fix(cli): skip redundant settings uploads when unchanged

Only upload settings when edited values differ from current device settings to avoid unnecessary resets.

Co-authored-by: Cursor <cursoragent@cursor.com>

cli.py

@@ -753,10 +753,18 @@ Examples:
         if not edits and args.preset is None:
             return
 
-    # 2. Edit: apply edits to downloaded settings
-    if edits:
-        print(f"Applying {len(edits)} edit(s)...", file=sys.stderr)
-        settings.update(edits)
+    # 2. Edit: only apply/upload settings when values actually change
+    changed_edits: Dict[str, Any] = {}
+    for key, value in edits.items():
+        if settings.get(key) != value:
+            changed_edits[key] = value
+
+    if edits and not changed_edits:
+        print("No settings changes detected; skipping settings upload.", file=sys.stderr)
+
+    if changed_edits:
+        print(f"Applying {len(changed_edits)} setting change(s)...", file=sys.stderr)
+        settings.update(changed_edits)
 
     print_settings(settings)
 
@@ -787,7 +795,7 @@ Examples:
             sys.exit(1)
 
     # 3b. Settings upload (resets device)
-    if edits:
+    if changed_edits:
         try:
             print(f"\nUploading settings to {args.port}...", file=sys.stderr)
             upload_settings(args.port, settings)