diff --git a/Doxyfile b/Doxyfile
index 75c624bf2..532e20778 100644
--- a/Doxyfile
+++ b/Doxyfile
@@ -48,7 +48,7 @@ PROJECT_NAME           = ESPHome
 # could be handy for archiving the generated documentation or if some version
 # control system is used.
 
-PROJECT_NUMBER         = 2025.12.0b2
+PROJECT_NUMBER         = 2025.12.0b3
 
 # Using the PROJECT_BRIEF tag one can provide an optional one line description
 # for a project that appears at the top of each page and should give viewer a
diff --git a/esphome/components/captive_portal/captive_portal.cpp b/esphome/components/captive_portal/captive_portal.cpp
index 4eb00835b..e1f92d2d2 100644
--- a/esphome/components/captive_portal/captive_portal.cpp
+++ b/esphome/components/captive_portal/captive_portal.cpp
@@ -65,12 +65,6 @@ void CaptivePortal::start() {
   this->base_->init();
   if (!this->initialized_) {
     this->base_->add_handler(this);
-#ifdef USE_ESP32
-    // Enable LRU socket purging to handle captive portal detection probe bursts
-    // OS captive portal detection makes many simultaneous HTTP requests which can
-    // exhaust sockets. LRU purging automatically closes oldest idle connections.
-    this->base_->get_server()->set_lru_purge_enable(true);
-#endif
   }
 
   network::IPAddress ip = wifi::global_wifi_component->wifi_soft_ap_ip();
diff --git a/esphome/components/captive_portal/captive_portal.h b/esphome/components/captive_portal/captive_portal.h
index ae9b9dfba..f48c286f0 100644
--- a/esphome/components/captive_portal/captive_portal.h
+++ b/esphome/components/captive_portal/captive_portal.h
@@ -40,10 +40,6 @@ class CaptivePortal : public AsyncWebHandler, public Component {
   void end() {
     this->active_ = false;
     this->disable_loop();  // Stop processing DNS requests
-#ifdef USE_ESP32
-    // Disable LRU socket purging now that captive portal is done
-    this->base_->get_server()->set_lru_purge_enable(false);
-#endif
     this->base_->deinit();
     if (this->dns_server_ != nullptr) {
       this->dns_server_->stop();
diff --git a/esphome/components/cc1101/__init__.py b/esphome/components/cc1101/__init__.py
index e6b31b84f..1971817fb 100644
--- a/esphome/components/cc1101/__init__.py
+++ b/esphome/components/cc1101/__init__.py
@@ -1,9 +1,17 @@
-from esphome import automation
+from esphome import automation, pins
 from esphome.automation import maybe_simple_id
 import esphome.codegen as cg
 from esphome.components import spi
+from esphome.components.const import CONF_CRC_ENABLE, CONF_ON_PACKET
 import esphome.config_validation as cv
-from esphome.const import CONF_CHANNEL, CONF_FREQUENCY, CONF_ID, CONF_WAIT_TIME
+from esphome.const import (
+    CONF_CHANNEL,
+    CONF_DATA,
+    CONF_FREQUENCY,
+    CONF_ID,
+    CONF_WAIT_TIME,
+)
+from esphome.core import ID
 
 CODEOWNERS = ["@lygris", "@gabest11"]
 DEPENDENCIES = ["spi"]
@@ -29,7 +37,6 @@ CONF_MANCHESTER = "manchester"
 CONF_NUM_PREAMBLE = "num_preamble"
 CONF_SYNC1 = "sync1"
 CONF_SYNC0 = "sync0"
-CONF_PKTLEN = "pktlen"
 CONF_MAGN_TARGET = "magn_target"
 CONF_MAX_LNA_GAIN = "max_lna_gain"
 CONF_MAX_DVGA_GAIN = "max_dvga_gain"
@@ -41,6 +48,12 @@ CONF_FILTER_LENGTH_ASK_OOK = "filter_length_ask_ook"
 CONF_FREEZE = "freeze"
 CONF_HYST_LEVEL = "hyst_level"
 
+# Packet mode config keys
+CONF_PACKET_MODE = "packet_mode"
+CONF_PACKET_LENGTH = "packet_length"
+CONF_WHITENING = "whitening"
+CONF_GDO0_PIN = "gdo0_pin"
+
 # Enums
 SyncMode = ns.enum("SyncMode", True)
 SYNC_MODE = {
@@ -167,7 +180,6 @@ CONFIG_MAP = {
     CONF_NUM_PREAMBLE: cv.int_range(min=0, max=7),
     CONF_SYNC1: cv.hex_uint8_t,
     CONF_SYNC0: cv.hex_uint8_t,
-    CONF_PKTLEN: cv.uint8_t,
     CONF_MAGN_TARGET: cv.enum(MAGN_TARGET, upper=False),
     CONF_MAX_LNA_GAIN: cv.enum(MAX_LNA_GAIN, upper=False),
     CONF_MAX_DVGA_GAIN: cv.enum(MAX_DVGA_GAIN, upper=False),
@@ -179,13 +191,36 @@ CONFIG_MAP = {
     CONF_FREEZE: cv.enum(FREEZE, upper=False),
     CONF_WAIT_TIME: cv.enum(WAIT_TIME, upper=False),
     CONF_HYST_LEVEL: cv.enum(HYST_LEVEL, upper=False),
+    CONF_PACKET_MODE: cv.boolean,
+    CONF_PACKET_LENGTH: cv.uint8_t,
+    CONF_CRC_ENABLE: cv.boolean,
+    CONF_WHITENING: cv.boolean,
 }
 
-CONFIG_SCHEMA = (
-    cv.Schema({cv.GenerateID(): cv.declare_id(CC1101Component)})
+
+def _validate_packet_mode(config):
+    if config.get(CONF_PACKET_MODE, False):
+        if CONF_GDO0_PIN not in config:
+            raise cv.Invalid("gdo0_pin is required when packet_mode is enabled")
+        if CONF_PACKET_LENGTH not in config:
+            raise cv.Invalid("packet_length is required when packet_mode is enabled")
+        if config[CONF_PACKET_LENGTH] > 64:
+            raise cv.Invalid("packet_length must be <= 64 (FIFO size)")
+    return config
+
+
+CONFIG_SCHEMA = cv.All(
+    cv.Schema(
+        {
+            cv.GenerateID(): cv.declare_id(CC1101Component),
+            cv.Optional(CONF_GDO0_PIN): pins.internal_gpio_input_pin_schema,
+            cv.Optional(CONF_ON_PACKET): automation.validate_automation(single=True),
+        }
+    )
     .extend({cv.Optional(key): validator for key, validator in CONFIG_MAP.items()})
     .extend(cv.COMPONENT_SCHEMA)
-    .extend(spi.spi_device_schema(cs_pin_required=True))
+    .extend(spi.spi_device_schema(cs_pin_required=True)),
+    _validate_packet_mode,
 )
 
 
@@ -198,12 +233,29 @@ async def to_code(config):
         if key in config:
             cg.add(getattr(var, f"set_{key}")(config[key]))
 
+    if CONF_GDO0_PIN in config:
+        gdo0_pin = await cg.gpio_pin_expression(config[CONF_GDO0_PIN])
+        cg.add(var.set_gdo0_pin(gdo0_pin))
+    if CONF_ON_PACKET in config:
+        await automation.build_automation(
+            var.get_packet_trigger(),
+            [
+                (cg.std_vector.template(cg.uint8), "x"),
+                (cg.float_, "rssi"),
+                (cg.uint8, "lqi"),
+            ],
+            config[CONF_ON_PACKET],
+        )
+
 
 # Actions
 BeginTxAction = ns.class_("BeginTxAction", automation.Action)
 BeginRxAction = ns.class_("BeginRxAction", automation.Action)
 ResetAction = ns.class_("ResetAction", automation.Action)
 SetIdleAction = ns.class_("SetIdleAction", automation.Action)
+SendPacketAction = ns.class_(
+    "SendPacketAction", automation.Action, cg.Parented.template(CC1101Component)
+)
 
