigType | None:
@@ -98,11 +162,8 @@ def load_compiled_config(conf_path: Path) -> ConfigType | None:
        return None

    storage = StorageJSON.load(ext_storage_path(conf_path.name))
-    if storage is None:
-        return None
-    # apply_to_core assumes a real compile wrote the sidecar; wizard-only
-    # sidecars leave both of these unset and can't drive upload/logs.
-    if not storage.core_platform and not storage.target_platform:
+    if storage is None or not storage.can_apply_to_core():
+        _LOGGER.debug("Ignoring compiled config cache: sidecar missing or incomplete")
        return None
    storage.apply_to_core()
    return config
@@ -0,0 +1,10 @@
+"""Component alias registry.
+
+Generated by script/build_alias_registry.py - do not edit manually.
+See the component-alias section of esphome/loader.py.
+"""
+
+# alias -> (canonical component, removal version or None)
+COMPONENT_ALIASES: dict[str, tuple[str, str | None]] = {
+    "rp2040": ("rp2", "2027.7.0"),
+}
@@ -3,7 +3,7 @@

 namespace esphome::adc {

-static const char *const TAG = "adc.common";
+static const char *const TAG = "adc";

 const LogString *sampling_mode_to_str(SamplingMode mode) {
  switch (mode) {
@@ -6,7 +6,7 @@

 namespace esphome::adc {

-static const char *const TAG = "adc.esp32";
+static const char *const TAG = "adc";

 adc_oneshot_unit_handle_t ADCSensor::shared_adc_handles[2] = {nullptr, nullptr};

@@ -13,7 +13,7 @@ ADC_MODE(ADC_VCC)

 namespace esphome::adc {

-static const char *const TAG = "adc.esp8266";
+static const char *const TAG = "adc";

 void ADCSensor::setup() {
 #ifndef USE_ADC_SENSOR_VCC
@@ -5,7 +5,7 @@

 namespace esphome::adc {

-static const char *const TAG = "adc.libretiny";
+static const char *const TAG = "adc";

 void ADCSensor::setup() {
 #ifndef USE_ADC_SENSOR_VCC
@@ -17,7 +17,7 @@

 namespace esphome::adc {

-static const char *const TAG = "adc.rp2";
+static const char *const TAG = "adc";

 // The on-die temperature sensor sits on the last ADC channel: input 4 on RP2040
 // and RP2350A, but input 8 on RP2350B, which has eight external channels rather
@@ -7,7 +7,7 @@

 namespace esphome::adc {

-static const char *const TAG = "adc.zephyr";
+static const char *const TAG = "adc";

 void ADCSensor::setup() {
  if (!adc_is_ready_dt(this->channel_)) {
@@ -497,7 +497,7 @@ async def to_code(config: ConfigType) -> None:
            # and plaintext disabled. Only a factory reset can remove it.
            cg.add_define("USE_API_PLAINTEXT")
        cg.add_define("USE_API_NOISE")
-        cg.add_library("esphome/noise-c", "0.1.11")
+        cg.add_library("esphome/noise-c", "0.1.21")
        # Enable optimized memzero/memcmp in libsodium instead of volatile byte loops
        cg.add_build_flag("-DHAVE_WEAK_SYMBOLS=1")
        cg.add_build_flag("-DHAVE_INLINE_ASM=1")
@@ -160,11 +160,6 @@ APIConnection::APIConnection(std::unique_ptr<socket::Socket> sock, APIServer *pa
 #else
 #error "No frame helper defined"
 #endif
-#ifdef USE_CAMERA
-  if (camera::Camera::instance() != nullptr) {
-    this->image_reader_ = std::unique_ptr<camera::CameraImageReader>{camera::Camera::instance()->create_image_reader()};
-  }
-#endif
 }

 void APIConnection::start() {
@@ -448,7 +443,7 @@ void APIConnection::on_disconnect_response() {
 uint16_t APIConnection::fill_and_encode_entity_state(EntityBase *entity, StateResponseProtoMessage &msg,
                                                     CalculateSizeFn size_fn, MessageEncodeFn encode_fn,
                                                     APIConnection *conn, uint32_t remaining_size) {
-  msg.key = entity->get_entity_key();
+  msg.key = entity->get_object_id_hash();
 #ifdef USE_DEVICES
  msg.device_id = entity->get_device_id();
 #endif
@@ -459,7 +454,7 @@ uint16_t APIConnection::fill_and_encode_entity_info(EntityBase *entity, InfoResp
                                                    CalculateSizeFn size_fn, MessageEncodeFn encode_fn,
                                                    APIConnection *conn, uint32_t remaining_size) {
  // Set common fields that are shared by all entity types
-  msg.key = entity->get_entity_key();
+  msg.key = entity->get_object_id_hash();

  if (entity->has_own_name()) {
    msg.name = entity->get_name();
@@ -1140,6 +1135,7 @@ void APIConnection::try_send_camera_image_() {
  if (!this->image_reader_)
    return;

+  const auto *cam = camera::Camera::instance();
  // Send as many chunks as possible without blocking
  while (this->image_reader_->available()) {
    if (!this->helper_->can_write_without_blocking())
@@ -1149,11 +1145,11 @@ void APIConnection::try_send_camera_image_() {
    bool done = this->image_reader_->available() == to_send;

    CameraImageResponse msg;
-    msg.key = camera::Camera::instance()->get_entity_key();
+    msg.key = cam->get_object_id_hash();
    msg.set_data(this->image_reader_->peek_data_buffer(), to_send);
    msg.done = done;
 #ifdef USE_DEVICES
-    msg.device_id = camera::Camera::instance()->get_device_id();
+    msg.device_id = cam->get_device_id();
 #endif

    if (!this->send_message(msg)) {
@@ -1169,15 +1165,19 @@ void APIConnection::try_send_camera_image_() {
 void APIConnection::set_camera_state(std::shared_ptr<camera::CameraImage> image) {
  if (!this->flags_.state_subscription)
    return;
-  if (!this->image_reader_)
+  if (this->image_reader_ && this->image_reader_->available())
    return;
-  if (this->image_reader_->available())
+  if (!image->was_requested_by(esphome::camera::API_REQUESTER) && !image->was_requested_by(esphome::camera::IDLE))
    return;
-  if (image->was_requested_by(esphome::camera::API_REQUESTER) || image->was_requested_by(esphome::camera::IDLE)) {
-    this->image_reader_->set_image(std::move(image));
-    // Try to send immediately to reduce latency
-    this->try_send_camera_image_();
+  if (!this->image_reader_) {
+    // Created on the first image this connection will send, so connections
+    // that never receive one never pay for a reader. Only a registered
+    // camera's listener can reach this, so instance() is non-null here.
+    this->image_reader_ = std::unique_ptr<camera::CameraImageReader>{camera::Camera::instance()->create_image_reader()};
  }
+  this->image_reader_->set_image(std::move(image));
+  // Try to send immediately to reduce latency
+  this->try_send_camera_image_();
 }
 uint16_t APIConnection::try_send_camera_info(EntityBase *entity, APIConnection *conn, uint32_t remaining_size) {
  auto *camera = static_cast<camera::Camera *>(entity);
@@ -591,18 +591,21 @@ APIError APINoiseFrameHelper::write_frame_(const uint8_t *data, uint16_t len) {
 */
 APIError APINoiseFrameHelper::init_handshake_() {
  int err;
-  memset(&nid_, 0, sizeof(nid_));
-  // const char *proto = "Noise_NNpsk0_25519_ChaChaPoly_SHA256";
-  // err = noise_protocol_name_to_id(&nid_, proto, strlen(proto));
-  nid_.pattern_id = NOISE_PATTERN_NN;
-  nid_.cipher_id = NOISE_CIPHER_CHACHAPOLY;
-  nid_.dh_id = NOISE_DH_CURVE25519;
-  nid_.prefix_id = NOISE_PREFIX_STANDARD;
-  nid_.hybrid_id = NOISE_DH_NONE;
-  nid_.hash_id = NOISE_HASH_SHA256;
-  nid_.modifier_ids[0] = NOISE_MODIFIER_PSK0;
+  // Noise_NNpsk0_25519_ChaChaPoly_SHA256, built on the stack:
+  // noise_handshakestate_new_by_id copies it, so a member would waste
+  // 104 bytes per connection, and a static const would sit in RAM on
+  // ESP8266 (.rodata is DRAM there).
+  const NoiseProtocolId nid = {
+      .prefix_id = NOISE_PREFIX_STANDARD,
+      .pattern_id = NOISE_PATTERN_NN,
+      .modifier_ids = {NOISE_MODIFIER_PSK0},
+      .dh_id = NOISE_DH_CURVE25519,
+      .cipher_id = NOISE_CIPHER_CHACHAPOLY,
+      .hash_id = NOISE_HASH_SHA256,
+      .hybrid_id = NOISE_DH_NONE,
+  };

-  err = noise_handshakestate_new_by_id(&handshake_, &nid_, NOISE_ROLE_RESPONDER);
+  err = noise_handshakestate_new_by_id(&handshake_, &nid, NOISE_ROLE_RESPONDER);
  APIError aerr =
      handle_noise_error_(err, LOG_STR("noise_handshakestate_new_by_id"), APIError::HANDSHAKESTATE_SETUP_FAILED);
  if (aerr != APIError::OK)
@@ -63,9 +63,6 @@ class APINoiseFrameHelper final : public APIFrameHelper {
  // Buffer for noise handshake prologue (released after handshake)
  APIBuffer prologue_;

-  // NoiseProtocolId (size depends on implementation)
-  NoiseProtocolId nid_;
-
  // Group small types together
  // Fixed-size header buffer for noise protocol:
  // 1 byte for indicator + 2 bytes for message size (16-bit value, not varint)
@@ -300,46 +300,12 @@ void BekenSPILEDStripLightOutput::write_state(light::LightState *state) {
 }

 light::ESPColorView BekenSPILEDStripLightOutput::get_view_internal(int32_t index) const {
-  int32_t r = 0, g = 0, b = 0;
-  switch (this->rgb_order_) {
-    case ORDER_RGB:
-      r = 0;
-      g = 1;
-      b = 2;
-      break;
-    case ORDER_RBG:
-      r = 0;
-      g = 2;
-      b = 1;
-      break;
-    case ORDER_GRB:
-      r = 1;
-      g = 0;
-      b = 2;
-      break;
-    case ORDER_GBR:
-      r = 2;
-      g = 0;
-      b = 1;
-      break;
-    case ORDER_BGR:
-      r = 2;
-      g = 1;
-      b = 0;
-      break;
-    case ORDER_BRG:
-      r = 1;
-      g = 2;
-      b = 0;
-      break;
-  }
-  uint8_t multiplier = this->is_rgbw_ || this->is_wrgb_ ? 4 : 3;
-  uint8_t white = this->is_wrgb_ ? 0 : 3;
-
-  return {this->buf_ + (index * multiplier) + r + this->is_wrgb_,
-          this->buf_ + (index * multiplier) + g + this->is_wrgb_,
-          this->buf_ + (index * multiplier) + b + this->is_wrgb_,
-          this->is_rgbw_ || this->is_wrgb_ ? this->buf_ + (index * multiplier) + white : nullptr,
+  const light::ChannelColors &colors = this->channel_colors_;
+  uint8_t *led = this->buf_ + (index * colors.bytes_per_led());
+  return {led + colors.r,
+          led + colors.g,
+          led + colors.b,
+          colors.has_white() ? led + colors.w : nullptr,
          &this->effect_data_[index],
          &this->correction_};
 }
@@ -349,35 +315,12 @@ void BekenSPILEDStripLightOutput::dump_config() {
                "Beken SPI LED Strip:\n"
                "  Pin: %u",
                this->pin_);
-  const char *rgb_order;
-  switch (this->rgb_order_) {
-    case ORDER_RGB:
-      rgb_order = "RGB";
-      break;
-    case ORDER_RBG:
-      rgb_order = "RBG";
-      break;
-    case ORDER_GRB:
-      rgb_order = "GRB";
-      break;
-    case ORDER_GBR:
-      rgb_order = "GBR";
-      break;
-    case ORDER_BGR:
-      rgb_order = "BGR";
-      break;
-    case ORDER_BRG:
-      rgb_order = "BRG";
-      break;
-    default:
-      rgb_order = "UNKNOWN";
-      break;
-  }
+  char channel_colors[5];
  ESP_LOGCONFIG(TAG,
-                "  RGB Order: %s\n"
+                "  Channel colors: %s\n"
                "  Max refresh rate: %" PRIu32 "\n"
                "  Number of LEDs: %u",
-                rgb_order, this->max_refresh_rate_.value_or(0), this->num_leds_);
+                this->channel_colors_.to_string(channel_colors), this->max_refresh_rate_.value_or(0), this->num_leds_);
 }

 float BekenSPILEDStripLightOutput::get_setup_priority() const { return setup_priority::HARDWARE; }
@@ -3,6 +3,7 @@
 #ifdef USE_BK72XX

 #include "esphome/components/light/addressable_light.h"
+#include "esphome/components/light/channel_colors.h"
 #include "esphome/components/light/light_output.h"
 #include "esphome/core/color.h"
 #include "esphome/core/component.h"
@@ -10,15 +11,6 @@

 namespace esphome::beken_spi_led_strip {

-enum RGBOrder : uint8_t {
-  ORDER_RGB,
-  ORDER_RBG,
-  ORDER_GRB,
-  ORDER_GBR,
-  ORDER_BGR,
-  ORDER_BRG,
-};
-
 class BekenSPILEDStripLightOutput final : public light::AddressableLight {
 public:
  void setup() override;
@@ -28,7 +20,7 @@ class BekenSPILEDStripLightOutput final : public light::AddressableLight {
  int32_t size() const override { return this->num_leds_; }
  light::LightTraits get_traits() override {
    auto traits = light::LightTraits();
-    if (this->is_rgbw_ || this->is_wrgb_) {
+    if (this->channel_colors_.has_white()) {
      traits.set_supported_color_modes({light::ColorMode::RGB_WHITE, light::ColorMode::WHITE});
    } else {
      traits.set_supported_color_modes({light::ColorMode::RGB});
@@ -38,16 +30,13 @@ class BekenSPILEDStripLightOutput final : public light::AddressableLight {

  void set_pin(uint8_t pin) { this->pin_ = pin; }
  void set_num_leds(uint16_t num_leds) { this->num_leds_ = num_leds; }
-  void set_is_rgbw(bool is_rgbw) { this->is_rgbw_ = is_rgbw; }
-  void set_is_wrgb(bool is_wrgb) { this->is_wrgb_ = is_wrgb; }
+  void set_channel_colors(light::ChannelColors channel_colors) { this->channel_colors_ = channel_colors; }

