Replaces local filesystem document storage with S3-compatible object storage.
Adds embedded SeaweedFS 'weed mini' for local development and Docker deployments.
Updates document upload flow to use presigned URLs with a server fallback proxy.
Refactors auth configuration to use BASE_URL and AUTH_SECRET.
BREAKING CHANGE: Renamed BETTER_AUTH_URL to BASE_URL and BETTER_AUTH_SECRET to AUTH_SECRET. Removed legacy document upload/content endpoints. Requires S3 environment variables (auto-configured for embedded SeaweedFS).
Ensure all metadata operations consistently use the database layer,
removing filesystem-only fallback paths and conditional DB checks.
- Simplified migration scripts to always run on startup
- Updated document/audiobook APIs to always query DB
- Added ensureDbIndexed() calls across all routes
- Extracted test namespace utilities to dedicated module
- Removed migration-manager.ts (functionality consolidated)
- Updated rate limiter to assume DB is always available
BREAKING CHANGE: Database is now required in all configurations.
When auth is disabled, SQLite is used by default at /app/docstore/sqlite3.db.
