2 Commits

Author	SHA1	Message	Date
Maxim Dolgolyov	3a4623a60a	fix: полное ревью системы — 15 исправлений безопасности и надёжности ... Безопасность: - tests/🆔 скрыть is_correct и explanation для студентов (P0) - SQL injection: limit/offset через placeholder вместо template literal - Stored XSS: stripTags для lesson comments, flashcards, redBook sightings - profile.html: escape e.message в showMsg (XSS через server error) - attachment_url: валидация только /uploads/* путей - requestId: генерировать UUID сервером, не доверять клиенту - register: скрыть token_version из ответа Надёжность: - register: обработка UNIQUE constraint race condition - pet buyBg: re-check баланса внутри транзакции - DB errors: скрыть e.message в testController/questionController/courseController - preferences: лимит 50KB на размер JSON UX: - board.html: debounce 250ms на search input Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>	2026-04-16 10:59:19 +03:00
Maxim Dolgolyov	be4d43105e	LearnSpace: full-stack educational whiteboard platform ... Node.js/Express backend + vanilla JS frontend. Features: real-time collaborative whiteboard (SSE), multi-page support, LaTeX formulas, shapes/connectors, coordinate systems, number lines, compass, zoom/pan, Catmull-Rom pencil smoothing, ruler/protractor with rotation & resize controls, minimap navigation overlay, auto-measurements, multi-page thumbnails sidebar, PNG export, page templates. Student/teacher workflows: classes, assignments, library, dashboard. Mobile responsive. SQLite (better-sqlite3). Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>	2026-04-12 10:10:37 +03:00