feat: database models and Alembic migrations — User, Recording, Transcription, Protocol, PromptTemplate, ExportFile

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

backend/app/config.py

@@ -0,0 +1,28 @@
+from pydantic_settings import BaseSettings
+
+
+class Settings(BaseSettings):
+    database_url: str = "postgresql+asyncpg://meetproto:changeme@db:5432/meetproto"
+    redis_url: str = "redis://redis:6379/0"
+    jwt_secret: str = "change-this-to-a-random-secret"
+    jwt_algorithm: str = "HS256"
+    jwt_expire_minutes: int = 1440
+    whisper_model: str = "large-v3"
+    whisper_device: str = "cuda"
+    whisper_compute_type: str = "float16"
+    litellm_model: str = "openrouter/meta-llama/llama-3.1-70b-instruct"
+    litellm_api_key: str = ""
+    litellm_api_base: str = ""
+    upload_dir: str = "/app/uploads"
+    export_dir: str = "/app/exports"
+    retention_days: int = 90
+    telegram_bot_token: str = ""
+    telegram_webhook_url: str = ""
+    app_host: str = "0.0.0.0"
+    app_port: int = 8000
+    app_url: str = "http://localhost:8000"
+
+    model_config = {"env_file": ".env", "extra": "ignore"}
+
+
+settings = Settings()