Module 5 phase 4 step 0 (docs/kb/modules/05-faza4-plan.md, §3, decision 1):
kb-query is a long-lived Docker service, documents-ingest is a venv job with
an `anthropic` dependency and CLI scripts it doesn't need. Move
embed_chunk/_vector_literal/cascade_query/flat_query into a shared package
with minimal deps (asyncpg, aiohttp only) so both can depend on the same
tested retrieval code without the service image pulling in the job's extras.
documents_ingest.chunk_embed/retrieval keep thin re-exports so nothing
importing the old paths breaks. Pure refactor: retrieval_eval.py run live
against kb-postgres@PIHA + Ollama@SOLARIA before/after gives byte-identical
`dist`/hit@3/gate results (still PASS) — zero behavior change in the cascade.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
f964631d02