 CC1101_ACTION_SCHEMA = cv.Schema(
     maybe_simple_id({cv.GenerateID(CONF_ID): cv.use_id(CC1101Component)})
@@ -218,3 +270,42 @@ async def cc1101_action_to_code(config, action_id, template_arg, args):
     var = cg.new_Pvariable(action_id, template_arg)
     await cg.register_parented(var, config[CONF_ID])
     return var
+
+
+def validate_raw_data(value):
+    if isinstance(value, str):
+        return value.encode("utf-8")
+    if isinstance(value, list):
+        return cv.Schema([cv.hex_uint8_t])(value)
+    raise cv.Invalid(
+        "data must either be a string wrapped in quotes or a list of bytes"
+    )
+
+
+SEND_PACKET_ACTION_SCHEMA = cv.maybe_simple_value(
+    {
+        cv.GenerateID(): cv.use_id(CC1101Component),
+        cv.Required(CONF_DATA): cv.templatable(validate_raw_data),
+    },
+    key=CONF_DATA,
+)
+
+
+@automation.register_action(
+    "cc1101.send_packet", SendPacketAction, SEND_PACKET_ACTION_SCHEMA
+)
+async def send_packet_action_to_code(config, action_id, template_arg, args):
+    var = cg.new_Pvariable(action_id, template_arg)
+    await cg.register_parented(var, config[CONF_ID])
+    data = config[CONF_DATA]
+    if isinstance(data, bytes):
+        data = list(data)
+    if cg.is_template(data):
+        templ = await cg.templatable(data, args, cg.std_vector.template(cg.uint8))
+        cg.add(var.set_data_template(templ))
+    else:
+        # Generate static array in flash to avoid RAM copy
+        arr_id = ID(f"{action_id}_data", is_declaration=True, type=cg.uint8)
+        arr = cg.static_const_array(arr_id, cg.ArrayInitializer(*data))
+        cg.add(var.set_data_static(arr, len(data)))
+    return var
diff --git a/esphome/components/cc1101/cc1101.cpp b/esphome/components/cc1101/cc1101.cpp
index 3cbf09ded..5b6eb545b 100644
--- a/esphome/components/cc1101/cc1101.cpp
+++ b/esphome/components/cc1101/cc1101.cpp
@@ -143,6 +143,11 @@ void CC1101Component::setup() {
     return;
   }
 
+  // Setup GDO0 pin if configured
+  if (this->gdo0_pin_ != nullptr) {
+    this->gdo0_pin_->setup();
+  }
+
   this->initialized_ = true;
 
   for (uint8_t i = 0; i <= static_cast<uint8_t>(Register::TEST0); i++) {
@@ -151,8 +156,69 @@ void CC1101Component::setup() {
     }
     this->write_(static_cast<Register>(i));
   }
-  this->write_(Register::PATABLE, this->pa_table_, sizeof(this->pa_table_));
+  this->set_output_power(this->output_power_requested_);
   this->strobe_(Command::RX);
+
+  // Defer pin mode setup until after all components have completed setup()
+  // This handles the case where remote_transmitter runs after CC1101 and changes pin mode
+  if (this->gdo0_pin_ != nullptr) {
+    this->defer([this]() { this->gdo0_pin_->pin_mode(gpio::FLAG_INPUT); });
+  }
+}
+
+void CC1101Component::loop() {
+  if (this->state_.PKT_FORMAT != static_cast<uint8_t>(PacketFormat::PACKET_FORMAT_FIFO) || this->gdo0_pin_ == nullptr ||
+      !this->gdo0_pin_->digital_read()) {
+    return;
+  }
+
+  // Read state
+  this->read_(Register::RXBYTES);
+  uint8_t rx_bytes = this->state_.NUM_RXBYTES;
+  bool overflow = this->state_.RXFIFO_OVERFLOW;
+  if (overflow || rx_bytes == 0) {
+    ESP_LOGW(TAG, "RX FIFO overflow, flushing");
+    this->enter_idle_();
+    this->strobe_(Command::FRX);
+    this->strobe_(Command::RX);
+    this->wait_for_state_(State::RX);
+    return;
+  }
+
+  // Read packet
+  uint8_t payload_length;
+  if (this->state_.LENGTH_CONFIG == static_cast<uint8_t>(LengthConfig::LENGTH_CONFIG_VARIABLE)) {
+    this->read_(Register::FIFO, &payload_length, 1);
+  } else {
+    payload_length = this->state_.PKTLEN;
+  }
+  if (payload_length == 0 || payload_length > 64) {
+    ESP_LOGW(TAG, "Invalid payload length: %u", payload_length);
+    this->enter_idle_();
+    this->strobe_(Command::FRX);
+    this->strobe_(Command::RX);
+    this->wait_for_state_(State::RX);
+    return;
+  }
+  this->packet_.resize(payload_length);
+  this->read_(Register::FIFO, this->packet_.data(), payload_length);
+
+  // Read status and trigger
+  uint8_t status[2];
+  this->read_(Register::FIFO, status, 2);
+  int8_t rssi_raw = static_cast<int8_t>(status[0]);
+  float rssi = (rssi_raw * RSSI_STEP) - RSSI_OFFSET;
+  bool crc_ok = (status[1] & STATUS_CRC_OK_MASK) != 0;
+  uint8_t lqi = status[1] & STATUS_LQI_MASK;
+  if (this->state_.CRC_EN == 0 || crc_ok) {
+    this->packet_trigger_->trigger(this->packet_, rssi, lqi);
+  }
+
+  // Return to rx
+  this->enter_idle_();
+  this->strobe_(Command::FRX);
+  this->strobe_(Command::RX);
+  this->wait_for_state_(State::RX);
 }
 
 void CC1101Component::dump_config() {
@@ -177,9 +243,12 @@ void CC1101Component::dump_config() {
 }
 
 void CC1101Component::begin_tx() {
-  // Ensure Packet Format is 3 (Async Serial), use GDO0 as input during TX
+  // Ensure Packet Format is 3 (Async Serial)
   this->write_(Register::PKTCTRL0, 0x32);
   ESP_LOGV(TAG, "Beginning TX sequence");
+  if (this->gdo0_pin_ != nullptr) {
+    this->gdo0_pin_->pin_mode(gpio::FLAG_OUTPUT);
+  }
   this->strobe_(Command::TX);
   if (!this->wait_for_state_(State::TX, 50)) {
     ESP_LOGW(TAG, "Timed out waiting for TX state!");
@@ -188,6 +257,9 @@ void CC1101Component::begin_tx() {
 
 void CC1101Component::begin_rx() {
   ESP_LOGV(TAG, "Beginning RX sequence");
+  if (this->gdo0_pin_ != nullptr) {
+    this->gdo0_pin_->pin_mode(gpio::FLAG_INPUT);
+  }
   this->strobe_(Command::RX);
 }
 
@@ -201,20 +273,6 @@ void CC1101Component::set_idle() {
   this->enter_idle_();
 }
 
-void CC1101Component::set_gdo0_config(uint8_t value) {
-  this->state_.GDO0_CFG = value;
-  if (this->initialized_) {
-    this->write_(Register::IOCFG0);
-  }
-}
-
-void CC1101Component::set_gdo2_config(uint8_t value) {
-  this->state_.GDO2_CFG = value;
-  if (this->initialized_) {
-    this->write_(Register::IOCFG2);
-  }
-}
-
 bool CC1101Component::wait_for_state_(State target_state, uint32_t timeout_ms) {
   uint32_t start = millis();
   while (millis() - start < timeout_ms) {
@@ -282,6 +340,33 @@ void CC1101Component::read_(Register reg, uint8_t *buffer, size_t length) {
   this->disable();
 }
 
+CC1101Error CC1101Component::transmit_packet(const std::vector<uint8_t> &packet) {
+  if (this->state_.PKT_FORMAT != static_cast<uint8_t>(PacketFormat::PACKET_FORMAT_FIFO)) {
+    return CC1101Error::PARAMS;
+  }
+
+  // Write packet
+  this->enter_idle_();
+  this->strobe_(Command::FTX);
+  if (this->state_.LENGTH_CONFIG == static_cast<uint8_t>(LengthConfig::LENGTH_CONFIG_VARIABLE)) {
+    this->write_(Register::FIFO, static_cast<uint8_t>(packet.size()));
+  }
+  this->write_(Register::FIFO, packet.data(), packet.size());
+  this->strobe_(Command::TX);
+  if (!this->wait_for_state_(State::IDLE, 1000)) {
+    ESP_LOGW(TAG, "TX timeout");
+    this->enter_idle_();
+    this->strobe_(Command::RX);
+    this->wait_for_state_(State::RX);
+    return CC1101Error::TIMEOUT;
+  }
+
+  // Return to rx
+  this->strobe_(Command::RX);
+  this->wait_for_state_(State::RX);
+  return CC1101Error::NONE;
+}
+
 // Setters
 void CC1101Component::set_output_power(float value) {
   this->output_power_requested_ = value;
@@ -428,6 +513,7 @@ void CC1101Component::set_modulation_type(Modulation value) {
   this->state_.PA_POWER = value == Modulation::MODULATION_ASK_OOK ? 1 : 0;
   if (this->initialized_) {
     this->enter_idle_();
+    this->set_output_power(this->output_power_requested_);
     this->write_(Register::MDMCFG2);
     this->write_(Register::FREND0);
     this->strobe_(Command::RX);
@@ -462,13 +548,6 @@ void CC1101Component::set_sync0(uint8_t value) {
   }
 }
 
-void CC1101Component::set_pktlen(uint8_t value) {
-  this->state_.PKTLEN = value;
-  if (this->initialized_) {
-    this->write_(Register::PKTLEN);
-  }
-}
-
 void CC1101Component::set_magn_target(MagnTarget value) {
   this->state_.MAGN_TARGET = static_cast<uint8_t>(value);
   if (this->initialized_) {
@@ -546,4 +625,50 @@ void CC1101Component::set_hyst_level(HystLevel value) {
   }
 }
 
