feat: add ctx similar — pre-implementation reuse check#3
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Thin wrapper over embedding search scoped to function/method symbols. Each hit reports a one-line doc (brief, falling back to the first sentence of the docstring), the similarity score, and fan-in so an agent can judge whether an established utility already exists. - Kind scoping via over-fetch (limit * 3) and filter; no schema changes - Missing embeddings is an operational error (exit 2) with a hint to run 'ctx embed' or use --keyword - --keyword routes to the FTS5 hybrid_search fallback that needs no embeddings or API key - --json emits the standard envelope (command: similar) with an empty results array when nothing matches
- docs/json-output.md: 'similar' payload, score semantics per mode, and exit-code behavior - README: command reference entry with the agent workflow (run 'ctx similar' before writing a new function; reuse strong matches) - CHANGELOG: Unreleased entry
# Conflicts: # CHANGELOG.md
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Summary
PR 5 of 7 in the Quality Intelligence Suite. Stacked on #2 (
feat/quality-foundation) — will be retargeted tomainonce #2 merges; review only the top 2 commits until then.ctx similar "<description>"command: semantic search scoped to function/method symbols, enriched with fan_in (is this an established utility?) and a one-line brief (falling back to the docstring's first sentence), so a coding agent can decide to reuse instead of rewrite.ctx embed, or use--keyword).--keywordfallback routes to FTS5hybrid_search— works offline with no API key.--jsonemits the standard envelope (docs/json-output.mdupdated with per-mode score semantics); empty results still emit a valid envelope.ctx similarbefore writing a new function).Test plan
callsedges, brief fallback, JSON payloads.cargo test(191 green),clippy -D warnings,fmt --check,--no-default-featuresbuild — all clean; smoke-tested against a scratch project.🤖 Generated with Claude Code