Release v2.8.2 - Critical Bug Fixes & Production Cleanup

CRITICAL FIX:
🐛 Fixed double JSON parsing bug causing framework Q&A data to show as empty
   - Starbursting, SWOT, COG, and other frameworks now display Q&A correctly
   - Root cause: API and component both parsed JSON data
   - Solution: Added type checking before parsing in 9 locations

ENHANCEMENTS:
✨ Content Intelligence improvements:
   - Fixed word cloud export (oklch color compatibility)
   - Added single word frequency tracking
   - Fixed author/entity extraction confusion
   - Improved "Analyze Now" button reliability
   - Added comprehensive export reports

🔒 Security improvements:
   - Fixed web manifest Content-Type header
   - Added security headers (X-Frame-Options, CSP, etc.)

📝 Documentation & Cleanup:
   - Updated README with complete feature list
   - Added double-parsing bug to LESSONS_LEARNED.md
   - Archived 24 working documents
   - Removed debug logging from production code

DEPLOYMENT:
- Production URL: https://researchtoolspy.pages.dev
- All tests passing
- No breaking changes