feat: game integration system

Receive real-time events from games (CS2, Dota 2, LoL, etc.) and drive
LED effects through the existing color strip and value source pipelines.

Core:
- GameEventBus (thread-safe pub/sub) with standardized 23-type event vocabulary
- GameAdapter ABC + AdapterRegistry + MappingAdapter (YAML-driven)
- Built-in adapters: CS2 GSI, Dota 2 GSI, LoL Live Client, Generic Webhook
- Community YAML adapters: Minecraft, Valorant, Rocket League
- GameEventColorStripStream with 5 effects (flash/pulse/sweep/color_shift/breathing)
- GameEventValueSource with EMA smoothing and timeout
- 4 built-in effect presets (FPS Combat, MOBA Health, Racing, Generic Alert)
- Auto-setup for Valve GSI games (Steam path detection, cfg file writing)
- Demo capture engine exposed to non-demo mode

Frontend:
- Game tab in Streams tree navigation with integration cards
- Game integration editor modal with adapter picker, config fields, event mappings
- game_event source type in CSS and ValueSource editors
- Setup instructions overlay (markdown rendered)
- Live event monitor and connection test

API:
- Full CRUD for game integrations
- Event ingestion endpoint (adapter-level auth)
- Adapter metadata, presets, auto-setup, status/diagnostics endpoints

server/src/wled_controller/main.py

@@ -44,6 +44,10 @@ from wled_controller.core.weather.weather_manager import WeatherManager
 from wled_controller.storage.home_assistant_store import HomeAssistantStore
 from wled_controller.core.home_assistant.ha_manager import HomeAssistantManager
 from wled_controller.core.automations.automation_engine import AutomationEngine
+from wled_controller.storage.game_integration_store import GameIntegrationStore
+from wled_controller.core.game_integration.event_bus import GameEventBus
+import wled_controller.core.game_integration.adapters  # noqa: F401 — register built-in adapters
+from wled_controller.core.game_integration.community_loader import register_community_adapters
 from wled_controller.core.mqtt.mqtt_service import MQTTService
 from wled_controller.core.devices.mqtt_client import set_mqtt_service
 from wled_controller.core.backup.auto_backup import AutoBackupEngine
@@ -97,6 +101,9 @@ sync_clock_manager = SyncClockManager(sync_clock_store)
 weather_manager = WeatherManager(weather_source_store)
 ha_store = HomeAssistantStore(db)
 ha_manager = HomeAssistantManager(ha_store)
+game_integration_store = GameIntegrationStore(db)
+game_event_bus = GameEventBus()
+register_community_adapters()
 
 processor_manager = ProcessorManager(
     ProcessorDependencies(
@@ -114,6 +121,7 @@ processor_manager = ProcessorManager(
         weather_manager=weather_manager,
         asset_store=asset_store,
         ha_manager=ha_manager,
+        game_event_bus=game_event_bus,
     )
 )
 
@@ -212,6 +220,8 @@ async def lifespan(app: FastAPI):
         asset_store=asset_store,
         ha_store=ha_store,
         ha_manager=ha_manager,
+        game_integration_store=game_integration_store,
+        game_event_bus=game_event_bus,
     )
 
     # Register devices in processor manager for health monitoring