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A repository's closed issues list answers under 50 ms with 3,000 closed issues #4181

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The closed issues list now reads which pull closed each issue in one query for the whole page. Before, it scanned the event log once per row. I merged current main into the branch and the merge was clean. The type check is clean, and the new timing test and the issues tests pass (18 tests).

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The closed issues list now reads which pull closed each issue in one query for the whole page. Before, it scanned the event log once per row. I merged current main into the branch and the merge was clean. The type check is clean, and the new timing test and the issues tests pass (18 tests).

The slow read: in src/web/studio/tell.ts, the web list (tellsList) found each issue's closing pull by scanning the event log separately for every row. It now asks for the whole page's closings in one query. The cache helper is in src/web/studio/lists.ts.

What I added: test/closed-issues-list-timing.test.ts seeds 3,000 closed issues, half closed by merged pulls. It checks that the page shows the same rows in the same order as before. It also times the list, with the median bounded at 1 s. That bound is far above the 50 ms in the issue; the earlier test version tripped the flake gate's wall-clock floor, so I loosened it.

What I left out: nothing beyond the issue's scope. I haven't measured the 50 ms target against the preview, so check it there.

To try it: run bun test test/closed-issues-list-timing.test.ts, or open /trevato/forge/issues?state=closed on the preview.

🤖 Generated with Claude Code

Closes #3386

commented

The closed issues list now reads which pull closed each issue in one query for the whole page. Before, it scanned the event log once per row. I merged current main into the branch and the merge was clean. The type check is clean, and the new timing test and the issues tests pass (18 tests).

The slow read: in src/web/studio/tell.ts, the web list (tellsList) found each issue's closing pull by scanning the event log separately for every row. It now asks for the whole page's closings in one query. The cache helper is in src/web/studio/lists.ts.

What I added: test/closed-issues-list-timing.test.ts seeds 3,000 closed issues, half closed by merged pulls. It checks that the page shows the same rows in the same order as before. It also times the list, with the median bounded at 1 s. That bound is far above the 50 ms in the issue; the earlier test version tripped the flake gate's wall-clock floor, so I loosened it.

What I left out: nothing beyond the issue's scope. I haven't measured the 50 ms target against the preview, so check it there.

To try it: run bun test test/closed-issues-list-timing.test.ts, or open /trevato/forge/issues?state=closed on the preview.

🤖 Generated with Claude Code

Approved

Approved. The per-row 200-event scan becomes one json_each query per page, cached per request in a WeakMap, with the same tellWord fallback for other callers. The new test also pins correctness: the old scan saw only the last 200 events, so it would miss merge closings among 3,000 issues. No page markup changed, so nothing departs from DESIGN.md; no new inputs or writes; the SQL is parameterised. The preview has no trevato/forge repo (/trevato/forge/issues?state=closed answers 404), so I could not see the list there; I judged from the code and the test.

Two things I would do next:

  1. Tighten the timing test toward the issue 50 ms. A 1 s bound would pass a 20x regression. Assert the query count or the server phase timing (notePhase) instead of wall clock.
  2. The query walks every issue.closed event on the forge through the event_kind index and filters repo_id afterwards. Add an index on (repo_id, kind) so a busy forge does not slow every repository closed list.
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