Implement Phase 1 of [spec 043](docs/specs/043-find-tool-and-sample-catalogue-design.md) — the tool skeleton for `mur find` / `mur get` / `mur list`. Scope: BM25 search engine, CLI command wiring, one stub scenario (`use-state-basic`), build-time extractor skeleton, unit tests. Phase 2 (P0 catalogue authoring, full synonym maps, recipe migration) is a follow-up.
Implement Phase 1 of spec 043 — the tool skeleton for
mur find/mur get/mur list.Scope: BM25 search engine, CLI command wiring, one stub scenario (
use-state-basic), build-time extractor skeleton, unit tests.Phase 2 (P0 catalogue authoring, full synonym maps, recipe migration) is a follow-up.