+void CC1101Component::set_packet_mode(bool value) {
+  this->state_.PKT_FORMAT =
+      static_cast<uint8_t>(value ? PacketFormat::PACKET_FORMAT_FIFO : PacketFormat::PACKET_FORMAT_ASYNC_SERIAL);
+  if (value) {
+    // Configure GDO0 for FIFO status (asserts on RX FIFO threshold or end of packet)
+    this->state_.GDO0_CFG = 0x01;
+    // Set max RX FIFO threshold to ensure we only trigger on end-of-packet
+    this->state_.FIFO_THR = 15;
+  } else {
+    // Configure GDO0 for serial data (async serial mode)
+    this->state_.GDO0_CFG = 0x0D;
+  }
+  if (this->initialized_) {
+    this->write_(Register::PKTCTRL0);
+    this->write_(Register::IOCFG0);
+    this->write_(Register::FIFOTHR);
+  }
+}
+
+void CC1101Component::set_packet_length(uint8_t value) {
+  if (value == 0) {
+    this->state_.LENGTH_CONFIG = static_cast<uint8_t>(LengthConfig::LENGTH_CONFIG_VARIABLE);
+  } else {
+    this->state_.LENGTH_CONFIG = static_cast<uint8_t>(LengthConfig::LENGTH_CONFIG_FIXED);
+    this->state_.PKTLEN = value;
+  }
+  if (this->initialized_) {
+    this->write_(Register::PKTCTRL0);
+    this->write_(Register::PKTLEN);
+  }
+}
+
+void CC1101Component::set_crc_enable(bool value) {
+  this->state_.CRC_EN = value ? 1 : 0;
+  if (this->initialized_) {
+    this->write_(Register::PKTCTRL0);
+  }
+}
+
+void CC1101Component::set_whitening(bool value) {
+  this->state_.WHITE_DATA = value ? 1 : 0;
+  if (this->initialized_) {
+    this->write_(Register::PKTCTRL0);
+  }
+}
+
 }  // namespace esphome::cc1101
diff --git a/esphome/components/cc1101/cc1101.h b/esphome/components/cc1101/cc1101.h
index 65aeb2ea8..b896f7e97 100644
--- a/esphome/components/cc1101/cc1101.h
+++ b/esphome/components/cc1101/cc1101.h
@@ -5,9 +5,12 @@
 #include "esphome/components/spi/spi.h"
 #include "esphome/core/automation.h"
 #include "cc1101defs.h"
+#include <vector>
 
 namespace esphome::cc1101 {
 
+enum class CC1101Error { NONE = 0, TIMEOUT, PARAMS, CRC_ERROR, FIFO_OVERFLOW };
+
 class CC1101Component : public Component,
                         public spi::SPIDevice<spi::BIT_ORDER_MSB_FIRST, spi::CLOCK_POLARITY_LOW,
                                               spi::CLOCK_PHASE_LEADING, spi::DATA_RATE_1MHZ> {
@@ -15,6 +18,7 @@ class CC1101Component : public Component,
   CC1101Component();
 
   void setup() override;
+  void loop() override;
   void dump_config() override;
 
   // Actions
@@ -24,8 +28,7 @@ class CC1101Component : public Component,
   void set_idle();
 
   // GDO Pin Configuration
-  void set_gdo0_config(uint8_t value);
-  void set_gdo2_config(uint8_t value);
+  void set_gdo0_pin(InternalGPIOPin *pin) { this->gdo0_pin_ = pin; }
 
   // Configuration Setters
   void set_output_power(float value);
@@ -48,7 +51,6 @@ class CC1101Component : public Component,
   void set_num_preamble(uint8_t value);
   void set_sync1(uint8_t value);
   void set_sync0(uint8_t value);
-  void set_pktlen(uint8_t value);
 
   // AGC settings
   void set_magn_target(MagnTarget value);
@@ -63,6 +65,16 @@ class CC1101Component : public Component,
   void set_wait_time(WaitTime value);
   void set_hyst_level(HystLevel value);
 
+  // Packet mode settings
+  void set_packet_mode(bool value);
+  void set_packet_length(uint8_t value);
+  void set_crc_enable(bool value);
+  void set_whitening(bool value);
+
+  // Packet mode operations
+  CC1101Error transmit_packet(const std::vector<uint8_t> &packet);
+  Trigger<std::vector<uint8_t>, float, uint8_t> *get_packet_trigger() const { return this->packet_trigger_; }
+
  protected:
   uint16_t chip_id_{0};
   bool initialized_{false};
@@ -73,6 +85,13 @@ class CC1101Component : public Component,
 
   CC1101State state_;
 
+  // GDO pin for packet reception
+  InternalGPIOPin *gdo0_pin_{nullptr};
+
+  // Packet handling
+  Trigger<std::vector<uint8_t>, float, uint8_t> *packet_trigger_{new Trigger<std::vector<uint8_t>, float, uint8_t>()};
+  std::vector<uint8_t> packet_;
+
   // Low-level Helpers
   uint8_t strobe_(Command cmd);
   void write_(Register reg);
@@ -107,4 +126,28 @@ template<typename... Ts> class SetIdleAction : public Action<Ts...>, public Pare
   void play(const Ts &...x) override { this->parent_->set_idle(); }
 };
 
+template<typename... Ts> class SendPacketAction : public Action<Ts...>, public Parented<CC1101Component> {
+ public:
+  void set_data_template(std::function<std::vector<uint8_t>(Ts...)> func) { this->data_func_ = func; }
+  void set_data_static(const uint8_t *data, size_t len) {
+    this->data_static_ = data;
+    this->data_static_len_ = len;
+  }
+
+  void play(const Ts &...x) override {
+    if (this->data_func_) {
+      auto data = this->data_func_(x...);
+      this->parent_->transmit_packet(data);
+    } else if (this->data_static_ != nullptr) {
+      std::vector<uint8_t> data(this->data_static_, this->data_static_ + this->data_static_len_);
+      this->parent_->transmit_packet(data);
+    }
+  }
+
+ protected:
+  std::function<std::vector<uint8_t>(Ts...)> data_func_{};
+  const uint8_t *data_static_{nullptr};
+  size_t data_static_len_{0};
+};
+
 }  // namespace esphome::cc1101
diff --git a/esphome/components/cc1101/cc1101defs.h b/esphome/components/cc1101/cc1101defs.h
index afeb5f1d7..1bc42f585 100644
--- a/esphome/components/cc1101/cc1101defs.h
+++ b/esphome/components/cc1101/cc1101defs.h
@@ -6,6 +6,12 @@ namespace esphome::cc1101 {
 
 static constexpr float XTAL_FREQUENCY = 26000000;
 
+static constexpr float RSSI_OFFSET = 74.0f;
+static constexpr float RSSI_STEP = 0.5f;
+
+static constexpr uint8_t STATUS_CRC_OK_MASK = 0x80;
+static constexpr uint8_t STATUS_LQI_MASK = 0x7F;
+
 static constexpr uint8_t BUS_BURST = 0x40;
 static constexpr uint8_t BUS_READ = 0x80;
 static constexpr uint8_t BUS_WRITE = 0x00;
@@ -134,6 +140,10 @@ enum class SyncMode : uint8_t {
   SYNC_MODE_15_16,
   SYNC_MODE_16_16,
   SYNC_MODE_30_32,
+  SYNC_MODE_NONE_CS,
+  SYNC_MODE_15_16_CS,
+  SYNC_MODE_16_16_CS,
+  SYNC_MODE_30_32_CS,
 };
 
 enum class Modulation : uint8_t {
@@ -218,6 +228,19 @@ enum class HystLevel : uint8_t {
   HYST_LEVEL_HIGH,
 };
 
+enum class PacketFormat : uint8_t {
+  PACKET_FORMAT_FIFO,
+  PACKET_FORMAT_SYNC_SERIAL,
+  PACKET_FORMAT_RANDOM_TX,
+  PACKET_FORMAT_ASYNC_SERIAL,
+};
+
+enum class LengthConfig : uint8_t {
+  LENGTH_CONFIG_FIXED,
+  LENGTH_CONFIG_VARIABLE,
+  LENGTH_CONFIG_INFINITE,
+};
+
 struct __attribute__((packed)) CC1101State {
   // Byte array accessors for bulk SPI transfers
   uint8_t *regs() { return reinterpret_cast<uint8_t *>(this); }
diff --git a/esphome/components/const/__init__.py b/esphome/components/const/__init__.py
index 12a69551f..fcfafa0c1 100644
--- a/esphome/components/const/__init__.py
+++ b/esphome/components/const/__init__.py
@@ -7,9 +7,11 @@ BYTE_ORDER_LITTLE = "little_endian"
 BYTE_ORDER_BIG = "big_endian"
 
 CONF_COLOR_DEPTH = "color_depth"
+CONF_CRC_ENABLE = "crc_enable"
 CONF_DRAW_ROUNDING = "draw_rounding"
 CONF_ENABLED = "enabled"
 CONF_IGNORE_NOT_FOUND = "ignore_not_found"
+CONF_ON_PACKET = "on_packet"
 CONF_ON_RECEIVE = "on_receive"
 CONF_ON_STATE_CHANGE = "on_state_change"
 CONF_REQUEST_HEADERS = "request_headers"
diff --git a/esphome/components/espnow/packet_transport/espnow_transport.cpp b/esphome/components/espnow/packet_transport/espnow_transport.cpp
index d30e9447a..c1252acc9 100644
--- a/esphome/components/espnow/packet_transport/espnow_transport.cpp
+++ b/esphome/components/espnow/packet_transport/espnow_transport.cpp
@@ -13,7 +13,7 @@ static const char *const TAG = "espnow.transport";
 bool ESPNowTransport::should_send() { return this->parent_ != nullptr && !this->parent_->is_failed(); }
 
 void ESPNowTransport::setup() {
-  packet_transport::PacketTransport::setup();
+  PacketTransport::setup();
 
   if (this->parent_ == nullptr) {
     ESP_LOGE(TAG, "ESPNow component not set");
@@ -26,15 +26,10 @@ void ESPNowTransport::setup() {
            this->peer_address_[2], this->peer_address_[3], this->peer_address_[4], this->peer_address_[5]);
 
   // Register received handler
-  this->parent_->register_received_handler(static_cast<ESPNowReceivedPacketHandler *>(this));
+  this->parent_->register_received_handler(this);
 
   // Register broadcasted handler
-  this->parent_->register_broadcasted_handler(static_cast<ESPNowBroadcastedHandler *>(this));
-}
-
-void ESPNowTransport::update() {
-  packet_transport::PacketTransport::update();
-  this->updated_ = true;
+  this->parent_->register_broadcasted_handler(this);
 }
 
 void ESPNowTransport::send_packet(const std::vector<uint8_t> &buf) const {
diff --git a/esphome/components/espnow/packet_transport/espnow_transport.h b/esphome/components/espnow/packet_transport/espnow_transport.h
index 3629fad2c..d85119db7 100644
--- a/esphome/components/espnow/packet_transport/espnow_transport.h
+++ b/esphome/components/espnow/packet_transport/espnow_transport.h
@@ -18,7 +18,6 @@ class ESPNowTransport : public packet_transport::PacketTransport,
                         public ESPNowBroadcastedHandler {
  public:
   void setup() override;
-  void update() override;
   float get_setup_priority() const override { return setup_priority::AFTER_WIFI; }
 
   void set_peer_address(peer_address_t address) {
diff --git a/esphome/components/ethernet/__init__.py b/esphome/components/ethernet/__init__.py
index b4b1fcd9f..e1ed327fb 100644
--- a/esphome/components/ethernet/__init__.py
+++ b/esphome/components/ethernet/__init__.py
@@ -434,10 +434,13 @@ def _final_validate_rmii_pins(config: ConfigType) -> None:
 
     # Check all used pins against RMII reserved pins
     for pin_list in pins.PIN_SCHEMA_REGISTRY.pins_used.values():
-        for pin_path, _, pin_config in pin_list:
+        for pin_path, pin_device, pin_config in pin_list:
             pin_num = pin_config.get(CONF_NUMBER)
             if pin_num not in rmii_pins:
                 continue
+            # Skip if pin is not directly on ESP, but at some expander (device set to something else than 'None')
+            if pin_device is not None:
+                continue
             # Found a conflict - show helpful error message
             pin_function = rmii_pins[pin_num]
             component_path = ".".join(str(p) for p in pin_path)
diff --git a/esphome/components/packet_transport/__init__.py b/esphome/components/packet_transport/__init__.py
index 43da7740f..1930e45e8 100644
--- a/esphome/components/packet_transport/__init__.py
+++ b/esphome/components/packet_transport/__init__.py
@@ -176,17 +176,22 @@ async def register_packet_transport(var, config):
         if encryption := provider.get(CONF_ENCRYPTION):
             cg.add(var.set_provider_encryption(name, hash_encryption_key(encryption)))
 
+    is_provider = False
     for sens_conf in config.get(CONF_SENSORS, ()):
+        is_provider = True
         sens_id = sens_conf[CONF_ID]
         sensor = await cg.get_variable(sens_id)
         bcst_id = sens_conf.get(CONF_BROADCAST_ID, sens_id.id)
         cg.add(var.add_sensor(bcst_id, sensor))
     for sens_conf in config.get(CONF_BINARY_SENSORS, ()):
+        is_provider = True
         sens_id = sens_conf[CONF_ID]
         sensor = await cg.get_variable(sens_id)
         bcst_id = sens_conf.get(CONF_BROADCAST_ID, sens_id.id)
         cg.add(var.add_binary_sensor(bcst_id, sensor))
 
+    if is_provider:
+        cg.add(var.set_is_provider(True))
     if encryption := config.get(CONF_ENCRYPTION):
         cg.add(var.set_encryption_key(hash_encryption_key(encryption)))
     return providers
diff --git a/esphome/components/packet_transport/packet_transport.cpp b/esphome/components/packet_transport/packet_transport.cpp
index 37e5f3d9e..da7f5f8bf 100644
--- a/esphome/components/packet_transport/packet_transport.cpp
+++ b/esphome/components/packet_transport/packet_transport.cpp
@@ -263,6 +263,7 @@ void PacketTransport::flush_() {
     xxtea::encrypt((uint32_t *) (encode_buffer.data() + header_len), len / 4,
                    (uint32_t *) this->encryption_key_.data());
   }
+  ESP_LOGVV(TAG, "Sending packet %s", format_hex_pretty(encode_buffer.data(), encode_buffer.size()).c_str());
   this->send_packet(encode_buffer);
 }
 
@@ -316,6 +317,9 @@ void PacketTransport::send_data_(bool all) {
 }
 
 void PacketTransport::update() {
+  // resend all sensors if required
+  if (this->is_provider_)
+    this->send_data_(true);
   if (!this->ping_pong_enable_) {
     return;
   }
@@ -551,7 +555,7 @@ void PacketTransport::loop() {
   if (this->resend_ping_key_)
     this->send_ping_pong_request_();
   if (this->updated_) {
-    this->send_data_(this->resend_data_);
+    this->send_data_(false);
   }
 }
 
diff --git a/esphome/components/packet_transport/packet_transport.h b/esphome/components/packet_transport/packet_transport.h
index a2370e974..86ec564fc 100644
--- a/esphome/components/packet_transport/packet_transport.h
+++ b/esphome/components/packet_transport/packet_transport.h
@@ -91,6 +91,7 @@ class PacketTransport : public PollingComponent {
     }
   }
 
+  void set_is_provider(bool is_provider) { this->is_provider_ = is_provider; }
   void set_encryption_key(std::vector<uint8_t> key) { this->encryption_key_ = std::move(key); }
   void set_rolling_code_enable(bool enable) { this->rolling_code_enable_ = enable; }
   void set_ping_pong_enable(bool enable) { this->ping_pong_enable_ = enable; }
@@ -129,7 +130,7 @@ class PacketTransport : public PollingComponent {
   uint32_t ping_pong_recyle_time_{};
   uint32_t last_key_time_{};
   bool resend_ping_key_{};
-  bool resend_data_{};
+  bool is_provider_{};
   const char *name_{};
   ESPPreferenceObject pref_{};
 
diff --git a/esphome/components/sx126x/__init__.py b/esphome/components/sx126x/__init__.py
index 1eb83b7a3..4641db648 100644
--- a/esphome/components/sx126x/__init__.py
+++ b/esphome/components/sx126x/__init__.py
@@ -1,6 +1,7 @@
 from esphome import automation, pins
 import esphome.codegen as cg
 from esphome.components import spi
+from esphome.components.const import CONF_CRC_ENABLE, CONF_ON_PACKET
 import esphome.config_validation as cv
 from esphome.const import CONF_BUSY_PIN, CONF_DATA, CONF_FREQUENCY, CONF_ID
 from esphome.core import ID, TimePeriod
@@ -14,7 +15,6 @@ CONF_SX126X_ID = "sx126x_id"
 CONF_BANDWIDTH = "bandwidth"
 CONF_BITRATE = "bitrate"
 CONF_CODING_RATE = "coding_rate"
-CONF_CRC_ENABLE = "crc_enable"
 CONF_CRC_INVERTED = "crc_inverted"
 CONF_CRC_SIZE = "crc_size"
 CONF_CRC_POLYNOMIAL = "crc_polynomial"
@@ -23,7 +23,6 @@ CONF_DEVIATION = "deviation"
 CONF_DIO1_PIN = "dio1_pin"
 CONF_HW_VERSION = "hw_version"
 CONF_MODULATION = "modulation"
-CONF_ON_PACKET = "on_packet"
 CONF_PA_POWER = "pa_power"
 CONF_PA_RAMP = "pa_ramp"
 CONF_PAYLOAD_LENGTH = "payload_length"
diff --git a/esphome/components/sx126x/packet_transport/sx126x_transport.cpp b/esphome/components/sx126x/packet_transport/sx126x_transport.cpp
index 2cfc4b700..59d80bd29 100644
--- a/esphome/components/sx126x/packet_transport/sx126x_transport.cpp
+++ b/esphome/components/sx126x/packet_transport/sx126x_transport.cpp
@@ -12,12 +12,6 @@ void SX126xTransport::setup() {
   this->parent_->register_listener(this);
 }
 
