fix: Calculate proper text width/height and deselect before export

- Calculate text dimensions based on fontSize and text length
- Title: 0.6 * fontSize * length for width, 1.5 * fontSize for height
- Subtitle: Same calculation approach
- Deselect all objects before export to remove selection handles
- Added 0.5s wait after deselection

This ensures text displays fully without truncation.

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

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

mcp_server_comprehensive.py

@@ -447,12 +447,19 @@ async def create_thumbnail(inputs: Dict[str, Any]) -> Dict[str, Any]:
                 # Add new title text
                 if title_objects:
                     first_title = title_objects[0]
+                    # Calculate appropriate width (rough estimate: 0.6 * fontSize * text length)
+                    font_size = first_title.get("fontSize", 190)
+                    text_width = max(len(title) * font_size * 0.6, 400)
+                    text_height = font_size * 1.5
+
                     await execute_api_call(page, "addObject", {
                         "type": "text",
                         "text": title,
                         "x": first_title.get("x", 73),
                         "y": first_title.get("y", 65),
-                        "fontSize": first_title.get("fontSize", 190),
+                        "width": text_width,
+                        "height": text_height,
+                        "fontSize": font_size,
                         "fontFamily": first_title.get("fontFamily", "Inter"),
                         "fill": first_title.get("fill", "#000000"),
                         "fontWeight": "bold",
@@ -493,12 +500,19 @@ async def create_thumbnail(inputs: Dict[str, Any]) -> Dict[str, Any]:
                 # Add new subtitle text
                 if subtitle_objects:
                     first_subtitle = subtitle_objects[0]
+                    # Calculate appropriate width for subtitle
+                    font_size = first_subtitle.get("fontSize", 68)
+                    text_width = max(len(subtitle) * font_size * 0.6, 300)
+                    text_height = font_size * 1.5
+
                     await execute_api_call(page, "addObject", {
                         "type": "text",
                         "text": subtitle,
                         "x": first_subtitle.get("x", 84),
                         "y": first_subtitle.get("y", 428),
-                        "fontSize": first_subtitle.get("fontSize", 68),
+                        "width": text_width,
+                        "height": text_height,
+                        "fontSize": font_size,
                         "fontFamily": first_subtitle.get("fontFamily", "Inter"),
                         "fill": first_subtitle.get("fill", "#FFFFFF"),
                         "hasBackground": first_subtitle.get("hasBackground", True),
@@ -521,6 +535,10 @@ async def create_thumbnail(inputs: Dict[str, Any]) -> Dict[str, Any]:
         # Wait for rendering to complete (longer wait after adding new objects)
         await asyncio.sleep(2)
 
+        # Deselect all objects before export (removes selection handles)
+        await execute_api_call(page, "deselectAll")
+        await asyncio.sleep(0.5)
+
         # Export the final thumbnail
         export_result = await execute_api_call(page, "exportCanvas", "png")
         results.append({"step": "export", "result": export_result})