feat: implement user data schema and API endpoints

- Add Alembic migration setup with async configuration
- Create 16 user data models (users, decks, cards, replays, etc.)
- Implement comprehensive API endpoints with JWT auth
- Add replay, card collection, group, network, preferences, and activity log routers
- Include API documentation and migration test plan
- Update Dockerfile to run migrations on startup

backend/Dockerfile

@@ -29,11 +29,15 @@ ENV PATH=/app/.local/bin:$PATH
 
 RUN groupadd -r appuser && useradd -r -g appuser -d /app -s /sbin/nologin appuser
 
-RUN mkdir -p /app/data /app/uploads /app/logs /app/scripts && chown -R appuser:appuser /app
+RUN mkdir -p /app/data /app/uploads /app/logs /app/scripts /app/alembic/versions && chown -R appuser:appuser /app
 
 # Copy application code
 COPY --chown=appuser:appuser app/ ./app/
 
+# Copy Alembic configuration
+COPY --chown=appuser:appuser alembic.ini ./
+COPY --chown=appuser:appuser alembic/ ./alembic/
+
 # Copy interaction pipeline scripts
 COPY --chown=appuser:appuser scripts/ ./scripts/
 RUN chmod +x /app/scripts/*.py
@@ -52,4 +56,5 @@ USER appuser
 
 EXPOSE 8000
 
-CMD ["python", "-m", "uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000"]
+# Run migrations before starting the app
+CMD ["sh", "-c", "python -m alembic upgrade head && python -m uvicorn app.main:app --host 0.0.0.0 --port 8000"]