## Summary
The issue digest uses recent posts, comments, and reactions to decide
which issues deserve attention. A single active user could previously
raise an issue's apparent importance by commenting or reacting multiple
times in the window.
This changes `codex-issue-digest` so `user_interactions` counts unique
human GitHub users per issue across new issue posts, new comments, and
new reactions. Raw reaction/comment counts are still preserved for
detail output, and the skill guidance now describes `Interactions` as a
unique-human-user count.
## Why
The `codex-issue-digest` skill was producing more detail than the daily
digest needed, and broad all-area digests could miss active issues. In
particular, issue #16088 had substantial recent comments and reactions
but did not appear in the weekly all-areas output because GitHub search
was using default relevance ranking and the collector could exhaust its
candidate cap before later search queries got a fair sample.
That made the digest look quieter than the underlying user activity and
made threshold tuning misleading.
## What changed
- Make the digest summary headline-first and summary-only by default.
- Add an explicit opt-in flow for `## Details`, so the issue table is
shown only when requested or when the prompt asks for details upfront.
- Update the collector to request GitHub issue search results with
`sort=updated` and `order=desc`.
- Apply the search candidate cap per query instead of globally across
all queries.
- Bump the collector script version to `3`.
- Add tests that cover updated sorting and per-query candidate limits.
## Verification
- `pytest
.codex/skills/codex-issue-digest/scripts/test_collect_issue_digest.py`
- `ruff check
.codex/skills/codex-issue-digest/scripts/collect_issue_digest.py
.codex/skills/codex-issue-digest/scripts/test_collect_issue_digest.py`
- `git diff --check`
- Reran the all-areas weekly collector and confirmed #16088 is now
included with `55` interactions.
Problem: Maintainers need a shared way to run Codex GitHub issue digests
without copying large prompts or relying on manual GitHub page
summaries.
Solution: Add a reusable codex-issue-digest skill with a deterministic
GitHub collector, owner/all-label windows, reaction-aware activity
metrics, scaled attention markers, and focused tests.
