Context

This draft PR mirrors upstream branch 'upstream-prs/pr-300' into 'master' for review, provenance, and later decision-making only.
It must not be merged wholesale. If we adopt anything from it, the intended path is commit-level intake only.

Upstream Source

• Original PR: perf: reduce repeated chat lookups and restore regressions decolua/9router#300
• Original author: @FRBIE
• Original title: "perf: reduce repeated chat lookups and restore regressions"
• Mirrored branch on this fork: upstream-prs/pr-300
• Current divergence snapshot vs master: 3 commits ahead, 2 commits behind

Current Intake Recommendation

• Decision: Candidate intake
• Status: Planned review only, with no integration performed yet
• Credit policy: preserve original author metadata, use git cherry-pick -x for any later intake, and keep any conflict adaptation in separate follow-up commits with explicit upstream attribution

Selected Commits For Any Future Intake

• 5200afb perf: cache chat request db lookups
• 1b5b05e fix: restore translator and cursor auto-import behavior

Skipped / Excluded Scope

• 3378550 merge-from-master commit skipped as branch pollution.

Acceptance Gates

• Do not merge this mirrored branch as-is.
• If anything is adopted later, intake only the explicitly selected commits or a newly re-validated subset.
• Preserve upstream authorship and provenance in Git history.
• Keep conflict-resolution/adaptation commits separate from upstream-authored commits.
• Reconfirm branch contents against current master at intake time before changing the selected scope.

Verification / Validation Checklist

• Repeated chat lookups are reduced without changing response semantics.
• Translator and cursor auto-import regressions are fixed.
• Relevant core-path tests or smoke checks pass after any future intake.

Review Focus

• Request-context caching safety in core chat paths
• Translator and cursor auto-import regression fixes
• Test coverage around restored behavior

Notes

• This PR is intentionally draft and exists to support review, provenance, and later commit-level intake decisions.