fix(db): renumber the two newer 0134 migrations to resolve the 0134 collision

[JSONbored]

Summary

• Three already-merged PRs each landed a migration numbered 0134 (feat(review): add a submission-cadence/inter-arrival-time signal to flag machine-paced submitters #4549's review_targets_cadence_idx, feat(review): record MCP predicted-gate verdicts and measure predicted-vs-live gate agreement #4558's predicted_gate_calls, fix(review): harden backlog-convergence-sweep against duplicate work #4563's pr_last_backlog_convergence_regated_at), so check-migrations fails on main and every open PR inherits the duplicate.
• Keeps the earliest-merged file (0134_pr_last_backlog_convergence_regated_at.sql, which pairs with 0135_backlog_convergence_fanout_marker.sql from the same PR) at 0134, and renumbers the two later ones to the next free numbers, preserving merge order: 0134_review_targets_cadence_idx.sql → 0136, 0134_predicted_gate_calls.sql → 0137.
• Pure git mv renames — no SQL content changes (0 insertions / 0 deletions). The three migrations touch independent objects (a pull_requests column, a review_targets index, a new table), so ordering is unaffected. Same shape as the earlier 0131 collision fix (fix(db): renumber impact-map-query-cache migration to resolve 0131 collision #4554).

Scope

• The PR title follows type(scope): short summary Conventional Commit format.
• This PR is focused and does not mix unrelated backend, UI, MCP, docs, dependency, and deploy changes.
• This follows CONTRIBUTING.md and does not reintroduce GitHub Pages, VitePress, site/, or CNAME.
• I linked a currently open issue this PR resolves — owner/maintainer fix for a live migration-numbering collision on main blocking every other PR's CI, not tied to a filed issue (same as fix(db): renumber impact-map-query-cache migration to resolve 0131 collision #4554's precedent).

Validation

• git diff --check
• npm run actionlint (via npm run test:ci)
• npm run typecheck
• npm run test:coverage locally — no source lines changed (pure file rename), nothing new to cover
• npm run test:workers
• npm run build:mcp
• npm run test:mcp-pack
• npm run ui:openapi:check
• npm run ui:lint
• npm run ui:typecheck
• npm run ui:build
• npm audit --audit-level=moderate
• npm run db:migrations:check → 140 migrations OK — contiguous 0001..0137, no new duplicates. Next free: 0138

Safety

• No secrets, wallet details, hotkeys, coldkeys, user PATs, private keys, raw trust scores, private rankings, or private maintainer evidence are exposed.
• Public GitHub text stays sanitized, low-noise, and does not imply compensation guarantees or optimization tactics.
• Auth, cookie, CORS, GitHub App, Cloudflare, or session changes include negative-path tests — N/A, no such change.
• API/OpenAPI/MCP behavior is updated and tested where needed — N/A, no behavior change.
• UI changes use live API data — N/A, no UI change.
• UI Evidence — N/A, no visible/UI change (pure migration file rename).
• Public docs/changelogs updated — N/A.

Notes

• A prior attempt at this exact fix (fix(db): renumber the two newer 0134 migrations to resolve the 0134 collision #4578) was auto-closed for lacking a linked issue. Reopening with the same content and the same no-issue rationale fix(db): renumber impact-map-query-cache migration to resolve 0131 collision #4554 used successfully for the equivalent 0131 collision.

[superagent-security]

Superagent didn't find any vulnerabilities or security issues in this PR.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
⚠️ Please upload report for BASE (main@97e91d4). Learn more about missing BASE report.
⚠️ Report is 2 commits behind head on main.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4581   +/-   ##
=======================================
  Coverage        ?   94.12%           
=======================================
  Files           ?      429           
  Lines           ?    38131           
  Branches        ?    13905           
=======================================
  Hits            ?    35889           
  Misses          ?     1585           
  Partials        ?      657           

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