diff --git a/esphome/components/esp32_hosted/__init__.py b/esphome/components/esp32_hosted/__init__.py
index e40431c851..170f436f02 100644
--- a/esphome/components/esp32_hosted/__init__.py
+++ b/esphome/components/esp32_hosted/__init__.py
@@ -12,6 +12,7 @@ from esphome.const import (
     KEY_FRAMEWORK_VERSION,
 )
 from esphome.core import CORE
+from esphome.cpp_generator import add_define
 
 CODEOWNERS = ["@swoboda1337"]
 
@@ -42,6 +43,7 @@ CONFIG_SCHEMA = cv.All(
 
 
 async def to_code(config):
+    add_define("USE_ESP32_HOSTED")
     if config[CONF_ACTIVE_HIGH]:
         esp32.add_idf_sdkconfig_option(
             "CONFIG_ESP_HOSTED_SDIO_RESET_ACTIVE_HIGH",
diff --git a/esphome/components/mhz19/mhz19.cpp b/esphome/components/mhz19/mhz19.cpp
index 00e6e14d85..259d597b44 100644
--- a/esphome/components/mhz19/mhz19.cpp
+++ b/esphome/components/mhz19/mhz19.cpp
@@ -155,6 +155,9 @@ void MHZ19Component::dump_config() {
     case MHZ19_DETECTION_RANGE_0_10000PPM:
       range_str = "0 to 10000ppm";
       break;
+    default:
+      range_str = "default";
+      break;
   }
   ESP_LOGCONFIG(TAG, "  Detection range: %s", range_str);
 }
diff --git a/esphome/components/template/water_heater/__init__.py b/esphome/components/template/water_heater/__init__.py
index 716289035a..bddd378b23 100644
--- a/esphome/components/template/water_heater/__init__.py
+++ b/esphome/components/template/water_heater/__init__.py
@@ -20,7 +20,7 @@ from .. import template_ns
 CONF_CURRENT_TEMPERATURE = "current_temperature"
 
 TemplateWaterHeater = template_ns.class_(
-    "TemplateWaterHeater", water_heater.WaterHeater
+    "TemplateWaterHeater", cg.Component, water_heater.WaterHeater
 )
 
 TemplateWaterHeaterPublishAction = template_ns.class_(
@@ -36,24 +36,29 @@ RESTORE_MODES = {
     "RESTORE_AND_CALL": TemplateWaterHeaterRestoreMode.WATER_HEATER_RESTORE_AND_CALL,
 }
 
-CONFIG_SCHEMA = water_heater.water_heater_schema(TemplateWaterHeater).extend(
-    {
-        cv.Optional(CONF_OPTIMISTIC, default=True): cv.boolean,
-        cv.Optional(CONF_SET_ACTION): automation.validate_automation(single=True),
-        cv.Optional(CONF_RESTORE_MODE, default="NO_RESTORE"): cv.enum(
-            RESTORE_MODES, upper=True
-        ),
-        cv.Optional(CONF_CURRENT_TEMPERATURE): cv.returning_lambda,
-        cv.Optional(CONF_MODE): cv.returning_lambda,
-        cv.Optional(CONF_SUPPORTED_MODES): cv.ensure_list(
-            water_heater.validate_water_heater_mode
-        ),
-    }
+CONFIG_SCHEMA = (
+    water_heater.water_heater_schema(TemplateWaterHeater)
+    .extend(
+        {
+            cv.Optional(CONF_OPTIMISTIC, default=True): cv.boolean,
+            cv.Optional(CONF_SET_ACTION): automation.validate_automation(single=True),
+            cv.Optional(CONF_RESTORE_MODE, default="NO_RESTORE"): cv.enum(
+                RESTORE_MODES, upper=True
+            ),
+            cv.Optional(CONF_CURRENT_TEMPERATURE): cv.returning_lambda,
+            cv.Optional(CONF_MODE): cv.returning_lambda,
+            cv.Optional(CONF_SUPPORTED_MODES): cv.ensure_list(
+                water_heater.validate_water_heater_mode
+            ),
+        }
+    )
+    .extend(cv.COMPONENT_SCHEMA)
 )
 
 
 async def to_code(config: ConfigType) -> None:
     var = cg.new_Pvariable(config[CONF_ID])
+    await cg.register_component(var, config)
     await water_heater.register_water_heater(var, config)
 
     cg.add(var.set_optimistic(config[CONF_OPTIMISTIC]))
diff --git a/esphome/components/template/water_heater/template_water_heater.cpp b/esphome/components/template/water_heater/template_water_heater.cpp
index 5ae5c30f36..e89c96ca48 100644
--- a/esphome/components/template/water_heater/template_water_heater.cpp
+++ b/esphome/components/template/water_heater/template_water_heater.cpp
@@ -10,7 +10,7 @@ TemplateWaterHeater::TemplateWaterHeater() : set_trigger_(new Trigger<>()) {}
 void TemplateWaterHeater::setup() {
   if (this->restore_mode_ == TemplateWaterHeaterRestoreMode::WATER_HEATER_RESTORE ||
       this->restore_mode_ == TemplateWaterHeaterRestoreMode::WATER_HEATER_RESTORE_AND_CALL) {
-    auto restore = this->restore_state();
+    auto restore = this->restore_state_();
 
     if (restore.has_value()) {
       restore->perform();
diff --git a/esphome/components/template/water_heater/template_water_heater.h b/esphome/components/template/water_heater/template_water_heater.h
index e5f51b72dc..c2a2dcbb23 100644
--- a/esphome/components/template/water_heater/template_water_heater.h
+++ b/esphome/components/template/water_heater/template_water_heater.h
@@ -13,7 +13,7 @@ enum TemplateWaterHeaterRestoreMode {
   WATER_HEATER_RESTORE_AND_CALL,
 };
 
-class TemplateWaterHeater : public water_heater::WaterHeater {
+class TemplateWaterHeater : public Component, public water_heater::WaterHeater {
  public:
   TemplateWaterHeater();
 
diff --git a/esphome/components/water_heater/__init__.py b/esphome/components/water_heater/__init__.py
index 5420e7c435..db32c2d919 100644
--- a/esphome/components/water_heater/__init__.py
+++ b/esphome/components/water_heater/__init__.py
@@ -18,7 +18,7 @@ CODEOWNERS = ["@dhoeben"]
 IS_PLATFORM_COMPONENT = True
 
 water_heater_ns = cg.esphome_ns.namespace("water_heater")
-WaterHeater = water_heater_ns.class_("WaterHeater", cg.EntityBase, cg.Component)
+WaterHeater = water_heater_ns.class_("WaterHeater", cg.EntityBase)
 WaterHeaterCall = water_heater_ns.class_("WaterHeaterCall")
 WaterHeaterTraits = water_heater_ns.class_("WaterHeaterTraits")
 
@@ -46,7 +46,7 @@ _WATER_HEATER_SCHEMA = cv.ENTITY_BASE_SCHEMA.extend(
             }
         ),
     }
-).extend(cv.COMPONENT_SCHEMA)
+)
 
 _WATER_HEATER_SCHEMA.add_extra(entity_duplicate_validator("water_heater"))
 
@@ -91,8 +91,6 @@ async def register_water_heater(var: cg.Pvariable, config: ConfigType) -> cg.Pva
 
     cg.add_define("USE_WATER_HEATER")
 
-    await cg.register_component(var, config)
-
     cg.add(cg.App.register_water_heater(var))
 
     CORE.register_platform_component("water_heater", var)
diff --git a/esphome/components/water_heater/water_heater.cpp b/esphome/components/water_heater/water_heater.cpp
index 7b947057e1..fbb4181209 100644
--- a/esphome/components/water_heater/water_heater.cpp
+++ b/esphome/components/water_heater/water_heater.cpp
@@ -146,10 +146,6 @@ void WaterHeaterCall::validate_() {
   }
 }
 
-void WaterHeater::setup() {
-  this->pref_ = global_preferences->make_preference<SavedWaterHeaterState>(this->get_preference_hash());
-}
-
 void WaterHeater::publish_state() {
   auto traits = this->get_traits();
   ESP_LOGD(TAG,
@@ -188,7 +184,8 @@ void WaterHeater::publish_state() {
   this->pref_.save(&saved);
 }
 
-optional<WaterHeaterCall> WaterHeater::restore_state() {
+optional<WaterHeaterCall> WaterHeater::restore_state_() {
+  this->pref_ = global_preferences->make_preference<SavedWaterHeaterState>(this->get_preference_hash());
   SavedWaterHeaterState recovered{};
   if (!this->pref_.load(&recovered))
     return {};
diff --git a/esphome/components/water_heater/water_heater.h b/esphome/components/water_heater/water_heater.h
index e223dd59b2..84fc46d208 100644
--- a/esphome/components/water_heater/water_heater.h
+++ b/esphome/components/water_heater/water_heater.h
@@ -177,7 +177,7 @@ class WaterHeaterTraits {
   WaterHeaterModeMask supported_modes_;
 };
 
-class WaterHeater : public EntityBase, public Component {
+class WaterHeater : public EntityBase {
  public:
   WaterHeaterMode get_mode() const { return this->mode_; }
   float get_current_temperature() const { return this->current_temperature_; }
@@ -204,16 +204,15 @@ class WaterHeater : public EntityBase, public Component {
 #endif
   virtual void control(const WaterHeaterCall &call) = 0;
 
-  void setup() override;
-
-  optional<WaterHeaterCall> restore_state();
-
  protected:
   virtual WaterHeaterTraits traits() = 0;
 
   /// Log the traits of this water heater for dump_config().
   void dump_traits_(const char *tag);
 
