diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f4f7f8bd82..bb038cb8aa 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -466,7 +466,7 @@ jobs:
         with:
           python-version: ${{ env.DEFAULT_PYTHON }}
           cache-key: ${{ needs.common.outputs.cache-key }}
-      - uses: pre-commit/action@2c7b3805fd2a0fd8c1884dcaebf91fc102a13ecd # v3.0.1
+      - uses: esphome/action@43cd1109c09c544d97196f7730ee5b2e0cc6d81e # v3.0.1 fork with pinned actions/cache
         env:
           SKIP: pylint,clang-tidy-hash
       - uses: pre-commit-ci/lite-action@5d6cc0eb514c891a40562a58a8e71576c5c7fb43 # v1.1.0
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index 5453dae9a7..0a5fd68326 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -58,7 +58,7 @@ jobs:
 
       # Initializes the CodeQL tools for scanning.
       - name: Initialize CodeQL
-        uses: github/codeql-action/init@3599b3baa15b485a2e49ef411a7a4bb2452e7f93 # v3.30.5
+        uses: github/codeql-action/init@64d10c13136e1c5bce3e5fbde8d4906eeaafc885 # v3.30.6
         with:
           languages: ${{ matrix.language }}
           build-mode: ${{ matrix.build-mode }}
@@ -86,6 +86,6 @@ jobs:
           exit 1
 
       - name: Perform CodeQL Analysis
-        uses: github/codeql-action/analyze@3599b3baa15b485a2e49ef411a7a4bb2452e7f93 # v3.30.5
+        uses: github/codeql-action/analyze@64d10c13136e1c5bce3e5fbde8d4906eeaafc885 # v3.30.6
         with:
           category: "/language:${{matrix.language}}"
diff --git a/.github/workflows/stale.yml b/.github/workflows/stale.yml
index f57f0987ec..63a8ade37f 100644
--- a/.github/workflows/stale.yml
+++ b/.github/workflows/stale.yml
@@ -19,7 +19,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Stale
-        uses: actions/stale@3a9db7e6a41a89f618792c92c0e97cc736e1b13f # v10.0.0
+        uses: actions/stale@5f858e3efba33a5ca4407a664cc011ad407f2008 # v10.1.0
         with:
           debug-only: ${{ github.ref != 'refs/heads/dev' }} # Dry-run when not run on dev branch
           remove-stale-when-updated: true
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 818f360860..3c1b888cfd 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: v0.13.2
+    rev: v0.13.3
     hooks:
       # Run the linter.
       - id: ruff
diff --git a/esphome/__main__.py b/esphome/__main__.py
index 38edcb070f..b0f541f521 100644
--- a/esphome/__main__.py
+++ b/esphome/__main__.py
@@ -14,9 +14,11 @@ from typing import Protocol
 
 import argcomplete
 
+# Note: Do not import modules from esphome.components here, as this would
+# cause them to be loaded before external components are processed, resulting
+# in the built-in version being used instead of the external component one.
 from esphome import const, writer, yaml_util
 import esphome.codegen as cg
-from esphome.components.mqtt import CONF_DISCOVER_IP
 from esphome.config import iter_component_configs, read_config, strip_default_ids
 from esphome.const import (
     ALLOWED_NAME_CHARS,
@@ -240,6 +242,8 @@ def has_ota() -> bool:
 
 def has_mqtt_ip_lookup() -> bool:
     """Check if MQTT is available and IP lookup is supported."""
+    from esphome.components.mqtt import CONF_DISCOVER_IP
+
     if CONF_MQTT not in CORE.config:
         return False
     # Default Enabled
diff --git a/esphome/components/logger/logger.h b/esphome/components/logger/logger.h
index 55fcfad9d0..2099520049 100644
--- a/esphome/components/logger/logger.h
+++ b/esphome/components/logger/logger.h
@@ -366,9 +366,18 @@ class Logger : public Component {
     buffer[pos++] = '[';
     copy_string(buffer, pos, tag);
     buffer[pos++] = ':';
-    buffer[pos++] = '0' + (line / 100) % 10;
-    buffer[pos++] = '0' + (line / 10) % 10;
-    buffer[pos++] = '0' + line % 10;
+    // Format line number without modulo operations (passed by value, safe to mutate)
+    if (line > 999) [[unlikely]] {
+      int thousands = line / 1000;
+      buffer[pos++] = '0' + thousands;
+      line -= thousands * 1000;
+    }
+    int hundreds = line / 100;
+    int remainder = line - hundreds * 100;
+    int tens = remainder / 10;
+    buffer[pos++] = '0' + hundreds;
+    buffer[pos++] = '0' + tens;
+    buffer[pos++] = '0' + (remainder - tens * 10);
     buffer[pos++] = ']';
 
