joungmin
f9f710ec90
Add English level settings, improve content structuring and rendering
- Add english_level column to users table (CEFR with TOEIC mapping)
- Add UserController (GET/PATCH /api/users/me) and Settings page
- Enhance structuring prompts: sequential TOC, no summary sections,
no content overlap, English expression extraction by CEFR level
- Remove sub-TOC analysis (caused content repetition), use simple
per-section generation with truncation detection and continuation
- Fix CLOB truncation: explicit Clob-to-String conversion in repository
- Replace regex-based markdown rendering with react-markdown
- Add wallet renewal procedure to troubleshooting docs
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>