Research: Tika full-text
via 3 oCIS env vars (phase 1); bge-m3 on TEI + pgvector halfvec/HNSW in the
existing Postgres with Postgres FTS + RRF hybrid (phase 2); Docling tier for
scanned PDFs; NATS event subscription (UploadReady et al) + nightly PROPFIND
reconciliation for change propagation. jina-v3 excluded (non-commercial).
Bilingual EN+ES eval set flagged as mandatory before freezing models.
