feat: Add database migrations and auth system

- Add Alembic for database migrations
- Implement user authentication system
- Update frontend styles and components
- Add new test audio functionality
- Update stream management and UI

init_db.py

@@ -0,0 +1,36 @@
+#!/usr/bin/env python3
+"""Initialize the database with required tables"""
+import os
+import sys
+from sqlmodel import SQLModel, create_engine
+from dotenv import load_dotenv
+
+# Add the parent directory to the path so we can import our models
+sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
+
+from models import User, UserQuota, UploadLog, PublicStream, Session
+
+def init_db():
+    """Initialize the database with required tables"""
+    # Load environment variables
+    load_dotenv()
+    
+    # Get database URL from environment or use default
+    database_url = os.getenv(
+        "DATABASE_URL",
+        "postgresql://postgres:postgres@localhost/dicta2stream"
+    )
+    
+    print(f"Connecting to database: {database_url}")
+    
+    # Create database engine
+    engine = create_engine(database_url)
+    
+    # Create all tables
+    print("Creating database tables...")
+    SQLModel.metadata.create_all(engine)
+    
+    print("Database initialized successfully!")
+
+if __name__ == "__main__":
+    init_db()