+  /// Restore the state of the water heater, call this from your setup() method.
+  optional<WaterHeaterCall> restore_state_();
+
   /// Set the mode of the water heater. Should only be called from control().
   void set_mode_(WaterHeaterMode mode) { this->mode_ = mode; }
   /// Set the target temperature of the water heater. Should only be called from control().
diff --git a/esphome/components/wifi/wifi_component_esp8266.cpp b/esphome/components/wifi/wifi_component_esp8266.cpp
index de0600cf5b..91db7ae0eb 100644
--- a/esphome/components/wifi/wifi_component_esp8266.cpp
+++ b/esphome/components/wifi/wifi_component_esp8266.cpp
@@ -698,6 +698,10 @@ bool WiFiComponent::wifi_scan_start_(bool passive) {
   if (!this->wifi_mode_(true, {}))
     return false;
 
+  // Reset scan_done_ before starting new scan to prevent stale flag from previous scan
+  // (e.g., roaming scan completed just before unexpected disconnect)
+  this->scan_done_ = false;
+
   struct scan_config config {};
   memset(&config, 0, sizeof(config));
   config.ssid = nullptr;
diff --git a/esphome/components/wifi/wifi_component_esp_idf.cpp b/esphome/components/wifi/wifi_component_esp_idf.cpp
index 99474ac2f8..15fd407e3c 100644
--- a/esphome/components/wifi/wifi_component_esp_idf.cpp
+++ b/esphome/components/wifi/wifi_component_esp_idf.cpp
@@ -14,6 +14,7 @@
 
 #include <algorithm>
 #include <cinttypes>
+#include <memory>
 #include <utility>
 #ifdef USE_WIFI_WPA2_EAP
 #if (ESP_IDF_VERSION_MAJOR >= 5) && (ESP_IDF_VERSION_MINOR >= 1)
@@ -828,16 +829,29 @@ void WiFiComponent::wifi_process_event_(IDFWiFiEvent *data) {
 
     uint16_t number = it.number;
     scan_result_.init(number);
-
-    // Process one record at a time to avoid large buffer allocation
-    wifi_ap_record_t record;
+#ifdef USE_ESP32_HOSTED
+    // getting records one at a time fails on P4 with hosted esp32 WiFi coprocessor
+    // Presumably an upstream bug, work-around by getting all records at once
+    auto records = std::make_unique<wifi_ap_record_t[]>(number);
+    err = esp_wifi_scan_get_ap_records(&number, records.get());
+    if (err != ESP_OK) {
+      esp_wifi_clear_ap_list();
+      ESP_LOGW(TAG, "esp_wifi_scan_get_ap_records failed: %s", esp_err_to_name(err));
+      return;
+    }
     for (uint16_t i = 0; i < number; i++) {
+      wifi_ap_record_t &record = records[i];
+#else
+    // Process one record at a time to avoid large buffer allocation
+    for (uint16_t i = 0; i < number; i++) {
+      wifi_ap_record_t record;
       err = esp_wifi_scan_get_ap_record(&record);
       if (err != ESP_OK) {
         ESP_LOGW(TAG, "esp_wifi_scan_get_ap_record failed: %s", esp_err_to_name(err));
         esp_wifi_clear_ap_list();  // Free remaining records not yet retrieved
         break;
       }
+#endif  // USE_ESP32_HOSTED
       bssid_t bssid;
       std::copy(record.bssid, record.bssid + 6, bssid.begin());
       std::string ssid(reinterpret_cast<const char *>(record.ssid));
diff --git a/esphome/components/wifi/wifi_component_libretiny.cpp b/esphome/components/wifi/wifi_component_libretiny.cpp
index cc9f4ec193..20cd32fa8f 100644
--- a/esphome/components/wifi/wifi_component_libretiny.cpp
+++ b/esphome/components/wifi/wifi_component_libretiny.cpp
@@ -649,6 +649,10 @@ bool WiFiComponent::wifi_scan_start_(bool passive) {
   if (!this->wifi_mode_(true, {}))
     return false;
 
+  // Reset scan_done_ before starting new scan to prevent stale flag from previous scan
+  // (e.g., roaming scan completed just before unexpected disconnect)
+  this->scan_done_ = false;
+
   // need to use WiFi because of WiFiScanClass allocations :(
   int16_t err = WiFi.scanNetworks(true, true, passive, 200);
   if (err != WIFI_SCAN_RUNNING) {
diff --git a/esphome/core/defines.h b/esphome/core/defines.h
index 7c13823fba..e98cdd0ba0 100644
--- a/esphome/core/defines.h
+++ b/esphome/core/defines.h
@@ -42,6 +42,7 @@
 #define USE_DEVICES
 #define USE_DISPLAY
 #define USE_ENTITY_ICON
+#define USE_ESP32_HOSTED
 #define USE_ESP32_IMPROV_STATE_CALLBACK
 #define USE_EVENT
 #define USE_FAN