feat: T03+T04 backend - FastAPI, DB models, Rentman integration, admin auth, APScheduler

backend/app/config.py

@@ -0,0 +1,43 @@
+"""Application configuration via Pydantic Settings."""
+from pydantic_settings import BaseSettings
+from functools import lru_cache
+
+
+class Settings(BaseSettings):
+    """Settings loaded from environment variables."""
+
+    # Database
+    database_url: str = "sqlite+aiosqlite:///./test.db"
+
+    # Redis
+    redis_url: str = "redis://localhost:6379/0"
+
+    # Rentman
+    rentman_api_token: str = ""
+
+    # JWT
+    jwt_secret: str = "change-me-in-production"
+    jwt_algorithm: str = "HS256"
+    jwt_expire_hours: int = 24
+
+    # SMTP
+    smtp_host: str = ""
+    smtp_port: int = 587
+    smtp_user: str = ""
+    smtp_password: str = ""
+    smtp_from: str = "info@hms-licht-ton.de"
+
+    # CORS
+    cors_origins: str = "https://hms.media-on.de,http://localhost:3000"
+
+    # Admin seed
+    admin_username: str = "admin"
+    admin_password: str = "change_me_in_production"
+
+    model_config = {"env_file": ".env", "extra": "ignore"}
+
+
+@lru_cache
+def get_settings() -> Settings:
+    """Return cached settings instance."""
+    return Settings()