feat(ui): refresh preset data flow and bump driver pointer

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

src/controllers/pattern.py

@@ -367,6 +367,7 @@ async def create_driver_pattern(request):
     Body JSON:
       name, code (required),
       min_delay, max_delay, max_colors (optional numbers),
+      has_background (optional bool),
       n1..n8 (optional string labels),
       overwrite (optional, default true).
     """
@@ -409,6 +410,9 @@ async def create_driver_pattern(request):
                 "Content-Type": "application/json"
             }
 
+    if "has_background" in data:
+        meta["has_background"] = bool(data.get("has_background"))
+
     for i in range(1, 9):
         nk = "n%d" % i
         if nk not in data: