Add EPUB narration, shared media controls, and native device session integration.
Apply the generated migrations and update all first-party clients alongside the server.
BREAKING CHANGE: introduce incompatible database and API contracts for media playback
Upgrades all references of pgvector/pgvector from pg16 to pg18,
including docker-compose files and e2e testing environments.
Updates the development docker-compose to mount the postgres volume
at /var/lib/postgresql to align with pg18+ directory requirements.
Also adds `shrink-0` to WhatsNewDialog header and footer to resolve
a layout overflow glitch.
- resolve all 69 client type-checking errors for stricter TS compliance
- remove obsolete type-check baseline scripts and files
- overhaul project root with updated README.md and new DEVELOPMENT.md
- migrate to unified baseline migration strategy and cleanup docker configs
- remove redundant production and dev-specific shell scripts