 #if defined(USE_ESP32) || defined(USE_LIBRETINY) || defined(USE_ZEPHYR)
diff --git a/esphome/components/logger/select/logger_level_select.cpp b/esphome/components/logger/select/logger_level_select.cpp
index d9c950ce3c..6d60a3ae47 100644
--- a/esphome/components/logger/select/logger_level_select.cpp
+++ b/esphome/components/logger/select/logger_level_select.cpp
@@ -3,11 +3,10 @@
 namespace esphome::logger {
 
 void LoggerLevelSelect::publish_state(int level) {
-  auto value = this->at(level);
-  if (!value) {
+  const auto &option = this->at(level_to_index(level));
+  if (!option)
     return;
-  }
-  Select::publish_state(value.value());
+  Select::publish_state(option.value());
 }
 
 void LoggerLevelSelect::setup() {
@@ -16,10 +15,10 @@ void LoggerLevelSelect::setup() {
 }
 
 void LoggerLevelSelect::control(const std::string &value) {
-  auto level = this->index_of(value);
-  if (!level)
+  const auto index = this->index_of(value);
+  if (!index)
     return;
-  this->parent_->set_log_level(level.value());
+  this->parent_->set_log_level(index_to_level(index.value()));
 }
 
 }  // namespace esphome::logger
diff --git a/esphome/components/logger/select/logger_level_select.h b/esphome/components/logger/select/logger_level_select.h
index f31a6f6cdb..0631eca45d 100644
--- a/esphome/components/logger/select/logger_level_select.h
+++ b/esphome/components/logger/select/logger_level_select.h
@@ -3,11 +3,18 @@
 #include "esphome/components/select/select.h"
 #include "esphome/core/component.h"
 #include "esphome/components/logger/logger.h"
+
 namespace esphome::logger {
 class LoggerLevelSelect : public Component, public select::Select, public Parented<Logger> {
  public:
   void publish_state(int level);
   void setup() override;
   void control(const std::string &value) override;
+
+ protected:
+  // Convert log level to option index (skip CONFIG at level 4)
+  static uint8_t level_to_index(uint8_t level) { return (level > ESPHOME_LOG_LEVEL_CONFIG) ? level - 1 : level; }
+  // Convert option index to log level (skip CONFIG at level 4)
+  static uint8_t index_to_level(uint8_t index) { return (index >= ESPHOME_LOG_LEVEL_CONFIG) ? index + 1 : index; }
 };
 }  // namespace esphome::logger
diff --git a/esphome/components/mpr121/mpr121.cpp b/esphome/components/mpr121/mpr121.cpp
index 074bc79ea2..60d8235b03 100644
--- a/esphome/components/mpr121/mpr121.cpp
+++ b/esphome/components/mpr121/mpr121.cpp
@@ -13,45 +13,46 @@ static const char *const TAG = "mpr121";
 void MPR121Component::setup() {
   // soft reset device
   this->write_byte(MPR121_SOFTRESET, 0x63);
-  delay(100);  // NOLINT
-  if (!this->write_byte(MPR121_ECR, 0x0)) {
-    this->error_code_ = COMMUNICATION_FAILED;
-    this->mark_failed();
-    return;
-  }
+  this->set_timeout(100, [this]() {
+    if (!this->write_byte(MPR121_ECR, 0x0)) {
+      this->error_code_ = COMMUNICATION_FAILED;
+      this->mark_failed();
+      return;
+    }
+    // set touch sensitivity for all 12 channels
+    for (auto *channel : this->channels_) {
+      channel->setup();
+    }
+    this->write_byte(MPR121_MHDR, 0x01);
+    this->write_byte(MPR121_NHDR, 0x01);
+    this->write_byte(MPR121_NCLR, 0x0E);
+    this->write_byte(MPR121_FDLR, 0x00);
 
