feat: implement background color and night mode settings in the TV control app

functions/control/main.py

@@ -18,7 +18,15 @@ DEFAULT_STATE = {
     },
     "data_cards": [],
     "settings": {
-        "background_url": ""
+        "background_url": "",
+        "background_color": "#000000",
+        "night_mode": {
+            "enabled": False,
+            "start_time": "22:00",
+            "end_time": "07:00",
+            "message": "Good Night",
+            "dim_background": True
+        }
     }
 }
 
@@ -106,9 +114,16 @@ def main(args):
             _write_state(current)
             return {"status": "success"}
         elif route == "push_settings":
-            bg_url = body.get("background_url", "")
             current = _read_state()
-            current.setdefault("settings", {})["background_url"] = bg_url
+            settings = current.setdefault("settings", {})
+            # Merge scalar settings keys
+            for key in ["background_url", "background_color"]:
+                if key in body:
+                    settings[key] = body[key]
+            # Deep-merge night_mode sub-object
+            if "night_mode" in body:
+                nm = settings.setdefault("night_mode", {})
+                nm.update(body["night_mode"])
             _write_state(current)
             return {"status": "success"}
         elif route == "push_upload_images":