Add a notice registry and System Health tab (#24178)

* add a notice registry and System Health tab

Problems Frigate detects on its own (ffmpeg crash loops, stuck detectors, failed model downloads, recordings deleted before their retention period) only ever existed as log lines. This adds a `NoticeRegistry` in the main process backed by two tables, an `update_notice` IPC topic so producers in other processes can reach it through the dispatcher, an admin-only API and websocket topic, and a Health tab that lists them. Kinds declare their own mode, severity, and category in one place: state notices are resolved by their producer, event notices are dismissed by the user.

* treat a prerelease as behind its final release

* fix notices clearing early

* rename menu items and update docs

* don't resolve the update notice on a failed version lookup

frigate/api/fastapi_app.py

@@ -24,6 +24,7 @@ from frigate.api import (
     hardware,
     media,
     motion_search,
+    notices,
     notification,
     preview,
     record,
@@ -41,6 +42,7 @@ from frigate.config.profile_manager import ProfileManager
 from frigate.debug_replay import DebugReplayManager, debug_replay_auto_stop_watchdog
 from frigate.embeddings import EmbeddingsContext
 from frigate.genai import GenAIClientManager
+from frigate.notices.registry import NoticeRegistry
 from frigate.ptz.onvif import OnvifController
 from frigate.stats.emitter import StatsEmitter
 from frigate.storage import StorageMaintainer
@@ -77,6 +79,7 @@ def create_fastapi_app(
     profile_manager: ProfileManager | None = None,
     enforce_default_admin: bool = True,
     config_holder: ConfigHolder | None = None,
+    notice_registry: NoticeRegistry | None = None,
 ):
     logger.info("Starting FastAPI app")
     app = FastAPI(
@@ -147,6 +150,7 @@ def create_fastapi_app(
     app.include_router(notification.router)
     app.include_router(export.router)
     app.include_router(hardware.router)
+    app.include_router(notices.router)
     app.include_router(event.router)
     app.include_router(media.router)
     app.include_router(motion_search.router)
@@ -163,6 +167,7 @@ def create_fastapi_app(
     app.camera_error_image = None
     app.onvif = onvif
     app.stats_emitter = stats_emitter
+    app.notice_registry = notice_registry
     app.event_metadata_updater = event_metadata_updater
     app.config_publisher = config_publisher
     app.replay_manager = replay_manager