-  // set touch sensitivity for all 12 channels
-  for (auto *channel : this->channels_) {
-    channel->setup();
-  }
-  this->write_byte(MPR121_MHDR, 0x01);
-  this->write_byte(MPR121_NHDR, 0x01);
-  this->write_byte(MPR121_NCLR, 0x0E);
-  this->write_byte(MPR121_FDLR, 0x00);
+    this->write_byte(MPR121_MHDF, 0x01);
+    this->write_byte(MPR121_NHDF, 0x05);
+    this->write_byte(MPR121_NCLF, 0x01);
+    this->write_byte(MPR121_FDLF, 0x00);
 
-  this->write_byte(MPR121_MHDF, 0x01);
-  this->write_byte(MPR121_NHDF, 0x05);
-  this->write_byte(MPR121_NCLF, 0x01);
-  this->write_byte(MPR121_FDLF, 0x00);
+    this->write_byte(MPR121_NHDT, 0x00);
+    this->write_byte(MPR121_NCLT, 0x00);
+    this->write_byte(MPR121_FDLT, 0x00);
 
-  this->write_byte(MPR121_NHDT, 0x00);
-  this->write_byte(MPR121_NCLT, 0x00);
-  this->write_byte(MPR121_FDLT, 0x00);
+    this->write_byte(MPR121_DEBOUNCE, 0);
+    // default, 16uA charge current
+    this->write_byte(MPR121_CONFIG1, 0x10);
+    // 0.5uS encoding, 1ms period
+    this->write_byte(MPR121_CONFIG2, 0x20);
 
-  this->write_byte(MPR121_DEBOUNCE, 0);
-  // default, 16uA charge current
-  this->write_byte(MPR121_CONFIG1, 0x10);
-  // 0.5uS encoding, 1ms period
-  this->write_byte(MPR121_CONFIG2, 0x20);
+    // Write the Electrode Configuration Register
+    // * Highest 2 bits is "Calibration Lock", which we set to a value corresponding to 5 bits.
+    // * The 2 bits below is "Proximity Enable" and are left at 0.
+    // * The 4 least significant bits control how many electrodes are enabled. Electrodes are enabled
+    //   as a range, starting at 0 up to the highest channel index used.
+    this->write_byte(MPR121_ECR, 0x80 | (this->max_touch_channel_ + 1));
 
-  // Write the Electrode Configuration Register
-  // * Highest 2 bits is "Calibration Lock", which we set to a value corresponding to 5 bits.
-  // * The 2 bits below is "Proximity Enable" and are left at 0.
-  // * The 4 least significant bits control how many electrodes are enabled. Electrodes are enabled
-  //   as a range, starting at 0 up to the highest channel index used.
-  this->write_byte(MPR121_ECR, 0x80 | (this->max_touch_channel_ + 1));
-
-  this->flush_gpio_();
+    this->flush_gpio_();
+    this->setup_complete_ = true;
+  });
 }
 
 void MPR121Component::set_touch_debounce(uint8_t debounce) {
@@ -73,15 +74,15 @@ void MPR121Component::dump_config() {
     case COMMUNICATION_FAILED:
       ESP_LOGE(TAG, ESP_LOG_MSG_COMM_FAIL);
       break;
-    case WRONG_CHIP_STATE:
-      ESP_LOGE(TAG, "MPR121 has wrong default value for CONFIG2?");
-      break;
     case NONE:
     default:
       break;
   }
 }
 void MPR121Component::loop() {
+  if (!this->setup_complete_)
+    return;
+
   uint16_t val = 0;
   this->read_byte_16(MPR121_TOUCHSTATUS_L, &val);
 
diff --git a/esphome/components/mpr121/mpr121.h b/esphome/components/mpr121/mpr121.h
index eb2e2edc57..8f942f3e98 100644
--- a/esphome/components/mpr121/mpr121.h
+++ b/esphome/components/mpr121/mpr121.h
@@ -80,6 +80,7 @@ class MPR121Component : public Component, public i2c::I2CDevice {
   void pin_mode(uint8_t ionum, gpio::Flags flags);
 
  protected:
+  bool setup_complete_{false};
   std::vector<MPR121Channel *> channels_{};
   uint8_t debounce_{0};
   uint8_t touch_threshold_{};
@@ -88,7 +89,6 @@ class MPR121Component : public Component, public i2c::I2CDevice {
   enum ErrorCode {
     NONE = 0,
     COMMUNICATION_FAILED,
-    WRONG_CHIP_STATE,
   } error_code_{NONE};
 
   bool flush_gpio_();
diff --git a/esphome/components/sps30/sps30.cpp b/esphome/components/sps30/sps30.cpp
index b99bf416d6..dc14e3a610 100644
--- a/esphome/components/sps30/sps30.cpp
+++ b/esphome/components/sps30/sps30.cpp
@@ -45,24 +45,26 @@ void SPS30Component::setup() {
     }
     ESP_LOGV(TAG, "  Serial number: %s", this->serial_number_);
 