  /// Set a maximum refresh rate in µs as some lights do not like being updated too often.
  void set_max_refresh_rate(uint32_t interval_us) { this->max_refresh_rate_ = interval_us; }

  void set_led_params(uint8_t bit0, uint8_t bit1, uint32_t spi_frequency);

-  void set_rgb_order(RGBOrder rgb_order) { this->rgb_order_ = rgb_order; }
-
  void clear_effect_data() override {
    for (int i = 0; i < this->size(); i++)
      this->effect_data_[i] = 0;
@@ -58,7 +47,7 @@ class BekenSPILEDStripLightOutput final : public light::AddressableLight {
 protected:
  light::ESPColorView get_view_internal(int32_t index) const override;

-  size_t get_buffer_size_() const { return this->num_leds_ * (this->is_rgbw_ || this->is_wrgb_ ? 4 : 3); }
+  size_t get_buffer_size_() const { return this->num_leds_ * this->channel_colors_.bytes_per_led(); }

  uint8_t *buf_{nullptr};
  uint8_t *effect_data_{nullptr};
@@ -66,13 +55,11 @@ class BekenSPILEDStripLightOutput final : public light::AddressableLight {

  uint8_t pin_;
  uint16_t num_leds_;
-  bool is_rgbw_;
-  bool is_wrgb_;

  uint32_t spi_frequency_{6666666};
  uint8_t bit0_{0xE0};
  uint8_t bit1_{0xFC};
-  RGBOrder rgb_order_;
+  light::ChannelColors channel_colors_{0, 1, 2, light::ChannelColors::NO_WHITE};

  uint32_t last_refresh_{0};
  optional<uint32_t> max_refresh_rate_{};
@@ -3,6 +3,7 @@ from dataclasses import dataclass
 from esphome import pins
 import esphome.codegen as cg
 from esphome.components import libretiny, light
+from esphome.components.const import CONF_CHANNEL_COLORS, CONF_IS_WRGB
 import esphome.config_validation as cv
 from esphome.const import (
    CONF_CHIPSET,
@@ -13,6 +14,7 @@ from esphome.const import (
    CONF_PIN,
    CONF_RGB_ORDER,
 )
+from esphome.types import ConfigType

 CODEOWNERS = ["@Mat931"]
 DEPENDENCIES = ["libretiny"]
@@ -22,17 +24,6 @@ BekenSPILEDStripLightOutput = beken_spi_led_strip_ns.class_(
    "BekenSPILEDStripLightOutput", light.AddressableLight
 )

-RGBOrder = beken_spi_led_strip_ns.enum("RGBOrder")
-
-RGB_ORDERS = {
-    "RGB": RGBOrder.ORDER_RGB,
-    "RBG": RGBOrder.ORDER_RBG,
-    "GRB": RGBOrder.ORDER_GRB,
-    "GBR": RGBOrder.ORDER_GBR,
-    "BGR": RGBOrder.ORDER_BGR,
-    "BRG": RGBOrder.ORDER_BRG,
-}
-

@dataclass
 class LEDStripTimings:
@@ -57,8 +48,6 @@ CHIPSETS = {
 }


-CONF_IS_WRGB = "is_wrgb"
-
 SUPPORTED_PINS = {
    libretiny.const.FAMILY_BK7231N: [16],
    libretiny.const.FAMILY_BK7231T: [16],
@@ -79,10 +68,9 @@ def _validate_pin(value):
    return value


-def _validate_num_leds(value):
-    max_num_leds = 165  # 170
-    if value[CONF_IS_RGBW] or value[CONF_IS_WRGB]:
-        max_num_leds = 123  # 127
+def _validate_num_leds(value: ConfigType) -> ConfigType:
+    # A white channel makes each LED one byte wider, so fewer of them fit in the DMA buffer.
+    max_num_leds = 123 if "W" in value[CONF_CHANNEL_COLORS] else 165  # 127 / 170
    if value[CONF_NUM_LEDS] > max_num_leds:
        raise cv.Invalid(
            f"The maximum number of LEDs for this configuration is {max_num_leds}.",
@@ -99,18 +87,23 @@ CONFIG_SCHEMA = cv.All(
                pins.internal_gpio_output_pin_number, _validate_pin
            ),
            cv.Required(CONF_NUM_LEDS): cv.positive_not_null_int,
-            cv.Required(CONF_RGB_ORDER): cv.enum(RGB_ORDERS, upper=True),
+            cv.Optional(CONF_CHANNEL_COLORS): light.validate_channel_colors,
+            # Deprecated in favour of CONF_CHANNEL_COLORS, remove in 2027.3.0
+            cv.Optional(CONF_RGB_ORDER): cv.one_of(*light.RGB_ORDERS, upper=True),
+            cv.Optional(CONF_IS_RGBW): cv.boolean,
+            cv.Optional(CONF_IS_WRGB): cv.boolean,
            cv.Optional(CONF_MAX_REFRESH_RATE): cv.positive_time_period_microseconds,
            cv.Required(CONF_CHIPSET): cv.one_of(*CHIPSETS, upper=True),
-            cv.Optional(CONF_IS_RGBW, default=False): cv.boolean,
-            cv.Optional(CONF_IS_WRGB, default=False): cv.boolean,
        }
    ),
+    light.migrate_channel_colors(
+        removed_in="2027.3.0", component="beken_spi_led_strip"
+    ),
    _validate_num_leds,
 )


-async def to_code(config):
+async def to_code(config: ConfigType) -> None:
    var = cg.new_Pvariable(config[CONF_OUTPUT_ID])
    await light.register_light(var, config)
    await cg.register_component(var, config)
@@ -130,6 +123,6 @@ async def to_code(config):
        )
    )

-    cg.add(var.set_rgb_order(config[CONF_RGB_ORDER]))
-    cg.add(var.set_is_rgbw(config[CONF_IS_RGBW]))
-    cg.add(var.set_is_wrgb(config[CONF_IS_WRGB]))
+    cg.add(
+        var.set_channel_colors(light.channel_colors_struct(config[CONF_CHANNEL_COLORS]))
+    )
@@ -5,11 +5,11 @@ bring-up and the controller BLE address. Consumers (bk72xx_ble_tracker) build
 on this component and contain no SDK calls of their own.

 Supported SoCs (BLE 5.x): BK7231N/BK7236 (BLE 5.1), BK7238/BK7252N/BK7253
-(BLE 5.2), and any future BLE-5.x SoC. Capability is detected at compile time,
-not by a chip list: the C++ guards on `__has_include("ble_api.h")` — the Beken
-BLE 5.x public API header, which the LibreTiny beken-72xx builder ships only
-for BLE-5.x SoCs. BK7231T/BK7251/BK7271 (BLE 4.2) and BK7231Q (no BLE) fail
-with a clear #error.
+(BLE 5.2), and any future BLE-5.x SoC. Known non-5.x families are rejected in
+to_code; unknown families are capability-checked at compile time via
+`__has_include("app_ble.h")`, a header only on the BLE 5.x include path
+(ble_api.h ships for every SoC, so it cannot be the probe). A non-5.x build
+fails with a clear #error.

 No framework patch is needed: the LibreTiny beken-72xx builder already compiles
 and links the BLE 5.x stack (CFG_SUPPORT_BLE=1 + CFG_BLE_VERSION=BLE_VERSION_5_x;
@@ -21,9 +21,16 @@ import logging

 import esphome.codegen as cg
 from esphome.components import libretiny
-from esphome.components.libretiny.const import FAMILY_BK7231N, FAMILY_BK7238
+from esphome.components.libretiny.const import (
+    FAMILY_BK7231N,
+    FAMILY_BK7231Q,
+    FAMILY_BK7231T,
+    FAMILY_BK7238,
+    FAMILY_BK7251,
+)
 import esphome.config_validation as cv
 from esphome.const import CONF_ENABLE_ON_BOOT, CONF_ID
+from esphome.core import EsphomeError
 from esphome.types import ConfigType

 DEPENDENCIES = ["bk72xx"]
@@ -50,7 +57,31 @@ CONFIG_SCHEMA = cv.Schema(
 request_scan_listener_slot = cg.slot_counter("BK72XX_BLE_SCAN_LISTENER_COUNT")


+def _unsupported_family_message(family: str) -> str | None:
+    if family in (FAMILY_BK7231T, FAMILY_BK7251):
+        return (
+            f"bk72xx_ble does not support {family}: this SoC has the Beken BLE 4.2 "
+            "stack; a BLE 5.x SoC such as BK7231N or BK7238 is required"
+        )
+    if family == FAMILY_BK7231Q:
+        return "bk72xx_ble does not support BK7231Q: this SoC has no BLE"
+    return None
+
+
+def _final_validate(config: ConfigType) -> None:
+    # Warn only: a hard error here would break the validate-only CI fixtures,
+    # 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)
+
+
+FINAL_VALIDATE_SCHEMA = _final_validate
+
+
 async def to_code(config: ConfigType) -> None:
+    if msg := _unsupported_family_message(libretiny.get_libretiny_family()):
+        raise EsphomeError(msg)
+
    var = cg.new_Pvariable(config[CONF_ID])
    await cg.register_component(var, config)

@@ -10,7 +10,7 @@
 #ifdef USE_BK72XX_BLE

 // Same SDK gate as bk72xx_ble.cpp (which carries the explanatory #error).
-#if !defined(CLANG_TIDY) && __has_include("ble_api.h")
+#if !defined(CLANG_TIDY) && __has_include("ble_api.h") && __has_include("app_ble.h")

 extern "C" {
 #include "app_ble.h"     // app_ble_env, app_ble_run, app_ble_reset, actv_state_t,
@@ -115,5 +115,5 @@ BdkOpResult bdk_scan_release(uint8_t activity_idx, bool created, int *err_out) {

 }  // namespace esphome::bk72xx_ble

-#endif  // !CLANG_TIDY && ble_api.h
+#endif  // !CLANG_TIDY && ble_api.h && app_ble.h
 #endif  // USE_BK72XX_BLE
@@ -34,22 +34,26 @@

 // ---------------------------------------------------------------------------
 // SDK-capability gate (not a chip allowlist).
-// This component drives the Beken BLE *5.x* controller via its public API,
-// `ble_api.h`, which the LibreTiny beken-72xx builder ships only for the
-// BLE-5.x SoCs (it selects the `ble_pub` 5.x stack from CFG_BLE_VERSION; the
-// 4.2 SoCs build a different, older API with no ble_api.h). Gate on the header
-// itself so any BLE-5.x Beken chip — present or future — is supported without a
-// hard-coded list, and a non-5.x build fails here with a clear message instead
-// of a cryptic "ble_api.h: No such file or directory".
+// This component drives the Beken BLE *5.x* controller. `ble_api.h` cannot be
+// the probe: it ships for every SoC (driver/include) and merely switches on
+// CFG_BLE_VERSION internally. `app_ble.h` is on the include path only when the
+// LibreTiny beken-72xx builder selects a 5.x stack, so gating on it supports
+// any BLE-5.x chip — present or future — without a hard-coded list, and a
+// non-5.x build fails here with a clear message instead of a cryptic
+// "app_ble.h: No such file or directory".
 // ---------------------------------------------------------------------------
 #if defined(CLANG_TIDY)
 // The clang-tidy environment does not carry the full Beken BDK BLE 5.x API
 // (its ble_api.h variant lacks parts of the 5.x surface), so there is nothing
 // accurate to analyze the SDK calls against — skip the file under analysis.
 #define BK72XX_BLE_NO_SDK
-#elif !__has_include("ble_api.h")
+#elif !__has_include("ble_api.h") || !__has_include("app_ble.h")
+// Also skip the SDK body: #error does not stop the preprocessor, and on a 4.2
+// SoC ble_api.h exists, so without the guard the 5.x symbols would fail one by
+// one and bury this message.
+#define BK72XX_BLE_NO_SDK
 #error \
-    "bk72xx_ble requires a BLE 5.x Beken SDK (ble_api.h). Supported SoCs: BK7231N/BK7236 (BLE 5.1) and BK7238/BK7252N/BK7253 (BLE 5.2). BK7231T/BK7251/BK7271 (BLE 4.2) and BK7231Q (no BLE) are not supported."
+    "bk72xx_ble requires a BLE 5.x Beken SDK (app_ble.h). Supported SoCs: BK7231N/BK7236 (BLE 5.1) and BK7238/BK7252N/BK7253 (BLE 5.2). BK7231T/BK7251/BK7271 (BLE 4.2) and BK7231Q (no BLE) are not supported."
 #endif

 #ifndef BK72XX_BLE_NO_SDK
@@ -37,7 +37,7 @@ from esphome.const import (
    CONF_INTERVAL,
    KEY_TARGET_PLATFORM,
 )
-from esphome.core import CORE, ID, KEY_CORE
+from esphome.core import CORE, ID, KEY_CORE, TimePeriod
 from esphome.types import ConfigType

 CODEOWNERS = ["@Bl00d-B0b"]
@@ -243,19 +243,27 @@ def validate_scan_parameters(config: ConfigType) -> ConfigType:
    return config


+# The historical scan window default shared by the trackers that do not pin
+# their own; also the fallback for esp32's conditional default.
+DEFAULT_SCAN_WINDOW = "30ms"
+
+
 def scan_parameters_schema(
    interval_default: str,
    *,
-    window_default: str = "30ms",
+    window_default: str | Callable[[], TimePeriod] = DEFAULT_SCAN_WINDOW,
 ) -> cv.All:
    """Build the scan_parameters value schema shared by all BLE trackers.