-void SX126xTransport::update() {
-  PacketTransport::update();
-  this->updated_ = true;
-  this->resend_data_ = true;
-}
-
 void SX126xTransport::send_packet(const std::vector<uint8_t> &buf) const { this->parent_->transmit_packet(buf); }
 
 void SX126xTransport::on_packet(const std::vector<uint8_t> &packet, float rssi, float snr) { this->process_(packet); }
diff --git a/esphome/components/sx126x/packet_transport/sx126x_transport.h b/esphome/components/sx126x/packet_transport/sx126x_transport.h
index 755d30417..640c6a76f 100644
--- a/esphome/components/sx126x/packet_transport/sx126x_transport.h
+++ b/esphome/components/sx126x/packet_transport/sx126x_transport.h
@@ -11,7 +11,6 @@ namespace sx126x {
 class SX126xTransport : public packet_transport::PacketTransport, public Parented<SX126x>, public SX126xListener {
  public:
   void setup() override;
-  void update() override;
   void on_packet(const std::vector<uint8_t> &packet, float rssi, float snr) override;
   float get_setup_priority() const override { return setup_priority::AFTER_WIFI; }
 
diff --git a/esphome/components/sx127x/__init__.py b/esphome/components/sx127x/__init__.py
index 77cb61f7f..b569a7597 100644
--- a/esphome/components/sx127x/__init__.py
+++ b/esphome/components/sx127x/__init__.py
@@ -1,6 +1,7 @@
 from esphome import automation, pins
 import esphome.codegen as cg
 from esphome.components import spi
+from esphome.components.const import CONF_CRC_ENABLE, CONF_ON_PACKET
 import esphome.config_validation as cv
 from esphome.const import CONF_DATA, CONF_FREQUENCY, CONF_ID
 from esphome.core import ID
@@ -16,11 +17,9 @@ CONF_BANDWIDTH = "bandwidth"
 CONF_BITRATE = "bitrate"
 CONF_BITSYNC = "bitsync"
 CONF_CODING_RATE = "coding_rate"
-CONF_CRC_ENABLE = "crc_enable"
 CONF_DEVIATION = "deviation"
 CONF_DIO0_PIN = "dio0_pin"
 CONF_MODULATION = "modulation"
-CONF_ON_PACKET = "on_packet"
 CONF_PA_PIN = "pa_pin"
 CONF_PA_POWER = "pa_power"
 CONF_PA_RAMP = "pa_ramp"
diff --git a/esphome/components/sx127x/packet_transport/sx127x_transport.cpp b/esphome/components/sx127x/packet_transport/sx127x_transport.cpp
index b1d014bb9..893726e81 100644
--- a/esphome/components/sx127x/packet_transport/sx127x_transport.cpp
+++ b/esphome/components/sx127x/packet_transport/sx127x_transport.cpp
@@ -12,12 +12,6 @@ void SX127xTransport::setup() {
   this->parent_->register_listener(this);
 }
 
-void SX127xTransport::update() {
-  PacketTransport::update();
-  this->updated_ = true;
-  this->resend_data_ = true;
-}
-
 void SX127xTransport::send_packet(const std::vector<uint8_t> &buf) const { this->parent_->transmit_packet(buf); }
 
 void SX127xTransport::on_packet(const std::vector<uint8_t> &packet, float rssi, float snr) { this->process_(packet); }
diff --git a/esphome/components/sx127x/packet_transport/sx127x_transport.h b/esphome/components/sx127x/packet_transport/sx127x_transport.h
index e27b7f8d5..620837297 100644
--- a/esphome/components/sx127x/packet_transport/sx127x_transport.h
+++ b/esphome/components/sx127x/packet_transport/sx127x_transport.h
@@ -11,7 +11,6 @@ namespace sx127x {
 class SX127xTransport : public packet_transport::PacketTransport, public Parented<SX127x>, public SX127xListener {
  public:
   void setup() override;
-  void update() override;
   void on_packet(const std::vector<uint8_t> &packet, float rssi, float snr) override;
   float get_setup_priority() const override { return setup_priority::AFTER_WIFI; }
 
diff --git a/esphome/components/uart/packet_transport/uart_transport.cpp b/esphome/components/uart/packet_transport/uart_transport.cpp
index 4a9aa0fe4..6b8eae611 100644
--- a/esphome/components/uart/packet_transport/uart_transport.cpp
+++ b/esphome/components/uart/packet_transport/uart_transport.cpp
@@ -55,12 +55,6 @@ void UARTTransport::loop() {
   }
 }
 
-void UARTTransport::update() {
-  this->updated_ = true;
-  this->resend_data_ = true;
-  PacketTransport::update();
-}
-
 /**
  * Write a byte to the UART bus. If the byte is a flag or control byte, it will be escaped.
  * @param byte The byte to write.
diff --git a/esphome/components/uart/packet_transport/uart_transport.h b/esphome/components/uart/packet_transport/uart_transport.h
index e84bed95e..1c92af536 100644
--- a/esphome/components/uart/packet_transport/uart_transport.h
+++ b/esphome/components/uart/packet_transport/uart_transport.h
@@ -23,7 +23,6 @@ static const uint8_t CONTROL_BYTE = 0x7D;
 class UARTTransport : public packet_transport::PacketTransport, public UARTDevice {
  public:
   void loop() override;
-  void update() override;
   float get_setup_priority() const override { return setup_priority::PROCESSOR; }
 
  protected:
diff --git a/esphome/components/udp/packet_transport/udp_transport.cpp b/esphome/components/udp/packet_transport/udp_transport.cpp
index b92e0d64d..f3e33573a 100644
--- a/esphome/components/udp/packet_transport/udp_transport.cpp
+++ b/esphome/components/udp/packet_transport/udp_transport.cpp
@@ -8,29 +8,14 @@ namespace udp {
 
 static const char *const TAG = "udp_transport";
 
-bool UDPTransport::should_send() { return this->should_broadcast_ && network::is_connected(); }
+bool UDPTransport::should_send() { return network::is_connected(); }
 void UDPTransport::setup() {
   PacketTransport::setup();
-  this->should_broadcast_ = this->ping_pong_enable_;
-#ifdef USE_SENSOR
-  this->should_broadcast_ |= !this->sensors_.empty();
-#endif
-#ifdef USE_BINARY_SENSOR
-  this->should_broadcast_ |= !this->binary_sensors_.empty();
-#endif
-  if (this->should_broadcast_)
-    this->parent_->set_should_broadcast();
   if (!this->providers_.empty() || this->is_encrypted_()) {
     this->parent_->add_listener([this](std::vector<uint8_t> &buf) { this->process_(buf); });
   }
 }
 
-void UDPTransport::update() {
-  PacketTransport::update();
-  this->updated_ = true;
-  this->resend_data_ = this->should_broadcast_;
-}
-
 void UDPTransport::send_packet(const std::vector<uint8_t> &buf) const { this->parent_->send_packet(buf); }
 }  // namespace udp
 }  // namespace esphome
diff --git a/esphome/components/udp/packet_transport/udp_transport.h b/esphome/components/udp/packet_transport/udp_transport.h
index c87eb6278..8d01ae090 100644
--- a/esphome/components/udp/packet_transport/udp_transport.h
+++ b/esphome/components/udp/packet_transport/udp_transport.h
@@ -12,14 +12,12 @@ namespace udp {
 class UDPTransport : public packet_transport::PacketTransport, public Parented<UDPComponent> {
  public:
   void setup() override;
-  void update() override;
 
   float get_setup_priority() const override { return setup_priority::AFTER_WIFI; }
 
  protected:
   void send_packet(const std::vector<uint8_t> &buf) const override;
   bool should_send() override;
-  bool should_broadcast_{false};
   size_t get_max_packet_size() override { return MAX_PACKET_SIZE; }
 };
 
diff --git a/esphome/components/web_server_idf/web_server_idf.cpp b/esphome/components/web_server_idf/web_server_idf.cpp
index af99b85e5..8c3ad288c 100644
--- a/esphome/components/web_server_idf/web_server_idf.cpp
+++ b/esphome/components/web_server_idf/web_server_idf.cpp
@@ -117,18 +117,6 @@ void AsyncWebServer::end() {
   }
 }
 
