Schema now matches plugin Data/LessonStore.cs exactly:
- id TEXT PRIMARY KEY (UUIDs)
- lesson_media table (not media_items)
- Full column set with NOT NULL constraints matching plugin
Addresses PR #14 review feedback.
- REST API server on port 3099 with better-sqlite3
- CRUD endpoints for lessons, Typst compile endpoint
- Shared DB path with plugin (~/.local/share/jellyfin-lessons/lessons.db)
- Single-page admin UI with sidebar (grouped by grade/subject)
- Lesson editor with Typst source editing, live preview via compile
- Media items management (Jellyfin item UUIDs with sort order)
- CORS enabled for local dev