    interval_default and window_default are per chip (e.g. esp32 320/30 ms,
    bk72xx/rp2 100/30 ms — the reference scan rates of the respective stacks;
-    LN882H's SDK recommends 100/50 ms). The `active` option (default on) is
-    unconditional: active scanning is part of the tracker contract — every
-    current proxy client assumes it, so a passive-only tracker must not share
-    this schema.
+    LN882H's SDK recommends 100/50 ms). window_default may also be a zero-arg
+    callable evaluated per validation when the user omits the key (esp32 uses
+    this to record that the window was defaulted, so a later validation step
+    can adjust it once sibling keys are resolved). The `active` option
+    (default on) is unconditional: active scanning is part of the tracker
+    contract — every current proxy client assumes it, so a passive-only
+    tracker must not share this schema.
    """
    schema = {
        cv.Optional(CONF_DURATION, default="5min"): cv.positive_time_period_seconds,
@@ -21,7 +21,7 @@

 namespace esphome::bluetooth_connection {

-static const char *const TAG = "bluetooth_connection.bluedroid";
+static const char *const TAG = "bluetooth_connection";

 using ble_device_base::FAST_CONN_TIMEOUT;
 using ble_device_base::FAST_MAX_CONN_INTERVAL;
@@ -15,7 +15,7 @@

 namespace esphome::bluetooth_connection {

-static const char *const TAG = "bluetooth_connection.rp2";
+static const char *const TAG = "bluetooth_connection";

 using ble_device_base::ESPBTUUID;
 using ble_device_base::GATT_ERR_NOT_CONNECTED;
@@ -103,7 +103,8 @@ struct CameraImageSpec {
 /** Abstract camera base class. Collaborates with API.
 *  1) API server starts and registers as a listener (add_listener)
 *     to receive new images from the camera.
- *  2) New API client connects and creates a new image reader (create_image_reader).
+ *  2) API connection creates an image reader (create_image_reader) when it receives
+ *     the first image it will send.
 *  3) API connection receives protobuf CameraImageRequest and calls request_image.
 *  3.a) API connection receives protobuf CameraImageRequest and calls start_stream.
 *  4) Camera implementation provides JPEG data in the CameraImage and notifies listeners.
@@ -61,7 +61,7 @@ CONFIG_SCHEMA = cv.All(
 )


-def _final_validate(config: ConfigType) -> ConfigType:
+def _final_validate(config: ConfigType) -> None:
    full_config = fv.full_config.get()
    wifi_conf = full_config.get("wifi")

@@ -88,8 +88,6 @@ def _final_validate(config: ConfigType) -> ConfigType:
    socket.consume_sockets(3, "captive_portal")(config)
    socket.consume_sockets(1, "captive_portal", socket.SocketType.UDP)(config)

-    return config
-

 FINAL_VALIDATE_SCHEMA = _final_validate

@@ -10,6 +10,7 @@ CONF_ACCELEROMETER_RANGE = "accelerometer_range"
 CONF_B_CONSTANT = "b_constant"
 CONF_BREATH_VOC_EQUIVALENT = "breath_voc_equivalent"
 CONF_BYTE_ORDER = "byte_order"
+CONF_CHANNEL_COLORS = "channel_colors"
 CONF_CLIMATE_ID = "climate_id"
 CONF_CO2_EQUIVALENT = "co2_equivalent"
 CONF_COLOR_DEPTH = "color_depth"
@@ -22,6 +23,8 @@ CONF_GYROSCOPE_ODR = "gyroscope_odr"
 CONF_GYROSCOPE_RANGE = "gyroscope_range"
 CONF_IAQ = "iaq"
 CONF_IGNORE_NOT_FOUND = "ignore_not_found"
+CONF_IS_WRGB = "is_wrgb"
+CONF_LABEL = "label"
 CONF_LIBRETINY = "libretiny"
 CONF_LOOP = "loop"
 CONF_NOX_INDEX = "nox_index"
@@ -35,6 +38,7 @@ CONF_REQUEST_HEADERS = "request_headers"
 CONF_ROWS = "rows"
 CONF_SCAN_PARAMETERS = "scan_parameters"
 CONF_SHA256 = "sha256"
+CONF_SLOT = "slot"
 CONF_STATE_SAVE_INTERVAL = "state_save_interval"
 CONF_STOP_BITS = "stop_bits"
 CONF_TARGET_COUNT = "target_count"
@@ -5,7 +5,7 @@

 namespace esphome::deep_sleep {

-static const char *const TAG = "deep_sleep.bk72xx";
+static const char *const TAG = "deep_sleep";

 #ifdef USE_DEEP_SLEEP_ON_WAKE
 WakeupCause get_wakeup_cause() {
@@ -3,6 +3,7 @@ import re
 from esphome import automation, core
 from esphome.automation import maybe_simple_id
 import esphome.codegen as cg
+from esphome.components.const import CONF_LABEL
 from esphome.components.number import Number
 from esphome.components.select import Select
 from esphome.components.switch import Switch
@@ -30,7 +31,6 @@ display_menu_base_ns = cg.esphome_ns.namespace("display_menu_base")

 CONF_ROTARY = "rotary"
 CONF_JOYSTICK = "joystick"
-CONF_LABEL = "label"
 CONF_MENU = "menu"
 CONF_BACK = "back"
 CONF_SELECT = "select"
@@ -88,7 +88,7 @@ async def to_code(config):
    cg.add_library("esphome/dsmr_parser", "1.9.0")


-def final_validate(config: ConfigType) -> ConfigType:
+def final_validate(config: ConfigType) -> None:
    full_config = fv.full_config.get()

    for uart_conf in full_config["uart"]:
@@ -102,7 +102,5 @@ def final_validate(config: ConfigType) -> ConfigType:
                )
            break

-    return config
-

 FINAL_VALIDATE_SCHEMA = final_validate
@@ -59,7 +59,7 @@ CONFIG_SCHEMA = (
 )


-def final_validate(config: ConfigType) -> ConfigType:
+def final_validate(config: ConfigType) -> None:
    full_config = fv.full_config.get()

    # Count sensors registered to this hub (IDs are resolved at final_validate stage)
@@ -95,7 +95,7 @@ def final_validate(config: ConfigType) -> ConfigType:
        parity="NONE",
        stop_bits=1,
    )
-    return schema(config)
+    schema(config)


 FINAL_VALIDATE_SCHEMA = final_validate
@@ -153,7 +153,7 @@ def customise_schema(config):
 CONFIG_SCHEMA = customise_schema


-def _final_validate(config):
+def _final_validate(config) -> None:
    spi.final_validate_device_schema(
        "epaper_spi", require_miso=False, require_mosi=True
    )(config)
@@ -170,7 +170,6 @@ def _final_validate(config):
            config[CONF_SHOW_TEST_CARD] = True
    elif CONF_UPDATE_INTERVAL not in config:
        config[CONF_UPDATE_INTERVAL] = update_interval("1min")
-    return config


 FINAL_VALIDATE_SCHEMA = _final_validate
@@ -570,6 +570,9 @@ def get_download_types(storage_json):
    the shape stable so the download panel
    doesn't have to special-case per-platform schemas.
    """
+    # No recorded firmware path means nothing was built; no downloads.
+    if storage_json.firmware_bin_path is None:
+        return []
    return [
        {
            "title": "Factory format (Previously Modern)",
@@ -1070,6 +1073,26 @@ def _parse_pio_platform_version(value):
        return value


+def _normalize_p4_engineering_sample(value: ConfigType) -> bool:
+    """Fill in CONF_ENGINEERING_SAMPLE when unset, warning that production
+    silicon (rev3) is assumed. Returns the normalized flag."""
+    if (engineering_sample := value.get(CONF_ENGINEERING_SAMPLE)) is None:
+        _LOGGER.warning(
+            "Defaulting to ESP32-P4 production silicon (rev3).\n"
+            "If you have an early engineering sample (pre-rev3), add this to your config:\n"
+            "\n"
+            "  esp32:\n"
+            "    engineering_sample: true\n"
+            "\n"
+            "To check your chip revision, look for 'chip revision: vX.Y' in the boot log.\n"
+            "Engineering samples will show a revision below v3.0.\n"
+            "The 'debug:' component also reports the revision (e.g. Revision: 100 = v1.0, 300 = v3.0)."
+        )
+        engineering_sample = False
+        value[CONF_ENGINEERING_SAMPLE] = engineering_sample
+    return engineering_sample
+
+
 def _detect_variant(value):
    board = value.get(CONF_BOARD)
    variant = value.get(CONF_VARIANT)
@@ -1082,6 +1105,8 @@ def _detect_variant(value):
        # name rather than carrying a PIO board name through the IDF build.
        if CORE.using_toolchain_esp_idf:
            value = value.copy()
+            if variant == VARIANT_ESP32P4:
+                _normalize_p4_engineering_sample(value)
            value[CONF_BOARD] = VARIANT_FRIENDLY[variant].lower()
            return value
        if variant not in STANDARD_BOARDS:
@@ -1092,22 +1117,8 @@ def _detect_variant(value):
            )
        value = value.copy()
        value[CONF_BOARD] = STANDARD_BOARDS[variant]
-        if variant == VARIANT_ESP32P4:
-            engineering_sample = value.get(CONF_ENGINEERING_SAMPLE)
-            if engineering_sample is None:
-                _LOGGER.warning(
-                    "No board specified for ESP32-P4. Defaulting to production silicon (rev3).\n"
-                    "If you have an early engineering sample (pre-rev3), add this to your config:\n"
-                    "\n"
-                    "  esp32:\n"
-                    "    engineering_sample: true\n"
-                    "\n"
-                    "To check your chip revision, look for 'chip revision: vX.Y' in the boot log.\n"
-                    "Engineering samples will show a revision below v3.0.\n"
-                    "The 'debug:' component also reports the revision (e.g. Revision: 100 = v1.0, 300 = v3.0)."
-                )
-            elif engineering_sample:
-                value[CONF_BOARD] = "esp32-p4-evboard"
+        if variant == VARIANT_ESP32P4 and _normalize_p4_engineering_sample(value):
+            value[CONF_BOARD] = "esp32-p4-evboard"
    elif board in BOARDS:
        variant = variant or BOARDS[board][KEY_VARIANT]
        if variant != BOARDS[board][KEY_VARIANT]:
@@ -1117,6 +1128,14 @@ def _detect_variant(value):
            )
        value = value.copy()
        value[CONF_VARIANT] = variant
+        if variant == VARIANT_ESP32P4:
+            board_is_es = BOARDS[board].get("engineering_sample", False)
+            engineering_sample = value.setdefault(CONF_ENGINEERING_SAMPLE, board_is_es)
+            if engineering_sample != board_is_es:
+                raise cv.Invalid(
+                    f"'{CONF_ENGINEERING_SAMPLE}' does not match board '{board}'",
+                    path=[CONF_ENGINEERING_SAMPLE],
+                )
    elif not variant:
        raise cv.Invalid(
            "This board is unknown, if you are sure you want to compile with this board selection, "
@@ -1128,6 +1147,9 @@ def _detect_variant(value):
            "This board is unknown; the specified variant '%s' will be used but this may not work as expected.",
            variant,
        )
+        if variant == VARIANT_ESP32P4:
+            value = value.copy()
+            _normalize_p4_engineering_sample(value)
    return value


@@ -1365,7 +1387,7 @@ def _validate_signed_ota_keys(config: ConfigType) -> ConfigType:
    return config


-def final_validate(config):
+def final_validate(config) -> None:
    # Imported locally to avoid circular import issues
    from esphome.components.psram import DOMAIN as PSRAM_DOMAIN

@@ -1431,20 +1453,6 @@ def final_validate(config):
                path=[CONF_ENGINEERING_SAMPLE],
            )
        )
-    if (
-        config[CONF_VARIANT] == VARIANT_ESP32P4
-        and config.get(CONF_ENGINEERING_SAMPLE) is not None
-    ):
-        board_is_es = BOARDS.get(config[CONF_BOARD], {}).get(
-            "engineering_sample", False
-        )
-        if config[CONF_ENGINEERING_SAMPLE] != board_is_es:
-            errs.append(
-                cv.Invalid(
-                    f"'{CONF_ENGINEERING_SAMPLE}' does not match board '{config[CONF_BOARD]}'",
-                    path=[CONF_ENGINEERING_SAMPLE],
-                )
-            )
    if advanced[CONF_EXECUTE_FROM_PSRAM]:
        if config[CONF_VARIANT] not in {VARIANT_ESP32S3, VARIANT_ESP32P4}:
            errs.append(
@@ -1626,8 +1634,6 @@ def final_validate(config):
    if errs:
        raise cv.MultipleInvalid(errs)

-    return config
-

 CONF_SDKCONFIG_OPTIONS = "sdkconfig_options"
 CONF_ENABLE_LWIP_DHCP_SERVER = "enable_lwip_dhcp_server"
@@ -2517,15 +2523,14 @@ async def to_code(config):
            f"CONFIG_ESPTOOLPY_FLASHFREQ_{flash_frequency[:-3]}M", True
        )

-    # ESP32-P4: ESP-IDF 5.5.3 changed the default of ESP32P4_SELECTS_REV_LESS_V3
-    # from y to n. PlatformIO uses sections.ld.in (for rev <3) or
-    # sections.rev3.ld.in (for rev >=3) based on board definition.
-    # Set the sdkconfig option to match the board's chip revision.
+    # ESP32-P4: pre-v3 and rev3 (v3.0+) silicon are not binary compatible.
+    # CONFIG_ESP32P4_SELECTS_REV_LESS_V3 selects which layout ESP-IDF links;
+    # validation normalizes CONF_ENGINEERING_SAMPLE from the board when unset.
    if variant == VARIANT_ESP32P4:
-        is_eng_sample = BOARDS.get(config[CONF_BOARD], {}).get(
-            "engineering_sample", False
+        add_idf_sdkconfig_option(
+            "CONFIG_ESP32P4_SELECTS_REV_LESS_V3",
+            config.get(CONF_ENGINEERING_SAMPLE, False),
        )
-        add_idf_sdkconfig_option("CONFIG_ESP32P4_SELECTS_REV_LESS_V3", is_eng_sample)

    # Set minimum chip revision for ESP32 variant
    # Setting this to 3.0 or higher reduces flash size by excluding workaround code,
@@ -360,17 +360,6 @@ static bool has_fault_addr() {
  return s_raw_crash_data.exception == PANIC_EXCEPTION_FAULT && !s_raw_crash_data.pseudo_excause;
 }

-// Append both cores' backtrace addresses to buf; returns the new position.
-static int append_all_backtraces(char *buf, int size, int pos) {
-  pos = append_addrs_to_hint(buf, size, pos, s_raw_crash_data.backtrace, s_raw_crash_data.backtrace_count,
-                             s_raw_crash_data.reg_frame_count);
-#if SOC_CPU_CORES_NUM > 1
-  pos = append_addrs_to_hint(buf, size, pos, s_raw_crash_data.other_backtrace, s_raw_crash_data.other_backtrace_count,
-                             s_raw_crash_data.other_reg_frame_count);
-#endif
-  return pos;
-}
-
 // The record was captured by a different firmware build (it survives soft
 // resets, including the OTA reboot), so symbolizing its addresses against the
 // current ELF would produce misleading symbols. Print them with lowercase
@@ -443,11 +432,23 @@ void crash_handler_log() {
  }
 #endif

-  // Build addr2line hint with all captured addresses for easy copy-paste
+  // Build addr2line hints for easy copy-paste. One line per core: the two
+  // backtraces are separate stacks, and a combined list decodes as one
+  // impossible call chain (and can overflow the buffer, dropping addresses).
+  static const char *const ADDR2LINE_CMD = "addr2line -pfiaC -e firmware.elf";
  char hint[256];
-  int pos = snprintf(hint, sizeof(hint), "Use: addr2line -pfiaC -e firmware.elf 0x%08" PRIX32, s_raw_crash_data.pc);
-  append_all_backtraces(hint, sizeof(hint), pos);
+  int pos = snprintf(hint, sizeof(hint), "Use: %s 0x%08" PRIX32, ADDR2LINE_CMD, s_raw_crash_data.pc);
+  append_addrs_to_hint(hint, sizeof(hint), pos, s_raw_crash_data.backtrace, s_raw_crash_data.backtrace_count,
+                       s_raw_crash_data.reg_frame_count);
  ESP_LOGE(TAG, "%s", hint);
+#if SOC_CPU_CORES_NUM > 1
+  if (s_raw_crash_data.other_backtrace_count > 0) {
+    pos = snprintf(hint, sizeof(hint), "Other core: %s", ADDR2LINE_CMD);
+    append_addrs_to_hint(hint, sizeof(hint), pos, s_raw_crash_data.other_backtrace,
+                         s_raw_crash_data.other_backtrace_count, s_raw_crash_data.other_reg_frame_count);
+    ESP_LOGE(TAG, "%s", hint);
+  }
+#endif
 }

 }  // namespace esphome::esp32
@@ -443,7 +443,7 @@ def validate_connection_slots(max_connections: int) -> None:
    )


-def final_validation(config):
+def final_validation(config) -> None:
    validate_variant(config)
    if (name := config.get(CONF_NAME)) is not None:
        full_config = fv.full_config.get()
@@ -514,8 +514,6 @@ def final_validation(config):
    # For newer chips (C3/S3/etc), different configs are used automatically
    add_idf_sdkconfig_option("CONFIG_BTDM_CTRL_BLE_MAX_CONN", max_connections)

-    return config
-

 FINAL_VALIDATE_SCHEMA = final_validation

@@ -648,6 +648,8 @@ void ESP32BLE::gap_event_handler(esp_gap_ble_cb_event_t event, esp_ble_gap_cb_pa
    case ESP_GAP_BLE_SET_PKT_LENGTH_COMPLETE_EVT:
    case ESP_GAP_BLE_PHY_UPDATE_COMPLETE_EVT:       // BLE 5.0 PHY update complete
    case ESP_GAP_BLE_CHANNEL_SELECT_ALGORITHM_EVT:  // BLE 5.0 channel selection algorithm
+    case ESP_GAP_BLE_LOCAL_IR_EVT:                  // Local identity root key generated at security init
+    case ESP_GAP_BLE_LOCAL_ER_EVT:                  // Local encryption root key generated at security init
      return;

    default:
@@ -307,7 +307,7 @@ def create_device_information_service(config):
    return config


-def final_validate_config(config):
+def final_validate_config(config) -> None:
    # Validate max_clients does not exceed esp32_ble max_connections
    max_clients = config[CONF_MAX_CLIENTS]
    if max_clients > 1:
@@ -355,7 +355,6 @@ def final_validate_config(config):
            raise cv.Invalid(
                f"Characteristic {char_config[CONF_UUID]} has both a set_value action and a templated value"
            )
-    return config


 def validate_value_type(value_config):
@@ -1,5 +1,7 @@
 from __future__ import annotations

+import copy
+from dataclasses import dataclass
 import logging

 from esphome import automation
@@ -8,6 +10,7 @@ from esphome.components import ble_device_base, esp32_ble, ota
 from esphome.components.const import CONF_ON_SCAN_END, CONF_SCAN_PARAMETERS, CONF_WINDOW
 from esphome.components.esp32 import (
    add_idf_sdkconfig_option,
+    idf_version,
    request_bluetooth,
    request_software_coexistence,
 )
@@ -35,10 +38,12 @@ from esphome.const import (
    CONF_SERVICE_UUID,
    CONF_TRIGGER_ID,
 )
-from esphome.core import CORE, CoroPriority, coroutine_with_priority
+from esphome.core import CORE, CoroPriority, TimePeriod, coroutine_with_priority
 from esphome.enum import StrEnum
 from esphome.types import ConfigType

+DOMAIN = "esp32_ble_tracker"
+
 AUTO_LOAD = ["ble_device_base", "esp32_ble"]
 DEPENDENCIES = ["esp32"]
 CODEOWNERS = ["@bdraco"]
@@ -125,10 +130,71 @@ def validate_max_connections_deprecated(config: ConfigType) -> ConfigType:
    return config


+# ESP-IDF 5.5.5 fixed a coexistence bug on the ESP32 where BLE scans ran far
+# longer than the configured window (espressif/esp-idf#18931). Before the fix,
+# the default 30 ms window in a 320 ms interval effectively scanned at a much
+# higher duty cycle than requested; with the fix, that same default only
+# listens 9.4 % of the time and misses most advertisements when wifi shares
+# the radio. Espressif recommends setting the window equal to the interval in
+# that case: the coexistence arbiter still shares the radio with wifi, and
+# BLE uses the airtime wifi does not claim.
+IDF_SCAN_WINDOW_FIX_VERSION = cv.Version(5, 5, 5)
+
+
+@dataclass
+class TrackerData:
+    """Per-run validation state, namespaced under DOMAIN in CORE.data."""
+
+    scan_window_defaulted: bool = False
+
+
+def _get_data() -> TrackerData:
+    if DOMAIN not in CORE.data:
+        CORE.data[DOMAIN] = TrackerData()
+    return CORE.data[DOMAIN]
+
+
+def _scan_window_default() -> TimePeriod:
+    """Schema default for the scan window.
+
+    Records that the user did not set a window, so _raise_defaulted_scan_window
+    can tell a defaulted 30 ms from an explicit one; the raise itself must wait
+    for the outer schema because it depends on software_coexistence, a sibling
+    key not yet resolved here.
+    """
+    _get_data().scan_window_defaulted = True
+    return cv.positive_time_period(ble_device_base.DEFAULT_SCAN_WINDOW)
+
+
+def _raise_defaulted_scan_window(config: ConfigType) -> ConfigType:
+    """Raise a defaulted scan window to the interval where that is safe.
+
+    Only when the coexistence arbiter is compiled in (software_coexistence,
+    present iff wifi is configured and not disabled by the user) and the IDF
+    honors the window strictly (>= 5.5.5); without the arbiter a full-duty
+    scan would starve wifi outright, and a user-set window is never touched.
+    Raising to the interval cannot invalidate the already-validated
+    parameters, so no re-validation is needed.
+    """
+    if (
+        _get_data().scan_window_defaulted
+        and config.get(CONF_SOFTWARE_COEXISTENCE)
+        and idf_version() >= IDF_SCAN_WINDOW_FIX_VERSION
+    ):
+        params = config[CONF_SCAN_PARAMETERS]
+        # Copy so the config dump shows a plain value instead of a YAML
+        # anchor/alias pair pointing at the interval.
+        params[CONF_WINDOW] = copy.copy(params[CONF_INTERVAL])
+    return config
+
+
 # 320 ms is the ESP-IDF reference scan interval; the shared schema also
 # tightens validation to the controller's 2.5 ms .. 10240 ms range and rejects
 # window/interval pairs that collapse to the same 0.625 ms unit count.
-SCAN_PARAMETERS_SCHEMA = ble_device_base.scan_parameters_schema("320ms")
+# The window default is conditional (see _scan_window_default above).
+SCAN_PARAMETERS_SCHEMA = ble_device_base.scan_parameters_schema(
+    "320ms", window_default=_scan_window_default
+)

 # Codegen helpers are owned by ble_device_base; kept under the historical names
 # here for the components that import them from this module.
@@ -183,6 +249,7 @@ CONFIG_SCHEMA = cv.All(
        }
    ).extend(cv.COMPONENT_SCHEMA),
    validate_max_connections_deprecated,
+    _raise_defaulted_scan_window,
 )


@@ -3,7 +3,7 @@ from pathlib import Path

 from esphome import pins
 from esphome.components import esp32
-from esphome.components.const import CONF_USE_PSRAM
+from esphome.components.const import CONF_SLOT, CONF_USE_PSRAM
 import esphome.config_validation as cv
 from esphome.const import (
    CONF_CLK_PIN,
@@ -16,8 +16,10 @@ from esphome.const import (
    CONF_VARIANT,
 )
 from esphome.cpp_generator import add_define
+from esphome.types import ConfigType

 CODEOWNERS = ["@swoboda1337"]
+DEPENDENCIES = ["esp32"]
 # esp32_ble raises the task watchdog around the remote BT controller bring-up
 AUTO_LOAD = ["watchdog"]

@@ -33,7 +35,6 @@ CONF_DATA_READY_PIN = "data_ready_pin"
 CONF_HANDSHAKE_ACTIVE_HIGH = "handshake_active_high"
 CONF_HANDSHAKE_PIN = "handshake_pin"
 CONF_SDIO_FREQUENCY = "sdio_frequency"
-CONF_SLOT = "slot"
 CONF_SPI_MODE = "spi_mode"

 # Shared fields for both transport modes
@@ -125,6 +126,21 @@ CONFIG_SCHEMA = cv.typed_schema(
 )


+def _final_validate(config: ConfigType) -> None:
+    # The esp_hosted releases compatible with older ESP-IDF versions crash at
+    # boot with a heap double free in the SDIO RX path (fixed in esp_hosted
+    # 2.11.0, which requires ESP-IDF 5.3), so reject them at validation time.
+    if (idf_ver := esp32.idf_version()) < cv.Version(5, 3, 0):
+        raise cv.Invalid(
+            f"esp32_hosted requires ESP-IDF 5.3 or newer, got {idf_ver}. "
+            "Remove the framework version from your configuration to use the "
+            "recommended version, or pin a version at or above 5.3."
+        )
+
+
+FINAL_VALIDATE_SCHEMA = _final_validate
+
+
 def _configure_sdio(config):
    slot = config[CONF_SLOT]
    esp32.add_idf_sdkconfig_option(
@@ -252,18 +268,14 @@ async def to_code(config):
    if config[CONF_USE_PSRAM]:
        esp32.add_idf_sdkconfig_option("CONFIG_ESP_HOSTED_MEMPOOL_PREFER_SPIRAM", True)

-    # Library versions
+    # Library versions; this component set requires ESP-IDF 5.3 or newer,
+    # which is enforced at validation time.
    idf_ver = esp32.idf_version()
    os.environ["ESP_IDF_VERSION"] = f"{idf_ver.major}.{idf_ver.minor}"
-    if idf_ver >= cv.Version(5, 5, 0):
-        esp32.add_idf_component(name="espressif/esp_wifi_remote", ref="1.6.3")
-        esp32.add_idf_component(name="espressif/wifi_remote_over_eppp", ref="0.3.3")
-        esp32.add_idf_component(name="espressif/eppp_link", ref="1.1.5")
-        esp32.add_idf_component(name="espressif/esp_hosted", ref="2.12.12")
-    else:
-        esp32.add_idf_component(name="espressif/esp_wifi_remote", ref="0.13.0")
-        esp32.add_idf_component(name="espressif/eppp_link", ref="0.2.0")
-        esp32.add_idf_component(name="espressif/esp_hosted", ref="2.0.11")
+    esp32.add_idf_component(name="espressif/esp_wifi_remote", ref="1.6.3")
+    esp32.add_idf_component(name="espressif/wifi_remote_over_eppp", ref="0.3.3")
+    esp32.add_idf_component(name="espressif/eppp_link", ref="1.1.5")
+    esp32.add_idf_component(name="espressif/esp_hosted", ref="2.12.12")
    esp32.add_extra_script(
        "post",
        "esp32_hosted.py",
@@ -221,46 +221,12 @@ void ESP32RMTLEDStripLightOutput::write_state(light::LightState *state) {
 }

 light::ESPColorView ESP32RMTLEDStripLightOutput::get_view_internal(int32_t index) const {
-  int32_t r = 0, g = 0, b = 0;
-  switch (this->rgb_order_) {
-    case ORDER_RGB:
-      r = 0;
-      g = 1;
-      b = 2;
-      break;
-    case ORDER_RBG:
-      r = 0;
-      g = 2;
-      b = 1;
-      break;
-    case ORDER_GRB:
-      r = 1;
-      g = 0;
-      b = 2;
-      break;
-    case ORDER_GBR:
-      r = 2;
-      g = 0;
-      b = 1;
-      break;
-    case ORDER_BGR:
-      r = 2;
-      g = 1;
-      b = 0;
-      break;
-    case ORDER_BRG:
-      r = 1;
-      g = 2;
-      b = 0;
-      break;
-  }
-  uint8_t multiplier = this->is_rgbw_ || this->is_wrgb_ ? 4 : 3;
-  uint8_t white = this->is_wrgb_ ? 0 : this->white_index_;
-
-  return {this->buf_ + (index * multiplier) + r + (white <= r),
-          this->buf_ + (index * multiplier) + g + (white <= g),
-          this->buf_ + (index * multiplier) + b + (white <= b),
-          this->is_rgbw_ || this->is_wrgb_ ? this->buf_ + (index * multiplier) + white : nullptr,
+  const light::ChannelColors &colors = this->channel_colors_;
+  uint8_t *led = this->buf_ + (index * colors.bytes_per_led());
+  return {led + colors.r,
+          led + colors.g,
+          led + colors.b,
+          colors.has_white() ? led + colors.w : nullptr,
          &this->effect_data_[index],
          &this->correction_};
 }
@@ -271,46 +237,12 @@ void ESP32RMTLEDStripLightOutput::dump_config() {
                "  Pin: %u",
                this->pin_);
  ESP_LOGCONFIG(TAG, "  RMT Symbols: %" PRIu32, this->rmt_symbols_);
-  const char *rgb_order;
-  switch (this->rgb_order_) {
-    case ORDER_RGB:
-      rgb_order = "RGB";
-      break;
-    case ORDER_RBG:
-      rgb_order = "RBG";
-      break;
-    case ORDER_GRB:
-      rgb_order = "GRB";
-      break;
-    case ORDER_GBR:
-      rgb_order = "GBR";
-      break;
-    case ORDER_BGR:
-      rgb_order = "BGR";
-      break;
-    case ORDER_BRG:
-      rgb_order = "BRG";
-      break;
-    default:
-      rgb_order = "UNKNOWN";
-      break;
-  }
-  if (this->is_rgbw_ || this->is_wrgb_) {
-    char rgbw_order[5];
-    uint8_t white = this->is_wrgb_ ? 0 : this->white_index_;
-    uint8_t rgb_index = 0;
-    for (uint8_t i = 0; i < 4; i++) {
-      rgbw_order[i] = i == white ? 'W' : rgb_order[rgb_index++];
-    }
-    rgbw_order[4] = '\0';
-    ESP_LOGCONFIG(TAG, "  RGBW Order: %s", rgbw_order);
-  } else {
-    ESP_LOGCONFIG(TAG, "  RGB Order: %s", rgb_order);
-  }
+  char channel_colors[5];
  ESP_LOGCONFIG(TAG,
+                "  Channel colors: %s\n"
                "  Max refresh rate: %" PRIu32 "\n"
                "  Number of LEDs: %u",
-                this->max_refresh_rate_.value_or(0), this->num_leds_);
+                this->channel_colors_.to_string(channel_colors), this->max_refresh_rate_.value_or(0), this->num_leds_);
 }

 float ESP32RMTLEDStripLightOutput::get_setup_priority() const { return setup_priority::HARDWARE; }
@@ -3,6 +3,7 @@
 #ifdef USE_ESP32

