updated admin page with more functionality, simplified burger menu and added many-to-many parent-child relationship

src/baby_monitor/main.py

@@ -119,6 +119,18 @@ def serve_sleep() -> FileResponse:
     return FileResponse(static_path / "sleep.html")
 
 
+@app.get("/menu.css", include_in_schema=False)
+def serve_menu_css() -> FileResponse:
+    """Serve the shared menu CSS."""
+    return FileResponse(static_path / "menu.css")
+
+
+@app.get("/menu.js", include_in_schema=False)
+def serve_menu_js() -> FileResponse:
+    """Serve the shared menu JavaScript."""
+    return FileResponse(static_path / "menu.js")
+
+
 @app.get("/api/")
 def read_root(token: Annotated[str, Depends(verify_token)]) -> dict:
     """API root endpoint (requires authentication)."""