Complete backend infrastructure and authentication system

Co-authored-by: mblanke <9078342+mblanke@users.noreply.github.com>

backend/app/core/config.py

@@ -0,0 +1,16 @@
+from pydantic_settings import BaseSettings
+
+
+class Settings(BaseSettings):
+    """Application settings"""
+    app_name: str = "VelociCompanion"
+    database_url: str = "postgresql://postgres:postgres@db:5432/velocicompanion"
+    secret_key: str = "your-secret-key-change-in-production-min-32-chars-long"
+    access_token_expire_minutes: int = 30
+    algorithm: str = "HS256"
+
+    class Config:
+        env_file = ".env"
+
+
+settings = Settings()