40227-vm/CLAUDE.md
Dmitri d4a5378adf Refactor: migrate frontend to Vite/React, add product backend modules
Frontend:
- Replace Next.js with Vite + React + TypeScript
- Add new component architecture (app-shell, sidebar, dashboard modules)
- Implement product modules: FRAME, safety protocols, walkthrough checkin,
  campus/staff attendance, personality quiz, sign language, classroom timer
- Add shadcn/ui component library with Tailwind CSS
- Remove legacy generated components, stores, and pages

Backend:
- Add product migrations: frame_entries, user_progress, safety_quiz_results,
  walkthrough_checkins, communication_events, personality_quiz_results,
  campus_attendance_config/summaries, staff_attendance_records, content_catalog
- Add corresponding models, services, and routes
- Implement cookie-based auth with refresh token rotation
- Add content catalog seeder with product content
- Migrate to ESLint flat config
- Switch from yarn to npm

Infrastructure:
- Update .gitignore for new tooling
- Add project documentation (CLAUDE.md, docs/)
- Remove deprecated config files and yarn.lock

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
2026-06-09 15:18:23 +02:00

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# Repository Guidelines
**MAIN RULE:** DON'T MADE UP ANYTHING!!! IF YOU NOT SURE - DOUBLECHECK IT VIA PROJECT DOCUMENTATION, TOOL DOCUMENTATION, APPROPRIATE MCP, WEB SEARCH OR JUST ASK FOR ME TO CLARIFY.
## Working Principles
1. **Check docs first**: Read relevant documents files before starting tasks (links provided below)
2. **Minimal changes**: Update only necessary files, prefer simple robust solutions
3. **Use SKILLS**: For best results in specific areas, use the appropriate **SKILLS** in `.codex/skills` (56 skills available)
4. **Agents orchestration**: Use `.codex/skills/ai-agent-orchestrator/SKILL.md` skill to improve your efficiency.
5. **Use MCP servers**: Available via `mcp__<server>__<tool>`: GitHub (`github`), Chrome DevTools (`chrome-devtools`)
6. **TypeScript strict mode**: Avoid `any` types, **NEVER** disable linter or TypeScript, **NEVER** use types casting
7. **Concise comments**: Explain "why" not "what", code should be self-documenting
8. **No over-engineering**: Build for a small SaaS used by owner-operators. Choose the simplest robust solution that is fast to implement, easy to understand, and easy to support. Avoid enterprise-style architecture and unnecessary complexity: no extra fallbacks, premature abstractions, microservices, Kubernetes, complex orchestration, heavy caching, or distributed-system patterns unless the task explicitly requires them. User-facing copy must use plain language and avoid accounting jargon.
9. **Native errors for external services**: Pass through errors from Gemini/OpenAI as-is
10. **Centralized exceptions only**: Always use centralized exceptions instead of inlined logs or exceptions
11. **Use tools and agents**: Use MCP servers, web search, and agents when needed
12. **Avoid hardcoded constants**: Add to `backend/src/constants/` or `frontend/src/shared/constants/`
13. **Avoid silent failures**: Provide proper observability for all failure modes
14. **Documentation matters**: After **EACH** task update appropriate documentation files AND for **EACH** new module or feature create documentation file in appropriate directory: `backend/docs/`, `frontend/docs/` or common `docs/`
15. **Aliases for imports**: For **ALL** imports use aliases `@` instead of absolute or relative paths
16. **Tests matters**: After **EACH** task update appropriate unit and e2e tests AND for **EACH** new functionality create new tests (unit or e2e depending on the features complexity and importance)
## Documentation Entry Points
- Frontend documentation index: `frontend/docs/index.md`
- Frontend architecture contract: `frontend/docs/frontend-architecture.md`
- Backend and cross-project integration plan: `docs/full-integration-refactor-plan.md`
For frontend work, read `frontend/docs/frontend-architecture.md` before implementation and follow its three-layer approach: view components, business logic, and API/data access.