Adds website theme serialization system

backend/app/api/station_config.py

@@ -1,15 +1,20 @@
 """Station config router: read/update the singleton station branding config."""
 
+import logging
+
 from fastapi import APIRouter, Depends, HTTPException, status
 
 from app.auth import get_current_admin_user
 from app.database import get_session
 from app.models import StationConfig
 from app.schemas import StationConfigResponse, StationConfigUpdate
+from app.theme_export import write_theme_json
 from app.user_models import User
 from sqlalchemy import select
 from sqlalchemy.ext.asyncio import AsyncSession
 
+logger = logging.getLogger(__name__)
+
 router = APIRouter()
 
 
@@ -47,4 +52,11 @@ async def update_station_config(
 
     await session.commit()
     await session.refresh(config)
+
+    # Regenerate theme.json on disk (best-effort)
+    try:
+        await write_theme_json()
+    except Exception:
+        logger.warning("Failed to regenerate theme.json after config update", exc_info=True)
+
     return config