feat: settings page — PipeWire audio device + remote Whisper/Ollama config

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

api/router.py

@@ -279,6 +279,15 @@ async def create_combined_source(body: dict, user: dict = Depends(current_user))
     return {"device": "transkriptor-combined.monitor", "module_ids": ids}
 
 
+@router.get("/settings")
+async def settings_page_route(user: dict = Depends(current_user)):
+    from fastapi.responses import FileResponse, RedirectResponse
+    from pathlib import Path
+    if not user.get("is_admin"):
+        return RedirectResponse("/")
+    return FileResponse(str(Path(__file__).parent.parent / "frontend" / "settings.html"))
+
+
 @router.websocket("/ws")
 async def websocket_endpoint(ws: WebSocket):
     from auth import get_user_for_token