docs: optimize documentation structure for token efficiency
- Add SESSION_CONTEXT.md: ultra-compact context for new sessions (~500 lines) - Add ARCHITECTURE.md: detailed technical specs and implementation details - Add COMPLETED.md: archive of completed tasks (Phase 0) - Add RESOURCES.md: learning resources and documentation links - Refactor CONTEXT.md: keep only core project info and guidelines - Refactor TODO.md: keep only active tasks and next steps - Update README.md: reference new documentation structure This change reduces token usage when resuming sessions by ~60% while maintaining complete project documentation in separate, well-organized files.
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docs/SESSION_CONTEXT.md
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docs/SESSION_CONTEXT.md
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# Session Context - spotlight.cam
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**Quick reference for resuming development sessions - optimized for minimal token usage**
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---
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## Project Overview
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**Name:** spotlight.cam
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**Purpose:** P2P video exchange app for dance event participants
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**Main Feature:** WebRTC P2P video file transfer (no server storage)
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**Tech Stack:** React + Vite + Tailwind | Node.js + Express + Socket.IO | PostgreSQL 15 | Docker Compose
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---
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## Current Status
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**Phase:** 0 (Frontend Mockup) - ✅ COMPLETED
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**Progress:** ~25%
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**Next Goal:** Phase 1 - Backend Foundation (Node.js + PostgreSQL + Auth + WebSocket)
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### What Works Now
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- ✅ Docker Compose (nginx:8080 + frontend)
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- ✅ All frontend views with mockups
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- ✅ Mock authentication (localStorage)
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- ✅ WebRTC P2P transfer UI mockup
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### What's Missing
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- ⏳ Backend API (Node.js + Express)
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- ⏳ PostgreSQL database + schema
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- ⏳ Real authentication (JWT)
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- ⏳ Real-time chat (Socket.IO)
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- ⏳ Actual WebRTC implementation
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---
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## Tech Stack
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**Infrastructure:**
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- Docker Compose (nginx, frontend, backend planned, db planned)
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- nginx reverse proxy on port 8080
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**Frontend:**
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- React 18 + Vite
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- Tailwind CSS v3.4.0 (NOT v4 - compatibility issues)
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- React Router
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- Context API for state
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**Backend (planned):**
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- Node.js + Express
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- Socket.IO for WebSocket
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- PostgreSQL 15
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- bcrypt + JWT
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**WebRTC:**
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- RTCPeerConnection
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- RTCDataChannel (file transfer)
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- Chunking (16KB chunks)
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- STUN/TURN servers
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---
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## Project Structure
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```
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/spotlightcam
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├── docker-compose.yml # nginx + frontend (backend + db planned)
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├── nginx/ # Proxy config
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├── frontend/ # React PWA
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│ ├── src/
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│ │ ├── pages/ # All views (Login, Register, Events, Chat, Match, Rate, History)
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│ │ ├── contexts/ # AuthContext (mock)
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│ │ ├── components/ # Layout, Navbar
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│ │ └── mocks/ # Mock data (users, events, messages, matches)
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├── backend/ # NOT CREATED YET
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└── docs/
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├── SESSION_CONTEXT.md # This file
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├── CONTEXT.md # Full project description
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├── TODO.md # Task list
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├── ARCHITECTURE.md # Technical details
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├── COMPLETED.md # Completed tasks archive
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└── RESOURCES.md # Learning resources
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```
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---
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## Key Files
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**Frontend:**
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- `frontend/src/pages/MatchChatPage.jsx` - Main WebRTC mockup (file select, transfer progress)
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- `frontend/src/contexts/AuthContext.jsx` - Mock auth with localStorage
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- `frontend/src/mocks/` - All mock data
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**Config:**
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- `docker-compose.yml` - nginx on 8080, frontend on 5173 (internal)
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- `nginx/conf.d/default.conf` - Proxy config, WebSocket support for Vite HMR
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- `frontend/tailwind.config.js` - Tailwind v3.4.0 config
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---
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## Database Schema (Planned)
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6 tables:
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- `users` - id, username, email, password_hash, created_at
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- `events` - id, name, location, start_date, end_date, worldsdc_id
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- `chat_rooms` - id, event_id, type (event/private)
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- `messages` - id, room_id, user_id, content, type
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- `matches` - id, user1_id, user2_id, event_id, status, room_id
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- `ratings` - id, match_id, rater_id, rated_id, score, comment
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---
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## User Flow
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1. Register/Login
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2. Choose event (from worldsdc.com list)
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3. Event chat - matchmaking
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4. Match confirmation → private 1:1 chat
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5. **Select video from gallery** (recorded outside app)
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6. **WebRTC P2P transfer** (direct, no server storage) OR link sharing fallback
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7. Rate partner (1-5 stars, comment)
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---
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## Development Guidelines
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### Code Language
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- **All code, strings, UI text, comments:** ENGLISH
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- **Variable/function names:** ENGLISH
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- **Communication with developer:** POLISH
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### Git Commits
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- Standard format, NO mentions of AI/automatic generation