 #include "esphome/components/light/addressable_light.h"
+#include "esphome/components/light/channel_colors.h"
 #include "esphome/components/light/light_output.h"
 #include "esphome/core/color.h"
 #include "esphome/core/component.h"
@@ -15,15 +16,6 @@

 namespace esphome::esp32_rmt_led_strip {

-enum RGBOrder : uint8_t {
-  ORDER_RGB,
-  ORDER_RBG,
-  ORDER_GRB,
-  ORDER_GBR,
-  ORDER_BGR,
-  ORDER_BRG,
-};
-
 struct LedParams {
  rmt_symbol_word_t bit0;
  rmt_symbol_word_t bit1;
@@ -39,7 +31,7 @@ class ESP32RMTLEDStripLightOutput final : public light::AddressableLight {
  int32_t size() const override { return this->num_leds_; }
  light::LightTraits get_traits() override {
    auto traits = light::LightTraits();
-    if (this->is_rgbw_ || this->is_wrgb_) {
+    if (this->channel_colors_.has_white()) {
      traits.set_supported_color_modes({light::ColorMode::RGB_WHITE, light::ColorMode::WHITE});
    } else {
      traits.set_supported_color_modes({light::ColorMode::RGB});
@@ -50,13 +42,7 @@ class ESP32RMTLEDStripLightOutput final : public light::AddressableLight {
  void set_pin(uint8_t pin) { this->pin_ = pin; }
  void set_inverted(bool inverted) { this->invert_out_ = inverted; }
  void set_num_leds(uint16_t num_leds) { this->num_leds_ = num_leds; }
-  void set_is_rgbw(bool is_rgbw) { this->is_rgbw_ = is_rgbw; }
-  void set_is_wrgb(bool is_wrgb) { this->is_wrgb_ = is_wrgb; }
-  void set_rgbw_order(uint8_t white_index) {
-    this->is_rgbw_ = true;
-    this->is_wrgb_ = false;
-    this->white_index_ = white_index;
-  }
+  void set_channel_colors(light::ChannelColors channel_colors) { this->channel_colors_ = channel_colors; }
  void set_use_dma(bool use_dma) { this->use_dma_ = use_dma; }
  void set_use_psram(bool use_psram) { this->use_psram_ = use_psram; }

@@ -66,7 +52,6 @@ class ESP32RMTLEDStripLightOutput final : public light::AddressableLight {
  void set_led_params(uint32_t bit0_high, uint32_t bit0_low, uint32_t bit1_high, uint32_t bit1_low,
                      uint32_t reset_time_high, uint32_t reset_time_low);

-  void set_rgb_order(RGBOrder rgb_order) { this->rgb_order_ = rgb_order; }
  void set_rmt_symbols(uint32_t rmt_symbols) { this->rmt_symbols_ = rmt_symbols; }

  void clear_effect_data() override {
@@ -79,7 +64,7 @@ class ESP32RMTLEDStripLightOutput final : public light::AddressableLight {
 protected:
  light::ESPColorView get_view_internal(int32_t index) const override;

-  size_t get_buffer_size_() const { return this->num_leds_ * (this->is_rgbw_ || this->is_wrgb_ ? 4 : 3); }
+  size_t get_buffer_size_() const { return this->num_leds_ * this->channel_colors_.bytes_per_led(); }

  uint8_t *buf_{nullptr};
  uint8_t *effect_data_{nullptr};
@@ -94,15 +79,11 @@ class ESP32RMTLEDStripLightOutput final : public light::AddressableLight {
  uint32_t rmt_symbols_{48};
  uint8_t pin_;
  uint16_t num_leds_;
-  bool is_rgbw_{false};
-  bool is_wrgb_{false};
-  // An index after the RGB channels makes offset adjustment a no-op for three-channel strips.
-  uint8_t white_index_{3};
  bool use_dma_{false};
  bool use_psram_{false};
  bool invert_out_{false};

-  RGBOrder rgb_order_{ORDER_RGB};
+  light::ChannelColors channel_colors_{0, 1, 2, light::ChannelColors::NO_WHITE};

  uint32_t last_refresh_{0};
  optional<uint32_t> max_refresh_rate_{};
@@ -1,10 +1,9 @@
 from dataclasses import dataclass
-import logging

 from esphome import pins
 import esphome.codegen as cg
 from esphome.components import esp32, esp32_rmt, light
-from esphome.components.const import CONF_USE_PSRAM
+from esphome.components.const import CONF_CHANNEL_COLORS, CONF_IS_WRGB, CONF_USE_PSRAM
 from esphome.components.esp32 import include_builtin_idf_component
 import esphome.config_validation as cv
 from esphome.const import (
@@ -22,8 +21,6 @@ from esphome.const import (
 )
 from esphome.types import ConfigType

-_LOGGER = logging.getLogger(__name__)
-
 CODEOWNERS = ["@jesserockz"]
 DEPENDENCIES = ["esp32"]

@@ -32,17 +29,6 @@ ESP32RMTLEDStripLightOutput = esp32_rmt_led_strip_ns.class_(
    "ESP32RMTLEDStripLightOutput", light.AddressableLight
 )

-RGBOrder = esp32_rmt_led_strip_ns.enum("RGBOrder")
-
-RGB_ORDERS = {
-    "RGB": RGBOrder.ORDER_RGB,
-    "RBG": RGBOrder.ORDER_RBG,
-    "GRB": RGBOrder.ORDER_GRB,
-    "GBR": RGBOrder.ORDER_GBR,
-    "BGR": RGBOrder.ORDER_BGR,
-    "BRG": RGBOrder.ORDER_BRG,
-}
-

@dataclass
 class LEDStripTimings:
@@ -62,8 +48,6 @@ CHIPSETS = {
    "SM16703": LEDStripTimings(300, 900, 900, 300, 0, 0),
 }

-CONF_IS_WRGB = "is_wrgb"
-CONF_RGBW_ORDER = "rgbw_order"
 CONF_BIT0_HIGH = "bit0_high"
 CONF_BIT0_LOW = "bit0_low"
 CONF_BIT1_HIGH = "bit1_high"
@@ -72,26 +56,6 @@ CONF_RESET_HIGH = "reset_high"
 CONF_RESET_LOW = "reset_low"


-def _validate_rgbw_order(value: str) -> str:
-    value = cv.string(value).upper()
-    if len(value) != 4 or set(value) != set("RGBW"):
-        raise cv.Invalid("RGBW order must be a permutation of RGBW")
-    return value
-
-
-def _split_rgbw_order(rgbw_order: str) -> tuple[str, int]:
-    return rgbw_order.replace("W", ""), rgbw_order.index("W")
-
-
-def _validate_rgbw_order_exclusivity(config: ConfigType) -> ConfigType:
-    if CONF_RGBW_ORDER in config and (config[CONF_IS_RGBW] or config[CONF_IS_WRGB]):
-        raise cv.Invalid(
-            f"'{CONF_RGBW_ORDER}' cannot be used with '{CONF_IS_RGBW}' or "
-            f"'{CONF_IS_WRGB}'"
-        )
-    return config
-
-
 CONFIG_SCHEMA = cv.All(
    esp32.only_on_variant(
        unsupported=list(esp32_rmt.VARIANTS_NO_RMT),
@@ -102,8 +66,11 @@ CONFIG_SCHEMA = cv.All(
            cv.GenerateID(CONF_OUTPUT_ID): cv.declare_id(ESP32RMTLEDStripLightOutput),
            cv.Required(CONF_PIN): pins.internal_gpio_output_pin_schema,
            cv.Required(CONF_NUM_LEDS): cv.positive_not_null_int,
-            cv.Optional(CONF_RGB_ORDER): cv.enum(RGB_ORDERS, upper=True),
-            cv.Optional(CONF_RGBW_ORDER): _validate_rgbw_order,
+            cv.Optional(CONF_CHANNEL_COLORS): light.validate_channel_colors,
+            # Deprecated in favour of CONF_CHANNEL_COLORS, remove in 2027.3.0
+            cv.Optional(CONF_RGB_ORDER): cv.one_of(*light.RGB_ORDERS, upper=True),
+            cv.Optional(CONF_IS_RGBW): cv.boolean,
+            cv.Optional(CONF_IS_WRGB): cv.boolean,
            cv.SplitDefault(
                CONF_RMT_SYMBOLS,
                esp32=192,
@@ -117,8 +84,6 @@ CONFIG_SCHEMA = cv.All(
            ): cv.int_range(min=2),
            cv.Optional(CONF_MAX_REFRESH_RATE): cv.positive_time_period_microseconds,
            cv.Optional(CONF_CHIPSET): cv.one_of(*CHIPSETS, upper=True),
-            cv.Optional(CONF_IS_RGBW, default=False): cv.boolean,
-            cv.Optional(CONF_IS_WRGB, default=False): cv.boolean,
            cv.Optional(CONF_USE_DMA): cv.All(
                esp32.only_on_variant(
                    supported=[esp32.VARIANT_ESP32P4, esp32.VARIANT_ESP32S3]
@@ -153,12 +118,13 @@ CONFIG_SCHEMA = cv.All(
        }
    ).extend(cv.COMPONENT_SCHEMA),
    cv.has_exactly_one_key(CONF_CHIPSET, CONF_BIT0_HIGH),
-    cv.has_exactly_one_key(CONF_RGB_ORDER, CONF_RGBW_ORDER),
-    _validate_rgbw_order_exclusivity,
+    light.migrate_channel_colors(
+        removed_in="2027.3.0", component="esp32_rmt_led_strip"
+    ),
 )


-async def to_code(config):
+async def to_code(config: ConfigType) -> None:
    # Re-enable ESP-IDF's RMT driver (excluded by default to save compile time)
    include_builtin_idf_component("esp_driver_rmt")

@@ -198,14 +164,9 @@ async def to_code(config):
            )
        )

-    if (rgbw_order := config.get(CONF_RGBW_ORDER)) is not None:
-        rgb_order, white_index = _split_rgbw_order(rgbw_order)
-        cg.add(var.set_rgb_order(RGB_ORDERS[rgb_order]))
-        cg.add(var.set_rgbw_order(white_index))
-    else:
-        cg.add(var.set_rgb_order(config[CONF_RGB_ORDER]))
-        cg.add(var.set_is_rgbw(config[CONF_IS_RGBW]))
-        cg.add(var.set_is_wrgb(config[CONF_IS_WRGB]))
+    cg.add(
+        var.set_channel_colors(light.channel_colors_struct(config[CONF_CHANNEL_COLORS]))
+    )
    cg.add(var.set_use_psram(config[CONF_USE_PSRAM]))
    cg.add(var.set_rmt_symbols(config[CONF_RMT_SYMBOLS]))
    if CONF_USE_DMA in config:
@@ -113,6 +113,9 @@ def get_download_types(storage_json):
    the shape stable so the download panel
    doesn't have to special-case per-platform schemas.
    """
+    # No recorded firmware path means nothing was built; no downloads.
+    if storage_json.firmware_bin_path is None:
+        return []
    return [
        {
            "title": "Standard format",
@@ -355,7 +355,7 @@ def _validate(config):
                    "  clk:\n"
                    "    mode: %s\n"
                    "    pin: %s\n"
-                    "Removal scheduled for 2026.9.0.",
+                    "Removal scheduled for 2026.11.0.",
                    config[CONF_CLK_MODE],
                    mode,
                    pin,
@@ -767,7 +767,7 @@ def _final_validate_rmii_pins(config: ConfigType) -> None:
            raise cv.Invalid(error_msg, path=pin_path)


-def _final_validate(config: ConfigType) -> ConfigType:
+def _final_validate(config: ConfigType) -> None:
    """Final validation for Ethernet component."""
    # Allow ethernet + wifi coexistence only when both are declared in network: priority:.
    if "wifi" in fv.full_config.get():
@@ -787,7 +787,6 @@ def _final_validate(config: ConfigType) -> ConfigType:

    _final_validate_spi(config)
    _final_validate_rmii_pins(config)
-    return config


 FINAL_VALIDATE_SCHEMA = _final_validate
@@ -60,14 +60,13 @@ CONFIG_SCHEMA = cv.All(
 )


-def _final_validate(config):
+def _final_validate(config) -> None:
    if CORE.is_esp8266 and CONF_RESETS_REQUIRED in config:
        fconfig = full_config.get()
        if not fconfig.get_config_for_path([KEY_ESP8266, CONF_RESTORE_FROM_FLASH]):
            raise cv.Invalid(
                "'resets_required' needs 'restore_from_flash' to be enabled in the  'esp8266' configuration"
            )
-    return config


 FINAL_VALIDATE_SCHEMA = _final_validate
@@ -23,6 +23,7 @@ from esphome.components.image import (
    get_image_type_enum,
    get_transparency_enum,
    is_svg_file,
+    validate_byte_order,
    validate_settings,
    validate_transparency,
    validate_type,
@@ -200,7 +201,7 @@ OPTIONS_SCHEMA = {
        "NONE", "FLOYDSTEINBERG", upper=True
    ),
    cv.Optional(CONF_INVERT_ALPHA, default=False): cv.boolean,
-    cv.Optional(CONF_BYTE_ORDER): cv.one_of("BIG_ENDIAN", "LITTLE_ENDIAN", upper=True),
+    cv.Optional(CONF_BYTE_ORDER): validate_byte_order,
    cv.Optional(CONF_TRANSPARENCY, default=CONF_OPAQUE): validate_transparency(),
 }

@@ -225,7 +226,7 @@ def image_schema(class_: MockObjClass = Image_) -> cv.Schema:
    )


-def validate_image_final(config: ConfigType) -> ConfigType:
+def validate_image_final(config: ConfigType) -> None:
    """Per-entry final validation, shared by file-backed image platforms.

