Refactor authentication and session management

- Removed session-based user retrieval from dependencies.py and main.py.
- Eliminated SessionMiddleware and related session handling code.
- Updated dashboard and team views to directly query user data from the database.
- Simplified redeem and team management views to remove authentication checks.
- Adjusted templates to reflect changes in user context handling.
- Added camera selection feature in scan_qr.html for improved QR code scanning.
- Cleaned up Docker configuration and requirements for better deployment.

docker-compose.yml

@@ -33,16 +33,10 @@ services:
       DB_NAME: "pubquiz_db"
       DB_USER: "pubquiz_user"
       DB_PASS: "pubquiz_pass"
-      # Session configuration
-      SECRET_KEY: "a-stronger-secret-key-for-sessions-32chars"
-      DEBUG: "True"
-      SESSION_MAX_AGE: "86400"  # 24 hours
-      COOKIE_SECURE: "False"    # Set to True in production with HTTPS
       # Add better error logging
       PYTHONUNBUFFERED: "1"
-    # Add dependency installation command
-    command: >
-      bash -c "pip install pymysql && uvicorn app.main:app --host 0.0.0.0 --reload"
+    # Just run uvicorn directly, no need for pymysql install since it's in requirements.txt
+    command: uvicorn app.main:app --host 0.0.0.0 --reload
     ports:
       - "8000:8000"
     volumes: