Document Paperless Tika/Gotenberg sidecars, supported Office/OpenDocument ingestion formats, stack paths, validation/deploy procedure, and verification commands. Updates service inventory and architecture overview so PD docs match the deployed documents stack.
Enable Paperless Office/OpenDocument ingestion by wiring internal Tika and Gotenberg services into the documents stack. Adds PAPERLESS_TIKA_* environment keys to .env.example and places both sidecars on an internal-only network with resource limits.