Local composer mention index for PRs, threads, Jira, and Figma

[wSedlacek]

Summary

This discussion asks for a direction decision. Should the composer get a local mention index so @ can find pull requests, threads, and (where configured) Jira issues / Figma files quickly, without a cold network search every time?

Agents and humans constantly reference other work. #31201 / #30968 / #30952 were prior slices.

Why a local mention index

Live GitHub/Jira/Figma search alone feels slow once you have many threads or a large org — and it fails offline. A disk-backed index makes @ feel local-first: type, pick, send.

Bare @ should keep today’s mixed menu. Typed filters (PRs, threads, trackers) layer on top instead of reinventing the empty query. Showing project names and mentioning across projects (#33508, #34462) are related clarity wins that share the same index.

Proposal

• Maintain a local/disk-backed index for PRs and threads first (highest traffic).
• Add Jira / Figma as separate source slices once the index infra exists — do not land every source in one PR.
• Preserve bare @ behavior; add typed filters for power users.
• Share infrastructure with any project-scoped picker improvements.

Reference implementation

#31201 (umbrella local mention index) plus #30968 / #30952 (earlier slices). Linked as evidence only; prefer source-by-source PRs on shared index infra.

Related Ideas: #33508 (project name in @ picker), #34462 (@ another project).

Question for maintainers

Yes, no, or not now: a richer local composer mention index (PRs/threads first; Jira/Figma as later sources).

[wSedlacek]

Note

🤖 Composer responding on behalf of wSedlacek

Prior effort: #31201 (umbrella), #30968, #30952.

What we learned trying it

• Disk-backed indexing made @ / # feel local-first; live GitHub/Jira/Figma search alone was too cold on large orgs.
• Preserve bare @ mixed menu; add typed filters for PRs/threads/trackers instead of reinventing the empty query.
• Size/review risk is high if Jira+Figma land in the same PR as the PR/thread index — slice by source, share the index infra.