Full app rebuild: FastAPI backend + React Native mobile with auth, championships, admin

Backend (FastAPI + SQLAlchemy + SQLite):
- JWT auth with access/refresh tokens, bcrypt password hashing
- User model with member/organizer/admin roles, auto-approve members
- Championship, Registration, ParticipantList, Notification models
- Alembic async migrations, seed data with test users
- Registration endpoint returns tokens for members, pending for organizers
- /registrations/my returns championship title/date/location via eager loading
- Admin endpoints: list users, approve/reject organizers

Mobile (React Native + Expo + TypeScript):
- Zustand auth store, Axios client with token refresh interceptor
- Role-based registration (Member vs Organizer) with contextual form labels
- Tab navigation with Ionicons, safe area headers, admin tab for admin role
- Championships list with status badges, detail screen with registration progress
- My Registrations with championship title, progress bar, and tap-to-navigate
- Admin panel with pending/all filter, approve/reject with confirmation
- Profile screen with role badge, Ionicons info rows, sign out
- Password visibility toggle (Ionicons), keyboard flow hints (returnKeyType)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

docker-compose.yml

@@ -0,0 +1,36 @@
+version: "3.9"
+
+services:
+  db:
+    image: postgres:16-alpine
+    environment:
+      POSTGRES_USER: pole
+      POSTGRES_PASSWORD: pole
+      POSTGRES_DB: poledance
+    ports:
+      - "5432:5432"
+    volumes:
+      - pgdata:/var/lib/postgresql/data
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U pole -d poledance"]
+      interval: 5s
+      timeout: 5s
+      retries: 10
+
+  api:
+    build: ./backend
+    ports:
+      - "8000:8000"
+    environment:
+      DATABASE_URL: postgresql+asyncpg://pole:pole@db:5432/poledance
+    env_file:
+      - .env
+    depends_on:
+      db:
+        condition: service_healthy
+    volumes:
+      - ./backend:/app
+    command: uvicorn app.main:app --host 0.0.0.0 --port 8000 --reload
+
+volumes:
+  pgdata: