- Analytics/Similar: expandable question preview with KaTeX rendering
- KaTeXRenderer: auto markdown-to-HTML (code blocks, tables, bold), auto Unicode→LaTeX
- ErrorBook: full question text rendering instead of truncated preview
- Variant: remove hint/solution from generation (faster), async, fix null crash
- Grading: add max_tokens limit
- JSON parser: robust multi-layer repair + JSONDecodeError retry
- Extraction prompt: enforce LaTeX notation for math
- Upload: redirect to home instead of blank paper page
- ProcessingBanner: add ETA time estimate + percentage
- Batch import script + handoff guide for team
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Remove login gate, allow guest browsing with Sign in link
- Add favicon (book logo)
- Add pricing modal (Free/Standard/Exam) with hover animations
- Dynamic course list from DB instead of hardcoded
- Enforce LaTeX in AI trio generation prompt
- UI improvements: homepage animations, analytics donut chart, error book cards
- Fix error book locked state for guests
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
