v0.7.0

• chore: release 0.7.0 (ea0a7f9)
• fix: stem gate terms at four characters (ccdd214)
• test: add buried and cross-project eval queries (43b4456)
• feat: score eval queries by kind (7a2d188)
• fix: abstain when query names a term absent from the docs (421d201)
• test: expand retrieval golden set to 20 queries (9cee236)
• chore: drop unused shikijs markdown-it dep (d5b683d)
• perf: lazy-load shiki grammars per fence language (190258f)
• docs: document retrieval eval (d627369)
• test: add retrieval eval harness (65e8ffa)
• refactor: export default min score (7f33d02)
• chore: anchor example docs ignores to repo root (56bc632)
• fix: ai disclosure text contrast in dark mode (434e2d7)