first commit

backend/app/config.py

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+from functools import lru_cache
+
+from pydantic_settings import BaseSettings
+
+
+class Settings(BaseSettings):
+    admin_token: str
+    site_title: str = "Untitled Site"
+    data_dir: str = "./data"
+    max_upload_bytes: int = 100_000_000
+    allowed_upload_types: str = "pdf,png,jpg,jpeg,gif,mp4,webm,mp3,wav,ogg,webp"
+
+    model_config = {"env_prefix": "HANDIN_"}
+
+
+@lru_cache
+def get_settings() -> Settings:
+    return Settings()