diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 965e23870d..ab7a750388 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -154,7 +154,7 @@ jobs:
           . venv/bin/activate
           pytest -vv --cov-report=xml --tb=native -n auto tests --ignore=tests/integration/
       - name: Upload coverage to Codecov
-        uses: codecov/codecov-action@1af58845a975a7985b0beb0cbe6fbbb71a41dbad # v5.5.3
+        uses: codecov/codecov-action@57e3a136b779b570ffcdbf80b3bdc90e7fab3de2 # v6.0.0
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
       - name: Save Python virtual environment cache
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 5e2bfe09ce..f4729f211c 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -11,7 +11,7 @@ ci:
 repos:
   - repo: https://github.com/astral-sh/ruff-pre-commit
     # Ruff version.
-    rev: v0.15.6
+    rev: v0.15.8
     hooks:
       # Run the linter.
       - id: ruff
diff --git a/CODEOWNERS b/CODEOWNERS
index afe4cdb871..8d297d7b07 100644
--- a/CODEOWNERS
+++ b/CODEOWNERS
@@ -92,6 +92,7 @@ esphome/components/bmp3xx_i2c/* @latonita
 esphome/components/bmp3xx_spi/* @latonita
 esphome/components/bmp581_base/* @danielkent-net @kahrendt
 esphome/components/bmp581_i2c/* @danielkent-net @kahrendt
+esphome/components/bmp581_spi/* @danielkent-net @kahrendt
 esphome/components/bp1658cj/* @Cossid
 esphome/components/bp5758d/* @Cossid
 esphome/components/bthome_mithermometer/* @nagyrobi
diff --git a/esphome/automation.py b/esphome/automation.py
index 17966dc782..7b1d6ceca1 100644
--- a/esphome/automation.py
+++ b/esphome/automation.py
@@ -137,6 +137,9 @@ UpdateComponentAction = cg.esphome_ns.class_("UpdateComponentAction", Action)
 SuspendComponentAction = cg.esphome_ns.class_("SuspendComponentAction", Action)
 ResumeComponentAction = cg.esphome_ns.class_("ResumeComponentAction", Action)
 Automation = cg.esphome_ns.class_("Automation")
+TriggerForwarder = cg.esphome_ns.class_("TriggerForwarder")
+TriggerOnTrueForwarder = cg.esphome_ns.class_("TriggerOnTrueForwarder")
+TriggerOnFalseForwarder = cg.esphome_ns.class_("TriggerOnFalseForwarder")
 
 LambdaCondition = cg.esphome_ns.class_("LambdaCondition", Condition)
 StatelessLambdaCondition = cg.esphome_ns.class_("StatelessLambdaCondition", Condition)
@@ -661,3 +664,44 @@ async def build_automation(
     actions = await build_action_list(config[CONF_THEN], templ, args)
     cg.add(obj.add_actions(actions))
     return obj
+
+
+async def build_callback_automation(
+    parent: MockObj,
+    callback_method: str,
+    args: TemplateArgsType,
+    config: ConfigType,
+    forwarder: MockObj | MockObjClass | None = None,
+) -> None:
+    """Build an Automation and register it as a callback on the parent.
+
+    Eliminates the need for a Trigger wrapper object by registering the
+    automation's trigger() directly as a callback on the parent component.
+
+    Uses template forwarder structs so the compiler deduplicates the operator()
+    body across all call sites with the same signature. The forwarder must be
+    pointer-sized (single Automation* field) to fit inline in Callback::ctx_
+    and avoid heap allocation.
+
+    :param parent: The component object (e.g., button, sensor).
+    :param callback_method: Name of the callback method (e.g., "add_on_press_callback").
+    :param args: Automation template args as list of (type, name) tuples.
+    :param config: The automation config dict.
+    :param forwarder: Optional forwarder type to use instead of the default
+        TriggerForwarder<Ts...>. Pass any struct type whose aggregate init takes
+        a single Automation pointer (e.g., TriggerOnTrueForwarder).
+    """
+    arg_types = [arg[0] for arg in args]
+    templ = cg.TemplateArguments(*arg_types)
+    obj = cg.new_Pvariable(config[CONF_AUTOMATION_ID], templ)
+    actions = await build_action_list(config[CONF_THEN], templ, args)
+    cg.add(obj.add_actions(actions))
+    # Use template forwarder structs for deduplication. The compiler generates
+    # one operator() per forwarder type; different automation pointers are just
+    # data in the struct.
+    if forwarder is None:
+        forwarder = TriggerForwarder.template(templ)
+    # RawExpression for aggregate init — both forwarder and obj are codegen
+    # MockObjs (not user input), and there's no Expression type for positional
+    # aggregate initialization (StructInitializer uses named fields).
+    cg.add(getattr(parent, callback_method)(cg.RawExpression(f"{forwarder}{{{obj}}}")))
diff --git a/esphome/components/binary_sensor/__init__.py b/esphome/components/binary_sensor/__init__.py
index 37cccc01be..4705f1675d 100644
--- a/esphome/components/binary_sensor/__init__.py
+++ b/esphome/components/binary_sensor/__init__.py
@@ -120,10 +120,6 @@ BinarySensorInitiallyOff = binary_sensor_ns.class_(
 BinarySensorPtr = BinarySensor.operator("ptr")
 
 # Triggers
-PressTrigger = binary_sensor_ns.class_("PressTrigger", automation.Trigger.template())
-ReleaseTrigger = binary_sensor_ns.class_(
-    "ReleaseTrigger", automation.Trigger.template()
-)
 ClickTrigger = binary_sensor_ns.class_("ClickTrigger", automation.Trigger.template())
 DoubleClickTrigger = binary_sensor_ns.class_(
     "DoubleClickTrigger", automation.Trigger.template()
@@ -132,13 +128,6 @@ MultiClickTrigger = binary_sensor_ns.class_(
     "MultiClickTrigger", automation.Trigger.template(), cg.Component
 )
 MultiClickTriggerEvent = binary_sensor_ns.struct("MultiClickTriggerEvent")
-StateTrigger = binary_sensor_ns.class_(
-    "StateTrigger", automation.Trigger.template(bool)
-)
-StateChangeTrigger = binary_sensor_ns.class_(
-    "StateChangeTrigger",
-    automation.Trigger.template(cg.optional.template(bool), cg.optional.template(bool)),
-)
 
 BinarySensorPublishAction = binary_sensor_ns.class_(
     "BinarySensorPublishAction", automation.Action
@@ -458,16 +447,8 @@ _BINARY_SENSOR_SCHEMA = (
             ): cv.boolean,
             cv.Optional(CONF_DEVICE_CLASS): validate_device_class,
             cv.Optional(CONF_FILTERS): validate_filters,
-            cv.Optional(CONF_ON_PRESS): automation.validate_automation(
-                {
-                    cv.GenerateID(CONF_TRIGGER_ID): cv.declare_id(PressTrigger),
-                }
-            ),
-            cv.Optional(CONF_ON_RELEASE): automation.validate_automation(
-                {
-                    cv.GenerateID(CONF_TRIGGER_ID): cv.declare_id(ReleaseTrigger),
-                }
-            ),
+            cv.Optional(CONF_ON_PRESS): automation.validate_automation({}),
+            cv.Optional(CONF_ON_RELEASE): automation.validate_automation({}),
             cv.Optional(CONF_ON_CLICK): cv.All(
                 automation.validate_automation(
                     {
@@ -509,16 +490,8 @@ _BINARY_SENSOR_SCHEMA = (
                     ): cv.positive_time_period_milliseconds,
                 }
             ),
-            cv.Optional(CONF_ON_STATE): automation.validate_automation(
-                {
-                    cv.GenerateID(CONF_TRIGGER_ID): cv.declare_id(StateTrigger),
-                }
-            ),
-            cv.Optional(CONF_ON_STATE_CHANGE): automation.validate_automation(
-                {
-                    cv.GenerateID(CONF_TRIGGER_ID): cv.declare_id(StateChangeTrigger),
-                }
-            ),
+            cv.Optional(CONF_ON_STATE): automation.validate_automation({}),
+            cv.Optional(CONF_ON_STATE_CHANGE): automation.validate_automation({}),
         }
     )
 )
@@ -556,13 +529,14 @@ def binary_sensor_schema(
 
 @coroutine_with_priority(CoroPriority.AUTOMATION)
 async def _build_binary_sensor_automations(var, config):
-    for conf in config.get(CONF_ON_PRESS, []):
-        trigger = cg.new_Pvariable(conf[CONF_TRIGGER_ID], var)
-        await automation.build_automation(trigger, [], conf)
-
-    for conf in config.get(CONF_ON_RELEASE, []):
-        trigger = cg.new_Pvariable(conf[CONF_TRIGGER_ID], var)
-        await automation.build_automation(trigger, [], conf)
+    for conf_key, forwarder in (
+        (CONF_ON_PRESS, automation.TriggerOnTrueForwarder),
+        (CONF_ON_RELEASE, automation.TriggerOnFalseForwarder),
+    ):
+        for conf in config.get(conf_key, []):
+            await automation.build_callback_automation(
+                var, "add_on_state_callback", [], conf, forwarder=forwarder
+            )
 
     for conf in config.get(CONF_ON_CLICK, []):
         trigger = cg.new_Pvariable(
@@ -593,13 +567,14 @@ async def _build_binary_sensor_automations(var, config):
         await automation.build_automation(trigger, [], conf)
 
     for conf in config.get(CONF_ON_STATE, []):
-        trigger = cg.new_Pvariable(conf[CONF_TRIGGER_ID], var)
-        await automation.build_automation(trigger, [(bool, "x")], conf)
+        await automation.build_callback_automation(
+            var, "add_on_state_callback", [(bool, "x")], conf
+        )
 
     for conf in config.get(CONF_ON_STATE_CHANGE, []):
-        trigger = cg.new_Pvariable(conf[CONF_TRIGGER_ID], var)
-        await automation.build_automation(
-            trigger,
+        await automation.build_callback_automation(
+            var,
+            "add_full_state_callback",
             [
                 (cg.optional.template(bool), "x_previous"),
                 (cg.optional.template(bool), "x"),
diff --git a/esphome/components/bmp581_base/bmp581_base.cpp b/esphome/components/bmp581_base/bmp581_base.cpp
index 89a92de31d..c9d250545b 100644
--- a/esphome/components/bmp581_base/bmp581_base.cpp
+++ b/esphome/components/bmp581_base/bmp581_base.cpp
@@ -469,14 +469,18 @@ bool BMP581Component::read_temperature_and_pressure_(float &temperature, float &
 }
 
 bool BMP581Component::reset_() {
+  // - activates interface (only relevant for SPI mode)
   // - writes reset command to the command register
   // - waits for sensor to complete reset
+  // - activates interface (only relevant for SPI mode)
   // - returns the Power-On-Reboot interrupt status, which is asserted if successful
 
+  // activates communication interface (SPI only)
+  this->activate_interface();
+
   // writes reset command to BMP's command register
   if (!this->bmp_write_byte(BMP581_COMMAND, RESET_COMMAND)) {
     ESP_LOGE(TAG, "Failed to write reset command");
-
     return false;
   }
 
@@ -484,6 +488,9 @@ bool BMP581Component::reset_() {
   //  - round up to 3 ms
   delay(3);
 
+  // reactivates communication interface after reset (SPI only)
+  this->activate_interface();
+
   // read interrupt status register
   if (!this->bmp_read_byte(BMP581_INT_STATUS, &this->int_status_.reg)) {
     ESP_LOGE(TAG, "Failed to read interrupt status register");
@@ -491,7 +498,7 @@ bool BMP581Component::reset_() {
     return false;
   }
 
-  // Power-On-Reboot bit is asserted if sensor successfully reset
+  // power-On-Reboot bit is asserted if sensor successfully reset
   return this->int_status_.bit.por;
 }
 
diff --git a/esphome/components/bmp581_base/bmp581_base.h b/esphome/components/bmp581_base/bmp581_base.h
index d99c420272..c3920512e0 100644
--- a/esphome/components/bmp581_base/bmp581_base.h
+++ b/esphome/components/bmp581_base/bmp581_base.h
@@ -87,6 +87,9 @@ class BMP581Component : public PollingComponent {
   virtual bool bmp_read_bytes(uint8_t a_register, uint8_t *data, size_t len) = 0;
   virtual bool bmp_write_bytes(uint8_t a_register, uint8_t *data, size_t len) = 0;
 
+  // Interface activation function. Only used for SPI interface; no-op for I2C.
+  virtual void activate_interface() {}
+
   sensor::Sensor *temperature_sensor_{nullptr};
   sensor::Sensor *pressure_sensor_{nullptr};
 