-void AsyncWebServer::set_lru_purge_enable(bool enable) {
-  if (this->lru_purge_enable_ == enable) {
-    return;  // No change needed
-  }
-  this->lru_purge_enable_ = enable;
-  // If server is already running, restart it with new config
-  if (this->server_) {
-    this->end();
-    this->begin();
-  }
-}
-
 void AsyncWebServer::begin() {
   if (this->server_) {
     this->end();
@@ -136,8 +124,11 @@ void AsyncWebServer::begin() {
   httpd_config_t config = HTTPD_DEFAULT_CONFIG();
   config.server_port = this->port_;
   config.uri_match_fn = [](const char * /*unused*/, const char * /*unused*/, size_t /*unused*/) { return true; };
-  // Enable LRU purging if requested (e.g., by captive portal to handle probe bursts)
-  config.lru_purge_enable = this->lru_purge_enable_;
+  // Always enable LRU purging to handle socket exhaustion gracefully.
+  // When max sockets is reached, the oldest connection is closed to make room for new ones.
+  // This prevents "httpd_accept_conn: error in accept (23)" errors.
+  // See: https://github.com/esphome/esphome/issues/12464
+  config.lru_purge_enable = true;
   // Use custom close function that shuts down before closing to prevent lwIP race conditions
   config.close_fn = AsyncWebServer::safe_close_with_shutdown;
   if (httpd_start(&this->server_, &config) == ESP_OK) {
diff --git a/esphome/components/web_server_idf/web_server_idf.h b/esphome/components/web_server_idf/web_server_idf.h
index a139e9e4d..5f9f59838 100644
--- a/esphome/components/web_server_idf/web_server_idf.h
+++ b/esphome/components/web_server_idf/web_server_idf.h
@@ -199,13 +199,11 @@ class AsyncWebServer {
     return *handler;
   }
 
-  void set_lru_purge_enable(bool enable);
   httpd_handle_t get_server() { return this->server_; }
 
  protected:
   uint16_t port_{};
   httpd_handle_t server_{};
-  bool lru_purge_enable_{false};
   static esp_err_t request_handler(httpd_req_t *r);
   static esp_err_t request_post_handler(httpd_req_t *r);
   esp_err_t request_handler_(AsyncWebServerRequest *request) const;
diff --git a/esphome/components/wifi/wifi_component.cpp b/esphome/components/wifi/wifi_component.cpp
index d46916bfd..a5e8c4a59 100644
--- a/esphome/components/wifi/wifi_component.cpp
+++ b/esphome/components/wifi/wifi_component.cpp
@@ -205,6 +205,21 @@ static constexpr uint32_t WIFI_COOLDOWN_DURATION_MS = 500;
 /// While connecting, WiFi can't beacon the AP properly, so needs longer cooldown
 static constexpr uint32_t WIFI_COOLDOWN_WITH_AP_ACTIVE_MS = 30000;
 
+/// Timeout for WiFi scan operations
+/// This is a fallback in case we don't receive a scan done callback from the WiFi driver.
+/// Normal scans complete via callback; this only triggers if something goes wrong.
+static constexpr uint32_t WIFI_SCAN_TIMEOUT_MS = 31000;
+
+/// Timeout for WiFi connection attempts
+/// This is a fallback in case we don't receive connection success/failure callbacks.
+/// Some platforms (especially LibreTiny/Beken) can take 30-60 seconds to connect,
+/// particularly with fast_connect enabled where no prior scan provides channel info.
+/// Do not lower this value - connection failures are detected via callbacks, not timeout.
+/// If this timeout fires prematurely while a connection is still in progress, it causes
+/// cascading failures: the subsequent scan will also fail because the WiFi driver is
+/// still busy with the previous connection attempt.
+static constexpr uint32_t WIFI_CONNECT_TIMEOUT_MS = 46000;
+
 static constexpr uint8_t get_max_retries_for_phase(WiFiRetryPhase phase) {
   switch (phase) {
     case WiFiRetryPhase::INITIAL_CONNECT:
@@ -1035,7 +1050,7 @@ __attribute__((noinline)) static void log_scan_result(const WiFiScanResult &res)
 
 void WiFiComponent::check_scanning_finished() {
   if (!this->scan_done_) {
-    if (millis() - this->action_started_ > 30000) {
+    if (millis() - this->action_started_ > WIFI_SCAN_TIMEOUT_MS) {
       ESP_LOGE(TAG, "Scan timeout");
       this->retry_connect();
     }
@@ -1184,8 +1199,9 @@ void WiFiComponent::check_connecting_finished() {
   }
 
   uint32_t now = millis();
-  if (now - this->action_started_ > 30000) {
-    ESP_LOGW(TAG, "Connection timeout");
+  if (now - this->action_started_ > WIFI_CONNECT_TIMEOUT_MS) {
+    ESP_LOGW(TAG, "Connection timeout, aborting connection attempt");
+    this->wifi_disconnect_();
     this->retry_connect();
     return;
   }
@@ -1405,6 +1421,10 @@ bool WiFiComponent::transition_to_phase_(WiFiRetryPhase new_phase) {
       // without disrupting the captive portal/improv connection
       if (!this->is_captive_portal_active_() && !this->is_esp32_improv_active_()) {
         this->restart_adapter();
+      } else {
+        // Even when skipping full restart, disconnect to clear driver state
+        // Without this, platforms like LibreTiny may think we're still connecting
+        this->wifi_disconnect_();
       }
       // Clear scan flag - we're starting a new retry cycle
       this->did_scan_this_cycle_ = false;
diff --git a/esphome/components/wifi/wifi_component_esp_idf.cpp b/esphome/components/wifi/wifi_component_esp_idf.cpp
index 1f4eb1e42..4a3c40a11 100644
--- a/esphome/components/wifi/wifi_component_esp_idf.cpp
+++ b/esphome/components/wifi/wifi_component_esp_idf.cpp
@@ -720,6 +720,7 @@ void WiFiComponent::wifi_process_event_(IDFWiFiEvent *data) {
   } else if (data->event_base == WIFI_EVENT && data->event_id == WIFI_EVENT_STA_STOP) {
     ESP_LOGV(TAG, "STA stop");
     s_sta_started = false;
+    s_sta_connecting = false;
 
   } else if (data->event_base == WIFI_EVENT && data->event_id == WIFI_EVENT_STA_AUTHMODE_CHANGE) {
     const auto &it = data->data.sta_authmode_change;
diff --git a/esphome/components/wifi/wifi_component_libretiny.cpp b/esphome/components/wifi/wifi_component_libretiny.cpp
index 4fd64bdfa..36003a6eb 100644
--- a/esphome/components/wifi/wifi_component_libretiny.cpp
+++ b/esphome/components/wifi/wifi_component_libretiny.cpp
@@ -291,6 +291,7 @@ void WiFiComponent::wifi_event_callback_(esphome_wifi_event_id_t event, esphome_
     }
     case ESPHOME_EVENT_ID_WIFI_STA_STOP: {
       ESP_LOGV(TAG, "STA stop");
+      s_sta_connecting = false;
       break;
     }
     case ESPHOME_EVENT_ID_WIFI_STA_CONNECTED: {
@@ -322,7 +323,7 @@ void WiFiComponent::wifi_event_callback_(esphome_wifi_event_id_t event, esphome_
       // wifi_sta_connect_status_() to return IDLE. The main loop then sees
       // "Unknown connection status 0" (wifi_component.cpp check_connecting_finished)
       // and calls retry_connect(), aborting a connection that may succeed moments later.
-      // Real connection failures will have ssid/bssid populated, or we'll hit the 30s timeout.
+      // Real connection failures will have ssid/bssid populated, or we'll hit the connection timeout.
       if (it.ssid_len == 0 && s_sta_connecting) {
         ESP_LOGV(TAG, "Ignoring disconnect event with empty ssid while connecting (reason=%s)",
                  get_disconnect_reason_str(it.reason));
@@ -527,7 +528,12 @@ bool WiFiComponent::wifi_start_ap_(const WiFiAP &ap) {
 network::IPAddress WiFiComponent::wifi_soft_ap_ip() { return {WiFi.softAPIP()}; }
 #endif  // USE_WIFI_AP
 
-bool WiFiComponent::wifi_disconnect_() { return WiFi.disconnect(); }
+bool WiFiComponent::wifi_disconnect_() {
+  // Clear connecting flag first so disconnect events aren't ignored
+  // and wifi_sta_connect_status_() returns IDLE instead of CONNECTING
+  s_sta_connecting = false;
+  return WiFi.disconnect();
+}
 
 bssid_t WiFiComponent::wifi_bssid() {
   bssid_t bssid{};
diff --git a/esphome/components/wifi_signal/wifi_signal_sensor.h b/esphome/components/wifi_signal/wifi_signal_sensor.h
index 5d7f4b456..9f581f1eb 100644
--- a/esphome/components/wifi_signal/wifi_signal_sensor.h
+++ b/esphome/components/wifi_signal/wifi_signal_sensor.h
@@ -16,7 +16,12 @@ class WiFiSignalSensor : public sensor::Sensor, public PollingComponent {
 #ifdef USE_WIFI_LISTENERS
   void setup() override { wifi::global_wifi_component->add_connect_state_listener(this); }
 #endif
-  void update() override { this->publish_state(wifi::global_wifi_component->wifi_rssi()); }
+  void update() override {
+    int8_t rssi = wifi::global_wifi_component->wifi_rssi();
+    if (rssi != wifi::WIFI_RSSI_DISCONNECTED) {
+      this->publish_state(rssi);
+    }
+  }
   void dump_config() override;
 
   float get_setup_priority() const override { return setup_priority::AFTER_WIFI; }
diff --git a/esphome/config.py b/esphome/config.py
index 694716be3..6f6ad4886 100644
--- a/esphome/config.py
+++ b/esphome/config.py
@@ -1010,14 +1010,14 @@ def validate_config(
             result.add_error(err)
             return result
 