-    bool result;
     if (this->fan_interval_.has_value()) {
       // override default value
-      result = this->write_command(SPS30_CMD_SET_AUTOMATIC_CLEANING_INTERVAL_SECONDS, this->fan_interval_.value());
+      this->result_ =
+          this->write_command(SPS30_CMD_SET_AUTOMATIC_CLEANING_INTERVAL_SECONDS, this->fan_interval_.value());
     } else {
-      result = this->write_command(SPS30_CMD_SET_AUTOMATIC_CLEANING_INTERVAL_SECONDS);
-    }
-    if (result) {
-      delay(20);
-      uint16_t secs[2];
-      if (this->read_data(secs, 2)) {
-        this->fan_interval_ = secs[0] << 16 | secs[1];
-      }
+      this->result_ = this->write_command(SPS30_CMD_SET_AUTOMATIC_CLEANING_INTERVAL_SECONDS);
     }
 
-    this->status_clear_warning();
-    this->skipped_data_read_cycles_ = 0;
-    this->start_continuous_measurement_();
+    this->set_timeout(20, [this]() {
+      if (this->result_) {
+        uint16_t secs[2];
+        if (this->read_data(secs, 2)) {
+          this->fan_interval_ = secs[0] << 16 | secs[1];
+        }
+      }
+      this->status_clear_warning();
+      this->skipped_data_read_cycles_ = 0;
+      this->start_continuous_measurement_();
+      this->setup_complete_ = true;
+    });
   });
 }
 
@@ -111,6 +113,8 @@ void SPS30Component::dump_config() {
 }
 
 void SPS30Component::update() {
+  if (!this->setup_complete_)
+    return;
   /// Check if warning flag active (sensor reconnected?)
   if (this->status_has_warning()) {
     ESP_LOGD(TAG, "Reconnecting");
diff --git a/esphome/components/sps30/sps30.h b/esphome/components/sps30/sps30.h
index 461a770ab6..cab5a075a0 100644
--- a/esphome/components/sps30/sps30.h
+++ b/esphome/components/sps30/sps30.h
@@ -30,9 +30,12 @@ class SPS30Component : public PollingComponent, public sensirion_common::Sensiri
   bool start_fan_cleaning();
 
  protected:
+  bool result_{false};
+  bool setup_complete_{false};
   uint16_t raw_firmware_version_;
   char serial_number_[17] = {0};  /// Terminating NULL character
   uint8_t skipped_data_read_cycles_ = 0;
+
   bool start_continuous_measurement_();
 
   enum ErrorCode : uint8_t {
diff --git a/esphome/const.py b/esphome/const.py
index ec583beeb6..7813b72bfa 100644
--- a/esphome/const.py
+++ b/esphome/const.py
@@ -1169,7 +1169,7 @@ UNIT_KILOMETER = "km"
 UNIT_KILOMETER_PER_HOUR = "km/h"
 UNIT_KILOVOLT_AMPS = "kVA"
 UNIT_KILOVOLT_AMPS_HOURS = "kVAh"
-UNIT_KILOVOLT_AMPS_REACTIVE = "kVAR"
+UNIT_KILOVOLT_AMPS_REACTIVE = "kvar"
 UNIT_KILOVOLT_AMPS_REACTIVE_HOURS = "kvarh"
 UNIT_KILOWATT = "kW"
 UNIT_KILOWATT_HOURS = "kWh"
diff --git a/requirements_test.txt b/requirements_test.txt
index 59ea77fd2d..f2be6f3a24 100644
--- a/requirements_test.txt
+++ b/requirements_test.txt
@@ -1,6 +1,6 @@
 pylint==3.3.8
 flake8==7.3.0  # also change in .pre-commit-config.yaml when updating
-ruff==0.13.2  # also change in .pre-commit-config.yaml when updating
+ruff==0.13.3  # also change in .pre-commit-config.yaml when updating
 pyupgrade==3.20.0  # also change in .pre-commit-config.yaml when updating
 pre-commit