fix: WYSIWYG editor, content generation, and writing assistant bug fixes

- Fix text selection menu not showing: wire contentRef via inputRef on multiline TextField
- Fix blog title not truncating: add min-w-0 for flex item overflow
- Fix outline generation 500: escape curly braces in f-string prompt template
- Fix content generation 'NoneType not callable': replace SessionLocal() with get_session_for_user(), add db param to MediumBlogGenerator, fix signature mismatch in database_task_manager
- Fix writing assistant suggest 500: add auth + user_id to API endpoint and service, replace sync requests with httpx.AsyncClient
- Fix hallucination detector 404: explicitly include router in main.py and app.py
- Fix missing error_data in task failure responses
- Hide CopilotKit web inspector button
- Remove hardcoded fallback suggestions from SmartTypingAssist
- Fix stale closure refs in SmartTypingAssist handleTypingChange
- Add two-column editor layout, stats bar, section hover menu
- Various subscription, billing, and research module improvements

backend/services/blog_writer/outline/prompt_builder.py

@@ -70,22 +70,22 @@ STRATEGIC REQUIREMENTS:
 - Ensure engaging, actionable content throughout
 
 Return JSON format:
-{
+{{
     "title_options": [
         "Title option 1",
         "Title option 2",
         "Title option 3"
     ],
     "outline": [
-        {
+        {{
             "heading": "Section heading with primary keyword",
             "subheadings": ["Subheading 1", "Subheading 2", "Subheading 3"],
             "key_points": ["Key point 1", "Key point 2", "Key point 3"],
             "target_words": 300,
             "keywords": ["primary keyword", "secondary keyword"]
-        }
+        }}
     ]
-}"""
+}}"""
     
     def get_outline_schema(self) -> Dict[str, Any]:
         """Get the structured JSON schema for outline generation."""