Fix persisted runtime camera toggles (#23734)

* preserve runtime camera toggles across config saves

Runtime toggles (camera on/off, detect, recordings, snapshots, audio) mutate the in-memory config and persist an override to .runtime_state.json. /api/config/set re-parses yaml into a fresh FrigateConfig and swaps it in, re-applying the yaml and profile layers but dropping the runtime layer, so a camera turned off from the dashboard came back on when an unrelated camera was saved. The workers were never notified, so it only appeared to come back: the UI streamed go2rtc while ffmpeg stayed stopped.

Extract the startup replay into Dispatcher.apply_runtime_state() and call it from config_set after the swap, re-layering the overrides and republishing them so workers and the UI reconverge.

Remove the broad clear_runtime_state() from ProfileManager.update_config, which is only ever reached from config_set: with a profile active, every save wiped every camera's overrides from disk. The broad wipe stays in activate_profile, where a real profile switch does invalidate the steady state. Saves still clear the keys they rewrote via clear_runtime_state_for_yaml_keys, so yaml wins where the two disagree.

* sync runtime config on camera delete and prune its overrides

Deleting a camera re-parsed yaml into a fresh FrigateConfig but only rebound app.frigate_config and genai_manager, never dispatcher.config (nor profile_manager, stats_emitter, or the runtime overrides). The API and the dispatcher then drifted onto different config objects until the next config save re-synced them, so the API reported surviving cameras with their yaml enabled state while the dispatcher still acted on their real runtime state.

Extract the config swap that config_set already does into a shared swap_runtime_config helper and call it from both sites, so every collaborator is rebound and the surviving cameras' runtime toggles are re-layered. Also drop the deleted camera's persisted overrides via a new clear_camera so a camera later added under the same name does not inherit them.

frigate/comms/dispatcher.py

@@ -404,38 +404,64 @@ class Dispatcher:
         for comm in self.comms:
             comm.stop()
 
-    def restore_runtime_state(self) -> None:
+    def apply_runtime_state(self) -> dict[str, dict[str, bool]]:
         """Replay persisted runtime overrides through the camera settings handlers.
 
-        Called once after Frigate startup completes so processing threads can
-        receive the resulting ``config_updater`` broadcasts. Unknown cameras
-        and topics are skipped; handler exceptions are logged and replay
-        continues for remaining entries.
+        Routing through the handlers (rather than mutating config directly) is
+        deliberate: they publish the ``config_updater`` broadcast and the
+        retained MQTT state as a side effect, so worker processes and the UI
+        converge on the replayed value. Unknown cameras and topics are skipped;
+        handler exceptions are logged and replay continues for the rest.
+
+        Returns:
+            The entries handed to a handler without raising, keyed by camera
+            then topic. A handler can still refuse the value internally (an ON
+            payload for a camera that is not enabled_in_config, for example),
+            so this is not proof the override took effect.
         """
         state = self._runtime_state.load()
+        applied: dict[str, dict[str, bool]] = {}
+
         for camera_name, features in state.items():
             if camera_name not in self.config.cameras:
                 continue
+
             for topic, value in features.items():
                 handler = self._camera_settings_handlers.get(topic)
+
                 if handler is None:
                     continue
+
                 payload = "ON" if value else "OFF"
+
                 try:
                     handler(camera_name, payload)
                 except Exception:
                     logger.exception(
-                        "Failed to restore runtime state %s.%s=%s",
+                        "Failed to apply runtime state %s.%s=%s",
                         camera_name,
                         topic,
                         payload,
                     )
                     continue
+
+                applied.setdefault(camera_name, {})[topic] = value
+
+        return applied
+
+    def restore_runtime_state(self) -> None:
+        """Replay persisted runtime overrides once Frigate startup completes.
+
+        Called after every ``config_updater`` subscriber is up so the resulting
+        broadcasts are not dropped by ZMQ PUB/SUB.
+        """
+        for camera_name, features in self.apply_runtime_state().items():
+            for topic, value in features.items():
                 logger.info(
                     "Restored runtime state: %s.%s=%s",
                     camera_name,
                     topic,
-                    payload,
+                    "ON" if value else "OFF",
                 )
 
     def clear_runtime_state_for_yaml_keys(self, dotted_keys: Iterable[str]) -> None:
@@ -458,6 +484,14 @@ class Dispatcher:
         """
         self._runtime_state.clear_all()
 
+    def clear_runtime_state_for_camera(self, camera: str) -> None:
+        """Drop all persisted runtime overrides for a deleted camera.
+
+        Called by camera deletion so a camera later added under the same name
+        does not inherit the removed camera's stale toggles.
+        """
+        self._runtime_state.clear_camera(camera)
+
     def _on_detect_command(self, camera_name: str, payload: str) -> None:
         """Callback for detect topic."""
         detect_settings = self.config.cameras[camera_name].detect