-    CORE.raw_config = config
-
     # 1.1. Merge packages
     if CONF_PACKAGES in config:
         from esphome.components.packages import merge_packages
 
         config = merge_packages(config)
 
+    CORE.raw_config = config
+
     # 1.2. Resolve !extend and !remove and check for REPLACEME
     # After this step, there will not be any Extend or Remove values in the config anymore
     try:
diff --git a/esphome/config_validation.py b/esphome/config_validation.py
index c52b79112..08fffa6ce 100644
--- a/esphome/config_validation.py
+++ b/esphome/config_validation.py
@@ -71,6 +71,7 @@ from esphome.const import (
     PLATFORM_ESP32,
     PLATFORM_ESP8266,
     PLATFORM_RP2040,
+    SCHEDULER_DONT_RUN,
     TYPE_GIT,
     TYPE_LOCAL,
     VALID_SUBSTITUTIONS_CHARACTERS,
@@ -894,7 +895,7 @@ def time_period_in_minutes_(value):
 
 def update_interval(value):
     if value == "never":
-        return 4294967295  # uint32_t max
+        return TimePeriodMilliseconds(milliseconds=SCHEDULER_DONT_RUN)
     return positive_time_period_milliseconds(value)
 
 
@@ -2009,7 +2010,7 @@ def polling_component_schema(default_update_interval):
     if default_update_interval is None:
         return COMPONENT_SCHEMA.extend(
             {
-                Required(CONF_UPDATE_INTERVAL): default_update_interval,
+                Required(CONF_UPDATE_INTERVAL): update_interval,
             }
         )
     assert isinstance(default_update_interval, str)
diff --git a/esphome/const.py b/esphome/const.py
index 61bdc7df8..916136a69 100644
--- a/esphome/const.py
+++ b/esphome/const.py
@@ -4,7 +4,7 @@ from enum import Enum
 
 from esphome.enum import StrEnum
 
-__version__ = "2025.12.0b2"
+__version__ = "2025.12.0b3"
 
 ALLOWED_NAME_CHARS = "abcdefghijklmnopqrstuvwxyz0123456789-_"
 VALID_SUBSTITUTIONS_CHARACTERS = (
diff --git a/esphome/core/progmem.h b/esphome/core/progmem.h
index 67131fd11..f9508945e 100644
--- a/esphome/core/progmem.h
+++ b/esphome/core/progmem.h
@@ -1,16 +1,16 @@
 #pragma once
 
 // Platform-agnostic macros for PROGMEM string handling
-// On ESP32 (both Arduino and IDF): Use plain strings (no PROGMEM)
 // On ESP8266/Arduino: Use Arduino's F() macro for PROGMEM strings
+// On other platforms: Use plain strings (no PROGMEM)
 
-#ifdef USE_ESP32
-#define ESPHOME_F(string_literal) (string_literal)
-#define ESPHOME_PGM_P const char *
-#define ESPHOME_strncpy_P strncpy
-#else
-// ESP8266 and other Arduino platforms use Arduino macros
+#ifdef USE_ESP8266
+// ESP8266 uses Arduino macros
 #define ESPHOME_F(string_literal) F(string_literal)
 #define ESPHOME_PGM_P PGM_P
 #define ESPHOME_strncpy_P strncpy_P
+#else
+#define ESPHOME_F(string_literal) (string_literal)
+#define ESPHOME_PGM_P const char *
+#define ESPHOME_strncpy_P strncpy
 #endif
diff --git a/esphome/dashboard/web_server.py b/esphome/dashboard/web_server.py
index 804a2b99a..f94d8eea2 100644
--- a/esphome/dashboard/web_server.py
+++ b/esphome/dashboard/web_server.py
@@ -164,8 +164,24 @@ def websocket_method(name):
     return wrap
 
 
+class CheckOriginMixin:
+    """Mixin to handle WebSocket origin checks for reverse proxy setups."""
+
+    def check_origin(self, origin: str) -> bool:
+        if "ESPHOME_TRUSTED_DOMAINS" not in os.environ:
+            return super().check_origin(origin)
+        trusted_domains = [
+            s.strip() for s in os.environ["ESPHOME_TRUSTED_DOMAINS"].split(",")
+        ]
+        url = urlparse(origin)
+        if url.hostname in trusted_domains:
+            return True
+        _LOGGER.info("check_origin %s, domain is not trusted", origin)
+        return False
+
+
 @websocket_class
-class EsphomeCommandWebSocket(tornado.websocket.WebSocketHandler):
+class EsphomeCommandWebSocket(CheckOriginMixin, tornado.websocket.WebSocketHandler):
     """Base class for ESPHome websocket commands."""
 
     def __init__(
@@ -183,18 +199,6 @@ class EsphomeCommandWebSocket(tornado.websocket.WebSocketHandler):
         # use Popen() with a reading thread instead
         self._use_popen = os.name == "nt"
 
-    def check_origin(self, origin):
-        if "ESPHOME_TRUSTED_DOMAINS" not in os.environ:
-            return super().check_origin(origin)
-        trusted_domains = [
-            s.strip() for s in os.environ["ESPHOME_TRUSTED_DOMAINS"].split(",")
-        ]
-        url = urlparse(origin)
-        if url.hostname in trusted_domains:
-            return True
-        _LOGGER.info("check_origin %s, domain is not trusted", origin)
-        return False
-
     def open(self, *args: str, **kwargs: str) -> None:
         """Handle new WebSocket connection."""
         # Ensure messages from the subprocess are sent immediately
@@ -601,7 +605,7 @@ DASHBOARD_SUBSCRIBER = DashboardSubscriber()
 
 
 @websocket_class
-class DashboardEventsWebSocket(tornado.websocket.WebSocketHandler):
+class DashboardEventsWebSocket(CheckOriginMixin, tornado.websocket.WebSocketHandler):
     """WebSocket handler for real-time dashboard events."""
 
     _event_listeners: list[Callable[[], None]] | None = None
diff --git a/esphome/espota2.py b/esphome/espota2.py
index c29506224..6349ad0fa 100644
--- a/esphome/espota2.py
+++ b/esphome/espota2.py
@@ -322,8 +322,8 @@ def perform_ota(
         hash_func, nonce_size, hash_name = _AUTH_METHODS[auth]
         perform_auth(sock, password, hash_func, nonce_size, hash_name)
 
-    # Set higher timeout during upload
-    sock.settimeout(30.0)
+    # Timeout must match device-side OTA_SOCKET_TIMEOUT_DATA to prevent premature failures
+    sock.settimeout(90.0)
 
     upload_size = len(upload_contents)
     upload_size_encoded = [
diff --git a/tests/component_tests/packages/test_packages.py b/tests/component_tests/packages/test_packages.py
index 3829e540d..22fb2c4e3 100644
--- a/tests/component_tests/packages/test_packages.py
+++ b/tests/component_tests/packages/test_packages.py
@@ -6,6 +6,7 @@ from unittest.mock import MagicMock, patch
 import pytest
 
 from esphome.components.packages import CONFIG_SCHEMA, do_packages_pass, merge_packages
+import esphome.config as config_module
 from esphome.config import resolve_extend_remove
 from esphome.config_helpers import Extend, Remove
 import esphome.config_validation as cv
@@ -33,6 +34,7 @@ from esphome.const import (
     CONF_VARS,
     CONF_WIFI,
 )
+from esphome.core import CORE
 from esphome.util import OrderedDict
 
