Initial commit

backend/app/core/__init__.py

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+"""Core settings and shared configuration package."""

backend/app/core/config.py

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+"""Application settings and environment configuration."""
+
+from functools import lru_cache
+from pathlib import Path
+
+from pydantic import Field
+from pydantic_settings import BaseSettings, SettingsConfigDict
+
+
+class Settings(BaseSettings):
+    """Defines runtime configuration values loaded from environment variables."""
+
+    model_config = SettingsConfigDict(env_file=".env", env_file_encoding="utf-8", extra="ignore")
+
+    app_name: str = "dcm-dms"
+    app_env: str = "development"
+    database_url: str = "postgresql+psycopg://dcm:dcm@db:5432/dcm"
+    redis_url: str = "redis://redis:6379/0"
+    storage_root: Path = Path("/data/storage")
+    upload_chunk_size: int = 4 * 1024 * 1024
+    max_zip_members: int = 250
+    max_zip_depth: int = 2
+    max_text_length: int = 500_000
+    default_openai_base_url: str = "https://api.openai.com/v1"
+    default_openai_model: str = "gpt-4.1-mini"
+    default_openai_timeout_seconds: int = 45
+    default_openai_handwriting_enabled: bool = True
+    default_openai_api_key: str = ""
+    default_summary_model: str = "gpt-4.1-mini"
+    default_routing_model: str = "gpt-4.1-mini"
+    typesense_protocol: str = "http"
+    typesense_host: str = "typesense"
+    typesense_port: int = 8108
+    typesense_api_key: str = "dcm-typesense-key"
+    typesense_collection_name: str = "documents"
+    typesense_timeout_seconds: int = 120
+    typesense_num_retries: int = 0
+    public_base_url: str = "http://localhost:8000"
+    cors_origins: list[str] = Field(default_factory=lambda: ["http://localhost:5173", "http://localhost:3000"])
+
+
+@lru_cache(maxsize=1)
+def get_settings() -> Settings:
+    """Returns a cached settings object for dependency injection and service access."""
+
+    return Settings()