fix: Smart text object detection for layout customization

Instead of hardcoded object IDs, now dynamically finds and updates:
- Title text: Large text (fontSize > 100) or ID contains "title"
- Subtitle text: Smaller text or ID contains "subtitle"/"description"

Removes isFromLayout flag when updating to unlock editing.

Fixes text customization across all layout types.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <[email protected]>

mcp_server_comprehensive.py

@@ -418,17 +418,47 @@ async def create_thumbnail(inputs: Dict[str, Any]) -> Dict[str, Any]:
 
         # Update title if specified
         if title:
-            result = await execute_api_call(page, "updateText", "title-text", title)
-            results.append({"step": "update_title", "result": result})
-            # Unlock the layout object by removing isFromLayout flag
-            await execute_api_call(page, "updateObject", "title-text", {"isFromLayout": False})
+            # Get all objects to find text objects
+            objects_result = await execute_api_call(page, "listObjects", {})
+            if objects_result.get("success"):
+                objects = objects_result.get("objects", [])
+                text_objects = [obj for obj in objects if obj.get("type") == "text"]
+
+                # Update all text objects that contain title-like text or are large
+                for obj in text_objects:
+                    obj_id = obj.get("id")
+                    obj_text = obj.get("text", "")
+                    font_size = obj.get("fontSize", 0)
+
+                    # If it's a large text object (likely a title)
+                    if font_size > 100 or "title" in obj_id.lower():
+                        await execute_api_call(page, "updateObject", obj_id, {
+                            "text": title,
+                            "isFromLayout": False
+                        })
+                        results.append({"step": "update_title_text", "objectId": obj_id})
 
         # Update subtitle if specified
         if subtitle:
-            result = await execute_api_call(page, "updateText", "subtitle", subtitle)
-            results.append({"step": "update_subtitle", "result": result})
-            # Unlock the layout object by removing isFromLayout flag
-            await execute_api_call(page, "updateObject", "subtitle", {"isFromLayout": False})
+            # Get all objects to find subtitle text
+            objects_result = await execute_api_call(page, "listObjects", {})
+            if objects_result.get("success"):
+                objects = objects_result.get("objects", [])
+                text_objects = [obj for obj in objects if obj.get("type") == "text"]
+
+                # Find subtitle (smaller text, contains "subtitle" or "description")
+                for obj in text_objects:
+                    obj_id = obj.get("id")
+                    obj_text = obj.get("text", "").lower()
+                    font_size = obj.get("fontSize", 0)
+
+                    # Smaller text or contains subtitle/description keywords
+                    if (font_size < 100 and "subtitle" in obj_text) or "subtitle" in obj_id.lower() or "description" in obj_id.lower():
+                        await execute_api_call(page, "updateObject", obj_id, {
+                            "text": subtitle,
+                            "isFromLayout": False
+                        })
+                        results.append({"step": "update_subtitle_text", "objectId": obj_id})
 
         # Add Huggy if specified
         if huggy_id: