Expand and clarify documentation for TTS segment storage, including key layout, cleanup, and CLI access in object storage. Add details on the `tts_segments` schema and migration process. Revise local development and Docker quick start guides with improved prerequisites, platform-specific setup instructions, and updated TTS provider references. Document new usage of `AUTH_SECRET` for TTS segment text fingerprinting.
Implement AbortController in ConfigContext, PDFContext, and preference sync to prevent race conditions during session changes or rapid navigation. Refactor document preview routes into shared utilities and add LRU caching for text previews to optimize memory. Update documentation for Better Auth schema ownership and migration workflows. Fix issues with Postgres system user seeding and better-sqlite3 configuration.
