Back to Search-quality baseline: acronym / synonym recall (Phase 1.4, v1.2.0 candidate)

22 (synonym, canonical_URI) pairs, all drawn from `framework_aliases.synonyms` rows in the v1.2.0 candidate DB (excluding `data` and `text` as too-generic). For each: run `cupertino search "<synonym>" --limit 10`, find rank of the canonical framework URI. Aggregate: count top-1 hits, in-top-5, in-top-10, MRR. Binomial test on top-1 hit rate vs chance.

Harness source: `/tmp/cupertino-search-eval-acronym.py` (not yet versioned in repo). Full JSON dump: `/tmp/cupertino-search-eval-acronym-20260520.json`.