diff --git a/esphome/components/bmp581_spi/__init__.py b/esphome/components/bmp581_spi/__init__.py
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/esphome/components/bmp581_spi/bmp581_spi.cpp b/esphome/components/bmp581_spi/bmp581_spi.cpp
new file mode 100644
index 0000000000..01435880f0
--- /dev/null
+++ b/esphome/components/bmp581_spi/bmp581_spi.cpp
@@ -0,0 +1,73 @@
+#include <cstdint>
+#include <cstddef>
+
+#include "bmp581_spi.h"
+#include "esphome/components/bmp581_base/bmp581_base.h"
+#include "esphome/components/spi/spi.h"
+
+namespace esphome::bmp581_spi {
+
+static const char *const TAG = "bmp581_spi";
+
+// OR (|) register with BMP_SPI_READ for read
+inline constexpr uint8_t BMP_SPI_READ = 0x80;
+
+// AND (&) register with BMP_SPI_WRITE for write
+inline constexpr uint8_t BMP_SPI_WRITE = 0x7F;
+
+void BMP581SPIComponent::dump_config() {
+  BMP581Component::dump_config();
+  LOG_SPI_DEVICE(this);
+}
+
+void BMP581SPIComponent::setup() {
+  this->spi_setup();
+  BMP581Component::setup();
+}
+
+void BMP581SPIComponent::activate_interface() {
+  // - forces the device into SPI mode using a dummy read
+  uint8_t dummy_read = 0;
+  this->bmp_read_byte(bmp581_base::BMP581_CHIP_ID, &dummy_read);
+}
+
+// In SPI mode, only 7 bits of the register addresses are used; the MSB of register address is not used
+// and replaced by a read/write bit (RW = ‘0’ for write and RW = ‘1’ for read).
+// Example: address 0xF7 is accessed by using SPI register address 0x77. For write access, the byte
+// 0x77 is transferred, for read access, the byte 0xF7 is transferred.
+// The expressions BMP_SPI_READ (| with register) and BMP_SPI_WRITE (& with register)
+// are defined for readability.
+// https://www.bosch-sensortec.com/media/boschsensortec/downloads/datasheets/bst-bmp581-ds004.pdf
+
+bool BMP581SPIComponent::bmp_read_byte(uint8_t a_register, uint8_t *data) {
+  this->enable();
+  this->transfer_byte(a_register | BMP_SPI_READ);
+  *data = this->transfer_byte(0);
+  this->disable();
+  return true;
+}
+
+bool BMP581SPIComponent::bmp_write_byte(uint8_t a_register, uint8_t data) {
+  this->enable();
+  this->transfer_byte(a_register & BMP_SPI_WRITE);
+  this->transfer_byte(data);
+  this->disable();
+  return true;
+}
+
+bool BMP581SPIComponent::bmp_read_bytes(uint8_t a_register, uint8_t *data, size_t len) {
+  this->enable();
+  this->transfer_byte(a_register | BMP_SPI_READ);
+  this->read_array(data, len);
+  this->disable();
+  return true;
+}
+
+bool BMP581SPIComponent::bmp_write_bytes(uint8_t a_register, uint8_t *data, size_t len) {
+  this->enable();
+  this->transfer_byte(a_register & BMP_SPI_WRITE);
+  this->write_array(data, len);
+  this->disable();
+  return true;
+}
+}  // namespace esphome::bmp581_spi
diff --git a/esphome/components/bmp581_spi/bmp581_spi.h b/esphome/components/bmp581_spi/bmp581_spi.h
new file mode 100644
index 0000000000..57f75588d5
--- /dev/null
+++ b/esphome/components/bmp581_spi/bmp581_spi.h
@@ -0,0 +1,24 @@
+#pragma once
+
+#include "esphome/components/bmp581_base/bmp581_base.h"
+#include "esphome/components/spi/spi.h"
+
+namespace esphome::bmp581_spi {
+
+// BMP581 is technically compatible with SPI Mode0 and Mode3. Default to Mode3.
+class BMP581SPIComponent : public esphome::bmp581_base::BMP581Component,
+                           public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_HIGH,
+                                                 spi::CLOCK_PHASE_TRAILING, spi::DATA_RATE_200KHZ> {
+ public:
+  void setup() override;
+  bool bmp_read_byte(uint8_t a_register, uint8_t *data) override;
+  bool bmp_write_byte(uint8_t a_register, uint8_t data) override;
+  bool bmp_read_bytes(uint8_t a_register, uint8_t *data, size_t len) override;
+  bool bmp_write_bytes(uint8_t a_register, uint8_t *data, size_t len) override;
+  void dump_config() override;
+
+ protected:
+  void activate_interface() override;
+};
+
+}  // namespace esphome::bmp581_spi
diff --git a/esphome/components/bmp581_spi/sensor.py b/esphome/components/bmp581_spi/sensor.py
new file mode 100644
index 0000000000..75f60b2460
--- /dev/null
+++ b/esphome/components/bmp581_spi/sensor.py
@@ -0,0 +1,48 @@
+import logging
+
+import esphome.codegen as cg
+from esphome.components import spi
+from esphome.components.spi import CONF_SPI_MODE
+import esphome.config_validation as cv
+
+from ..bmp581_base import CONFIG_SCHEMA_BASE, to_code_base
+
+AUTO_LOAD = ["bmp581_base"]
+CODEOWNERS = ["@kahrendt", "@danielkent-net"]
+DEPENDENCIES = ["spi"]
+
+_LOGGER = logging.getLogger(__name__)
+
+VALID_SPI_MODES = {
+    0: "MODE0",
+    "0": "MODE0",
+    "MODE0": "MODE0",
+    3: "MODE3",
+    "3": "MODE3",
+    "MODE3": "MODE3",
+}
+
+bmp581_ns = cg.esphome_ns.namespace("bmp581_spi")
+BMP581SPIComponent = bmp581_ns.class_(
+    "BMP581SPIComponent", cg.PollingComponent, spi.SPIDevice
+)
+
+
+def check_spi_mode(config):
+    spi_mode = config.get(CONF_SPI_MODE)
+    if spi_mode not in VALID_SPI_MODES:
+        raise cv.Invalid("BMP581 only supports SPI mode 3")
+    return config
+
+
+CONFIG_SCHEMA = cv.All(
+    CONFIG_SCHEMA_BASE.extend(spi.spi_device_schema(default_mode="mode3")).extend(
+        {cv.GenerateID(): cv.declare_id(BMP581SPIComponent)}
+    ),
+    check_spi_mode,
+)
+
+
+async def to_code(config):
+    var = await to_code_base(config)
+    await spi.register_spi_device(var, config)
diff --git a/esphome/components/button/__init__.py b/esphome/components/button/__init__.py
index 12d9ebaba6..f279b6ffe3 100644
--- a/esphome/components/button/__init__.py
+++ b/esphome/components/button/__init__.py
@@ -10,7 +10,6 @@ from esphome.const import (
     CONF_ID,
     CONF_MQTT_ID,
     CONF_ON_PRESS,
-    CONF_TRIGGER_ID,
     CONF_WEB_SERVER,
     DEVICE_CLASS_EMPTY,
     DEVICE_CLASS_IDENTIFY,
@@ -41,10 +40,6 @@ ButtonPtr = Button.operator("ptr")
 
 PressAction = button_ns.class_("PressAction", automation.Action)
 
-ButtonPressTrigger = button_ns.class_(
-    "ButtonPressTrigger", automation.Trigger.template()
-)
-
 validate_device_class = cv.one_of(*DEVICE_CLASSES, lower=True, space="_")
 
 
@@ -55,11 +50,7 @@ _BUTTON_SCHEMA = (
         {
             cv.OnlyWith(CONF_MQTT_ID, "mqtt"): cv.declare_id(mqtt.MQTTButtonComponent),
             cv.Optional(CONF_DEVICE_CLASS): validate_device_class,
-            cv.Optional(CONF_ON_PRESS): automation.validate_automation(
-                {
-                    cv.GenerateID(CONF_TRIGGER_ID): cv.declare_id(ButtonPressTrigger),
-                }
-            ),
+            cv.Optional(CONF_ON_PRESS): automation.validate_automation({}),
         }
     )
 )
@@ -91,8 +82,9 @@ def button_schema(
 @setup_entity("button")
 async def setup_button_core_(var, config):
     for conf in config.get(CONF_ON_PRESS, []):
-        trigger = cg.new_Pvariable(conf[CONF_TRIGGER_ID], var)
-        await automation.build_automation(trigger, [], conf)
+        await automation.build_callback_automation(
+            var, "add_on_press_callback", [], conf
+        )
 
     setup_device_class(config)
 
diff --git a/esphome/components/climate/climate.cpp b/esphome/components/climate/climate.cpp
index 5cbe9a5daf..32cac0961c 100644
--- a/esphome/components/climate/climate.cpp
+++ b/esphome/components/climate/climate.cpp
@@ -367,7 +367,7 @@ optional<ClimateDeviceRestoreState> Climate::restore_state_() {
   return recovered;
 }
 
-void Climate::save_state_() {
+void Climate::save_state_(const ClimateTraits &traits) {
 #if (defined(USE_ESP32) || (defined(USE_ESP8266) && USE_ARDUINO_VERSION_CODE >= VERSION_CODE(3, 0, 0))) && \
     !defined(CLANG_TIDY)
 #pragma GCC diagnostic ignored "-Wclass-memaccess"
@@ -382,7 +382,6 @@ void Climate::save_state_() {
 #endif
 
   state.mode = this->mode;
-  auto traits = this->get_traits();
   if (traits.has_feature_flags(CLIMATE_SUPPORTS_TWO_POINT_TARGET_TEMPERATURE |
                                CLIMATE_REQUIRES_TWO_POINT_TARGET_TEMPERATURE)) {
     state.target_temperature_low = this->target_temperature_low;
@@ -480,7 +479,7 @@ void Climate::publish_state() {
   ControllerRegistry::notify_climate_update(this);
 #endif
   // Save state
-  this->save_state_();
+  this->save_state_(traits);
 }
 
 ClimateTraits Climate::get_traits() {
diff --git a/esphome/components/climate/climate.h b/esphome/components/climate/climate.h
index e2cb743c0a..0251365dd8 100644
--- a/esphome/components/climate/climate.h
+++ b/esphome/components/climate/climate.h
@@ -335,7 +335,8 @@ class Climate : public EntityBase {
   /** Internal method to save the state of the climate device to recover memory. This is automatically
    * called from publish_state()
    */
-  void save_state_();
+  void save_state_(const ClimateTraits &traits);
+  void save_state_() { this->save_state_(this->traits()); }
 
   void dump_traits_(const char *tag);
 
diff --git a/esphome/components/event/__init__.py b/esphome/components/event/__init__.py
index 300902b8ca..527bb4ebba 100644
--- a/esphome/components/event/__init__.py
+++ b/esphome/components/event/__init__.py
@@ -10,7 +10,6 @@ from esphome.const import (
     CONF_ID,
     CONF_MQTT_ID,
     CONF_ON_EVENT,
-    CONF_TRIGGER_ID,
     CONF_WEB_SERVER,
     DEVICE_CLASS_BUTTON,
     DEVICE_CLASS_DOORBELL,
@@ -41,8 +40,6 @@ EventPtr = Event.operator("ptr")
 
 TriggerEventAction = event_ns.class_("TriggerEventAction", automation.Action)
 
-EventTrigger = event_ns.class_("EventTrigger", automation.Trigger.template())
-
 validate_device_class = cv.one_of(*DEVICE_CLASSES, lower=True, space="_")
 
 _EVENT_SCHEMA = (
@@ -53,11 +50,7 @@ _EVENT_SCHEMA = (
             cv.OnlyWith(CONF_MQTT_ID, "mqtt"): cv.declare_id(mqtt.MQTTEventComponent),
             cv.GenerateID(): cv.declare_id(Event),
             cv.Optional(CONF_DEVICE_CLASS): validate_device_class,
-            cv.Optional(CONF_ON_EVENT): automation.validate_automation(
-                {
-                    cv.GenerateID(CONF_TRIGGER_ID): cv.declare_id(EventTrigger),
-                }
-            ),
+            cv.Optional(CONF_ON_EVENT): automation.validate_automation({}),
         }
     )
 )
@@ -92,8 +85,9 @@ def event_schema(
 @setup_entity("event")
 async def setup_event_core_(var, config, *, event_types: list[str]):
     for conf in config.get(CONF_ON_EVENT, []):
-        trigger = cg.new_Pvariable(conf[CONF_TRIGGER_ID], var)
-        await automation.build_automation(trigger, [(cg.StringRef, "event_type")], conf)
+        await automation.build_callback_automation(
+            var, "add_on_event_callback", [(cg.StringRef, "event_type")], conf
+        )
 
     cg.add(var.set_event_types(event_types))
 
diff --git a/esphome/components/light/__init__.py b/esphome/components/light/__init__.py
index 4090ca57c2..5925afb472 100644
--- a/esphome/components/light/__init__.py
+++ b/esphome/components/light/__init__.py
@@ -24,6 +24,7 @@ from esphome.const import (
     CONF_ID,
     CONF_INITIAL_STATE,
     CONF_MQTT_ID,
+    CONF_NAME,
     CONF_ON_STATE,
     CONF_ON_TURN_OFF,
     CONF_ON_TURN_ON,
@@ -41,6 +42,8 @@ from esphome.const import (
 from esphome.core import CORE, ID, CoroPriority, HexInt, Lambda, coroutine_with_priority
 from esphome.core.entity_helpers import entity_duplicate_validator, setup_entity
 from esphome.cpp_generator import MockObjClass
+import esphome.final_validate as fv
+from esphome.types import ConfigType
 
 from .automation import LIGHT_STATE_SCHEMA
 from .effects import (
@@ -70,9 +73,19 @@ IS_PLATFORM_COMPONENT = True
 DOMAIN = "light"
 
 
+@dataclass
+class EffectRef:
+    """A pending effect name reference from a light action to validate."""
+
+    light_id: ID
+    effect_name: str
+    component_path: list[str | int]  # path_context when the action was validated
+
+
 @dataclass
 class LightData:
     gamma_tables: dict = field(default_factory=dict)  # gamma_value -> fwd_arr
+    effect_refs: list[EffectRef] = field(default_factory=list)
 
 
 def _get_data() -> LightData:
@@ -115,6 +128,68 @@ def _get_or_create_gamma_table(gamma_correct):
     return fwd_arr
 
 
+def find_effect_index(effects: list, effect_name: str) -> int | None:
+    """Find the 1-based index of an effect by name (case-insensitive).
+
+    Returns the 1-based index if found, or None if not found.
+    """
+    effect_name_lower = effect_name.lower()
+    for i, effect_conf in enumerate(effects):
+        key = next(iter(effect_conf))
+        if effect_conf[key][CONF_NAME].lower() == effect_name_lower:
+            return i + 1
+    return None
+
+
+def available_effects_str(effects: list) -> str:
+    """Return a comma-separated string of available effect names."""
+    available = [
+        effect_conf[next(iter(effect_conf))][CONF_NAME] for effect_conf in effects
+    ]
+    return ", ".join(f"'{name}'" for name in available) if available else "none"
+
+
+def _final_validate(config: ConfigType) -> ConfigType:
+    """Validate all recorded effect name references against their target lights.
+
+    This runs once per light platform instance. If no light platform is configured,
+    this never runs — but the ID validator will catch the missing light ID separately.
+    """
+    data = _get_data()
+    if not data.effect_refs:
+        return config
+
+    # Drain the list so we only validate once even though
+    # FINAL_VALIDATE_SCHEMA runs for each light platform instance.
+    refs = data.effect_refs
+    data.effect_refs = []
+
+    fconf = fv.full_config.get()
+
+    for ref in refs:
+        try:
+            light_path = fconf.get_path_for_id(ref.light_id)[:-1]
+            light_config = fconf.get_config_for_path(light_path)
+        except KeyError:
+            # Light ID not found — ID validation will have already reported this
+            continue
+
+        effects = light_config.get(CONF_EFFECTS, [])
+
+        if find_effect_index(effects, ref.effect_name) is None:
+            raise cv.FinalExternalInvalid(
+                f"Effect '{ref.effect_name}' not found for light "
+                f"'{ref.light_id}'. "
+                f"Available effects: {available_effects_str(effects)}",
+                path=[cv.ROOT_CONFIG_PATH] + ref.component_path,
+            )
+
+    return config
+
+
+FINAL_VALIDATE_SCHEMA = _final_validate
+
+
 LightRestoreMode = light_ns.enum("LightRestoreMode")
 RESTORE_MODES = {
     "RESTORE_DEFAULT_OFF": LightRestoreMode.LIGHT_RESTORE_DEFAULT_OFF,
diff --git a/esphome/components/light/automation.py b/esphome/components/light/automation.py
index 55273003b9..16e7d72f6b 100644
--- a/esphome/components/light/automation.py
+++ b/esphome/components/light/automation.py
@@ -1,5 +1,6 @@
 from esphome import automation
 import esphome.codegen as cg
+from esphome.config import path_context
 import esphome.config_validation as cv
 from esphome.const import (
     CONF_BLUE,
@@ -17,7 +18,6 @@ from esphome.const import (
     CONF_LIMIT_MODE,
     CONF_MAX_BRIGHTNESS,
     CONF_MIN_BRIGHTNESS,
-    CONF_NAME,
     CONF_RANGE_FROM,
     CONF_RANGE_TO,
     CONF_RED,
@@ -26,7 +26,7 @@ from esphome.const import (
     CONF_WARM_WHITE,
     CONF_WHITE,
 )
-from esphome.core import CORE, Lambda
+from esphome.core import CORE, EsphomeError, Lambda
 from esphome.cpp_generator import LambdaExpression
 from esphome.types import ConfigType
 
@@ -98,6 +98,31 @@ LIGHT_CONTROL_ACTION_SCHEMA = LIGHT_STATE_SCHEMA.extend(
     }
 )
 
+
+def _record_effect_ref(config: ConfigType) -> ConfigType:
+    """Record a static effect name reference for later cross-component validation."""
+    if CONF_EFFECT not in config:
+        return config
+    effect = config[CONF_EFFECT]
+    if isinstance(effect, Lambda):
+        return config  # Lambda effects resolved at runtime
+    if effect.lower() == "none":
+        return config  # "None" is always valid
+
+    from . import EffectRef, _get_data
+
+    _get_data().effect_refs.append(
+        EffectRef(
+            light_id=config[CONF_ID],
+            effect_name=effect,
+            component_path=path_context.get(),
+        )
+    )
+    return config
+
+
+LIGHT_CONTROL_ACTION_SCHEMA.add_extra(_record_effect_ref)
+
 LIGHT_TURN_OFF_ACTION_SCHEMA = automation.maybe_simple_id(
     {
         cv.Required(CONF_ID): cv.use_id(LightState),
@@ -122,18 +147,24 @@ def _resolve_effect_index(config: ConfigType) -> int:
     Effect index 0 means "None" (no effect). Effects are 1-indexed matching
     the C++ convention in LightState.
     """
+    from . import available_effects_str, find_effect_index
+
     original_name = config[CONF_EFFECT]
-    effect_name = original_name.lower()
-    if effect_name == "none":
+    if original_name.lower() == "none":
         return 0
     light_id = config[CONF_ID]
     light_path = CORE.config.get_path_for_id(light_id)[:-1]
     light_config = CORE.config.get_config_for_path(light_path)
-    for i, effect_conf in enumerate(light_config.get(CONF_EFFECTS, [])):
-        key = next(iter(effect_conf))
-        if effect_conf[key][CONF_NAME].lower() == effect_name:
-            return i + 1
-    raise ValueError(f"Effect '{original_name}' not found in light '{light_id}'")
+    effects = light_config.get(CONF_EFFECTS, [])
+    index = find_effect_index(effects, original_name)
+    if index is not None:
+        return index
+    # Should never reach here — effect names are validated during config
+    # validation in FINAL_VALIDATE_SCHEMA. This is a safety net.
+    raise EsphomeError(
+        f"Effect '{original_name}' not found for light '{light_id}'. "
+        f"Available effects: {available_effects_str(effects)}"
+    )
 
 
 @automation.register_action(
diff --git a/esphome/components/logger/logger.cpp b/esphome/components/logger/logger.cpp
index cd6543bfb8..23b69c36c6 100644
--- a/esphome/components/logger/logger.cpp
+++ b/esphome/components/logger/logger.cpp
@@ -243,6 +243,16 @@ void Logger::dump_config() {
 #endif
 #ifdef USE_ZEPHYR
   dump_crash_();
+#endif
+  // Warn users that VERBOSE/VERY_VERBOSE logging impacts performance.
+  // Only the compiled log level matters — all log calls up to this level
+  // are in the binary and will be formatted (vsnprintf) and block UART.
+#if ESPHOME_LOG_LEVEL >= ESPHOME_LOG_LEVEL_VERY_VERBOSE
+  ESP_LOGW(TAG, "VERY_VERBOSE logging is active — significant performance impact, short-term debugging only\n"
+                "  May cause connection instability. Set log level to DEBUG or lower for long-term use.");
+#elif ESPHOME_LOG_LEVEL >= ESPHOME_LOG_LEVEL_VERBOSE
+  ESP_LOGI(TAG, "VERBOSE logging is active — performance impact, short-term debugging only\n"
+                "  Set log level to DEBUG or lower for long-term use.");
 #endif
 }
 
diff --git a/esphome/components/nextion/nextion.cpp b/esphome/components/nextion/nextion.cpp
index ac17e14312..612bfbc968 100644
--- a/esphome/components/nextion/nextion.cpp
+++ b/esphome/components/nextion/nextion.cpp
@@ -90,7 +90,7 @@ bool Nextion::check_connect_() {
 #endif  // NEXTION_PROTOCOL_LOG
 
     ESP_LOGW(TAG, "Not connected");
-    comok_sent_ = 0;
+    this->comok_sent_ = 0;
     return false;
   }
 
diff --git a/esphome/components/nextion/nextion_commands.cpp b/esphome/components/nextion/nextion_commands.cpp
index 2adf314a2e..4ddbfbee6a 100644
--- a/esphome/components/nextion/nextion_commands.cpp
+++ b/esphome/components/nextion/nextion_commands.cpp
@@ -106,7 +106,7 @@ void Nextion::set_component_pressed_foreground_color(const char *component, uint
 }
 
 void Nextion::set_component_pressed_foreground_color(const char *component, const char *color) {
-  this->add_no_result_to_queue_with_printf_("set_component_pressed_foreground_color", " %s.pco2=%s", component, color);
+  this->add_no_result_to_queue_with_printf_("set_component_pressed_foreground_color", "%s.pco2=%s", component, color);
 }
 
 void Nextion::set_component_pressed_foreground_color(const char *component, Color color) {
@@ -134,7 +134,7 @@ void Nextion::set_component_pressed_font_color(const char *component, uint16_t c
 }
 
 void Nextion::set_component_pressed_font_color(const char *component, const char *color) {
-  this->add_no_result_to_queue_with_printf_("set_component_pressed_font_color", " %s.pco2=%s", component, color);
+  this->add_no_result_to_queue_with_printf_("set_component_pressed_font_color", "%s.pco2=%s", component, color);
 }
 
 void Nextion::set_component_pressed_font_color(const char *component, Color color) {
diff --git a/esphome/components/nextion/nextion_upload_arduino.cpp b/esphome/components/nextion/nextion_upload_arduino.cpp
index 6c454ab745..f59b708002 100644
--- a/esphome/components/nextion/nextion_upload_arduino.cpp
+++ b/esphome/components/nextion/nextion_upload_arduino.cpp
@@ -22,9 +22,9 @@ static constexpr size_t NEXTION_MAX_RESPONSE_LOG_BYTES = 16;
 int Nextion::upload_by_chunks_(HTTPClient &http_client, uint32_t &range_start) {
   uint32_t range_size = this->tft_size_ - range_start;
   ESP_LOGV(TAG, "Heap: %" PRIu32, EspClass::getFreeHeap());
-  uint32_t range_end = ((upload_first_chunk_sent_ or this->tft_size_ < 4096) ? this->tft_size_ : 4096) - 1;
+  uint32_t range_end = ((this->upload_first_chunk_sent_ || this->tft_size_ < 4096) ? this->tft_size_ : 4096) - 1;
   ESP_LOGD(TAG, "Range start: %" PRIu32, range_start);
-  if (range_size <= 0 or range_end <= range_start) {
+  if (range_size <= 0 || range_end <= range_start) {
     ESP_LOGE(TAG, "Invalid range end: %" PRIu32 ", size: %" PRIu32, range_end, range_size);
     return -1;
   }
@@ -34,7 +34,7 @@ int Nextion::upload_by_chunks_(HTTPClient &http_client, uint32_t &range_start) {
   ESP_LOGV(TAG, "Range: %s", range_header);
   http_client.addHeader("Range", range_header);
   int code = http_client.GET();
-  if (code != HTTP_CODE_OK and code != HTTP_CODE_PARTIAL_CONTENT) {
+  if (code != HTTP_CODE_OK && code != HTTP_CODE_PARTIAL_CONTENT) {
     ESP_LOGW(TAG, "HTTP failed: %s", HTTPClient::errorToString(code).c_str());
     return -1;
   }
@@ -80,12 +80,12 @@ int Nextion::upload_by_chunks_(HTTPClient &http_client, uint32_t &range_start) {
       recv_string.clear();
       this->write_array(buffer, buffer_size);
       App.feed_wdt();
-      this->recv_ret_string_(recv_string, upload_first_chunk_sent_ ? 500 : 5000, true);
+      this->recv_ret_string_(recv_string, this->upload_first_chunk_sent_ ? 500 : 5000, true);
       this->content_length_ -= read_len;
       const float upload_percentage = 100.0f * (this->tft_size_ - this->content_length_) / this->tft_size_;
       ESP_LOGD(TAG, "Upload: %0.2f%% (%" PRIu32 " left, heap: %" PRIu32 ")", upload_percentage, this->content_length_,
                EspClass::getFreeHeap());
-      upload_first_chunk_sent_ = true;
+      this->upload_first_chunk_sent_ = true;
       if (recv_string.empty()) {
         ESP_LOGW(TAG, "No response from display during upload");
         allocator.deallocate(buffer, 4096);
@@ -112,7 +112,7 @@ int Nextion::upload_by_chunks_(HTTPClient &http_client, uint32_t &range_start) {
         allocator.deallocate(buffer, 4096);
         buffer = nullptr;
         return range_end + 1;
-      } else if (recv_string[0] != 0x05 and recv_string[0] != 0x08) {  // 0x05 == "ok"
+      } else if (recv_string[0] != 0x05 && recv_string[0] != 0x08) {  // 0x05 == "ok"
         char hex_buf[format_hex_pretty_size(NEXTION_MAX_RESPONSE_LOG_BYTES)];
         ESP_LOGE(
             TAG, "Invalid response: [%s]",
@@ -214,7 +214,7 @@ bool Nextion::upload_tft(uint32_t baud_rate, bool exit_reparse) {
     ++tries;
   }
 
-  if (code != 200 and code != 206) {
+  if (code != 200 && code != 206) {
     ESP_LOGE(TAG, "HTTP request failed with status %d", code);
     return this->upload_end_(false);
   }
diff --git a/esphome/components/number/__init__.py b/esphome/components/number/__init__.py
index 0570ac0b1e..90f9fe1835 100644
--- a/esphome/components/number/__init__.py
+++ b/esphome/components/number/__init__.py
@@ -155,9 +155,6 @@ Number = number_ns.class_("Number", cg.EntityBase)
 NumberPtr = Number.operator("ptr")
 
 # Triggers
-NumberStateTrigger = number_ns.class_(
-    "NumberStateTrigger", automation.Trigger.template(cg.float_)
-)
 ValueRangeTrigger = number_ns.class_(
     "ValueRangeTrigger", automation.Trigger.template(cg.float_), cg.Component
 )
@@ -198,11 +195,7 @@ _NUMBER_SCHEMA = (
     .extend(
         {
             cv.OnlyWith(CONF_MQTT_ID, "mqtt"): cv.declare_id(mqtt.MQTTNumberComponent),
-            cv.Optional(CONF_ON_VALUE): automation.validate_automation(
-                {
-                    cv.GenerateID(CONF_TRIGGER_ID): cv.declare_id(NumberStateTrigger),
-                }
-            ),
+            cv.Optional(CONF_ON_VALUE): automation.validate_automation({}),
             cv.Optional(CONF_ON_VALUE_RANGE): automation.validate_automation(
                 {
                     cv.GenerateID(CONF_TRIGGER_ID): cv.declare_id(ValueRangeTrigger),
@@ -248,8 +241,9 @@ def number_schema(
 @coroutine_with_priority(CoroPriority.AUTOMATION)
 async def _build_number_automations(var, config):
     for conf in config.get(CONF_ON_VALUE, []):
-        trigger = cg.new_Pvariable(conf[CONF_TRIGGER_ID], var)
-        await automation.build_automation(trigger, [(float, "x")], conf)
+        await automation.build_callback_automation(
+            var, "add_on_state_callback", [(float, "x")], conf
+        )
     for conf in config.get(CONF_ON_VALUE_RANGE, []):
         trigger = cg.new_Pvariable(conf[CONF_TRIGGER_ID], var)
         await cg.register_component(trigger, conf)
diff --git a/esphome/components/sensor/__init__.py b/esphome/components/sensor/__init__.py
index 9f3c1484b0..19d03a0afc 100644
--- a/esphome/components/sensor/__init__.py
+++ b/esphome/components/sensor/__init__.py
@@ -238,12 +238,6 @@ Sensor = sensor_ns.class_("Sensor", cg.EntityBase)
 SensorPtr = Sensor.operator("ptr")
 
 # Triggers
-SensorStateTrigger = sensor_ns.class_(
-    "SensorStateTrigger", automation.Trigger.template(cg.float_)
-)
-SensorRawStateTrigger = sensor_ns.class_(
-    "SensorRawStateTrigger", automation.Trigger.template(cg.float_)
-)
 ValueRangeTrigger = sensor_ns.class_(
     "ValueRangeTrigger", automation.Trigger.template(cg.float_), cg.Component
 )
@@ -316,18 +310,8 @@ _SENSOR_SCHEMA = (
                 cv.Any(None, cv.positive_time_period_milliseconds),
             ),
             cv.Optional(CONF_FILTERS): validate_filters,
-            cv.Optional(CONF_ON_VALUE): automation.validate_automation(
-                {
-                    cv.GenerateID(CONF_TRIGGER_ID): cv.declare_id(SensorStateTrigger),
-                }
-            ),
-            cv.Optional(CONF_ON_RAW_VALUE): automation.validate_automation(
-                {
-                    cv.GenerateID(CONF_TRIGGER_ID): cv.declare_id(
-                        SensorRawStateTrigger
-                    ),
-                }
-            ),
+            cv.Optional(CONF_ON_VALUE): automation.validate_automation({}),
+            cv.Optional(CONF_ON_RAW_VALUE): automation.validate_automation({}),
             cv.Optional(CONF_ON_VALUE_RANGE): automation.validate_automation(
                 {
                     cv.GenerateID(CONF_TRIGGER_ID): cv.declare_id(ValueRangeTrigger),
@@ -897,12 +881,14 @@ async def build_filters(config):
 
 @coroutine_with_priority(CoroPriority.AUTOMATION)
 async def _build_sensor_automations(var, config):
-    for conf in config.get(CONF_ON_VALUE, []):
-        trigger = cg.new_Pvariable(conf[CONF_TRIGGER_ID], var)
-        await automation.build_automation(trigger, [(float, "x")], conf)
-    for conf in config.get(CONF_ON_RAW_VALUE, []):
-        trigger = cg.new_Pvariable(conf[CONF_TRIGGER_ID], var)
-        await automation.build_automation(trigger, [(float, "x")], conf)
+    for conf_key, callback in (
+        (CONF_ON_VALUE, "add_on_state_callback"),
+        (CONF_ON_RAW_VALUE, "add_on_raw_state_callback"),
+    ):
+        for conf in config.get(conf_key, []):
+            await automation.build_callback_automation(
+                var, callback, [(float, "x")], conf
+            )
     for conf in config.get(CONF_ON_VALUE_RANGE, []):
         trigger = cg.new_Pvariable(conf[CONF_TRIGGER_ID], var)
         await cg.register_component(trigger, conf)
diff --git a/esphome/components/switch/__init__.py b/esphome/components/switch/__init__.py
index bbafc54bd1..c4dd4856e3 100644
--- a/esphome/components/switch/__init__.py
+++ b/esphome/components/switch/__init__.py
@@ -15,7 +15,6 @@ from esphome.const import (
     CONF_ON_TURN_ON,
     CONF_RESTORE_MODE,
     CONF_STATE,
-    CONF_TRIGGER_ID,
     CONF_WEB_SERVER,
     DEVICE_CLASS_EMPTY,
     DEVICE_CLASS_OUTLET,
@@ -61,17 +60,6 @@ TurnOnAction = switch_ns.class_("TurnOnAction", automation.Action)
 SwitchPublishAction = switch_ns.class_("SwitchPublishAction", automation.Action)
 
 SwitchCondition = switch_ns.class_("SwitchCondition", Condition)
-SwitchStateTrigger = switch_ns.class_(
-    "SwitchStateTrigger", automation.Trigger.template(bool)
-)
-SwitchTurnOnTrigger = switch_ns.class_(
-    "SwitchTurnOnTrigger", automation.Trigger.template()
-)
-SwitchTurnOffTrigger = switch_ns.class_(
-    "SwitchTurnOffTrigger", automation.Trigger.template()
-)
-
-
 validate_device_class = cv.one_of(*DEVICE_CLASSES, lower=True)
 