 # Test strings
@@ -991,3 +993,35 @@ def test_package_merge_invalid(invalid_package) -> None:
 
     with pytest.raises(cv.Invalid):
         merge_packages(config)
+
+
+def test_raw_config_contains_merged_esphome_from_package(tmp_path) -> None:
+    """Test that CORE.raw_config contains esphome section from merged package.
+
+    This is a regression test for the bug where CORE.raw_config was set before
+    packages were merged, causing KeyError when components accessed
+    CORE.raw_config[CONF_ESPHOME] and the esphome section came from a package.
+    """
+    # Create a config where esphome section comes from a package
+    test_config = OrderedDict()
+    test_config[CONF_PACKAGES] = {
+        "base": {
+            CONF_ESPHOME: {CONF_NAME: TEST_DEVICE_NAME},
+        }
+    }
+    test_config["esp32"] = {"board": "esp32dev"}
+
+    # Set up CORE for the test
+    test_yaml = tmp_path / "test.yaml"
+    test_yaml.write_text("# test config")
+    CORE.reset()
+    CORE.config_path = test_yaml
+
+    # Call validate_config - this should merge packages and set CORE.raw_config
+    config_module.validate_config(test_config, {})
+
+    # Verify that CORE.raw_config contains the esphome section from the package
+    assert CONF_ESPHOME in CORE.raw_config, (
+        "CORE.raw_config should contain esphome section after package merge"
+    )
+    assert CORE.raw_config[CONF_ESPHOME][CONF_NAME] == TEST_DEVICE_NAME
diff --git a/tests/components/cc1101/common.yaml b/tests/components/cc1101/common.yaml
index 9373ca43e..93f03e582 100644
--- a/tests/components/cc1101/common.yaml
+++ b/tests/components/cc1101/common.yaml
@@ -1,13 +1,26 @@
 cc1101:
   id: transceiver
   cs_pin: ${cs_pin}
+  gdo0_pin: ${gdo0_pin}
   frequency: 433.92MHz
   if_frequency: 153kHz
   filter_bandwidth: 203kHz
   channel: 0
   channel_spacing: 200kHz
-  symbol_rate: 5000
-  modulation_type: ASK/OOK
+  symbol_rate: 4800
+  modulation_type: GFSK
+  packet_mode: true
+  packet_length: 8
+  crc_enable: true
+  whitening: false
+  sync_mode: "16/16"
+  sync0: 0x91
+  sync1: 0xD3
+  num_preamble: 2
+  on_packet:
+    then:
+      - lambda: |-
+          ESP_LOGD("cc1101", "packet %s rssi %.1f dBm lqi %u", format_hex(x).c_str(), rssi, lqi);
 
 button:
   - platform: template
@@ -18,3 +31,7 @@ button:
         - cc1101.begin_rx: transceiver
         - cc1101.set_idle: transceiver
         - cc1101.reset: transceiver
+        - cc1101.send_packet:
+            data: [0x12, 0x34, 0x56, 0x78, 0x90, 0xab, 0xcd, 0xef]
+        - cc1101.send_packet: !lambda |-
+            return {0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08};
diff --git a/tests/components/cc1101/test.esp32-idf.yaml b/tests/components/cc1101/test.esp32-idf.yaml
index e07562967..966f11bb6 100644
--- a/tests/components/cc1101/test.esp32-idf.yaml
+++ b/tests/components/cc1101/test.esp32-idf.yaml
@@ -1,8 +1,8 @@
 substitutions:
   cs_pin: GPIO5
+  gdo0_pin: GPIO4
 
 packages:
   spi: !include ../../test_build_components/common/spi/esp32-idf.yaml
-  remote_receiver: !include ../../test_build_components/common/remote_receiver/esp32-idf.yaml
 
 <<: !include common.yaml
diff --git a/tests/components/cc1101/test.esp8266.yaml b/tests/components/cc1101/test.esp8266.yaml
index 7900658bc..6f0f07850 100644
--- a/tests/components/cc1101/test.esp8266.yaml
+++ b/tests/components/cc1101/test.esp8266.yaml
@@ -1,8 +1,8 @@
 substitutions:
   cs_pin: GPIO5
+  gdo0_pin: GPIO4
 
 packages:
   spi: !include ../../test_build_components/common/spi/esp8266-ard.yaml
-  remote_receiver: !include ../../test_build_components/common/remote_receiver/esp8266-ard.yaml
 
 <<: !include common.yaml
diff --git a/tests/components/espnow/common.yaml b/tests/components/espnow/common.yaml
index 895ffb9d1..b724af54e 100644
--- a/tests/components/espnow/common.yaml
+++ b/tests/components/espnow/common.yaml
@@ -62,7 +62,7 @@ packet_transport:
     sensors:
       - temp_sensor
     providers:
-      - name: test_provider
+      - name: test-provider
         encryption:
           key: "0123456789abcdef0123456789abcdef"
 
@@ -71,6 +71,6 @@ sensor:
     id: temp_sensor
 
   - platform: packet_transport
-    provider: test_provider
+    provider: test-provider
     remote_id: temp_sensor
     id: remote_temp
diff --git a/tests/components/ethernet/test-lan8720-with-expander.esp32-idf.yaml b/tests/components/ethernet/test-lan8720-with-expander.esp32-idf.yaml
new file mode 100644
index 000000000..09da8d90d
--- /dev/null
+++ b/tests/components/ethernet/test-lan8720-with-expander.esp32-idf.yaml
@@ -0,0 +1,15 @@
+<<: !include common-lan8720.yaml
+
+sn74hc165:
+  - id: sn74hc165_hub
+    clock_pin: GPIO13
+    data_pin: GPIO14
+    load_pin: GPIO15
+    sr_count: 3
+
+binary_sensor:
+  - platform: gpio
+    pin:
+      sn74hc165: sn74hc165_hub
+      number: 19
+    id: relay_2
diff --git a/tests/dashboard/test_web_server.py b/tests/dashboard/test_web_server.py
index 385841b1c..10ca6061e 100644
--- a/tests/dashboard/test_web_server.py
+++ b/tests/dashboard/test_web_server.py
@@ -1567,3 +1567,90 @@ async def test_dashboard_yaml_loading_with_packages_and_secrets(
     # If we get here, secret resolution worked!
     assert "esphome" in config
     assert config["esphome"]["name"] == "test-download-secrets"
+
+
+@pytest.mark.asyncio
+async def test_websocket_check_origin_default_same_origin(
+    dashboard: DashboardTestHelper,
+) -> None:
+    """Test WebSocket uses default same-origin check when ESPHOME_TRUSTED_DOMAINS not set."""
+    # Ensure ESPHOME_TRUSTED_DOMAINS is not set
+    env = os.environ.copy()
+    env.pop("ESPHOME_TRUSTED_DOMAINS", None)
+    with patch.dict(os.environ, env, clear=True):
+        from tornado.httpclient import HTTPRequest
+
+        url = f"ws://127.0.0.1:{dashboard.port}/events"
+        # Same origin should work (default Tornado behavior)
+        request = HTTPRequest(
+            url, headers={"Origin": f"http://127.0.0.1:{dashboard.port}"}
+        )
+        ws = await websocket_connect(request)
+        try:
+            msg = await ws.read_message()
+            assert msg is not None
+            data = json.loads(msg)
+            assert data["event"] == "initial_state"
+        finally:
+            ws.close()
+
+
+@pytest.mark.asyncio
+async def test_websocket_check_origin_trusted_domain(
+    dashboard: DashboardTestHelper,
+) -> None:
+    """Test WebSocket accepts connections from trusted domains."""
+    with patch.dict(os.environ, {"ESPHOME_TRUSTED_DOMAINS": "trusted.example.com"}):
+        from tornado.httpclient import HTTPRequest
+
+        url = f"ws://127.0.0.1:{dashboard.port}/events"
+        request = HTTPRequest(url, headers={"Origin": "https://trusted.example.com"})
+        ws = await websocket_connect(request)
+        try:
+            # Should receive initial state
+            msg = await ws.read_message()
+            assert msg is not None
+            data = json.loads(msg)
+            assert data["event"] == "initial_state"
+        finally:
+            ws.close()
+
+
+@pytest.mark.asyncio
+async def test_websocket_check_origin_untrusted_domain(
+    dashboard: DashboardTestHelper,
+) -> None:
+    """Test WebSocket rejects connections from untrusted domains."""
+    with patch.dict(os.environ, {"ESPHOME_TRUSTED_DOMAINS": "trusted.example.com"}):
+        from tornado.httpclient import HTTPRequest
+
+        url = f"ws://127.0.0.1:{dashboard.port}/events"
+        request = HTTPRequest(url, headers={"Origin": "https://untrusted.example.com"})
+        with pytest.raises(HTTPClientError) as exc_info:
+            await websocket_connect(request)
+        # Should get HTTP 403 Forbidden due to origin check failure
+        assert exc_info.value.code == 403
+
+
+@pytest.mark.asyncio
+async def test_websocket_check_origin_multiple_trusted_domains(
+    dashboard: DashboardTestHelper,
+) -> None:
+    """Test WebSocket accepts connections from multiple trusted domains."""
+    with patch.dict(
+        os.environ,
+        {"ESPHOME_TRUSTED_DOMAINS": "first.example.com, second.example.com"},
+    ):
+        from tornado.httpclient import HTTPRequest
+
+        url = f"ws://127.0.0.1:{dashboard.port}/events"
+        # Test second domain in list (with space after comma)
+        request = HTTPRequest(url, headers={"Origin": "https://second.example.com"})
+        ws = await websocket_connect(request)
+        try:
+            msg = await ws.read_message()
+            assert msg is not None
+            data = json.loads(msg)
+            assert data["event"] == "initial_state"
+        finally:
+            ws.close()