    For LVGL 9 the default byte order for RGB565 images is little-endian, so
@@ -240,7 +241,6 @@ def validate_image_final(config: ConfigType) -> ConfigType:
            )
    else:
        config[CONF_BYTE_ORDER] = "LITTLE_ENDIAN"
-    return config


 async def new_image(config: ConfigType) -> MockObj:
@@ -68,10 +68,10 @@ def _pin_shared_only_with_deep_sleep(pin_num: int) -> bool:
    return any(path and path[0] == "deep_sleep" for path, _, _ in pin_users)


-def _final_validate(config):
+def _final_validate(config) -> None:
    use_interrupt = config[CONF_USE_INTERRUPT]
    if not use_interrupt:
-        return config
+        return

    # Expander pins (e.g. PCF8574, MCP23017) don't support direct interrupt
    # attachment — only internal/native GPIO pins do.
@@ -82,7 +82,7 @@ def _final_validate(config):
            config.get(CONF_NAME, config[CONF_ID]),
        )
        config[CONF_USE_INTERRUPT] = False
-        return config
+        return

    pin_num = config[CONF_PIN][CONF_NUMBER]

@@ -96,7 +96,7 @@ def _final_validate(config):
            config.get(CONF_NAME, config[CONF_ID]),
        )
        config[CONF_USE_INTERRUPT] = False
-        return config
+        return

    # When a pin is shared, interrupts can interfere with other components
    # (e.g., duty_cycle sensor) that need to monitor the pin's state changes.
@@ -120,8 +120,6 @@ def _final_validate(config):
                pin_num,
            )

-    return config
-

 FINAL_VALIDATE_SCHEMA = _final_validate

@@ -0,0 +1,22 @@
+from esphome import pins
+import esphome.config_validation as cv
+from esphome.const import CONF_ALLOW_OTHER_USES, CONF_INTERRUPT_PIN, CONF_INVERTED
+from esphome.types import ConfigType
+
+
+def validate_interrupt_pin(value: ConfigType) -> ConfigType:
+    # The expander components own INT polarity (active-low, hardcoded falling-edge ISR)
+    # and install a single ISR per GPIO, so neither inversion nor sharing is supported.
+    value = pins.internal_gpio_input_pin_schema(value)
+    if value.get(CONF_INVERTED):
+        raise cv.Invalid(
+            f"'{CONF_INVERTED}: true' is not supported on '{CONF_INTERRUPT_PIN}'; "
+            "the expander INT line is fixed active-low"
+        )
+    if value.get(CONF_ALLOW_OTHER_USES):
+        raise cv.Invalid(
+            f"'{CONF_ALLOW_OTHER_USES}: true' is not supported on '{CONF_INTERRUPT_PIN}'; "
+            "sharing the interrupt pin between multiple components is not implemented. "
+            f"Remove the '{CONF_INTERRUPT_PIN}' to fall back to polling."
+        )
+    return value
@@ -163,8 +163,8 @@ CONFIG_SCHEMA = (
 )


-def _final_validate(config: ConfigType) -> ConfigType:
-    return modbus.final_validate_modbus_device("growatt_solar", role="client")(config)
+def _final_validate(config: ConfigType) -> None:
+    modbus.final_validate_modbus_device("growatt_solar", role="client")(config)


 FINAL_VALIDATE_SCHEMA = _final_validate
@@ -424,7 +424,7 @@ async def power_action_to_code(config, action_id, template_arg, args):
    return cg.new_Pvariable(action_id, template_arg, paren)


-def _final_validate(config):
+def _final_validate(config) -> None:
    full_config = fv.full_config.get()
    if CONF_LOGGER in full_config:
        _level = "NONE"
@@ -448,7 +448,6 @@ def _final_validate(config):
        raise cv.Invalid(
            f"No WiFi configured, if you want to use haier climate without WiFi add {CONF_WIFI_SIGNAL}: false to climate configuration"
        )
-    return config


 FINAL_VALIDATE_SCHEMA = _final_validate
@@ -60,7 +60,7 @@ CONFIG_SCHEMA = cv.Schema(
 )


-def _final_validate(config):
+def _final_validate(config) -> None:
    full_config = fv.full_config.get()
    for switch_type in [CONF_BEEPER, CONF_QUIET_MODE]:
        # Check switches that are only supported for HonClimate
@@ -72,7 +72,6 @@ def _final_validate(config):
                raise cv.Invalid(
                    f"{switch_type} switch is only supported for hon climate"
                )
-    return config


 FINAL_VALIDATE_SCHEMA = _final_validate
@@ -217,8 +217,8 @@ CONFIG_SCHEMA = (
 )


-def _final_validate(config: ConfigType) -> ConfigType:
-    return modbus.final_validate_modbus_device("havells_solar", role="client")(config)
+def _final_validate(config: ConfigType) -> None:
+    modbus.final_validate_modbus_device("havells_solar", role="client")(config)


 FINAL_VALIDATE_SCHEMA = _final_validate
@@ -16,7 +16,7 @@

 namespace esphome::http_request {

-static const char *const TAG = "http_request.arduino";
+static const char *const TAG = "http_request";
 #ifdef USE_ESP8266
 // ESP8266 Arduino core (WiFiClientSecureBearSSL.cpp) returns -1000 on OOM
 static constexpr int ESP8266_SSL_ERR_OOM = -1000;
@@ -14,7 +14,7 @@

 namespace esphome::http_request {

-static const char *const TAG = "http_request.host";
+static const char *const TAG = "http_request";

 std::shared_ptr<HttpContainer> HttpRequestHost::perform(const std::string &url, const std::string &method,
                                                        const std::string &body,
@@ -16,7 +16,7 @@

 namespace esphome::http_request {

-static const char *const TAG = "http_request.idf";
+static const char *const TAG = "http_request";
 static constexpr uint32_t ERROR_DURATION_MS = 1000;

 void HttpRequestIDF::dump_config() {
@@ -315,7 +315,7 @@ def _validate_config(config: ConfigType) -> ConfigType:
    return config


-def _final_validate(config: ConfigType) -> ConfigType:
+def _final_validate(config: ConfigType) -> None:
    """Validate requirements when using HUB75 display."""
    # Local imports to avoid circular dependencies
    from esphome.components.esp32 import get_esp32_variant
@@ -381,8 +381,6 @@ def _final_validate(config: ConfigType) -> ConfigType:
    if errs:
        raise cv.MultipleInvalid(errs)

-    return config
-

 FINAL_VALIDATE_SCHEMA = cv.Schema(_final_validate)

@@ -9,7 +9,7 @@

 namespace esphome::i2c {

-static const char *const TAG = "i2c.arduino";
+static const char *const TAG = "i2c";

 // Maximum bytes to log in hex format (truncates larger transfers)
 static constexpr size_t I2C_MAX_LOG_BYTES = 32;
@@ -12,7 +12,7 @@

 namespace esphome::i2c {

-static const char *const TAG = "i2c.idf";
+static const char *const TAG = "i2c";

 // Maximum bytes to log in hex format (truncates larger transfers)
 static constexpr size_t I2C_MAX_LOG_BYTES = 32;
@@ -16,7 +16,7 @@

 namespace esphome::i2c {

-static const char *const TAG = "i2c.host";
+static const char *const TAG = "i2c";

 HostI2CBus::~HostI2CBus() {
  if (this->file_descriptor_ != -1) {
@@ -6,7 +6,7 @@

 namespace esphome::i2c {

-static const char *const TAG = "i2c.zephyr";
+static const char *const TAG = "i2c";

 static const char *get_speed(uint32_t dev_config) {
  switch (I2C_SPEED_GET(dev_config)) {
@@ -10,7 +10,14 @@ from PIL import Image, UnidentifiedImageError
 import esphome.codegen as cg
 from esphome.components.const import CONF_BYTE_ORDER, KEY_METADATA
 import esphome.config_validation as cv
-from esphome.const import CONF_DEFAULTS, CONF_FILE, CONF_ID, CONF_PLATFORM, CONF_TYPE
+from esphome.const import (
+    CONF_DEFAULTS,
+    CONF_FILE,
+    CONF_FILES,
+    CONF_ID,
+    CONF_PLATFORM,
+    CONF_TYPE,
+)
 from esphome.core import CORE
 from esphome.types import ConfigType

@@ -48,6 +55,9 @@ TRANSPARENCY_TYPES = (
    CONF_ALPHA_CHANNEL,
 )

+# Shared validator for the image platform schemas and `_drop_incompatible_byte_order`.
+validate_byte_order = cv.one_of("BIG_ENDIAN", "LITTLE_ENDIAN", upper=True)
+

 def get_image_type_enum(type):
    return getattr(ImageType, f"IMAGE_TYPE_{type.upper()}")
@@ -404,6 +414,120 @@ def get_image_metadata(image_id: str) -> ImageMetaData | None:
    return get_all_image_metadata().get(image_id)


+# ---------------------------------------------------------------------------
+# `defaults:`/`files:` expansion: a `platform:` entry merges shared `defaults:`
+# into every `files:` entry; the platform's CONFIG_SCHEMA validates each.
+# Permanent, unlike the legacy migration below.
+# ---------------------------------------------------------------------------
+
+
+def _drop_incompatible_byte_order(
+    merged: dict, explicit: dict, *, index: int | None = None
+) -> dict:
+    """Drop `byte_order` when the resolved type doesn't support it, unless written directly on `explicit`.
+
+    With `index`, inherited values are validated before being dropped (the legacy flattener always drops).
+    """
+    if CONF_BYTE_ORDER in explicit:
+        return merged
+    type_class = IMAGE_TYPE.get(str(merged.get(CONF_TYPE, "")).upper())
+    if (
+        CONF_BYTE_ORDER in merged
+        and isinstance(type_class, type)
+        and issubclass(type_class, ImageEncoder)
+        and not type_class.is_endian()
+    ):
+        if index is not None:
+            try:
+                validate_byte_order(merged[CONF_BYTE_ORDER])
+            except cv.Invalid as exc:
+                exc.prepend([index])
+                raise
+        del merged[CONF_BYTE_ORDER]
+    return merged
+
+
+def _expand_platform_entry(index: int, entry: dict) -> list[dict]:
+    if CONF_FILES not in entry:
+        if CONF_DEFAULTS in entry:
+            raise cv.Invalid(
+                f"'{CONF_DEFAULTS}' may only be used together with '{CONF_FILES}'",
+                path=[index],
+            )
+        return [entry]
+
+    extra_keys = set(entry) - {CONF_PLATFORM, CONF_DEFAULTS, CONF_FILES}
+    if extra_keys:
+        raise cv.Invalid(
+            f"'{CONF_FILES}' cannot be combined with "
+            f"{', '.join(sorted(extra_keys))} on the same entry",
+            path=[index],
+        )
+
+    files = entry[CONF_FILES]
+    if files is None:
+        raise cv.Invalid(f"'{CONF_FILES}' must not be empty", path=[index])
+    if not isinstance(files, list):
+        raise cv.Invalid(f"'{CONF_FILES}' must be a list", path=[index])
+    if not files:
+        raise cv.Invalid(f"'{CONF_FILES}' must not be empty", path=[index])
+
+    defaults = entry.get(CONF_DEFAULTS, {})
+    if defaults is None:
+        defaults = {}
+    if not isinstance(defaults, dict):
+        raise cv.Invalid(f"'{CONF_DEFAULTS}' must be a mapping", path=[index])
+    # Neither `id:` nor `platform:` makes sense inside `defaults:`.
+    for disallowed in (CONF_ID, CONF_PLATFORM):
+        if disallowed in defaults:
+            raise cv.Invalid(
+                f"'{disallowed}' is not allowed inside '{CONF_DEFAULTS}'",
+                path=[index],
+            )
+
+    from esphome import yaml_util
+
+    platform = entry[CONF_PLATFORM]
+    result: list[dict] = []
+    for file_entry in files:
+        if not isinstance(file_entry, dict):
+            raise cv.Invalid(
+                f"each entry in '{CONF_FILES}' must be a mapping", path=[index]
+            )
+        # The platform is chosen by the entry's own `platform:` key, not per file.
+        if CONF_PLATFORM in file_entry:
+            raise cv.Invalid(
+                f"'{CONF_PLATFORM}' is not allowed inside '{CONF_FILES}'",
+                path=[index],
+            )
+        # Keep the `files:` item's source range so whole-entry errors anchor there;
+        # `make_data_base` needs a real ESPHomeDataBase, so skip it for plain dicts.
+        source = (
+            file_entry if isinstance(file_entry, yaml_util.ESPHomeDataBase) else None
+        )
+        merged = yaml_util.make_data_base(
+            {CONF_PLATFORM: platform, **defaults, **file_entry}, source
+        )
+        result.append(_drop_incompatible_byte_order(merged, file_entry, index=index))
+    return result
+
+
+def expand_platform_config(config: list) -> list:
+    """Expand `defaults:`/`files:` entries; the platform's own CONFIG_SCHEMA validates each result."""
+    result = []
+    for i, entry in enumerate(config):
+        if isinstance(entry, dict) and CONF_PLATFORM in entry:
+            result.extend(_expand_platform_entry(i, entry))
+        else:
+            result.append(entry)
+    return result
+
+
+EXPAND_PLATFORM_CONFIG = expand_platform_config
+
+# --------------------- end defaults/files expansion -------------------------
+
+
 # ---------------------------------------------------------------------------
 # Legacy top-level component -> `image:` platform deprecation helpers
 # -- REMOVE after 2027.1.0 together with the `animation:`/`online_image:` shims.
@@ -496,11 +620,17 @@ def _is_legacy_image_format(config: object) -> bool:
    proper error instead of the migration silently dropping the input.
    """
    if isinstance(config, list):
-        # A bare list of (not-yet-platform-tagged) image dicts.
+        # Exclude `files:` entries -- the list branch would otherwise silently
+        # migrate them to `platform: file` instead of raising the missing-platform error.
        return bool(config) and all(
-            isinstance(entry, dict) and CONF_PLATFORM not in entry for entry in config
+            isinstance(entry, dict)
+            and CONF_PLATFORM not in entry
+            and CONF_FILES not in entry
+            for entry in config
        )
-    if not isinstance(config, dict):
+    if not isinstance(config, dict) or CONF_PLATFORM in config or CONF_FILES in config:
+        # `platform:`/`files:` dicts are new-format (left for list-wrapping +
+        # expansion); the legacy flattener has no `files:` branch and would drop them.
        return False
    # A single image dict, or the grouped `defaults:`/`images:`/type-key form.
    return (
@@ -532,18 +662,8 @@ def _flatten_legacy_image_config(config: object) -> list[dict]:

    def _add(entry: dict, extra: dict) -> None:
        merged = {**defaults, **extra, **entry}
-        # The legacy `defaults:`/type-grouped forms only applied `byte_order` to
-        # types that support it. Replicate that so an endian default merged into
-        # e.g. a binary image stays valid.
-        type_class = IMAGE_TYPE.get(str(merged.get(CONF_TYPE, "")).upper())
-        if (
-            CONF_BYTE_ORDER in merged
-            and isinstance(type_class, type)
-            and issubclass(type_class, ImageEncoder)
-            and not type_class.is_endian()
-        ):
-            del merged[CONF_BYTE_ORDER]
-        result.append(merged)
+        # Always drop, matching the pre-platform behavior -- see `_drop_incompatible_byte_order`.
+        result.append(_drop_incompatible_byte_order(merged, {}))

    def _add_entries(entries: object, extra: dict) -> None:
        # `entries` may be a single image dict or a list of them; non-dict
@@ -22,7 +22,7 @@ CONFIG_SCHEMA = (
 )