 
@@ -86,21 +74,9 @@ _SWITCH_SCHEMA = (
             cv.Optional(CONF_RESTORE_MODE, default="ALWAYS_OFF"): cv.enum(
                 RESTORE_MODES, upper=True, space="_"
             ),
-            cv.Optional(CONF_ON_STATE): automation.validate_automation(
-                {
-                    cv.GenerateID(CONF_TRIGGER_ID): cv.declare_id(SwitchStateTrigger),
-                }
-            ),
-            cv.Optional(CONF_ON_TURN_ON): automation.validate_automation(
-                {
-                    cv.GenerateID(CONF_TRIGGER_ID): cv.declare_id(SwitchTurnOnTrigger),
-                }
-            ),
-            cv.Optional(CONF_ON_TURN_OFF): automation.validate_automation(
-                {
-                    cv.GenerateID(CONF_TRIGGER_ID): cv.declare_id(SwitchTurnOffTrigger),
-                }
-            ),
+            cv.Optional(CONF_ON_STATE): automation.validate_automation({}),
+            cv.Optional(CONF_ON_TURN_ON): automation.validate_automation({}),
+            cv.Optional(CONF_ON_TURN_OFF): automation.validate_automation({}),
             cv.Optional(CONF_DEVICE_CLASS): validate_device_class,
         }
     )
@@ -147,15 +123,15 @@ def switch_schema(
 
 @coroutine_with_priority(CoroPriority.AUTOMATION)
 async def _build_switch_automations(var, config):
-    for conf in config.get(CONF_ON_STATE, []):
-        trigger = cg.new_Pvariable(conf[CONF_TRIGGER_ID], var)
-        await automation.build_automation(trigger, [(bool, "x")], conf)
-    for conf in config.get(CONF_ON_TURN_ON, []):
-        trigger = cg.new_Pvariable(conf[CONF_TRIGGER_ID], var)
-        await automation.build_automation(trigger, [], conf)
-    for conf in config.get(CONF_ON_TURN_OFF, []):
-        trigger = cg.new_Pvariable(conf[CONF_TRIGGER_ID], var)
-        await automation.build_automation(trigger, [], conf)
+    for conf_key, args, forwarder in (
+        (CONF_ON_STATE, [(bool, "x")], None),
+        (CONF_ON_TURN_ON, [], automation.TriggerOnTrueForwarder),
+        (CONF_ON_TURN_OFF, [], automation.TriggerOnFalseForwarder),
+    ):
+        for conf in config.get(conf_key, []):
+            await automation.build_callback_automation(
+                var, "add_on_state_callback", args, conf, forwarder=forwarder
+            )
 
 
 @setup_entity("switch")
diff --git a/esphome/components/text_sensor/__init__.py b/esphome/components/text_sensor/__init__.py
index 97f394ecf7..51eedf9a95 100644
--- a/esphome/components/text_sensor/__init__.py
+++ b/esphome/components/text_sensor/__init__.py
@@ -14,7 +14,6 @@ from esphome.const import (
     CONF_ON_VALUE,
     CONF_STATE,
     CONF_TO,
-    CONF_TRIGGER_ID,
     CONF_WEB_SERVER,
     DEVICE_CLASS_DATE,
     DEVICE_CLASS_EMPTY,
@@ -42,12 +41,6 @@ text_sensor_ns = cg.esphome_ns.namespace("text_sensor")
 TextSensor = text_sensor_ns.class_("TextSensor", cg.EntityBase)
 TextSensorPtr = TextSensor.operator("ptr")
 
-TextSensorStateTrigger = text_sensor_ns.class_(
-    "TextSensorStateTrigger", automation.Trigger.template(cg.std_string)
-)
-TextSensorStateRawTrigger = text_sensor_ns.class_(
-    "TextSensorStateRawTrigger", automation.Trigger.template(cg.std_string)
-)
 TextSensorPublishAction = text_sensor_ns.class_(
     "TextSensorPublishAction", automation.Action
 )
@@ -150,20 +143,8 @@ _TEXT_SENSOR_SCHEMA = (
             cv.GenerateID(): cv.declare_id(TextSensor),
             cv.Optional(CONF_DEVICE_CLASS): validate_device_class,
             cv.Optional(CONF_FILTERS): validate_filters,
-            cv.Optional(CONF_ON_VALUE): automation.validate_automation(
-                {
-                    cv.GenerateID(CONF_TRIGGER_ID): cv.declare_id(
-                        TextSensorStateTrigger
-                    ),
-                }
-            ),
-            cv.Optional(CONF_ON_RAW_VALUE): automation.validate_automation(
-                {
-                    cv.GenerateID(CONF_TRIGGER_ID): cv.declare_id(
-                        TextSensorStateRawTrigger
-                    ),
-                }
-            ),
+            cv.Optional(CONF_ON_VALUE): automation.validate_automation({}),
+            cv.Optional(CONF_ON_RAW_VALUE): automation.validate_automation({}),
         }
     )
 )
@@ -203,13 +184,14 @@ async def build_filters(config):
 
 @coroutine_with_priority(CoroPriority.AUTOMATION)
 async def _build_text_sensor_automations(var, config):
-    for conf in config.get(CONF_ON_VALUE, []):
-        trigger = cg.new_Pvariable(conf[CONF_TRIGGER_ID], var)
-        await automation.build_automation(trigger, [(cg.std_string, "x")], conf)
-
-    for conf in config.get(CONF_ON_RAW_VALUE, []):
-        trigger = cg.new_Pvariable(conf[CONF_TRIGGER_ID], var)
-        await automation.build_automation(trigger, [(cg.std_string, "x")], conf)
+    for conf_key, callback in (
+        (CONF_ON_VALUE, "add_on_state_callback"),
+        (CONF_ON_RAW_VALUE, "add_on_raw_state_callback"),
+    ):
+        for conf in config.get(conf_key, []):
+            await automation.build_callback_automation(
+                var, callback, [(cg.std_string, "x")], conf
+            )
 
 
 @setup_entity("text_sensor")
diff --git a/esphome/components/wifi/wifi_component_esp_idf.cpp b/esphome/components/wifi/wifi_component_esp_idf.cpp
index 1b80adc82e..d8b3db9667 100644
--- a/esphome/components/wifi/wifi_component_esp_idf.cpp
+++ b/esphome/components/wifi/wifi_component_esp_idf.cpp
@@ -989,9 +989,11 @@ bool WiFiComponent::wifi_scan_start_(bool passive) {
   }
   // When scanning while connected (roaming), return to home channel between
   // each scanned channel to maintain the connection (helps with BLE/WiFi coexistence)
+#ifdef CONFIG_SOC_WIFI_SUPPORTED
   if (this->roaming_state_ == RoamingState::SCANNING) {
     config.coex_background_scan = true;
   }
+#endif
 
   esp_err_t err = esp_wifi_scan_start(&config, false);
   if (err != ESP_OK) {
diff --git a/esphome/core/automation.h b/esphome/core/automation.h
index ca4a2c8b6b..fc2cad99be 100644
--- a/esphome/core/automation.h
+++ b/esphome/core/automation.h
@@ -470,7 +470,9 @@ template<typename... Ts> class ActionList {
 
 template<typename... Ts> class Automation {
  public:
-  explicit Automation(Trigger<Ts...> *trigger) : trigger_(trigger) { this->trigger_->set_automation_parent(this); }
+  /// Default constructor for use with TriggerForwarder (no Trigger object needed).
+  Automation() = default;
+  explicit Automation(Trigger<Ts...> *trigger) { trigger->set_automation_parent(this); }
 
   void add_action(Action<Ts...> *action) { this->actions_.add_action(action); }
   void add_actions(const std::initializer_list<Action<Ts...> *> &actions) { this->actions_.add_actions(actions); }
@@ -487,8 +489,44 @@ template<typename... Ts> class Automation {
   int num_running() { return this->actions_.num_running(); }
 
  protected:
-  Trigger<Ts...> *trigger_;
   ActionList<Ts...> actions_;
 };
 
+/// Callback forwarder that triggers an Automation directly.
+/// One operator() instantiation per Automation<Ts...> signature, shared across all call sites.
+/// Must stay pointer-sized to fit inline in Callback::ctx_ without heap allocation.
+template<typename... Ts> struct TriggerForwarder {
+  Automation<Ts...> *automation;
+  void operator()(const Ts &...args) const { this->automation->trigger(args...); }
+};
+
+/// Callback forwarder that triggers an Automation<> only when the bool arg is true.
+/// Must stay pointer-sized to fit inline in Callback::ctx_ without heap allocation.
+struct TriggerOnTrueForwarder {
+  Automation<> *automation;
+  void operator()(bool state) const {
+    if (state)
+      this->automation->trigger();
+  }
+};
+
+/// Callback forwarder that triggers an Automation<> only when the bool arg is false.
+/// Must stay pointer-sized to fit inline in Callback::ctx_ without heap allocation.
+struct TriggerOnFalseForwarder {
+  Automation<> *automation;
+  void operator()(bool state) const {
+    if (!state)
+      this->automation->trigger();
+  }
+};
+
+// Ensure forwarders fit in Callback::ctx_ (pointer-sized inline storage).
+// If these fail, the forwarder would heap-allocate in Callback::create().
+static_assert(sizeof(TriggerForwarder<>) <= sizeof(void *));
+static_assert(sizeof(TriggerOnTrueForwarder) <= sizeof(void *));
+static_assert(sizeof(TriggerOnFalseForwarder) <= sizeof(void *));
+static_assert(std::is_trivially_copyable_v<TriggerForwarder<>>);
+static_assert(std::is_trivially_copyable_v<TriggerOnTrueForwarder>);
+static_assert(std::is_trivially_copyable_v<TriggerOnFalseForwarder>);
+
 }  // namespace esphome
diff --git a/esphome/core/controller_registry.cpp b/esphome/core/controller_registry.cpp
index 255efa86ba..dd69de47d4 100644
--- a/esphome/core/controller_registry.cpp
+++ b/esphome/core/controller_registry.cpp
@@ -10,24 +10,24 @@ StaticVector<Controller *, CONTROLLER_REGISTRY_MAX> ControllerRegistry::controll
 
 void ControllerRegistry::register_controller(Controller *controller) { controllers.push_back(controller); }
 
-void ControllerRegistry::notify(void *obj, DispatchFunc dispatch) {
-  for (auto *controller : controllers) {
-    dispatch(controller, obj);
-  }
-}
-
-// Macro for standard registry notification dispatch - calls on_<entity_name>_update()
-// Each wrapper passes a small trampoline lambda that calls the correct virtual method.
+// Each notify method directly iterates controllers and calls the virtual method.
+// This avoids the overhead of a shared noinline dispatch loop with function pointer
+// indirection. The loop is tiny (~20 bytes per entity type) so the flash cost of
+// duplicating it is negligible compared to eliminating two levels of indirection
+// (noinline call + function pointer) from every state publish.
 // NOLINTBEGIN(bugprone-macro-parentheses)
 #define CONTROLLER_REGISTRY_NOTIFY(entity_type, entity_name) \
   void ControllerRegistry::notify_##entity_name##_update(entity_type *obj) { \
-    notify(obj, [](Controller *c, void *o) { c->on_##entity_name##_update(static_cast<entity_type *>(o)); }); \
+    for (auto *controller : controllers) { \
+      controller->on_##entity_name##_update(obj); \
+    } \
   }
 
-// Macro for entities where controller method has no "_update" suffix (Event, Update)
 #define CONTROLLER_REGISTRY_NOTIFY_NO_UPDATE_SUFFIX(entity_type, entity_name) \
   void ControllerRegistry::notify_##entity_name(entity_type *obj) { \
-    notify(obj, [](Controller *c, void *o) { c->on_##entity_name(static_cast<entity_type *>(o)); }); \
+    for (auto *controller : controllers) { \
+      controller->on_##entity_name(obj); \
+    } \
   }
 // NOLINTEND(bugprone-macro-parentheses)
 
diff --git a/esphome/core/controller_registry.h b/esphome/core/controller_registry.h
index 15e3b4ba83..89b3069bcb 100644
--- a/esphome/core/controller_registry.h
+++ b/esphome/core/controller_registry.h
@@ -146,8 +146,8 @@ class UpdateEntity;
  * entities call ControllerRegistry::notify_*_update() which iterates the small list
  * of registered controllers (typically 2: API and WebServer).
  *
- * Controllers read state directly from entities using existing accessors (obj->state, etc.)
- * rather than receiving it as callback parameters that were being ignored anyway.
+ * Each notify method directly iterates controllers and calls the virtual method,
+ * avoiding function pointer indirection for minimal dispatch overhead.
  *
  * Memory savings: 32 bytes per entity (2 controllers × 16 bytes std::function overhead)
  * Typical config (25 entities): ~780 bytes saved
@@ -247,21 +247,6 @@ class ControllerRegistry {
 #endif
 
  protected:
-  /** Type-erased dispatch function pointer.
-   *
-   * Each notify method passes a small trampoline that calls the
-   * correct virtual method on Controller. The shared notify() loop
-   * iterates controllers once, calling the trampoline for each.
-   */
-  using DispatchFunc = void (*)(Controller *, void *);
-
-  /** Shared dispatch loop - iterates controllers and calls dispatch for each.
-   *
-   * Marked noinline to ensure only one copy of the loop exists in flash,
-   * rather than being duplicated into each notify_*_update wrapper.
-   */
-  static void __attribute__((noinline)) notify(void *obj, DispatchFunc dispatch);
-
   static StaticVector<Controller *, CONTROLLER_REGISTRY_MAX> controllers;
 };
 
diff --git a/esphome/writer.py b/esphome/writer.py
index 4aac16ffd4..06a2230118 100644
--- a/esphome/writer.py
+++ b/esphome/writer.py
@@ -476,6 +476,16 @@ def clean_all(configuration: list[str]):
         data_dirs.append(Path(env_data_dir))
     if env_build_path := os.environ.get("ESPHOME_BUILD_PATH"):
         data_dirs.append(Path(env_build_path))
+    if not data_dirs:
+        # No config files or known data dirs, check current directory
+        cwd_esphome = Path.cwd() / ".esphome"
+        if cwd_esphome.is_dir():
+            data_dirs.append(cwd_esphome)
+        else:
+            _LOGGER.warning(
+                "No configuration files specified and no .esphome directory found in current directory. "
+                "Pass YAML files or a configuration directory to clean build artifacts."
+            )
 
     # Clean build dir
     for dir in data_dirs:
diff --git a/requirements.txt b/requirements.txt
index ce735f398a..c74dd265c7 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-cryptography==46.0.5
+cryptography==46.0.6
 voluptuous==0.16.0
 PyYAML==6.0.3
 paho-mqtt==1.6.1
diff --git a/requirements_test.txt b/requirements_test.txt
index 1440b20333..3b277e214d 100644
--- a/requirements_test.txt
+++ b/requirements_test.txt
@@ -1,6 +1,6 @@
 pylint==4.0.5
 flake8==7.3.0  # also change in .pre-commit-config.yaml when updating
-ruff==0.15.7  # also change in .pre-commit-config.yaml when updating
+ruff==0.15.8  # also change in .pre-commit-config.yaml when updating
 pyupgrade==3.21.2  # also change in .pre-commit-config.yaml when updating
 pre-commit
 
diff --git a/tests/benchmarks/components/climate/__init__.py b/tests/benchmarks/components/climate/__init__.py
new file mode 100644
index 0000000000..b08f67a095
--- /dev/null
+++ b/tests/benchmarks/components/climate/__init__.py
@@ -0,0 +1,5 @@
+from tests.testing_helpers import ComponentManifestOverride
+
+
+def override_manifest(manifest: ComponentManifestOverride) -> None:
+    manifest.enable_codegen()
diff --git a/tests/benchmarks/components/climate/bench_climate.cpp b/tests/benchmarks/components/climate/bench_climate.cpp
new file mode 100644
index 0000000000..316a72b2b6
--- /dev/null
+++ b/tests/benchmarks/components/climate/bench_climate.cpp
@@ -0,0 +1,142 @@
+#include <benchmark/benchmark.h>
+
+#include "esphome/components/climate/climate.h"
+
+namespace esphome::benchmarks {
+
+// Inner iteration count to amortize CodSpeed instrumentation overhead.
+static constexpr int kInnerIterations = 2000;
+
+// Minimal Climate for benchmarking — control() is a no-op.
+class BenchClimate : public climate::Climate {
+ public:
+  void configure(const char *name) { this->configure_entity_(name, 0x12345678, 0); }
+
+  climate::ClimateTraits traits() override { return this->traits_; }
+
+  climate::ClimateTraits traits_;
+
+ protected:
+  void control(const climate::ClimateCall & /*call*/) override {}
+};
+
+// Helper to create a typical HVAC climate device for benchmarks.
+// Note: setup() is not called (no preferences backend), so save_state_()
+// is effectively a no-op. This benchmarks the call/validation path, not persistence.
+static void setup_hvac_climate(BenchClimate &climate) {
+  climate.configure("test_climate");
+  climate.traits_.set_supported_modes({
+      climate::CLIMATE_MODE_OFF,
+      climate::CLIMATE_MODE_HEAT_COOL,
+      climate::CLIMATE_MODE_COOL,
+      climate::CLIMATE_MODE_HEAT,
+      climate::CLIMATE_MODE_FAN_ONLY,
+  });
+  climate.traits_.set_supported_fan_modes({
+      climate::CLIMATE_FAN_AUTO,
+      climate::CLIMATE_FAN_LOW,
+      climate::CLIMATE_FAN_MEDIUM,
+      climate::CLIMATE_FAN_HIGH,
+  });
+  climate.traits_.set_supported_swing_modes({
+      climate::CLIMATE_SWING_OFF,
+      climate::CLIMATE_SWING_BOTH,
+      climate::CLIMATE_SWING_VERTICAL,
+      climate::CLIMATE_SWING_HORIZONTAL,
+  });
+  climate.traits_.set_supported_presets({
+      climate::CLIMATE_PRESET_NONE,
+      climate::CLIMATE_PRESET_HOME,
+      climate::CLIMATE_PRESET_AWAY,
+  });
+  climate.traits_.set_visual_min_temperature(16.0f);
+  climate.traits_.set_visual_max_temperature(30.0f);
+  climate.traits_.set_visual_target_temperature_step(0.5f);
+  climate.traits_.set_visual_current_temperature_step(0.1f);
+  climate.traits_.add_feature_flags(climate::CLIMATE_SUPPORTS_CURRENT_TEMPERATURE | climate::CLIMATE_SUPPORTS_ACTION);
+}
+
+// --- Climate::publish_state() with temperature update ---
+// Measures the publish path for a thermostat reporting state —
+// the hot path during HVAC operation.
+
+static void ClimatePublish_State(benchmark::State &state) {
+  BenchClimate climate;
+  setup_hvac_climate(climate);
+  climate.mode = climate::CLIMATE_MODE_HEAT;
+  climate.action = climate::CLIMATE_ACTION_HEATING;
+  climate.target_temperature = 22.0f;
+
+  for (auto _ : state) {
+    for (int i = 0; i < kInnerIterations; i++) {
+      climate.current_temperature = 20.0f + static_cast<float>(i % 100) / 10.0f;
+      climate.publish_state();
+    }
+    benchmark::DoNotOptimize(climate.current_temperature);
+  }
+  state.SetItemsProcessed(state.iterations() * kInnerIterations);
+}
+BENCHMARK(ClimatePublish_State);
+
+// --- Climate::publish_state() with callback ---
+// Measures callback dispatch overhead.
+
+static void ClimatePublish_WithCallback(benchmark::State &state) {
+  BenchClimate climate;
+  setup_hvac_climate(climate);
+  climate.mode = climate::CLIMATE_MODE_HEAT;
+  climate.target_temperature = 22.0f;
+
+  uint64_t callback_count = 0;
+  climate.add_on_state_callback([&callback_count](climate::Climate & /*c*/) { callback_count++; });
+
+  for (auto _ : state) {
+    for (int i = 0; i < kInnerIterations; i++) {
+      climate.current_temperature = 20.0f + static_cast<float>(i % 100) / 10.0f;
+      climate.publish_state();
+    }
+    benchmark::DoNotOptimize(callback_count);
+  }
+  state.SetItemsProcessed(state.iterations() * kInnerIterations);
+}
+BENCHMARK(ClimatePublish_WithCallback);
+
+// --- ClimateCall::perform() set target temperature ---
+// The most common climate call — adjusting the thermostat setpoint.
+
+static void ClimateCall_SetTemperature(benchmark::State &state) {
+  BenchClimate climate;
+  setup_hvac_climate(climate);
+  climate.mode = climate::CLIMATE_MODE_HEAT;
+
+  for (auto _ : state) {
+    for (int i = 0; i < kInnerIterations; i++) {
+      float temp = 18.0f + static_cast<float>(i % 25) * 0.5f;
+      climate.make_call().set_target_temperature(temp).perform();
+    }
+    benchmark::DoNotOptimize(climate.target_temperature);
+  }
+  state.SetItemsProcessed(state.iterations() * kInnerIterations);
+}
+BENCHMARK(ClimateCall_SetTemperature);
+
+// --- ClimateCall::perform() mode change with fan ---
+// Exercises the validation path with multiple fields set.
+
+static void ClimateCall_ModeChange(benchmark::State &state) {
+  BenchClimate climate;
+  setup_hvac_climate(climate);
+
+  for (auto _ : state) {
+    for (int i = 0; i < kInnerIterations; i++) {
+      auto mode = (i % 2 == 0) ? climate::CLIMATE_MODE_HEAT : climate::CLIMATE_MODE_COOL;
+      auto fan = (i % 2 == 0) ? climate::CLIMATE_FAN_HIGH : climate::CLIMATE_FAN_LOW;
+      climate.make_call().set_mode(mode).set_fan_mode(fan).set_target_temperature(22.0f).perform();
+    }
+    benchmark::DoNotOptimize(climate.mode);
+  }
+  state.SetItemsProcessed(state.iterations() * kInnerIterations);
+}
+BENCHMARK(ClimateCall_ModeChange);
+
+}  // namespace esphome::benchmarks
diff --git a/tests/benchmarks/components/climate/benchmark.yaml b/tests/benchmarks/components/climate/benchmark.yaml
new file mode 100644
index 0000000000..8e79ed0ae7
--- /dev/null
+++ b/tests/benchmarks/components/climate/benchmark.yaml
@@ -0,0 +1 @@
+climate:
diff --git a/tests/benchmarks/components/cover/__init__.py b/tests/benchmarks/components/cover/__init__.py
new file mode 100644
index 0000000000..b08f67a095
--- /dev/null
+++ b/tests/benchmarks/components/cover/__init__.py
@@ -0,0 +1,5 @@
+from tests.testing_helpers import ComponentManifestOverride
+
+
+def override_manifest(manifest: ComponentManifestOverride) -> None:
+    manifest.enable_codegen()
diff --git a/tests/benchmarks/components/cover/bench_cover_publish.cpp b/tests/benchmarks/components/cover/bench_cover_publish.cpp
new file mode 100644
index 0000000000..794d967edb
--- /dev/null
+++ b/tests/benchmarks/components/cover/bench_cover_publish.cpp
@@ -0,0 +1,107 @@
+#include <benchmark/benchmark.h>
+
+#include "esphome/components/cover/cover.h"
+
+namespace esphome::benchmarks {
+
+// Inner iteration count to amortize CodSpeed instrumentation overhead.
+static constexpr int kInnerIterations = 2000;
+
+// Minimal Cover for benchmarking — control() is a no-op.
+class BenchCover : public cover::Cover {
+ public:
+  cover::CoverTraits get_traits() override { return this->traits_; }
+  void configure(const char *name) { this->configure_entity_(name, 0x12345678, 0); }
+
+  cover::CoverTraits traits_;
+
+ protected:
+  void control(const cover::CoverCall & /*call*/) override {}
+};
+
+// --- Cover::publish_state() with position updates ---
+// Measures the publish path for a garage door reporting position
+// during open/close — the hot path during movement.
+
+static void CoverPublish_Position(benchmark::State &state) {
+  BenchCover cover;
+  cover.configure("test_cover");
+  cover.traits_.set_supports_position(true);
+  cover.traits_.set_supports_tilt(false);
+
+  for (auto _ : state) {
+    for (int i = 0; i < kInnerIterations; i++) {
+      cover.position = static_cast<float>(i % 101) / 100.0f;
+      cover.current_operation = (i % 2 == 0) ? cover::COVER_OPERATION_OPENING : cover::COVER_OPERATION_CLOSING;
+      cover.publish_state(false);
+    }
+    benchmark::DoNotOptimize(cover.position);
+  }
+  state.SetItemsProcessed(state.iterations() * kInnerIterations);
+}
+BENCHMARK(CoverPublish_Position);
+
+// --- Cover::publish_state() with callback ---
+// Measures callback dispatch overhead.
+
+static void CoverPublish_WithCallback(benchmark::State &state) {
+  BenchCover cover;
+  cover.configure("test_cover");
+  cover.traits_.set_supports_position(true);
+
+  uint64_t callback_count = 0;
+  cover.add_on_state_callback([&callback_count]() { callback_count++; });
+
+  for (auto _ : state) {
+    for (int i = 0; i < kInnerIterations; i++) {
+      cover.position = static_cast<float>(i % 101) / 100.0f;
+      cover.publish_state(false);
+    }
+    benchmark::DoNotOptimize(callback_count);
+  }
+  state.SetItemsProcessed(state.iterations() * kInnerIterations);
+}
+BENCHMARK(CoverPublish_WithCallback);
+
+// --- CoverCall::perform() open/close cycle ---
+// Measures the full call path: validation + control delegation.
+
+static void CoverCall_OpenClose(benchmark::State &state) {
+  BenchCover cover;
+  cover.configure("test_cover");
+  cover.traits_.set_supports_position(true);
+
+  for (auto _ : state) {
+    for (int i = 0; i < kInnerIterations; i++) {
+      if (i % 2 == 0) {
+        cover.make_call().set_command_open().perform();
+      } else {
+        cover.make_call().set_command_close().perform();
+      }
+    }
+    benchmark::DoNotOptimize(cover.position);
+  }
+  state.SetItemsProcessed(state.iterations() * kInnerIterations);
+}
+BENCHMARK(CoverCall_OpenClose);
+
+// --- CoverCall::perform() set position ---
+// Measures the position-setting call path.
+
+static void CoverCall_SetPosition(benchmark::State &state) {
+  BenchCover cover;
+  cover.configure("test_cover");
+  cover.traits_.set_supports_position(true);
+
+  for (auto _ : state) {
+    for (int i = 0; i < kInnerIterations; i++) {
+      float pos = static_cast<float>(i % 101) / 100.0f;
+      cover.make_call().set_position(pos).perform();
+    }
+    benchmark::DoNotOptimize(cover.position);
+  }
+  state.SetItemsProcessed(state.iterations() * kInnerIterations);
+}
+BENCHMARK(CoverCall_SetPosition);
+
+}  // namespace esphome::benchmarks
diff --git a/tests/benchmarks/components/cover/benchmark.yaml b/tests/benchmarks/components/cover/benchmark.yaml
new file mode 100644
index 0000000000..477724be5a
--- /dev/null
+++ b/tests/benchmarks/components/cover/benchmark.yaml
@@ -0,0 +1 @@
+cover:
diff --git a/tests/benchmarks/components/fan/__init__.py b/tests/benchmarks/components/fan/__init__.py
new file mode 100644
index 0000000000..b08f67a095
--- /dev/null
+++ b/tests/benchmarks/components/fan/__init__.py
@@ -0,0 +1,5 @@
+from tests.testing_helpers import ComponentManifestOverride
+
+
+def override_manifest(manifest: ComponentManifestOverride) -> None:
+    manifest.enable_codegen()
diff --git a/tests/benchmarks/components/fan/bench_fan.cpp b/tests/benchmarks/components/fan/bench_fan.cpp
new file mode 100644
index 0000000000..c7966c7886
--- /dev/null
+++ b/tests/benchmarks/components/fan/bench_fan.cpp
@@ -0,0 +1,122 @@
+#include <benchmark/benchmark.h>
+
+#include "esphome/components/fan/fan.h"
+
+namespace esphome::benchmarks {
+
+// Inner iteration count to amortize CodSpeed instrumentation overhead.
+static constexpr int kInnerIterations = 2000;
+
+// Minimal Fan for benchmarking — control() is a no-op.
+class BenchFan : public fan::Fan {
+ public:
+  void configure(const char *name) { this->configure_entity_(name, 0x12345678, 0); }
+
+  fan::FanTraits get_traits() override { return this->traits_; }
+
+  fan::FanTraits traits_;
+
+ protected:
+  void control(const fan::FanCall & /*call*/) override {}
+};
+
+// Helper to create a typical fan device for benchmarks.
+// Note: setup() is not called (no preferences backend), so save_state_()
+// is effectively a no-op. This benchmarks the call/validation path, not persistence.
+static void setup_fan(BenchFan &fan) {
+  fan.configure("test_fan");
+  fan.traits_.set_oscillation(true);
+  fan.traits_.set_speed(true);
+  fan.traits_.set_supported_speed_count(6);
+  fan.traits_.set_direction(true);
+  fan.set_restore_mode(fan::FanRestoreMode::NO_RESTORE);
+  fan.traits_.set_supported_preset_modes({
+      "auto",
+      "sleep",
+      "nature",
+      "turbo",
+  });
+}
+
+// --- Fan::publish_state() with speed update ---
+// Measures the publish path for a fan reporting state —
+// the hot path during fan operation.
+
+static void FanPublish_State(benchmark::State &state) {
+  BenchFan fan;
+  setup_fan(fan);
+  fan.state = true;
+  fan.direction = fan::FanDirection::FORWARD;
+
+  for (auto _ : state) {
+    for (int i = 0; i < kInnerIterations; i++) {
+      fan.speed = (i % 6) + 1;
+      fan.publish_state();
+    }
+    benchmark::DoNotOptimize(fan.speed);
+  }
+  state.SetItemsProcessed(state.iterations() * kInnerIterations);
+}
+BENCHMARK(FanPublish_State);
+
+// --- Fan::publish_state() with callback ---
+// Measures callback dispatch overhead.
+
+static void FanPublish_WithCallback(benchmark::State &state) {
+  BenchFan fan;
+  setup_fan(fan);
+  fan.state = true;
+
+  uint64_t callback_count = 0;
+  fan.add_on_state_callback([&callback_count]() { callback_count++; });
+
+  for (auto _ : state) {
+    for (int i = 0; i < kInnerIterations; i++) {
+      fan.speed = (i % 6) + 1;
+      fan.publish_state();
+    }
+    benchmark::DoNotOptimize(callback_count);
+  }
+  state.SetItemsProcessed(state.iterations() * kInnerIterations);
+}
+BENCHMARK(FanPublish_WithCallback);
+
+// --- FanCall::perform() set speed ---
+// The most common fan call — adjusting the speed level.
+
+static void FanCall_SetSpeed(benchmark::State &state) {
+  BenchFan fan;
+  setup_fan(fan);
+  fan.state = true;
+
+  for (auto _ : state) {
+    for (int i = 0; i < kInnerIterations; i++) {
+      int speed = (i % 6) + 1;
+      fan.make_call().set_speed(speed).perform();
+    }
+    benchmark::DoNotOptimize(fan.speed);
+  }
+  state.SetItemsProcessed(state.iterations() * kInnerIterations);
+}
+BENCHMARK(FanCall_SetSpeed);
+
+// --- FanCall::perform() with multiple fields ---
+// Exercises the validation path with state, speed, oscillation, and direction.
+
+static void FanCall_MultiField(benchmark::State &state) {
+  BenchFan fan;
+  setup_fan(fan);
+
+  for (auto _ : state) {
+    for (int i = 0; i < kInnerIterations; i++) {
+      auto dir = (i % 2 == 0) ? fan::FanDirection::FORWARD : fan::FanDirection::REVERSE;
+      int speed = (i % 6) + 1;
+      fan.make_call().set_state(true).set_speed(speed).set_oscillating(i % 2 == 0).set_direction(dir).perform();
+    }
+    benchmark::DoNotOptimize(fan.state);
+  }
+  state.SetItemsProcessed(state.iterations() * kInnerIterations);
+}
+BENCHMARK(FanCall_MultiField);
+
+}  // namespace esphome::benchmarks
diff --git a/tests/benchmarks/components/fan/benchmark.yaml b/tests/benchmarks/components/fan/benchmark.yaml
new file mode 100644
index 0000000000..e9d59c12b2
--- /dev/null
+++ b/tests/benchmarks/components/fan/benchmark.yaml
@@ -0,0 +1 @@
+fan:
diff --git a/tests/benchmarks/components/light/__init__.py b/tests/benchmarks/components/light/__init__.py
new file mode 100644
index 0000000000..233a3c246e
--- /dev/null
+++ b/tests/benchmarks/components/light/__init__.py
@@ -0,0 +1,28 @@
+import esphome.codegen as cg
+from esphome.components.light import generate_gamma_table
+from tests.testing_helpers import ComponentManifestOverride
+
+
+def override_manifest(manifest: ComponentManifestOverride) -> None:
+    # Light benchmarks need USE_LIGHT_GAMMA_LUT defined and a gamma table
+    # with external linkage that the benchmark .cpp can reference.
+    manifest.enable_codegen()
+    original_to_code = manifest.to_code
+
+    async def to_code(config):
+        await original_to_code(config)
+        cg.add_define("USE_LIGHT_GAMMA_LUT")
+        # Use the light component's own generate_gamma_table() so the
+        # benchmark stays in sync with any formula changes.
+        forward = generate_gamma_table(2.8)
+        values = ", ".join(f"0x{int(v):04X}" for v in forward)
+        # Use extern-visible (non-static) array so the benchmark .cpp
+        # can reference it via extern declaration.
+        cg.add_global(
+            cg.RawStatement(
+                f"extern const uint16_t bench_gamma_2_8_fwd[256] PROGMEM = {{{values}}};"
+            )
+        )
+
+    to_code.priority = original_to_code.priority
+    manifest.to_code = to_code
diff --git a/tests/benchmarks/components/light/bench_light_call.cpp b/tests/benchmarks/components/light/bench_light_call.cpp
new file mode 100644
index 0000000000..c1ef0c425e
--- /dev/null
+++ b/tests/benchmarks/components/light/bench_light_call.cpp
@@ -0,0 +1,253 @@
+#include <benchmark/benchmark.h>
+
+#include "esphome/components/light/light_output.h"
+#include "esphome/components/light/light_state.h"
+
+// Gamma 2.8 forward LUT generated by the light component's Python codegen
+// (see tests/benchmarks/components/light/__init__.py which calls generate_gamma_table())
+extern const uint16_t bench_gamma_2_8_fwd[256];
+
+namespace esphome::benchmarks {
+
+// Inner iteration count to amortize CodSpeed instrumentation overhead.
+static constexpr int kInnerIterations = 2000;
+
+// Minimal LightOutput for benchmarking — no real hardware interaction.
+class BenchLightOutput : public light::LightOutput {
+ public:
+  light::LightTraits get_traits() override { return this->traits_; }
+  void write_state(light::LightState * /*state*/) override {}
+
+  light::LightTraits traits_;
+};
+
+// Test subclass to access protected configure_entity_() for benchmark setup.
+class TestLightState : public light::LightState {
+ public:
+  using LightState::LightState;
+  void configure(const char *name) { this->configure_entity_(name, 0x12345678, 0); }
+};
+
+// Helper to create a configured RGBWW light state for benchmarks.
+// Note: setup() is not called (no preferences backend), so save_remote_values_()
+// is effectively a no-op. This benchmarks the call/validation path, not persistence.
+static void setup_rgbww_light(BenchLightOutput &output, TestLightState &light) {
+  output.traits_.set_supported_color_modes({light::ColorMode::RGB_COLD_WARM_WHITE});
+  output.traits_.set_min_mireds(153.0f);
+  output.traits_.set_max_mireds(500.0f);
+  light.configure("test_light");
+  light.set_default_transition_length(0);
+  light.set_gamma_correct(2.8f);
+  light.set_gamma_table(bench_gamma_2_8_fwd);
+  light.set_restore_mode(light::LIGHT_ALWAYS_OFF);
+}
+
+// --- LightCall::perform() with instant RGB color change (Home Assistant API path) ---
+// Measures the full call path: validation, set_immediately_, publish, and save.
+// HA sends color_mode explicitly since API 1.6.
+
+static void LightCall_RGBInstant(benchmark::State &state) {
+  BenchLightOutput output;
+  TestLightState light(&output);
+  setup_rgbww_light(output, light);
+
+  // Turn on first so subsequent calls are color changes
+  light.make_call().set_state(true).set_brightness(1.0f).set_color_brightness(1.0f).set_transition_length(0).perform();
+
+  for (auto _ : state) {
+    for (int i = 0; i < kInnerIterations; i++) {
+      float v = static_cast<float>(i % 256) / 255.0f;
+      light.make_call()
+          .set_color_mode(light::ColorMode::RGB_COLD_WARM_WHITE)
+          .set_red(v)
+          .set_green(1.0f - v)
+          .set_blue(v * 0.5f)
+          .set_transition_length(0)
+          .perform();
+    }
+    benchmark::DoNotOptimize(light.remote_values);
+  }
+  state.SetItemsProcessed(state.iterations() * kInnerIterations);
+}
+BENCHMARK(LightCall_RGBInstant);
+
+// --- LightCall::perform() turn on/off cycle (Home Assistant API path) ---
+// HA sends color_mode explicitly since API 1.6, skipping compute_color_mode_().
+
+static void LightCall_ToggleOnOff(benchmark::State &state) {
+  BenchLightOutput output;
+  TestLightState light(&output);
+  setup_rgbww_light(output, light);
+
+  for (auto _ : state) {
+    for (int i = 0; i < kInnerIterations; i++) {
+      light.make_call()
+          .set_state(i % 2 == 0)
+          .set_color_mode(light::ColorMode::RGB_COLD_WARM_WHITE)
+          .set_transition_length(0)
+          .perform();
+    }
+    benchmark::DoNotOptimize(light.remote_values);
+  }
+  state.SetItemsProcessed(state.iterations() * kInnerIterations);
+}
+BENCHMARK(LightCall_ToggleOnOff);
+
+// --- LightCall::perform() turn on/off via MQTT ---
+// MQTT never sends color_mode, so compute_color_mode_() runs every call.
+
+static void LightCall_ToggleOnOff_MQTT(benchmark::State &state) {
+  BenchLightOutput output;
+  TestLightState light(&output);
+  setup_rgbww_light(output, light);
+
+  for (auto _ : state) {
+    for (int i = 0; i < kInnerIterations; i++) {
+      light.make_call().set_state(i % 2 == 0).set_transition_length(0).perform();
+    }
+    benchmark::DoNotOptimize(light.remote_values);
+  }
+  state.SetItemsProcessed(state.iterations() * kInnerIterations);
+}
+BENCHMARK(LightCall_ToggleOnOff_MQTT);
+
+// --- LightCall::perform() with color temperature via MQTT ---
+// Exercises the transform_parameters_() path that converts color_temperature
+// to cold/warm white fractions. MQTT never sends color_mode, so this also
+// hits compute_color_mode_() every call. Modern HA avoids this path entirely
+// by converting color temp to CW/WW client-side.
+
+static void LightCall_ColorTemperature_MQTT(benchmark::State &state) {
+  BenchLightOutput output;
+  TestLightState light(&output);
+  setup_rgbww_light(output, light);
+
+  light.make_call().set_state(true).set_brightness(1.0f).set_transition_length(0).perform();
+
+  for (auto _ : state) {
+    for (int i = 0; i < kInnerIterations; i++) {
+      // Sweep through color temperature range
+      float ct = 153.0f + static_cast<float>(i % 348);
+      light.make_call().set_color_temperature(ct).set_transition_length(0).perform();
+    }
+    benchmark::DoNotOptimize(light.remote_values);
+  }
+  state.SetItemsProcessed(state.iterations() * kInnerIterations);
+}
+BENCHMARK(LightCall_ColorTemperature_MQTT);
+
+// --- LightCall::perform() with 1s transition (Home Assistant API path) ---
+// Exercises start_transition_() which allocates a LightTransformer.
+// This is the default HA path when transition_length > 0.
+
+static void LightCall_Transition(benchmark::State &state) {
+  BenchLightOutput output;
+  TestLightState light(&output);
+  setup_rgbww_light(output, light);
+
+  light.make_call().set_state(true).set_brightness(1.0f).set_transition_length(0).perform();
+
+  for (auto _ : state) {
+    for (int i = 0; i < kInnerIterations; i++) {
+      float v = static_cast<float>(i % 256) / 255.0f;
+      light.make_call()
+          .set_color_mode(light::ColorMode::RGB_COLD_WARM_WHITE)
+          .set_red(v)
+          .set_green(1.0f - v)
+          .set_blue(v * 0.5f)
+          .set_transition_length(1000)
+          .perform();
+    }
+    benchmark::DoNotOptimize(light.remote_values);
+  }
+  state.SetItemsProcessed(state.iterations() * kInnerIterations);
+}
+BENCHMARK(LightCall_Transition);
+
+// --- LightCall::perform() with cold/warm white (Home Assistant API path) ---
+// Mirrors what modern HA sends: explicit color_mode with direct cold_white
+// and warm_white values. HA converts color temp to CW/WW client-side for
+// CWWW lights (API >= 1.6), so this is the primary HA path.
+
+static void LightCall_ColdWarmWhite(benchmark::State &state) {
+  BenchLightOutput output;
+  TestLightState light(&output);
+  setup_rgbww_light(output, light);
+
+  light.make_call().set_state(true).set_brightness(1.0f).set_transition_length(0).perform();
+
+  for (auto _ : state) {
+    for (int i = 0; i < kInnerIterations; i++) {
+      float frac = static_cast<float>(i % 256) / 255.0f;
+      light.make_call()
+          .set_color_mode(light::ColorMode::RGB_COLD_WARM_WHITE)
+          .set_cold_white(1.0f - frac)
+          .set_warm_white(frac)
+          .set_transition_length(0)
+          .perform();
+    }
+    benchmark::DoNotOptimize(light.remote_values);
+  }
+  state.SetItemsProcessed(state.iterations() * kInnerIterations);
+}
+BENCHMARK(LightCall_ColdWarmWhite);
+
+// --- LightState::publish_state() with a remote values listener ---
+// Measures listener notification overhead.
+
+static void LightPublish_WithListener(benchmark::State &state) {
+  BenchLightOutput output;
+  TestLightState light(&output);
+  setup_rgbww_light(output, light);
+
+  struct TestListener : public light::LightRemoteValuesListener {
+    void on_light_remote_values_update() override { count_++; }
+    uint64_t count_{0};
+  } listener;
+  light.add_remote_values_listener(&listener);
+
+  for (auto _ : state) {
+    for (int i = 0; i < kInnerIterations; i++) {
+      light.publish_state();
+    }
+    benchmark::DoNotOptimize(listener.count_);
+  }
+  state.SetItemsProcessed(state.iterations() * kInnerIterations);
+}
+BENCHMARK(LightPublish_WithListener);
+
+// --- current_values_as_rgbww output conversion with gamma LUT ---
+// Measures the output conversion path that real light drivers call
+// from write_state() to get hardware PWM values, including gamma
+// table lookups via the LUT generated by Python codegen.
+
+static void LightOutput_RGBWW(benchmark::State &state) {
+  BenchLightOutput output;
+  TestLightState light(&output);
+  setup_rgbww_light(output, light);
+
+  light.make_call()
+      .set_state(true)
+      .set_brightness(0.8f)
+      .set_color_brightness(0.6f)
+      .set_red(1.0f)
+      .set_green(0.5f)
+      .set_blue(0.2f)
+      .set_cold_white(0.7f)
+      .set_warm_white(0.3f)
+      .set_transition_length(0)
+      .perform();
+
+  float r, g, b, cw, ww;
+  for (auto _ : state) {
+    for (int i = 0; i < kInnerIterations; i++) {
+      light.current_values_as_rgbww(&r, &g, &b, &cw, &ww);
+    }
+    benchmark::DoNotOptimize(r);
+    benchmark::DoNotOptimize(cw);
+  }
+  state.SetItemsProcessed(state.iterations() * kInnerIterations);
+}
+BENCHMARK(LightOutput_RGBWW);
+
+}  // namespace esphome::benchmarks
diff --git a/tests/benchmarks/components/light/benchmark.yaml b/tests/benchmarks/components/light/benchmark.yaml
new file mode 100644
index 0000000000..2b7c938581
--- /dev/null
+++ b/tests/benchmarks/components/light/benchmark.yaml
@@ -0,0 +1 @@
+light:
diff --git a/tests/component_tests/font/.gitattributes b/tests/component_tests/font/.gitattributes
new file mode 100644
index 0000000000..4df6726184
--- /dev/null
+++ b/tests/component_tests/font/.gitattributes
@@ -0,0 +1,2 @@
+*.pcf -text
+*.ttf -text
diff --git a/tests/component_tests/font/NotoSans-Regular.ttf b/tests/component_tests/font/NotoSans-Regular.ttf
new file mode 100644
index 0000000000..a1b8994ede
Binary files /dev/null and b/tests/component_tests/font/NotoSans-Regular.ttf differ
diff --git a/tests/component_tests/font/__init__.py b/tests/component_tests/font/__init__.py
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/tests/component_tests/font/test_font.py b/tests/component_tests/font/test_font.py
new file mode 100644
index 0000000000..55e27ae84c
--- /dev/null
+++ b/tests/component_tests/font/test_font.py
@@ -0,0 +1,337 @@
+"""Tests for the font component.
+
+Focuses on verifying that long multi-byte (Chinese/CJK) glyph strings
+are correctly processed through the font configuration pipeline.
+"""
+
+import functools
+from pathlib import Path
+from unittest.mock import MagicMock, patch
+
+import pytest
+
+from esphome.components.font import (
+    CONF_BPP,
+    CONF_EXTRAS,
+    CONF_GLYPHSETS,
+    CONF_IGNORE_MISSING_GLYPHS,
+    CONF_RAW_GLYPH_ID,
+    FONT_CACHE,
+    flatten,
+    glyph_comparator,
+    to_code,
+    validate_font_config,
+)
+import esphome.config_validation as cv
+from esphome.const import (
+    CONF_FILE,
+    CONF_GLYPHS,
+    CONF_ID,
+    CONF_PATH,
+    CONF_RAW_DATA_ID,
+    CONF_SIZE,
+    CONF_TYPE,
+)
+
+FONT_DIR = Path(__file__).parent
+FONT_PATH = FONT_DIR / "NotoSans-Regular.ttf"
+
+# 200 unique CJK Unified Ideograph characters (U+4E00..U+4EC7)
+CHINESE_200 = "".join(chr(cp) for cp in range(0x4E00, 0x4EC8))
+
+
+def _file_conf() -> dict:
+    return {CONF_PATH: str(FONT_PATH), CONF_TYPE: "local"}
+
+
+def _make_config(
+    glyphs: list[str],
+    *,
+    ignore_missing: bool = False,
+    size: int = 20,
+    bpp: int = 1,
+    extras: list | None = None,
+    glyphsets: list | None = None,
+) -> dict:
+    """Build a config dict matching what FONT_SCHEMA produces."""
+    return {
+        CONF_FILE: _file_conf(),
+        CONF_GLYPHS: glyphs,
+        CONF_GLYPHSETS: glyphsets or [],
+        CONF_IGNORE_MISSING_GLYPHS: ignore_missing,
+        CONF_SIZE: size,
+        CONF_BPP: bpp,
+        CONF_EXTRAS: extras or [],
+    }
+
+
+@pytest.fixture(autouse=True)
+def _load_font():
+    """Load the test font into FONT_CACHE and clean up afterwards."""
+    fc = _file_conf()
+    FONT_CACHE[fc] = FONT_PATH
+    yield
+    FONT_CACHE.store.clear()
+
+
+# ---------- flatten / glyph_comparator helpers ----------
+
+
+def test_flatten_splits_chinese_string_into_chars():
+    """A single string of 200 Chinese characters must become 200 individual chars."""
+    result = flatten([CHINESE_200])
+    assert len(result) == 200
+    assert all(len(c) == 1 for c in result)
+    assert result[0] == "\u4e00"
+    assert result[-1] == "\u4ec7"
+
+
+def test_flatten_multiple_chinese_strings():
+    """Multiple glyph strings are concatenated then split correctly."""
+    s1 = CHINESE_200[:100]
+    s2 = CHINESE_200[100:]
+    result = flatten([list(s1), list(s2)])
+    assert len(result) == 200
+
+
+def test_glyph_comparator_orders_chinese_by_utf8():
+    """glyph_comparator must order CJK characters by their UTF-8 byte sequence."""
+    chars = list(CHINESE_200[:10])
+    sorted_chars = sorted(chars, key=functools.cmp_to_key(glyph_comparator))
+    # CJK block is contiguous and UTF-8 order matches codepoint order here
+    assert sorted_chars == chars
+
+
+def test_glyph_comparator_mixed_ascii_and_chinese():
+    """ASCII characters sort before CJK characters (lower UTF-8 bytes)."""
+    assert glyph_comparator("A", "\u4e00") == -1
+    assert glyph_comparator("\u4e00", "A") == 1
+    assert glyph_comparator("\u4e00", "\u4e00") == 0
+
+
+# ---------- validate_font_config ----------
+
+
+def test_long_chinese_glyphs_raises_missing_error():
+    """200 Chinese chars not present in NotoSans must raise Invalid with the correct count."""
+    config = _make_config([CHINESE_200])
+    with pytest.raises(cv.Invalid, match=r"missing 200 glyphs"):
+        validate_font_config(config)
+
+
+def test_long_chinese_glyphs_error_mentions_overflow():
+    """When more than 10 glyphs are missing the error should mention the remainder."""
+    config = _make_config([CHINESE_200])
+    with pytest.raises(cv.Invalid, match=r"and 190 more"):
+        validate_font_config(config)
+
+
+def test_duplicate_chinese_glyphs_detected():
+    """Duplicate CJK characters within a single glyph string must be caught."""
+    duped = "\u4e00\u4e01\u4e00"  # first char repeated
+    config = _make_config([duped])
+    with pytest.raises(cv.Invalid, match="duplicate"):
+        validate_font_config(config)
+
+
+def test_duplicate_chinese_across_strings():
+    """Duplicates across separate glyph strings are also caught."""
+    config = _make_config(["\u4e00\u4e01", "\u4e01\u4e02"])
+    with pytest.raises(cv.Invalid, match="duplicate"):
+        validate_font_config(config)
+
+
+def test_no_false_duplicates_in_200_unique_chinese():
+    """200 unique CJK characters must not trigger the duplicate check."""
+    config = _make_config([CHINESE_200])
+    # Should not raise duplicate error — it should reach the missing-glyph check instead
+    with pytest.raises(cv.Invalid, match="missing"):
+        validate_font_config(config)
+
+
+def test_valid_latin_glyphs_pass_validation():
+    """Latin characters present in NotoSans-Regular pass validation without error."""
+    config = _make_config(["ABCabc123"])
+    result = validate_font_config(config)
+    assert result is not None
+    assert result[CONF_SIZE] == 20
+
+
+def test_long_latin_glyphs_pass_validation():
+    """A long string of supported Latin glyphs passes validation."""
+    # 95 printable ASCII characters that NotoSans supports
+    latin = "".join(chr(cp) for cp in range(0x21, 0x7F))
+    config = _make_config([latin])
+    result = validate_font_config(config)
+    assert result is not None
+
+
+def test_mixed_latin_and_chinese_glyphs_error():
+    """Mixing valid Latin and invalid Chinese chars reports missing Chinese glyphs."""
+    chinese_10 = CHINESE_200[:10]
+    config = _make_config(["ABC", chinese_10])
+    with pytest.raises(cv.Invalid, match=r"missing 10 glyphs"):
+        validate_font_config(config)
+
+
+def test_single_chinese_char_glyph():
+    """A single Chinese character is correctly handled as one glyph."""
+    config = _make_config(["\u4e00"])
+    with pytest.raises(cv.Invalid, match=r"missing 1 glyph[^s]"):
+        validate_font_config(config)
+
+
+def test_chinese_glyphs_as_individual_list_items():
+    """Chinese chars provided as separate list items are handled the same as a single string."""
+    chars_as_list = list(CHINESE_200[:50])
+    config = _make_config(chars_as_list)
+    with pytest.raises(cv.Invalid, match=r"missing 50 glyphs"):
+        validate_font_config(config)
+
+
+# ---------- YAML parsing ----------
+
+
+def test_yaml_long_latin_glyphs_parsed_and_validated(tmp_path):
+    """200 Latin Extended chars on a single YAML line are parsed intact and pass validation."""
+    from esphome.yaml_util import load_yaml
+
+    latin_long = "".join(chr(cp) for cp in range(0x100, 0x1C8))
+    yaml_file = tmp_path / "font_test.yaml"
+    yaml_file.write_text(
+        f'font:\n  - file: "NotoSans-Regular.ttf"\n    glyphs: "{latin_long}"\n',
+        encoding="utf-8",
+    )
+
+    parsed = load_yaml(yaml_file)
+    raw_glyphs = parsed["font"][0]["glyphs"]
+
+    # YAML must preserve every Unicode character on the single line
+    assert raw_glyphs == latin_long
+    assert len(raw_glyphs) == 200
+
+    # Feed through validate_font_config to confirm all glyphs are accepted
+    config = _make_config([raw_glyphs])
+    result = validate_font_config(config)
+    assert result is not None
+
+
+@pytest.mark.parametrize(
+    "glyphs_str",
+    [
+        " ABC",  # space at start
+        "AB CD",  # space in middle
+        "ABC ",  # space at end
+    ],
+    ids=["start", "middle", "end"],
+)
+def test_yaml_space_in_glyphs_preserved(tmp_path, glyphs_str):
+    """A space character in a glyphs string must survive YAML round-trip and validation."""
+    from esphome.yaml_util import load_yaml
+
+    yaml_file = tmp_path / "font_test.yaml"
+    yaml_file.write_text(
+        f'font:\n  - file: "NotoSans-Regular.ttf"\n    glyphs: "{glyphs_str}"\n',
+        encoding="utf-8",
+    )
+
+    parsed = load_yaml(yaml_file)
+    raw_glyphs = parsed["font"][0]["glyphs"]
+
+    assert raw_glyphs == glyphs_str
+    assert " " in raw_glyphs
+
+    # Space and ASCII letters are all in NotoSans — validation must pass
+    config = _make_config([raw_glyphs])
+    result = validate_font_config(config)
+    assert result is not None
+
+
+# ---------- to_code generation ----------
+
+
+# 200 unique Latin Extended characters (U+0100..U+01C7), all present in NotoSans
+LATIN_LONG = "".join(chr(cp) for cp in range(0x100, 0x1C8))
+
+
+@pytest.fixture
+def mock_cg():
+    """Mock all cg codegen functions used by to_code."""
+    with (
+        patch("esphome.components.font.cg.add_define") as mock_define,
+        patch("esphome.components.font.cg.progmem_array") as mock_progmem,
+        patch("esphome.components.font.cg.static_const_array") as mock_static,
+        patch("esphome.components.font.cg.new_Pvariable") as mock_new_pvar,
+    ):
+        mock_progmem.return_value = MagicMock()
+        mock_static.return_value = MagicMock()
+        yield {
+            "add_define": mock_define,
+            "progmem_array": mock_progmem,
+            "static_const_array": mock_static,
+            "new_Pvariable": mock_new_pvar,
+        }
+
+
+@pytest.mark.asyncio
+async def test_to_code_long_latin_generates_all_glyphs(mock_cg):
+    """to_code must generate glyph data for every character in a long Latin string."""
+    glyph_count = len(LATIN_LONG)  # 200
+    config = _make_config([LATIN_LONG])
+    config[CONF_ID] = MagicMock()
+    config[CONF_RAW_DATA_ID] = MagicMock()
+    config[CONF_RAW_GLYPH_ID] = MagicMock()
+
+    await to_code(config)
+
+    # USE_FONT define must be emitted
+    mock_cg["add_define"].assert_any_call("USE_FONT")
+
+    # progmem_array receives the combined bitmap data (non-empty)
+    mock_cg["progmem_array"].assert_called_once()
+    bitmap_data = mock_cg["progmem_array"].call_args.args[1]
+    assert len(bitmap_data) > 0
+
+    # static_const_array receives one entry per unique glyph
+    mock_cg["static_const_array"].assert_called_once()
+    glyph_initializer = mock_cg["static_const_array"].call_args.args[1]
+    assert len(glyph_initializer) == glyph_count
+
+    # new_Pvariable is called with the correct glyph count
+    mock_cg["new_Pvariable"].assert_called_once()
+    pvar_args = mock_cg["new_Pvariable"].call_args.args
+    assert pvar_args[2] == glyph_count  # len(glyph_initializer)
+    assert pvar_args[8] == 1  # bpp
+
+
+@pytest.mark.asyncio
+async def test_to_code_glyph_entries_contain_expected_fields(mock_cg):
+    """Each glyph initializer entry must have 7 fields: codepoint, data ptr, advance, offset_x, offset_y, w, h."""
+    config = _make_config([LATIN_LONG])
+    config[CONF_ID] = MagicMock()
+    config[CONF_RAW_DATA_ID] = MagicMock()
+    config[CONF_RAW_GLYPH_ID] = MagicMock()
+
+    await to_code(config)
+
+    glyph_initializer = mock_cg["static_const_array"].call_args.args[1]
+    for entry in glyph_initializer:
+        assert len(entry) == 7, f"Glyph entry should have 7 fields, got {len(entry)}"
+        codepoint = entry[0]
+        assert isinstance(codepoint, int)
+        assert 0x100 <= codepoint <= 0x1C7
+
+
+@pytest.mark.asyncio
+async def test_to_code_glyphs_sorted_by_utf8(mock_cg):
+    """Glyphs in the initializer must be sorted by UTF-8 byte order."""
+    config = _make_config([LATIN_LONG])
+    config[CONF_ID] = MagicMock()
+    config[CONF_RAW_DATA_ID] = MagicMock()
+    config[CONF_RAW_GLYPH_ID] = MagicMock()
+
+    await to_code(config)
+
+    glyph_initializer = mock_cg["static_const_array"].call_args.args[1]
+    codepoints = [entry[0] for entry in glyph_initializer]
+    assert codepoints == sorted(codepoints)
diff --git a/tests/component_tests/light/__init__.py b/tests/component_tests/light/__init__.py
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/tests/component_tests/light/test_effect_validation.py b/tests/component_tests/light/test_effect_validation.py
new file mode 100644
index 0000000000..579e92c62a
--- /dev/null
+++ b/tests/component_tests/light/test_effect_validation.py
@@ -0,0 +1,280 @@
+"""Tests for light effect name validation."""
+
+from __future__ import annotations
+
+from collections.abc import Generator
+from contextvars import Token
+
+import pytest
+
+from esphome import config_validation as cv
+from esphome.components.light import (
+    EffectRef,
+    _final_validate,
+    _get_data,
+    available_effects_str,
+    find_effect_index,
+)
+from esphome.components.light.automation import _record_effect_ref
+from esphome.config import Config, path_context
+from esphome.const import CONF_EFFECT, CONF_EFFECTS, CONF_ID, CONF_NAME
+from esphome.core import ID, Lambda
+import esphome.final_validate as fv
+from esphome.types import ConfigType
+
+
+def _make_effects(*names: str) -> list[dict[str, dict[str, str]]]:
+    """Create a list of effect config dicts from names."""
+    return [{f"effect_{i}": {CONF_NAME: name}} for i, name in enumerate(names)]
+
+
+# --- find_effect_index ---
+
+
+def test_find_effect_index_found() -> None:
+    effects = _make_effects("Fast Pulse", "Slow Pulse")
+    assert find_effect_index(effects, "Fast Pulse") == 1
+    assert find_effect_index(effects, "Slow Pulse") == 2
+
+
+def test_find_effect_index_case_insensitive() -> None:
+    effects = _make_effects("Fast Pulse")
+    assert find_effect_index(effects, "fast pulse") == 1
+    assert find_effect_index(effects, "FAST PULSE") == 1
+
+
+def test_find_effect_index_not_found() -> None:
+    effects = _make_effects("Fast Pulse", "Slow Pulse")
+    assert find_effect_index(effects, "Missing") is None
+
+
+def test_find_effect_index_empty() -> None:
+    assert find_effect_index([], "anything") is None
+
+
+# --- available_effects_str ---
+
+
+def test_available_effects_str_multiple() -> None:
+    effects = _make_effects("Fast Pulse", "Slow Pulse")
+    assert available_effects_str(effects) == "'Fast Pulse', 'Slow Pulse'"
+
+
+def test_available_effects_str_single() -> None:
+    effects = _make_effects("Fast Pulse")
+    assert available_effects_str(effects) == "'Fast Pulse'"
+
+
+def test_available_effects_str_empty() -> None:
+    assert available_effects_str([]) == "none"
+
+
+# --- _final_validate ---
+
+
+def _setup_final_validate(
+    effect_refs: list[EffectRef],
+    light_configs: list[ConfigType],
+    declare_ids: list[tuple[ID, list[str | int]]],
+) -> Token:
+    """Set up CORE.data and fv.full_config for _final_validate tests."""
+    data = _get_data()
+    data.effect_refs = effect_refs
+
+    full_conf = Config()
+    full_conf["light"] = light_configs
+    for id_, path in declare_ids:
+        full_conf.declare_ids.append((id_, path))
+
+    return fv.full_config.set(full_conf)
+
+
+def test_final_validate_valid_effect() -> None:
+    """Valid effect name should not raise."""
+    light_id = ID("led1", is_declaration=True)
+    token = _setup_final_validate(
+        effect_refs=[
+            EffectRef(
+                light_id=light_id, effect_name="Fast Pulse", component_path=["esphome"]
+            ),
+        ],
+        light_configs=[
+            {CONF_ID: light_id, CONF_EFFECTS: _make_effects("Fast Pulse", "Slow Pulse")}
+        ],
+        declare_ids=[(light_id, ["light", 0, CONF_ID])],
+    )
+    try:
+        _final_validate({})
+    finally:
+        fv.full_config.reset(token)
+
+
+def test_final_validate_invalid_effect_raises() -> None:
+    """Invalid effect name should raise FinalExternalInvalid."""
+    light_id = ID("led1", is_declaration=True)
+    token = _setup_final_validate(
+        effect_refs=[
+            EffectRef(
+                light_id=light_id, effect_name="Nonexistent", component_path=["esphome"]
+            ),
+        ],
+        light_configs=[
+            {CONF_ID: light_id, CONF_EFFECTS: _make_effects("Fast Pulse", "Slow Pulse")}
+        ],
+        declare_ids=[(light_id, ["light", 0, CONF_ID])],
+    )
+    try:
+        with pytest.raises(cv.FinalExternalInvalid, match="Nonexistent"):
+            _final_validate({})
+    finally:
+        fv.full_config.reset(token)
+
+
+def test_final_validate_lists_available_effects() -> None:
+    """Error message should list available effects."""
+    light_id = ID("led1", is_declaration=True)
+    token = _setup_final_validate(
+        effect_refs=[
+            EffectRef(
+                light_id=light_id, effect_name="Missing", component_path=["esphome"]
+            ),
+        ],
+        light_configs=[
+            {CONF_ID: light_id, CONF_EFFECTS: _make_effects("Fast Pulse", "Slow Pulse")}
+        ],
+        declare_ids=[(light_id, ["light", 0, CONF_ID])],
+    )
+    try:
+        with pytest.raises(cv.FinalExternalInvalid, match="'Fast Pulse', 'Slow Pulse'"):
+            _final_validate({})
+    finally:
+        fv.full_config.reset(token)
+
+
+def test_final_validate_no_effects_on_light() -> None:
+    """Light with no effects should report 'none' as available."""
+    light_id = ID("led1", is_declaration=True)
+    token = _setup_final_validate(
+        effect_refs=[
+            EffectRef(
+                light_id=light_id, effect_name="Missing", component_path=["esphome"]
+            ),
+        ],
+        light_configs=[{CONF_ID: light_id}],
+        declare_ids=[(light_id, ["light", 0, CONF_ID])],
+    )
+    try:
+        with pytest.raises(cv.FinalExternalInvalid, match="Available effects: none"):
+            _final_validate({})
+    finally:
+        fv.full_config.reset(token)
+
+
+def test_final_validate_no_refs_is_noop() -> None:
+    """No stored refs should pass without error."""
+    data = _get_data()
+    data.effect_refs = []
+    _final_validate({})
+
+
+def test_final_validate_unknown_light_id_skipped() -> None:
+    """Refs to unknown light IDs should be silently skipped."""
+    data = _get_data()
+    data.effect_refs = [
+        EffectRef(
+            light_id=ID("nonexistent", is_declaration=True),
+            effect_name="Missing",
+            component_path=["esphome"],
+        )
+    ]
+
+    full_conf = Config()
+    token = fv.full_config.set(full_conf)
+    try:
+        _final_validate({})
+    finally:
+        fv.full_config.reset(token)
+
+
+def test_final_validate_drains_refs() -> None:
+    """Refs should be drained after validation to avoid redundant runs."""
+    light_id = ID("led1", is_declaration=True)
+    token = _setup_final_validate(
+        effect_refs=[
+            EffectRef(
+                light_id=light_id, effect_name="Fast Pulse", component_path=["esphome"]
+            ),
+        ],
+        light_configs=[{CONF_ID: light_id, CONF_EFFECTS: _make_effects("Fast Pulse")}],
+        declare_ids=[(light_id, ["light", 0, CONF_ID])],
+    )
+    try:
+        _final_validate({})
+        assert _get_data().effect_refs == []
+    finally:
+        fv.full_config.reset(token)
+
+
+# --- _record_effect_ref ---
+
+
+@pytest.fixture
+def _path_ctx() -> Generator[None]:
+    """Set path_context for _record_effect_ref tests."""
+    token = path_context.set(["esphome"])
+    yield
+    path_context.reset(token)
+
+
+@pytest.mark.usefixtures("_path_ctx")
+def test_record_effect_ref_static() -> None:
+    """Static effect name should be recorded."""
+    light_id = ID("led1", is_declaration=True)
+    config: ConfigType = {CONF_ID: light_id, CONF_EFFECT: "Fast Pulse"}
+    result = _record_effect_ref(config)
+    assert result is config
+    data = _get_data()
+    assert len(data.effect_refs) == 1
+    assert data.effect_refs[0].effect_name == "Fast Pulse"
+    assert data.effect_refs[0].light_id is light_id
+    assert data.effect_refs[0].component_path == ["esphome"]
+
+
+@pytest.mark.usefixtures("_path_ctx")
+def test_record_effect_ref_skips_lambda() -> None:
+    """Lambda effect should not be recorded."""
+    config: ConfigType = {
+        CONF_ID: ID("led1", is_declaration=True),
+        CONF_EFFECT: Lambda("return effect;"),
+    }
+    _record_effect_ref(config)
+    assert _get_data().effect_refs == []
+
+
+@pytest.mark.usefixtures("_path_ctx")
+def test_record_effect_ref_skips_none() -> None:
+    """Effect 'None' should not be recorded."""
+    config: ConfigType = {
+        CONF_ID: ID("led1", is_declaration=True),
+        CONF_EFFECT: "None",
+    }
+    _record_effect_ref(config)
+    assert _get_data().effect_refs == []
+
+
+@pytest.mark.usefixtures("_path_ctx")
+def test_record_effect_ref_skips_none_case_insensitive() -> None:
+    """Effect 'none' (lowercase) should not be recorded."""
+    config: ConfigType = {
+        CONF_ID: ID("led1", is_declaration=True),
+        CONF_EFFECT: "none",
+    }
+    _record_effect_ref(config)
+    assert _get_data().effect_refs == []
+
+
+def test_record_effect_ref_skips_no_effect_key() -> None:
+    """Config without effect key should be a no-op."""
+    config: ConfigType = {CONF_ID: ID("led1", is_declaration=True)}
+    _record_effect_ref(config)
+    assert _get_data().effect_refs == []
diff --git a/tests/components/bmp581_spi/common.yaml b/tests/components/bmp581_spi/common.yaml
new file mode 100644
index 0000000000..f22074f867
--- /dev/null
+++ b/tests/components/bmp581_spi/common.yaml
@@ -0,0 +1,9 @@
+sensor:
+  - platform: bmp581_spi
+    cs_pin: ${cs_pin}
+    temperature:
+      name: BMP581 Temperature
+      iir_filter: 2x
+    pressure:
+      name: BMP581 Pressure
+      oversampling: 128x
diff --git a/tests/components/bmp581_spi/test.esp32-idf.yaml b/tests/components/bmp581_spi/test.esp32-idf.yaml
new file mode 100644
index 0000000000..a3352cf880
--- /dev/null
+++ b/tests/components/bmp581_spi/test.esp32-idf.yaml
@@ -0,0 +1,7 @@
+substitutions:
+  cs_pin: GPIO5
+
+packages:
+  spi: !include ../../test_build_components/common/spi/esp32-idf.yaml
+
+<<: !include common.yaml
diff --git a/tests/components/bmp581_spi/test.esp8266-ard.yaml b/tests/components/bmp581_spi/test.esp8266-ard.yaml
new file mode 100644
index 0000000000..595f31046a
--- /dev/null
+++ b/tests/components/bmp581_spi/test.esp8266-ard.yaml
@@ -0,0 +1,7 @@
+substitutions:
+  cs_pin: GPIO15
+
+packages:
+  spi: !include ../../test_build_components/common/spi/esp8266-ard.yaml
+
+<<: !include common.yaml
diff --git a/tests/components/bmp581_spi/test.rp2040-ard.yaml b/tests/components/bmp581_spi/test.rp2040-ard.yaml
new file mode 100644
index 0000000000..79ea6ce90b
--- /dev/null
+++ b/tests/components/bmp581_spi/test.rp2040-ard.yaml
@@ -0,0 +1,7 @@
+substitutions:
+  cs_pin: GPIO5
+
+packages:
+  spi: !include ../../test_build_components/common/spi/rp2040-ard.yaml
+
+<<: !include common.yaml
diff --git a/tests/components/font/.gitattributes b/tests/components/font/.gitattributes
index 63ab00e9f2..4df6726184 100644
--- a/tests/components/font/.gitattributes
+++ b/tests/components/font/.gitattributes
@@ -1 +1,2 @@
-*.pcf        -text
+*.pcf -text
+*.ttf -text
diff --git a/tests/unit_tests/test_automation.py b/tests/unit_tests/test_automation.py
index 61fef8201d..37779f23e6 100644
--- a/tests/unit_tests/test_automation.py
+++ b/tests/unit_tests/test_automation.py
@@ -5,7 +5,13 @@ from unittest.mock import patch
 