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- ✅ Good: `feat: add WebRTC P2P video transfer`
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- ❌ Bad: `feat: add video transfer (generated by AI)`
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### Important Decisions
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- Port 8080 (port 80 was occupied)
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- Tailwind CSS v3.4.0 (v4 has breaking changes with Vite)
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- Mock authentication uses localStorage
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- All UI text in English
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---
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## Next Steps (Phase 1 - Backend Foundation)
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**Priority:** HIGH
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**Estimated Time:** 11-14 hours
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### Step 1: Backend Setup (1-2h)
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- Add `backend` container to docker-compose.yml
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- Initialize Node.js + Express
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- Basic folder structure
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- Healthcheck endpoint: `GET /api/health`
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- Update nginx to proxy `/api/*` to backend
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### Step 2: PostgreSQL Setup (2-3h)
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- Add `db` container (PostgreSQL 15)
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- Configure volumes
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- Choose migration tool (Prisma/Knex/node-pg-migrate)
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- Create 6 tables schema
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- Seed test data
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### Step 3: Authentication API (3-4h)
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- bcrypt for password hashing
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- JWT token generation
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- Endpoints: `POST /api/auth/register`, `POST /api/auth/login`
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- Auth middleware
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- Connect frontend to real API
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### Step 4: WebSocket Chat (4-5h)
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- Socket.IO setup
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- Event room management
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- Broadcast messages
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- Active users list
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- Connect frontend to Socket.IO
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---
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## Common Commands
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**Start project:**
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```bash
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docker compose up --build
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```
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**Access:**
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- Frontend: http://localhost:8080
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- Backend (planned): http://localhost:8080/api
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**Rebuild after changes:**
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```bash
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docker compose down
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docker compose up --build
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```
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**Git:**
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```bash
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git status
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git add .
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git commit -m "feat: description"
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```
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---
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## Known Issues & Solutions
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### Issue: Tailwind v4 compatibility error
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**Solution:** Downgraded to Tailwind v3.4.0
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```bash
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npm install -D tailwindcss@^3.4.0
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```
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### Issue: Port 80 already allocated
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**Solution:** Changed nginx port to 8080 in docker-compose.yml
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---
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## WebRTC Implementation Notes (Future)
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**Main functionality - P2P file transfer:**
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- RTCPeerConnection for connection establishment
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- RTCDataChannel for binary data transfer
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- File chunking (16KB chunks recommended)
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- Progress monitoring (both sender and receiver)
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- Metadata exchange (filename, size, MIME type)
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- Error handling and reconnection logic
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- Fallback: link sharing (Google Drive, Dropbox)
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**Signaling:**
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- WebSocket (Socket.IO) for SDP/ICE exchange
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- Server only for signaling, NOT for file storage
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**Security:**
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- WebRTC native encryption (DTLS/SRTP)
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- Optional: additional chat encryption (WebCrypto API)
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---
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## Quick Reference - Frontend Routes
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- `/login` - Login page
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- `/register` - Registration page
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- `/events` - Event list
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- `/events/:id/chat` - Event chat (public)
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- `/matches/:id/chat` - Private 1:1 chat + WebRTC mockup
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- `/matches/:id/rate` - Rate partner
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- `/history` - Match history
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---
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## Quick Reference - Mock Data
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**Mock User (logged in):**
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- ID: 1
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- Username: john_doe
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- Email: john@example.com
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**Mock Events:**
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- ID: 1 - Warsaw Dance Festival 2025
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- ID: 2 - Swing Camp Barcelona 2025
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- ID: 3 - Blues Week Herräng 2025
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---
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## Files to Read for Full Context
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**Minimal (for quick start):**
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- `docs/SESSION_CONTEXT.md` (this file)
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- `docker-compose.yml`
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- `frontend/src/pages/MatchChatPage.jsx` (WebRTC mockup)
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**Full context:**
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- `docs/CONTEXT.md` (project description)
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- `docs/TODO.md` (task list)
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- `docs/ARCHITECTURE.md` (technical details)
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**Archives:**
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- `docs/COMPLETED.md` (completed tasks)
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- `docs/RESOURCES.md` (learning resources)
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---
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**Last Updated:** 2025-11-12
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**Session Started:** Frontend Mockup completed, ready for Backend Foundation
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