QIR Finish — Tracker #295
Description
This issue tracks the remaining work to finish the QIR milestone.\n\nChecklist\n- [ ] #67 finalize op→plan builder\n- [ ] #68 derive ORDER BY tie-breakers from schema keys\n- [ ] #70 DISTINCT ON + cursor pagination helpers\n- [ ] #71 optional RETURNS TABLE function signatures\n- [ ] #288 EXPLAIN snapshots for ops (emit + validate)\n- [ ] #289 pgTAP smoke tests for ops emission\n- [ ] #290 function SECURITY defaults + search_path hardening\n- [ ] #291 operation registry (out/ops/registry.json)\n- [ ] #292 DSL reference + cookbook (8 patterns)\n- [ ] #293 preflight toggle to enforce ops coverage (EXPLAIN + pgTAP)\n- [ ] #129 watch mode aligned with manifest\n- [ ] #137 attach Zod validators to RPC inputs\n- [ ] #136 Remix RPC loader scaffolding\n- [ ] #140 SvelteKit RPC actions\n- [ ] #56 HOLMES ops coverage\n\nPRs\n- [ ] #271 (branch finish-qir)\n