 import pytest
 
-from esphome.automation import has_non_synchronous_actions
+from esphome.automation import (
+    TriggerForwarder,
+    TriggerOnFalseForwarder,
+    TriggerOnTrueForwarder,
+    has_non_synchronous_actions,
+)
+from esphome.cpp_generator import MockObj, RawExpression
 from esphome.util import RegistryEntry
 
 
@@ -175,3 +181,76 @@ def test_has_non_synchronous_actions_dict_input(
     """Direct dict input (single action)."""
     assert has_non_synchronous_actions({"delay": "1s"}) is True
     assert has_non_synchronous_actions({"logger.log": "hello"}) is False
+
+
+def _build_forwarder(
+    automation_name: str,
+    args: list[tuple[str, str]],
+    forwarder: MockObj | None = None,
+) -> str:
+    """Build a trigger forwarder expression the same way build_callback_automation does.
+
+    Mirrors the forwarder selection logic in automation.build_callback_automation.
+    """
+    import esphome.codegen as cg
+
+    obj = MockObj(automation_name, "->")
+    if forwarder is None:
+        arg_types = [RawExpression(t) for t, _ in args]
+        templ = (
+            cg.TemplateArguments(*arg_types) if arg_types else cg.TemplateArguments()
+        )
+        forwarder = TriggerForwarder.template(templ)
+    return f"{forwarder}{{{obj}}}"
+
+
+def test_trigger_forwarder_no_args() -> None:
+    """Button on_press: TriggerForwarder<> with no args."""
+    result = _build_forwarder("auto_1", [])
+    assert result == "TriggerForwarder<>{auto_1}"
+
+
+def test_trigger_forwarder_single_float_arg() -> None:
+    """Sensor on_value: TriggerForwarder<float>."""
+    result = _build_forwarder("auto_1", [("float", "x")])
+    assert result == "TriggerForwarder<float>{auto_1}"
+
+
+def test_trigger_forwarder_single_bool_arg() -> None:
+    """Switch on_state: TriggerForwarder<bool>."""
+    result = _build_forwarder("auto_1", [("bool", "x")])
+    assert result == "TriggerForwarder<bool>{auto_1}"
+
+
+def test_trigger_forwarder_on_true() -> None:
+    """Binary_sensor on_press / switch on_turn_on: TriggerOnTrueForwarder."""
+    result = _build_forwarder("auto_1", [], forwarder=TriggerOnTrueForwarder)
+    assert result == "TriggerOnTrueForwarder{auto_1}"
+
+
+def test_trigger_forwarder_on_false() -> None:
+    """Binary_sensor on_release / switch on_turn_off: TriggerOnFalseForwarder."""
+    result = _build_forwarder("auto_1", [], forwarder=TriggerOnFalseForwarder)
+    assert result == "TriggerOnFalseForwarder{auto_1}"
+
+
+def test_trigger_forwarder_multiple_args() -> None:
+    """Binary_sensor on_state_change: TriggerForwarder with two args."""
+    result = _build_forwarder(
+        "auto_1",
+        [("optional<bool>", "x_previous"), ("optional<bool>", "x")],
+    )
+    assert result == "TriggerForwarder<optional<bool>, optional<bool>>{auto_1}"
+
+
+def test_trigger_forwarder_string_arg() -> None:
+    """Text_sensor on_value: TriggerForwarder<std::string>."""
+    result = _build_forwarder("auto_1", [("std::string", "x")])
+    assert result == "TriggerForwarder<std::string>{auto_1}"
+
+
+def test_trigger_forwarder_custom_type() -> None:
+    """Custom forwarder type passed directly."""
+    custom = MockObj("MyForwarder", "")
+    result = _build_forwarder("auto_1", [], forwarder=custom)
+    assert result == "MyForwarder{auto_1}"
diff --git a/tests/unit_tests/test_writer.py b/tests/unit_tests/test_writer.py
index 6ace38a7d7..940a394c08 100644
--- a/tests/unit_tests/test_writer.py
+++ b/tests/unit_tests/test_writer.py
@@ -990,6 +990,47 @@ def test_clean_all_ignores_empty_env_vars(
     assert marker.exists()
 
 
+@patch("esphome.writer.CORE")
+def test_clean_all_no_args_with_esphome_dir(
+    mock_core: MagicMock,
+    tmp_path: Path,
+    caplog: pytest.LogCaptureFixture,
+) -> None:
+    """Test clean_all with no args cleans .esphome in cwd."""
+    esphome_dir = tmp_path / ".esphome"
+    esphome_dir.mkdir()
+    (esphome_dir / "dummy.txt").write_text("x")
+
+    from esphome.writer import clean_all
+
+    with (
+        caplog.at_level("INFO"),
+        patch("esphome.writer.Path.cwd", return_value=tmp_path),
+    ):
+        clean_all([])
+
+    assert esphome_dir.exists()
+    assert not (esphome_dir / "dummy.txt").exists()
+
+
+@patch("esphome.writer.CORE")
+def test_clean_all_no_args_no_esphome_dir(
+    mock_core: MagicMock,
+    tmp_path: Path,
+    caplog: pytest.LogCaptureFixture,
+) -> None:
+    """Test clean_all with no args and no .esphome dir warns."""
+    from esphome.writer import clean_all
+
+    with (
+        caplog.at_level("WARNING"),
+        patch("esphome.writer.Path.cwd", return_value=tmp_path),
+    ):
+        clean_all([])
+
+    assert "No configuration files specified" in caplog.text
+
+
 @patch("esphome.writer.CORE")
 def test_clean_all(
     mock_core: MagicMock,