plan: FR2 param-passing for generated queries (TypeScript)

5-phase TDD plan: Phase A (queries.ts renderers add db: Db first param) →
Phase B (queries-file.ts emits dialect-correct type Db alias, drops import { db })
→ Phase C (regenerate goldens) → Phase D (wiring-generated-queries.md recipe) →
Phase E (CHANGELOG breaking entry + README pointer).

routesFile() is intentionally unchanged.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Author: dmealing