fix(commands): resolve duplicate @gittensory review handler breaking typecheck

[JSONbored]

Summary

• main is currently red for tsc --noEmit: two independently-merged PRs (feat(commands): wire @gittensory review / re-review command (#2163) #4050 and feat(commands): wire @gittensory review and resume PR-comment commands #4175) both implemented the @gittensory review command, leaving two colliding declarations of maybeProcessReviewCommand/recordReviewCommandSkip and two dispatch call sites in src/queue/processors.ts — a hard TS2393: Duplicate function implementation error. This blocks the typecheck step of every PR's validate check right now, confirmed via a clean npm ci + npm run typecheck on a fresh checkout of current main.
• Keeps the earlier, more complete implementation (feat(commands): wire @gittensory review and resume PR-comment commands #4175 — it also wires the paired resume command and a real hasAutoreviewPausedMarker bug fix the other PR never touched), and removes the later duplicate (feat(commands): wire @gittensory review / re-review command (#2163) #4050) entirely, along with its now-redundant duplicate test suite for the same command.
• Folds in two things the removed duplicate actually got right that the kept implementation was missing:
  • needsMinerDetection: true on the authorization call. DEFAULT_COMMAND_AUTHORIZATION_POLICY deliberately widens review to confirmed_miner (the same self-rerun precedent already applied to review-now), but without this flag a confirmed miner re-triggering review on their own PR had no other role to match and was always wrongly denied.
  • A resolveAgentActionMode pause/dry-run gate before dispatching, matching every other action command (pause/resolve/explain/gate-override/generate-tests). The kept implementation had no such gate at all, so @gittensory review always dispatched live regardless of a maintainer's global pause or dry-run setting.
• Adds regression coverage for both fixes above (a confirmed-miner-authorized self-rerun test, and an agentPaused/agentDryRun skip test).

Closes #2163 (no functional change to what #2163 asked for — this only removes the accidental duplicate and restores the two missing correctness gates).

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.

Validation

• git diff --check
• npm run actionlint
• npm run typecheck — clean (was failing with 4 TS2393 errors before this fix, confirmed on a fresh npm ci checkout of current main)
• npm run test:coverage locally (unsharded, in an isolated worktree with a fresh npm ci) — full test/unit/queue.test.ts suite (739 tests) passes; every changed/new line in this diff is covered.
• 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
• New or changed behavior has unit/integration tests for new branches, fallback paths, and sanitizer boundaries — the confirmed-miner authorization branch and the pause/dry-run gate branch both had zero coverage from either original PR; both are covered now.

Also ran: npm run db:migrations:check, npm run db:schema-drift:check, npm run selfhost:env-reference:check, npm run selfhost:validate-observability, npm run cf-typegen:check, npm run test:engine-parity, the @jsonbored/gittensory-engine package's own tests, npm run build:miner, npm run test:miner-pack, npm run rees:test, npm run ui:openapi:settings-parity, npm run ui:version-audit, npm run docs:drift-check, npm run manifest:drift-check, npm run command-reference:check, npm run ui:test.

Note on unsharded coverage: one unrelated pre-existing failure surfaced during the full run — test/unit/mcp-cli-tools.test.ts's tool-count assertion (33 vs 34) — reproduced on a clean checkout of main before this fix, so it is a separate, already-broken drift unrelated to this diff. Flagged separately rather than bundled into this urgent fix.

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 (the confirmed-miner authorization path, specifically).
• API/OpenAPI/MCP behavior is updated and tested where needed (no OpenAPI/MCP surface changed by this PR).
• UI changes use live API data or real empty/error/loading states, not production mock/demo fallbacks (no UI changed).
• UI Evidence — not applicable, no visible UI/frontend/docs/extension change in this PR.
• Public docs/changelogs are updated where needed (none needed); changelog itself is untouched.

Notes

This is a merge-collision cleanup, not new functionality — flagging for expedited review given main is currently red for every other open PR's typecheck check until this lands.

[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@e1bc7f7). Learn more about missing BASE report.
⚠️ Report is 1 commits behind head on main.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4259   +/-   ##
=======================================
  Coverage        ?   93.80%           
=======================================
  Files           ?      398           
  Lines           ?    36768           
  Branches        ?    13437           
=======================================
  Hits            ?    34492           
  Misses          ?     1622           
  Partials        ?      654           

Files with missing lines	Coverage Δ
src/queue/processors.ts	95.37% <100.00%> (ø)

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