-def validate_logger(config):
+def validate_logger(config) -> None:
    logger_conf = fv.full_config.get()[CONF_LOGGER]
    if logger_conf[CONF_BAUD_RATE] == 0:
        raise cv.Invalid("improv_serial requires the logger baud_rate to be not 0")
@@ -33,7 +33,6 @@ def validate_logger(config):
        raise cv.Invalid(
            "improv_serial does not support the selected logger hardware_uart"
        )
-    return config


 FINAL_VALIDATE_SCHEMA = validate_logger
@@ -154,8 +154,12 @@ bool Infrared::on_receive(remote_base::RemoteReceiveData data) {
  // Forward received IR data to API server
 #if defined(USE_API) && defined(USE_IR_RF)
  if (api::global_api_server != nullptr) {
-    api::global_api_server->send_infrared_rf_receive_event(this->get_device_id_or_zero(), this->get_entity_key(),
-                                                           &data.get_raw_data());
+#ifdef USE_DEVICES
+    uint32_t device_id = this->get_device_id();
+#else
+    uint32_t device_id = 0;
+#endif
+    api::global_api_server->send_infrared_rf_receive_event(device_id, this->get_object_id_hash(), &data.get_raw_data());
  }
 #endif
  return false;  // Don't consume the event, allow other listeners to process it
@@ -146,13 +146,12 @@ CONFIG_SCHEMA = cv.All(
 )


-def _validate_cpu_frequency(config):
+def _validate_cpu_frequency(config) -> None:
    esp32_config = fv.full_config.get()[PLATFORM_ESP32]
    if esp32_config[CONF_CPU_FREQUENCY] != "240MHZ":
        raise cv.Invalid(
            "Inkplate requires 240MHz CPU frequency (set in esp32 component)"
        )
-    return config


 FINAL_VALIDATE_SCHEMA = _validate_cpu_frequency
@@ -9,7 +9,7 @@ uint32_t temp_single_get_current_temperature(uint32_t *temp_value);

 namespace esphome::internal_temperature {

-static const char *const TAG = "internal_temperature.bk72xx";
+static const char *const TAG = "internal_temperature";

 void InternalTemperatureSensor::update() {
  float temperature = NAN;
@@ -16,7 +16,7 @@ uint8_t temprature_sens_read();

 namespace esphome::internal_temperature {

-static const char *const TAG = "internal_temperature.esp32";
+static const char *const TAG = "internal_temperature";

 void InternalTemperatureSensor::update() {
  float temperature = NAN;
@@ -16,7 +16,7 @@

 namespace esphome::internal_temperature {

-static const char *const TAG = "internal_temperature.rp2";
+static const char *const TAG = "internal_temperature";

 // The on-die temperature sensor sits on the last ADC channel: input 4 on RP2040
 // and RP2350A, but input 8 on RP2350B, which has eight external channels rather
@@ -8,7 +8,7 @@

 namespace esphome::internal_temperature {

-static const char *const TAG = "internal_temperature.zephyr";
+static const char *const TAG = "internal_temperature";

 static const struct device *const DIE_TEMPERATURE_SENSOR = DEVICE_DT_GET_ONE(nordic_nrf_temp);

@@ -336,7 +336,7 @@ def _customise_schema(config):
 CONFIG_SCHEMA = _customise_schema


-def _final_validate(config):
+def _final_validate(config) -> None:
    # IT8951 reads from SPI (DevInfo, VCOM, register reads) so MISO is required.
    spi.final_validate_device_schema("it8951", require_miso=True, require_mosi=True)(
        config
@@ -351,7 +351,6 @@ def _final_validate(config):
                config[CONF_UPDATE_INTERVAL] = update_interval("never")
        else:
            config[CONF_SHOW_TEST_CARD] = True
-    return config


 FINAL_VALIDATE_SCHEMA = _final_validate
@@ -89,8 +89,8 @@ CONFIG_SCHEMA = (
 )


-def _final_validate(config: ConfigType) -> ConfigType:
-    return modbus.final_validate_modbus_device("kuntze", role="client")(config)
+def _final_validate(config: ConfigType) -> None:
+    modbus.final_validate_modbus_device("kuntze", role="client")(config)


 FINAL_VALIDATE_SCHEMA = _final_validate
@@ -184,8 +184,6 @@ static int32_t get_firmware_int(const char *version_string) {
  return result;
 }

-float LD2420Component::get_setup_priority() const { return setup_priority::BUS; }
-
 void LD2420Component::dump_config() {
  ESP_LOGCONFIG(TAG,
                "LD2420:\n"
@@ -746,7 +744,14 @@ void LD2420Component::set_reg_value(uint16_t reg, uint16_t value) {
  this->send_cmd_from_array(cmd_frame);
 }

-void LD2420Component::handle_cmd_error(uint8_t error) { ESP_LOGE(TAG, "Command failed: %s", ERR_MESSAGE[error]); }
+void LD2420Component::handle_cmd_error(uint16_t error) {
+  if (error < std::size(ERR_MESSAGE)) {
+    ESP_LOGE(TAG, "Command failed: %s", ERR_MESSAGE[error]);
+  } else {
+    // The error word comes from the device reply frame; unknown codes must not index ERR_MESSAGE
+    ESP_LOGE(TAG, "Command failed: error 0x%04X", error);
+  }
+}

 int LD2420Component::get_gate_threshold_(uint8_t gate) {
  uint8_t error;
@@ -105,10 +105,9 @@ class LD2420Component final : public Component, public uart::UARTDevice {
  void apply_config_action();
  void factory_reset_action();
  void revert_config_action();
-  float get_setup_priority() const override;
  int send_cmd_from_array(CmdFrameT cmd_frame);
  void report_gate_data();
-  void handle_cmd_error(uint8_t error);
+  void handle_cmd_error(uint16_t error);
  void set_operating_mode(const char *state);
  void auto_calibrate_sensitivity();
  void update_radar_data(uint16_t const *gate_energy, uint8_t sample_number);
@@ -84,7 +84,7 @@ CONFIG_SCHEMA = cv.Schema(
 )


-def final_validate(config: ConfigType) -> ConfigType:
+def final_validate(config: ConfigType) -> None:
    full_config = fv.full_config.get()
    hub_id = config[CONF_LD6002B_ID]

@@ -108,8 +108,6 @@ def final_validate(config: ConfigType) -> ConfigType:
                path=[CONF_WAKE],
            )

-    return config
-

 FINAL_VALIDATE_SCHEMA = final_validate

@@ -105,9 +105,9 @@ CONFIG_SCHEMA = cv.Schema(
 )


-def final_validate(config: ConfigType) -> ConfigType:
+def final_validate(config: ConfigType) -> None:
    if config.get(CONF_AREA_CONFIG) is None:
-        return config
+        return

    full_config = fv.full_config.get()
    hub_id = config[CONF_LD6002B_ID]
@@ -132,8 +132,6 @@ def final_validate(config: ConfigType) -> ConfigType:
            path=[CONF_AREA_CONFIG],
        )

-    return config
-

 FINAL_VALIDATE_SCHEMA = final_validate

@@ -182,6 +182,9 @@ def get_download_types(storage_json: StorageJSON = None):
    the shape stable so the download panel
    doesn't have to special-case per-platform schemas.
    """
+    # No recorded firmware path means nothing was built; no downloads.
+    if storage_json.firmware_bin_path is None:
+        return []
    types = [
        {
            "title": "UF2 package (recommended)",
@@ -1,9 +1,12 @@
+from collections.abc import Callable
 from dataclasses import dataclass, field
 import enum
+import logging

 import esphome.automation as auto
 import esphome.codegen as cg
 from esphome.components import mqtt, power_supply, web_server
+from esphome.components.const import CONF_CHANNEL_COLORS, CONF_IS_WRGB
 import esphome.config_validation as cv
 from esphome.const import (
    CONF_BLUE,
@@ -23,6 +26,7 @@ from esphome.const import (
    CONF_ICON,
    CONF_ID,
    CONF_INITIAL_STATE,
+    CONF_IS_RGBW,
    CONF_MQTT_ID,
    CONF_NAME,
    CONF_ON_STATE,
@@ -32,6 +36,7 @@ from esphome.const import (
    CONF_POWER_SUPPLY,
    CONF_RED,
    CONF_RESTORE_MODE,
+    CONF_RGB_ORDER,
    CONF_STATE,
    CONF_TRIGGER_ID,
    CONF_WARM_WHITE,
@@ -61,6 +66,7 @@ from .effects import (
 from .types import (  # noqa: F401
    AddressableLight,
    AddressableLightState,
+    ChannelColors,
    ColorMode,
    LightOutput,
    LightState,
@@ -71,6 +77,8 @@ from .types import (  # noqa: F401
    light_ns,
 )

+_LOGGER = logging.getLogger(__name__)
+
 CODEOWNERS = ["@esphome/core"]
 IS_PLATFORM_COMPONENT = True

@@ -165,7 +173,105 @@ def available_effects_str(effects: list) -> str:
    return ", ".join(f"'{name}'" for name in available) if available else "none"


-def _final_validate(config: ConfigType) -> ConfigType:
+# Accepted values of the deprecated `rgb_order` key.
+RGB_ORDERS = ("RGB", "RBG", "GRB", "GBR", "BGR", "BRG")
+
+_RGB_CHANNELS = frozenset("RGB")
+_RGBW_CHANNELS = frozenset("RGBW")
+
+
+def validate_channel_colors(value: str) -> str:
+    """Validate the channel order of an addressable strip, e.g. "GRB" or "WRGB"."""
+    value = cv.string_strict(value).upper()
+    channels = frozenset(value)
+    if len(channels) != len(value) or channels not in (_RGB_CHANNELS, _RGBW_CHANNELS):
+        raise cv.Invalid(
+            f"'{value}' is not a valid channel order. List each of R, G and B exactly "
+            "once, optionally with a single W, in the order the strip expects them "
+            "(for example GRB, GRBW or WRGB)"
+        )
+    return value
+
+
+def channel_colors_struct(value: str) -> cg.StructInitializer:
+    """Build the C++ `light::ChannelColors` for a validated channel order string."""
+    return cg.StructInitializer(
+        ChannelColors,
+        ("r", value.index("R")),
+        ("g", value.index("G")),
+        ("b", value.index("B")),
+        (
+            "w",
+            value.index("W")
+            if "W" in value
+            else cg.RawExpression(f"{ChannelColors}::NO_WHITE"),
+        ),
+    )
+
+
+def _quote_and_join(keys: list[str]) -> str:
+    """Quote each key and join them into a readable list, e.g. "'a', 'b' and 'c'"."""
+    quoted = [f"'{key}'" for key in keys]
+    if len(quoted) == 1:
+        return quoted[0]
+    return f"{', '.join(quoted[:-1])} and {quoted[-1]}"
+
+
+def migrate_channel_colors(
+    *, removed_in: str, component: str
+) -> Callable[[ConfigType], ConfigType]:
+    """Fold the deprecated `rgb_order`, `is_rgbw` and `is_wrgb` keys into `channel_colors`.
+
+    This also enforces that `channel_colors` is set, which the schema cannot do on its
+    own while the deprecated keys are still accepted. After this runs, `to_code` only
+    ever sees `channel_colors`.
+    """
+
+    def validator(config: ConfigType) -> ConfigType:
+        config = config.copy()
+        deprecated = [
+            key for key in (CONF_RGB_ORDER, CONF_IS_RGBW, CONF_IS_WRGB) if key in config
+        ]
+        if CONF_CHANNEL_COLORS in config:
+            if deprecated:
+                raise cv.Invalid(
+                    f"'{CONF_CHANNEL_COLORS}' cannot be combined with "
+                    f"{_quote_and_join(deprecated)}"
+                )
+            return config
+        if CONF_RGB_ORDER not in config:
+            raise cv.Invalid(
+                f"'{CONF_CHANNEL_COLORS}' is required", path=[CONF_CHANNEL_COLORS]
+            )
+        rgb_order = config.pop(CONF_RGB_ORDER)
+        is_rgbw = config.pop(CONF_IS_RGBW, False)
+        is_wrgb = config.pop(CONF_IS_WRGB, False)
+        if is_rgbw and is_wrgb:
+            raise cv.Invalid(
+                f"'{CONF_IS_RGBW}' and '{CONF_IS_WRGB}' cannot both be enabled"
+            )
+        if is_wrgb:
+            channel_colors = f"W{rgb_order}"
+        elif is_rgbw:
+            channel_colors = f"{rgb_order}W"
+        else:
+            channel_colors = rgb_order
+        _LOGGER.warning(
+            "[%s] %s %s deprecated, use '%s: %s'. Will be removed in %s",
+            component,
+            _quote_and_join(deprecated),
+            "are" if len(deprecated) > 1 else "is",
+            CONF_CHANNEL_COLORS,
+            channel_colors,
+            removed_in,
+        )
+        config[CONF_CHANNEL_COLORS] = channel_colors
+        return config
+
+    return validator
+
+
+def _final_validate(config: ConfigType) -> None:
    """Validate all recorded effect name references against their target lights.

