Split the slow workspaces-a CI lane into two Vitest native shards and keep release verification in parity.
Co-Authored-By: Paperclip <noreply@paperclip.ing>
## Thinking Path
> - Paperclip uses CI to keep control-plane changes safe and mergeable.
> - The PR workflow splits serialized server tests across isolated
runners.
> - A recent successful run spent 305 seconds in serialized shard 2/4.
> - That job was the slowest check in the run.
> - The four shards reported about 739 seconds of Vitest suite time.
> - This pull request adds a fifth serialized shard and keeps release
verification aligned.
> - The benefit is a shorter PR critical path with no loss of test
coverage.
## Linked Issues or Issue Description
**What existing behavior does this improve?**
The PR and release verification workflows run serialized server tests in
four shards.
**Current behavior**
Successful PR run 30876682788 spent 305 seconds in `Verify serialized
server suites (2/4)`. The test step used 256 seconds and made this job
the slowest check.
**Proposed behavior**
Run the same serialized suite set in five complete and non-overlapping
shards.
**Reason and benefit**
The measured suites reported about 739 seconds of total Vitest time.
Five runners reduce the expected average suite time from about 185
seconds to about 148 seconds before setup overhead.
**Breaking changes**
None. The change only alters CI partition size.
## What Changed
- Split serialized server tests into five shards in the PR workflow.
- Apply the same five-shard layout to release verification.
- Add a partition test that proves complete and non-overlapping
serialized coverage.
- Update release workflow coverage tests for five shards.
## Verification
- `node --test scripts/__tests__/run-vitest-stable-shard.test.mjs
scripts/__tests__/release-verify-workflow.test.mjs`
- `git diff --check`
## Risks
- Low risk. CI uses one additional runner for the serialized lane.
- Round-robin partition weights can still vary as suite timings change.
> This change does not overlap with planned core work in `ROADMAP.md`.
Related PR #10663 optimized the separate general-server lane.
## Model Used
- OpenAI Codex, GPT-5, agentic coding with reasoning, tool use, and code
execution.
## 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
Co-authored-by: Devin Foley <139239+devinfoley@users.noreply.github.com>
## Thinking Path
> - Paperclip is the open source app people use to manage AI agents for
work.
> - Releases publish the same app and package set that operators
install, so release verification should keep full release-strength
coverage.
> - The release workflow currently verifies stable and canary releases
with one serial job that typechecks, runs all tests, and builds.
> - The PR workflow already proves the test surface can be split into
grouped general suites and serialized shards without changing coverage.
> - This pull request extracts the release verify work into a reusable
workflow and fans out the independent lanes.
> - The benefit is faster stable and canary release verification while
preserving the existing publish and preview gates.
## Linked Issues or Issue Description
No public GitHub issue exists for this CI improvement.
**Subsystem affected**
Cross-cutting (multiple of the above)
**Problem or motivation**
Release verification spends most of its wall time in a single serial
test step even though the same stable test surface is already
partitioned for PR CI. Stable dispatches and master-push canaries
therefore wait on one long runner after setup, typecheck, tests, and
build run sequentially.
**Proposed solution**
Add a reusable release verification workflow with parallel typecheck,
grouped general tests, serialized test shards, and build lanes. Have
both stable and canary release verification call it with the ref they
need to verify.
**Alternatives considered**
Keeping the serial `pnpm test:run` job preserves the old shape but keeps
stable and canary releases waiting on one long runner. Skipping
verification when a source SHA already has green CI would be faster, but
adds stale-check and lookup risk beyond this change.
**Roadmap alignment**
No overlapping item found in `ROADMAP.md`; this is release CI
maintenance.
**Additional context**
The new workflow keeps the release-strength full `pnpm -r typecheck`,
uses the existing stable test grouping/sharding entry points, and leaves
publish/preview jobs unchanged.
## What Changed
- Added `.github/workflows/release-verify.yml` as a `workflow_call`
workflow accepting a `ref` input.
- Split release verification into parallel `typecheck`, `general_tests`,
`serialized_tests`, and `build` jobs with 20-minute lane timeouts.
- Mirrored the PR workflow's stable test partition: `general-server`
shards 1-3, `general-workspaces-a`, `general-workspaces-b`, and four
serialized shards.
- Replaced `release.yml` `verify_canary` and `verify_stable` job bodies
with calls to the reusable workflow while leaving publish and preview
jobs unchanged.
- Added a Node test that guards the release workflow delegation and
split verify surface.
## Verification
- `actionlint 1.7.12 .github/workflows/release.yml
.github/workflows/release-verify.yml`
- `node ./scripts/release-package-map.mjs check`
- `node --test ./scripts/__tests__/release-verify-workflow.test.mjs
./scripts/__tests__/run-vitest-stable-shard.test.mjs`
- `git diff --check`
## Risks
- Release verification now starts more jobs per release event,
increasing total runner setup/install minutes. This matches the existing
PR CI tradeoff and should reduce release wall time substantially.
- The called workflow checks out the requested ref shallowly. That is
intentional for verify lanes; publish and preview jobs still retain
their existing full-history checkouts.
> For core feature work, check [`ROADMAP.md`](ROADMAP.md) first and
discuss it in `#dev` before opening the PR. Feature PRs that overlap
with planned core work may need to be redirected — check the roadmap
first. See `CONTRIBUTING.md`.
## Model Used
OpenAI Codex, GPT-5-class coding agent in local tool-use mode with shell
execution, repository editing, GitHub connector access, and medium
reasoning.
## 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
- [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
---------
Co-authored-by: Paperclip <noreply@paperclip.ing>
Devin Foley
dependabot[bot]
Dotta