fix(engine): fix stale test fixtures, wire the suite into test:ci

[JSONbored]

Summary

packages/gittensory-engine's own test script (tsconfig.test.json + node --test) was broken and silently ungated — test:ci never invoked it, only the narrower root-level typecheck/test:engine-parity/test:coverage. Three independent, pre-existing issues:

• test/ai-policy-map.test.ts: a fixture was missing the required repoFullName field AiPolicyFatigueInput has always required.
• test/gate-verdict-calibration.test.ts: two tests deliberately pass malformed/extra-field input to verify the sanitizer strips it, but typed the fixture as the strict output type instead of casting through unknown first — TypeScript's excess-property/enum checks correctly rejected the literals. Cast via as unknown as GateVerdictCalibrationIngestion, matching what "untrusted external input" actually looks like at this boundary.
• test/duplicate-winner.test.ts: three tests asserted createdAt-based election ordering that fix(review): prevent backdated duplicate-winner claims #3956 deliberately removed (anti-backdating fix — an older PR could otherwise steal winner credit by editing its body later). Root test/unit/duplicate-winner.test.ts was updated in that same commit; this parallel copy wasn't, because nothing ran it. Replaced with the equivalent claim-time-only assertions — the file already had adequate non-createdAt coverage for the rest.

Adds npm run test --workspace @jsonbored/gittensory-engine to test:ci so this can't silently drift again.

Test plan

• npm run typecheck — clean
• npm run test --workspace @jsonbored/gittensory-engine — 272/272 pass
• npm run test:engine-parity — clean

[superagent-security]

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

[cloudflare-workers-and-pages]

Deploying with    Cloudflare Workers

The latest updates on your project. Learn more about integrating Git with Workers.

Status	Name	Latest Commit	Preview URL	Updated (UTC)
✅ Deployment successful! View logs	gittensory-ui	0f0bed2	Commit Preview URL Branch Preview URL	Jul 08 2026, 08:02 AM

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 93.72%. Comparing base (97f087b) to head (0f0bed2).
⚠️ Report is 4 commits behind head on main.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4150   +/-   ##
=======================================
  Coverage   93.72%   93.72%           
=======================================
  Files         385      385           
  Lines       36243    36243           
  Branches    13281    13281           
=======================================
  Hits        33968    33968           
  Misses       1618     1618           
  Partials      657      657           

🚀 New features to boost your workflow:

• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.