    This runs once per light platform instance. If no light platform is configured,
@@ -173,7 +279,7 @@ def _final_validate(config: ConfigType) -> ConfigType:
    """
    data = _get_data()
    if not data.effect_refs and not data.effect_cycle_refs:
-        return config
+        return

    # Drain the lists so we only validate once even though
    # FINAL_VALIDATE_SCHEMA runs for each light platform instance.
@@ -217,8 +323,6 @@ def _final_validate(config: ConfigType) -> ConfigType:
                path=[cv.ROOT_CONFIG_PATH] + ref.component_path,
            )

-    return config
-

 FINAL_VALIDATE_SCHEMA = _final_validate

@@ -0,0 +1,41 @@
+#pragma once
+
+#include <cstdint>
+
+namespace esphome::light {
+
+/// Which byte of an addressable LED's data carries each colour.
+///
+/// Built from a configuration string such as "GRB" or "WRGB": every field holds the
+/// position that colour occupies in the bytes the strip expects. `w` is NO_WHITE when
+/// the strip has no separate white channel.
+struct ChannelColors {
+  /// Value of `w` for a strip that only has red, green and blue channels.
+  static constexpr uint8_t NO_WHITE = 0xFF;
+
+  uint8_t r;
+  uint8_t g;
+  uint8_t b;
+  uint8_t w;
+
+  bool has_white() const { return this->w != NO_WHITE; }
+
+  uint8_t bytes_per_led() const { return this->has_white() ? 4 : 3; }
+
+  /// Write the order back out as text, e.g. "GRBW".
+  ///
+  /// `buf` must have room for at least 5 characters. Returns `buf` so the result can be
+  /// passed straight to a log call.
+  const char *to_string(char *buf) const {
+    buf[this->r] = 'R';
+    buf[this->g] = 'G';
+    buf[this->b] = 'B';
+    if (this->has_white()) {
+      buf[this->w] = 'W';
+    }
+    buf[this->bytes_per_led()] = '\0';
+    return buf;
+  }
+};
+
+}  // namespace esphome::light
@@ -16,6 +16,9 @@ LightColorValues = light_ns.class_("LightColorValues")
 LightStateRTCState = light_ns.struct("LightStateRTCState")
 LightCall = light_ns.class_("LightCall")

+# Addressable strips
+ChannelColors = light_ns.struct("ChannelColors")
+
 # Color modes
 ColorMode = light_ns.enum("ColorMode", is_class=True)
 COLOR_MODES = {
@@ -444,7 +444,7 @@ LVTouchListener::LVTouchListener(uint16_t long_press_time, uint16_t long_press_r
  lv_indev_set_type(this->drv_, LV_INDEV_TYPE_POINTER);
  lv_indev_set_disp(this->drv_, parent->get_disp());
  lv_indev_set_long_press_time(this->drv_, long_press_time);
-  // long press repeat time TBD
+  lv_indev_set_long_press_repeat_time(this->drv_, long_press_repeat_time);
  lv_indev_set_user_data(this->drv_, this);
  lv_indev_set_read_cb(this->drv_, [](lv_indev_t *d, lv_indev_data_t *data) {
    auto *l = static_cast<LVTouchListener *>(lv_indev_get_user_data(d));
@@ -1,3 +1,4 @@
+from esphome.components.const import CONF_LABEL
 import esphome.config_validation as cv
 from esphome.const import CONF_TEXT

@@ -14,8 +15,6 @@ from ..schemas import TEXT_SCHEMA
 from ..types import LvText
 from . import Widget, WidgetType

-CONF_LABEL = "label"
-

 class LabelType(WidgetType):
    def __init__(self):
@@ -1,6 +1,6 @@
 from esphome import pins
 import esphome.codegen as cg
-from esphome.components import i2c
+from esphome.components import gpio_expander, i2c
 import esphome.config_validation as cv
 from esphome.const import (
    CONF_ID,
@@ -25,7 +25,7 @@ CONFIG_SCHEMA = (
    cv.Schema(
        {
            cv.Required(CONF_ID): cv.declare_id(MCP23016),
-            cv.Optional(CONF_INTERRUPT_PIN): pins.internal_gpio_input_pin_schema,
+            cv.Optional(CONF_INTERRUPT_PIN): gpio_expander.validate_interrupt_pin,
        }
    )
    .extend(cv.COMPONENT_SCHEMA)
@@ -1,8 +1,8 @@
 from esphome import pins
 import esphome.codegen as cg
+from esphome.components import gpio_expander
 import esphome.config_validation as cv
 from esphome.const import (
-    CONF_ALLOW_OTHER_USES,
    CONF_ID,
    CONF_INPUT,
    CONF_INTERRUPT,
@@ -32,28 +32,10 @@ MCP23XXX_INTERRUPT_MODES = {
 }


-def _validate_interrupt_pin(value):
-    # The MCP component owns INT polarity (active-low, hardcoded falling-edge ISR)
-    # and installs a single ISR per GPIO, so neither inversion nor sharing is supported.
-    value = pins.internal_gpio_input_pin_schema(value)
-    if value.get(CONF_INVERTED):
-        raise cv.Invalid(
-            f"'{CONF_INVERTED}: true' is not supported on '{CONF_INTERRUPT_PIN}'; "
-            "the MCP23xxx INT line is fixed active-low"
-        )
-    if value.get(CONF_ALLOW_OTHER_USES):
-        raise cv.Invalid(
-            f"'{CONF_ALLOW_OTHER_USES}: true' is not supported on '{CONF_INTERRUPT_PIN}'; "
-            "sharing the interrupt pin between multiple MCP23xxx (or other components) "
-            "is not implemented. Remove the interrupt_pin to fall back to polling."
-        )
-    return value
-
-
 MCP23XXX_CONFIG_SCHEMA = cv.Schema(
    {
        cv.Optional(CONF_OPEN_DRAIN_INTERRUPT, default=False): cv.boolean,
-        cv.Optional(CONF_INTERRUPT_PIN): _validate_interrupt_pin,
+        cv.Optional(CONF_INTERRUPT_PIN): gpio_expander.validate_interrupt_pin,
    }
 ).extend(cv.COMPONENT_SCHEMA)

@@ -34,7 +34,7 @@ CONF_NONVOLATILE_WRITE_DELAY = "nonvolatile_write_delay"
 VOLATILE_CHANNELS = ("A", "B", "C", "D")


-def _validate_nonvolatile(config):
+def _validate_nonvolatile(config) -> None:
    channel = str(config[CONF_CHANNEL])

    # Channels E-H address the nonvolatile registers directly — the mirroring options only
@@ -49,7 +49,7 @@ def _validate_nonvolatile(config):
                f"enabling '{CONF_NONVOLATILE}' or setting '{CONF_NONVOLATILE_WRITE_DELAY}' is only valid for the "
                f"volatile channels A-D; channels E-H are the nonvolatile registers themselves"
            )
-        return config
+        return

    config.setdefault(CONF_NONVOLATILE, True)
    if config[CONF_NONVOLATILE]:
@@ -62,7 +62,6 @@ def _validate_nonvolatile(config):
        raise cv.Invalid(
            f"'{CONF_NONVOLATILE_WRITE_DELAY}' requires '{CONF_NONVOLATILE}: true'"
        )
-    return config


 CONFIG_SCHEMA = output.FLOAT_OUTPUT_SCHEMA.extend(
@@ -62,7 +62,7 @@ def _consume_mdns_sockets(config: ConfigType) -> ConfigType:
    return config


-def _require_network_interface(config: ConfigType) -> ConfigType:
+def _require_network_interface(config: ConfigType) -> None:
    """Require a network interface for mDNS on Arduino/LEAmDNS platforms.

    On ESP8266 and RP2040 the C++ implementation needs at least one IP state
@@ -71,7 +71,7 @@ def _require_network_interface(config: ConfigType) -> ConfigType:
    that never initializes.
    """
    if config.get(CONF_DISABLED) or not (CORE.is_esp8266 or CORE.is_rp2):
-        return config
+        return
    full_config = fv.full_config.get()
    has_wifi = "wifi" in full_config
    has_ethernet = CORE.is_rp2 and "ethernet" in full_config
@@ -81,7 +81,6 @@ def _require_network_interface(config: ConfigType) -> ConfigType:
            "mdns on this platform requires a network interface — "
            f"add a {options} component to your configuration."
        )
-    return config


 CONFIG_SCHEMA = cv.All(
@@ -175,7 +175,7 @@ def _config_schema(config):
    return config


-def _final_validate(config):
+def _final_validate(config) -> None:
    global_config = full_config.get()

    from esphome.components.lvgl import DOMAIN as LVGL_DOMAIN
@@ -183,7 +183,6 @@ def _final_validate(config):
    if not requires_buffer(config) and LVGL_DOMAIN not in global_config:
        # If no drawing methods are configured, and LVGL is not enabled, show a test card
        config[CONF_SHOW_TEST_CARD] = True
-    return config


 CONFIG_SCHEMA = _config_schema
@@ -248,7 +248,7 @@ def _config_schema(config):
 CONFIG_SCHEMA = _config_schema


-def _final_validate(config):
+def _final_validate(config) -> None:
    global_config = full_config.get()

    from esphome.components.lvgl import DOMAIN as LVGL_DOMAIN
@@ -260,7 +260,6 @@ def _final_validate(config):
        config = spi.final_validate_device_schema(
            "mipi_rgb", require_miso=False, require_mosi=True
        )(config)
-    return config


 FINAL_VALIDATE_SCHEMA = _final_validate
@@ -143,11 +143,11 @@ def CONFIG_SCHEMA(config: ConfigType) -> ConfigType:


 # Legacy climate-owned hub compatibility. Remove in 2027.2.0.
-def _legacy_final_validate(config: ConfigType) -> ConfigType:
+def _legacy_final_validate(config: ConfigType) -> None:
    if CONF_MITSUBISHI_CN105_ID in config:
-        return config
+        return

-    return uart.final_validate_device_schema(
+    uart.final_validate_device_schema(
        DOMAIN,
        require_rx=True,
        require_tx=True,
@@ -219,14 +219,25 @@ void ModbusServerHub::parse_modbus_frames() {
    this->clear_rx_buffer_(LOG_STR("timeout after partial response"), true);
 }

-uint16_t Modbus::find_custom_frame_end_(uint16_t min_length) const {
-  // Custom functions could be any length - we have to rely on the CRC to determine completeness.
+uint16_t Modbus::find_frame_end_by_crc_(uint16_t min_length) const {
+  // Unknown-length functions (user-defined codes, unimplemented management codes, unassigned values)
+  // could be any length - we have to rely on the CRC to determine completeness.
  // If a CRC match is never found, the buffer will eventually overflow and be cleared.
  const uint8_t *raw = &this->rx_buffer_[0];
  const size_t size = this->rx_buffer_.size();
-  for (uint16_t len = min_length; len <= std::min(size, size_t(MAX_FRAME_SIZE)); len++) {
-    if (crc16(raw, len) == 0)
-      return len;
+  const auto max_len = static_cast<uint16_t>(std::min(size, size_t(MAX_FRAME_SIZE)));
+  if (min_length > max_len)
+    return 0;
+  // The Modbus CRC (poly 0xa001, refin/refout false) keeps its running state in the returned value,
+  // so we seed once over the first min_length bytes and extend one byte at a time instead of
+  // recomputing the whole prefix for every candidate length.
+  uint16_t crc = crc16(raw, min_length);
+  if (crc == 0)
+    return min_length;
+  for (uint16_t len = min_length; len < max_len; len++) {
+    crc = crc16(&raw[len], 1, crc);
+    if (crc == 0)
+      return len + 1;
  }
  return 0;
 }
@@ -241,11 +252,11 @@ bool Modbus::parse_modbus_server_frame_() {
  uint8_t address = this->rx_buffer_[0];
  uint8_t function_code = this->rx_buffer_[1];

-  if (helpers::is_function_code_custom(function_code)) {
-    frame_length = this->find_custom_frame_end_(frame_length);
+  if (helpers::is_function_code_unknown_length(function_code)) {
+    frame_length = this->find_frame_end_by_crc_(frame_length);
    if (frame_length == 0)
      return size < MAX_FRAME_SIZE;  // Continue to parse until we hit max size
-    ESP_LOGD(TAG, "User-defined function %02X found", function_code);
+    ESP_LOGD(TAG, "Unknown-length function %02X found", function_code);
  } else {
    if (crc16(&this->rx_buffer_[0], frame_length) != 0)
      return false;
@@ -272,11 +283,11 @@ bool ModbusServerHub::parse_modbus_client_frame_() {
  uint8_t address = this->rx_buffer_[0];
  uint8_t function_code = this->rx_buffer_[1];

-  if (helpers::is_function_code_custom(function_code)) {
-    frame_length = this->find_custom_frame_end_(frame_length);
+  if (helpers::is_function_code_unknown_length(function_code)) {
+    frame_length = this->find_frame_end_by_crc_(frame_length);
    if (frame_length == 0)
      return size < MAX_FRAME_SIZE;  // Continue to parse until we hit max size
-    ESP_LOGD(TAG, "User-defined function %02X found", function_code);
+    ESP_LOGD(TAG, "Unknown-length function %02X found", function_code);
  } else {
    if (crc16(&this->rx_buffer_[0], frame_length) != 0)
      return false;
@@ -82,7 +82,7 @@ class Modbus : public uart::UARTDevice, public Component {
  bool send_frame_(const ModbusFrame &frame);
  // Scans forward from min_length to find a frame boundary by CRC match for custom function codes.
  // Returns the matched frame length, or 0 if no valid CRC was found within MAX_FRAME_SIZE.
-  uint16_t find_custom_frame_end_(uint16_t min_length) const;
+  uint16_t find_frame_end_by_crc_(uint16_t min_length) const;

  uint32_t last_modbus_byte_{0};
  uint32_t last_receive_check_{0};
--- a/Show More
+++ b/Show More