fix(search): keep the Jira half-terms summary tier within the all-terms match

[waleedlatif1]

Summary

• The half-terms Jira summary tier (improvement(search): fall back to Jira summaries holding half the terms of a longer query #9115/improvement(search): follow Jira summaries holding every term with those holding half of them #9121) searched summaries holding any pair of the query's terms, so it could lead the page with issues lacking one of the terms, often the rarest and most specific one, ahead of issues containing every term, and push those off the page
• Restrict that tier to the all-terms match (<summary pairs> AND text ~ "<query>"), so both summary tiers only re-order the issues the all-terms search matches, as field boosting does; the every-term tier already was (a summary holding every term is a text match)
• No new request; the 50 candidates now come only from issues that can be on the page

Type of Change

• Bug fix

Testing

• atlassian.test.ts: new case where a summary pair match lacking a query term must not lead; it fails with the pre-fix query; lib/sim-search/live suite passes (335 tests)
• Offline replay on a large production Jira (read-only), 28 overflowing plain queries from real client sessions, pooled blind relevance labels with the question's expected facts, two independent judges:
  • shipped rule vs the pre-summary page: better 14/18, worse 3/1 (one regression drops the issue holding an expected fact)
  • this fix vs the pre-summary page: better 12/14, worse 0/0
  • relevant issues in the top 10: pre-summary 37/39, shipped 67/87, this fix 53/59
• End to end, a client benchmark on a release with the shipped rule scored 2.4 lower than the previous release; the question that dropped most matches the regression above

Checklist

• Code follows project style guidelines
• Self-reviewed my changes
• Tests added/updated and passing (new tests pass the test-audit authoring gate)
• No new warnings introduced
• I confirm that I have read and agree to the terms outlined in the Contributor License Agreement (CLA)

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

1 Skipped Deployment

Project	Deployment	Actions	Updated
docs	Skipped		Oct 16, 2026 9:04am UTC

[cubic-dev-ai]

No issues found across 2 files

Confidence score: 5/5

• Automated review surfaced no issues in the provided summaries.
• No files require special attention.

_{Turn on auto-fix | Re-trigger cubic}

[greptile-apps]

Confidence Score: 5/5

[Medium impact] The PR appears safe to merge.

Summary

Restricts Jira’s half-terms summary tier to issues that also match the full query.

• Jira’s half-term summaries only reorder issues matching every query term.

_{Reviews (1) · Last reviewed commit: "test(search): normalize Jira fake rows b..." · Reviewed by Greptile}