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PaperClipAI/scripts
Devin FoleyandClaude 0dfa0fb988 ci: refresh general-server shard duration manifest (#12075)
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## Thinking Path

> - Paperclip is the open source app people use to manage AI agents for
work
> - The PR verify workflow gates every pull request; its slowest check
sets the feedback time for all contributors
> - The general-server test lane splits its vitest suites across five
runners with a duration-weighted partition
(`scripts/general-server-shard.mjs`)
> - The partition reads a duration manifest that was sampled on
2026-08-04, when the lane had 279 suites and 946s of serial time
> - The lane has since grown to 405 suites and 1274s; 126 suites had no
recorded duration and one suite grew from 37s to 123s
> - The stale weights made the partition uneven: in the fully green
actions run 32708351172, "General tests (server (2/5))" ran 364s and was
the slowest check in the whole run, while sibling shards ran 292-330s
> - This pull request refreshes the manifest with per-suite durations
measured from that same run
> - The benefit is a level five-shard split (255s ±1s of predicted suite
time per shard), which removes ~50s from the slowest PR check

## Linked Issues or Issue Description

**Describe the current behavior**

In the fully green PR actions run
[32708351172](https://github.com/paperclipai/paperclip/actions/runs/32708351172)
(2026-08-24), the check "General tests (server (2/5))" completed in
364s. Its test step ran 315s while sibling shards ran 241-276s. It was
the slowest check in the run.

**Describe the improvement**

The duration manifest `scripts/general-server-shard-durations.json` is
stale. It holds 279 suites sampled on 2026-08-04, but the lane now has
405 suites. The 126 unknown suites fall back to the median weight
(~1.3s), and `server/src/__tests__/workspace-runtime.test.ts` grew from
37.4s to 123.3s. The partition therefore predicts a level split but
produces an uneven one. Refreshing the manifest restores the level split
without any code change.

**Expected impact**

All five server shards level at ~255s of predicted suite time (~310s job
time). The slowest PR check drops from 364s to about 317s, so the PR
critical path improves by roughly 50s.

## What Changed

- Regenerated `scripts/general-server-shard-durations.json` from actions
run 32708351172 (2026-08-24): 405 suites, 1274s total serial time (was
279 suites, 946s from 2026-08-04)
- Updated the `$comment` field to name the new sample run and date
- No code changes; the partition logic in
`scripts/general-server-shard.mjs` is untouched

## Verification

- Parsed all five "General tests (server (n/5))" job logs from run
32708351172 with the consecutive-completion-timestamp method described
in the manifest `$comment`; asserted that the parsed suite set equals
the exact file list that `run-vitest-stable.mjs` collects (405/405, no
misses, no extras)
- Ran `node scripts/run-vitest-stable.mjs --mode general --group
general-server --shard-index N --shard-count 5 --dry-run` for N=0..4
with the new manifest: each shard predicts 255s (±1s) of suite time, and
the five shards form a complete, non-overlapping cover of all 405 suites
- Ran `node --test
./scripts/__tests__/run-vitest-stable-shard.test.mjs`: 13/13 pass

## Risks

- Low risk. The change is data-only. Wrong weights cannot break
correctness: the partition always covers every suite exactly once, so
the worst case of a bad weight is an uneven shard, which is the current
state.

## Model Used

- Claude (Anthropic), model ID `claude-fable-5`, agentic coding session
with tool use (Claude Code / Claude Agent SDK)

## Checklist

- [x] I have included a thinking path that traces from project context
to this change
- [x] I have specified the model used (with version and capability
details)
- [x] I have checked ROADMAP.md and confirmed this PR does not duplicate
planned core work
- [x] I have searched GitHub for duplicate or related PRs and linked
them above
- [x] I have either (a) linked existing issues with `Fixes: #` / `Closes
#` / `Refs #` OR (b) described the issue in-PR following the relevant
issue template
- [x] I have not referenced internal/instance-local Paperclip issues or
links (only public GitHub `#NNN` / `github.com/paperclipai/paperclip`
URLs)
- [x] My branch name describes the change (e.g. `docs/...`, `fix/...`)
and contains no internal Paperclip ticket id or instance-derived details
- [x] I have run tests locally and they pass
- [x] I have added or updated tests where applicable (no code change;
existing partition tests pass)
- [x] I have updated relevant documentation to reflect my changes
(manifest `$comment` updated)
- [x] I have considered and documented any risks above
- [x] All Paperclip CI gates are green
- [x] Greptile is 5/5 with no open P2s, recommendations, or follow-ups
- [x] I will address all Greptile and reviewer comments before
requesting merge

Related prior work: #11528 (balanced the serialized server shards by
recorded duration), #10923 (split serialized tests into five shards),
#11156 (split workspaces-a into two shards).

Co-authored-by: Claude <noreply@paperclip.ing>
2026-08-24 08:54:52 -07:00
..