fix(release): make mergeability poll executable

[0xPlayerOne]

Summary

• correct the gh pr view jq invocation in the mergeability guard
• add a regression assertion so the invalid two-argument form cannot return UNKNOWN forever

The v0.34.0 reusable release workflow accepted the new guard in PR #311, but the first live release run exposed this syntax defect before the bounded timeout. This follow-up is intentionally isolated and keeps consumers on their existing pins until a deliberate v0.34.1 migration.

Validation

• npm test (78 passed)
• npm run build
• npm run type-check
• actionlint (errors none; existing SC2086 info diagnostics unchanged)

[kilo-code-bot]

Code Review Summary

Status: No Issues Found | Recommendation: Merge

Files Reviewed (2 files)

• .github/workflows/release.yml - Removed erroneous -r flag from --jq argument; @tsv already produces raw output
• test/cli.test.mjs - Added regression assertion to prevent re-introduction of broken --jq -r form

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_{Reviewed by step-3.7-flash · Input: 85.1K · Output: 4.2K · Cached: 273.8K}