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## Thinking Path
> - Paperclip is the open source app people use to manage AI agents for
work
> - Pull requests to this repository run a large CI matrix. The slowest
check sets the time a contributor waits for a green run.
> - The `General tests (workspaces-b)` lane runs every non-server Vitest
project except `ui` and `cli` in one job, one project after the other.
After #15826 leveled the server shards, this lane became the slowest
check: 593s in run 38084171761, 523s in 38083084276 and 499s in
38083020834 (all 2026-10-10).
> - The `@paperclipai/db` project alone is 168s to 250s of that lane's
436s to 513s of vitest time. Its `client.test.ts` suite is 117s to 189s
and `backup-lib.test.ts` is 70s to 107s. The other seventeen projects
together are only 263s to 276s.
> - Vitest's native `--shard` does not level this lane. The db project
is already file-parallel, and a hash-ordered slice can put both slow
suites on one runner.
> - This pull request moves the db project into its own `workspaces-c`
lane in both `pr-trusted.yml` and `release-verify.yml`. The runner
script gains a `general-workspaces-c` group, and `general-workspaces-b`
drops the db project.
> - The benefit is that both lanes should finish in about 230s to 340s
instead of 499s to 593s, and `workspaces-b` leaves the critical path.
The cost is one more job per run, about 60s of setup.
## Linked Issues or Issue Description
**Describe the enhancement**
The `General tests (workspaces-b)` PR check is the slowest check in the
run. It runs seventeen Vitest projects in sequence on one runner. The
`@paperclipai/db` project is one third to one half of its vitest time.
**Why is this needed**
The slowest check decides the wall-clock time of every PR run. In the
last three fully green runs on the current server-shard manifest,
`workspaces-b` took 499s, 523s and 593s (runs 38083020834, 38083084276
and 38084171761, 2026-10-10). The next slowest lanes, `Build` and the
server shards, sit at about 480s to 570s. A split of `workspaces-b`
removes 170s to 250s from this lane.
**Proposed solution**
Run the `@paperclipai/db` project as its own lane,
`general-workspaces-c`. Keep the other seventeen projects in
`general-workspaces-b`. Add the lane to both the PR and the release
verification matrix. Extend the guard tests so the three workspace lanes
still cover the root Vitest project list exactly once, so the new group
rejects shard flags, and so both workflows carry the lane unsharded.
**Alternatives considered**
- Vitest native `--shard` on `workspaces-b`, as `workspaces-a` does. The
db project is already file-parallel and its wall time is set by two long
suites, so a hash-ordered slice does not give a predictable split.
- Move `adapter-utils` (115s to 117s) into the new lane as well. That
makes the db lane 285s to 366s of tests and the rest 147s to 160s, which
is less level than db alone (168s to 250s) against the rest (263s to
276s).
- Three lanes. Not needed now: after this split both lanes sit under the
server shards and `Build`, so a third runner would not shorten the run.
## What Changed
- `scripts/run-vitest-stable.mjs`: new `general-workspaces-c` group that
runs `@paperclipai/db` alone. `general-workspaces-b` now excludes it.
Local `--mode all` runs all four general groups, so every project still
runs once. The dry-run output reports the new group's projects.
- `.github/workflows/pr-trusted.yml`: a `workspaces-c` entry in the
general tests matrix, with a comment that records the 2026-10-10
measurements.
- `.github/workflows/release-verify.yml`: the same `workspaces-c` entry,
to keep parity with the PR workflow.
- `scripts/__tests__/run-vitest-stable-shard.test.mjs`: the coverage
test includes the new group; shard flags are rejected for both
`workspaces-b` and `workspaces-c`; a new test asserts that
`workspaces-c` runs only the db project, that `workspaces-b` no longer
carries it, and that both workflows list both lanes without shard
arguments. The workflow check parses each `- group:` matrix entry with
comment lines removed, so a comment between keys cannot hide a shard
setting, and it first confirms the parser sees the shard keys on the
`workspaces-a` entries. A small parser test covers the
comment-between-keys case (Greptile P2).
- `scripts/__tests__/release-verify-workflow.test.mjs`: the release
workflow must carry `general-workspaces-c`.
## Verification
- `GITHUB_WORKFLOW= node --test
scripts/__tests__/run-vitest-stable-shard.test.mjs`: 32 pass (was 29).
- `node --test scripts/__tests__/release-verify-workflow.test.mjs`: the
workflow parity test passes. Two unrelated tests in that file (`a
publisher lockfile lets a fresh smoke install retain validation after
... drift`) fail on my machine on pristine `master` too, because `pnpm`
is not on its PATH. They pass in CI.
- `node scripts/run-vitest-stable.mjs --mode general --group
general-workspaces-c --dry-run` reports `["@paperclipai/db"]`; `--group
general-workspaces-b` reports the other seventeen projects.
- Both workflow files parse as YAML; the general tests matrix has 19
entries in `pr-trusted.yml` and 17 in `release-verify.yml`.
- This PR's own run exercises the script change but not the workflow
change: `pr.yml` calls `pr-trusted.yml@master`, so the matrix comes from
`master` and the `workspaces-c` job appears only on PR runs created
after the merge. Because the script comes from this branch, the
`workspaces-b` job in this PR's run (38090713637) ran the seventeen
remaining projects and finished in 340s, inside the expected 325s to
340s band. No job in that run ran `@paperclipai/db`.
- To cover the gap, I ran the new lane locally with the same command CI
uses, `pnpm test:run:general -- --group general-workspaces-c`: 49 test
files, 180 tests, all passed, 111s of vitest time (c324d0080, Node 25,
PGlite).
Expected result on the first PR run after merge, from the three measured
runs:
| Check | Before | After (expected) |
| --- | --- | --- |
| `General tests (workspaces-b)` | 499-593s | ~325-340s (263-276s of
vitest time plus ~60s of setup) |
| `General tests (workspaces-c)` | (new) | ~230-310s (168-250s of vitest
time plus ~60s of setup) |
| Slowest check in the run | `workspaces-b` | `Build` (497-570s) or a
server shard (~480-520s) |
## Risks
- Low risk. The group split only changes which job runs the db project.
The guard test asserts that the three workspace lanes cover the root
Vitest project list exactly once, so a project cannot be dropped or run
twice.
- One more job per PR and release verification run, about 60s of setup
time on the runner fleet.
- The lane names are matrix labels only. The required checks are `ci /
verify` and `ci / e2e`, which aggregate the matrix, so no branch ruleset
needs an update.
## Model Used
- Claude (Anthropic), model ID `claude-fable-5-1`, running as a
Paperclip agent through the Claude local adapter with tool use (shell,
file edits, GitHub CLI). The agent collected the CI data, made the
change, ran the tests, and wrote this description.
## 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)
- [ ] 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
- [x] I have updated relevant documentation to reflect my changes
- [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
🤖 Generated with [Claude Code](https://claude.com/claude-code)
---------
Co-authored-by: Bender (Fable) <noreply@anthropic.com>
Co-authored-by: devinfoley <139239+devinfoley@users.noreply.github.com>