## Thinking Path
> - Paperclip uses pull request CI to test changes before merge.
> - The e2e PR lane runs Playwright specs in a shard matrix.
> - Each shard builds a list of spec files for its matrix entry.
> - The workflow passed that list after a literal `--` separator.
> - Playwright did not receive the list as file filters.
> - This pull request removes the separator and adds a guard test.
> - The benefit is that each e2e shard runs only its assigned specs.
## Linked Issues or Issue Description
Refs #10629.
**What happened?**
The e2e shard step used `pnpm run test:e2e -- $specs`. The shard spec
list was not applied as Playwright file filters.
**Expected behavior**
Each e2e shard should pass only its selected specs to Playwright.
**Steps to reproduce**
1. Inspect `.github/workflows/pr.yml` at the merge commit for #10629.
2. Find the `e2e_shards` command that invokes `pnpm run test:e2e`.
3. See the literal `--` before `$specs`.
**Paperclip version or commit**
`86767951`
**Deployment mode**
GitHub Actions PR CI.
## What Changed
- Removed the literal `--` from the e2e shard `pnpm run test:e2e $specs`
invocation.
- Added a regression test that checks the workflow passes `$specs`
without that separator.
## Verification
- `node --test scripts/__tests__/e2e-shard.test.mjs`
## Risks
Low risk. This changes one CI command and one workflow guard test. The
main risk is shell argument handling in the workflow, and the guard now
covers the expected command shape.
## Model Used
OpenAI GPT-5 through Codex. The run used shell and GitHub CLI tool
access. The runtime did not expose a context window size.
## 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>
## Thinking Path
> - Paperclip is the open source app people use to manage AI agents for
work.
> - The pull request workflow protects changes with a Playwright e2e
lane.
> - That lane already uses a weighted file partition so slow specs do
not cluster by test count.
> - Recent green PR runs showed the two e2e shard jobs were slower than
the next slow required lane.
> - The largest spec is indivisible, so a third shard lets that spec run
alone and lets the rest split by duration.
> - This pull request changes only the PR e2e shard matrix and the guard
test.
> - The benefit is a shorter expected PR critical path while the
required `e2e` aggregate check name stays stable.
## Linked Issues or Issue Description
Refs #9923
**What existing behavior does this improve?**
The `pull_request` workflow Playwright e2e lane.
**Subsystem affected**
Cross-cutting: GitHub Actions CI and test scripts.
**Current behavior**
The PR workflow runs the weighted Playwright e2e partition across two
jobs. Recent green runs showed those jobs as the slowest required
checks.
**Proposed behavior**
The PR workflow runs the same e2e spec set across three weighted jobs.
The aggregate required check stays named `e2e`.
**Reason and benefit**
The third shard lets the slow smoke-lab spec run alone while the rest of
the catalog stays balanced. This should shorten the PR critical path.
The win is bounded by fixed per-job setup time.
**Breaking changes**
None. The required aggregate check contract is preserved.
## What Changed
- Change the PR e2e shard matrix from two entries to three entries.
- Update the shard guard test to expect three shards.
- Floor the balance bound at the largest single spec weight.
- Assert that the workflow does not define more shard indexes than
`SHARD_COUNT`.
## Verification
- `node --test ./scripts/__tests__/e2e-shard.test.mjs` passes with 6
tests.
- The recorded-weight partition is complete and non-overlapping: 168.0s,
116.5s, and 114.4s.
- I checked `ROADMAP.md` and found no overlapping roadmap-level core
feature.
- I searched public GitHub PRs and issues for related e2e shard work. I
found related PR #9923 and no open duplicate for this branch or change.
## Risks
- This adds one extra GitHub Actions runner to the PR e2e lane.
- The wall-clock win is bounded by fixed per-job setup.
- Behavior risk is low because the aggregate required check remains
named `e2e`.
## Model Used
OpenAI Codex, GPT-5, tool-enabled coding agent in this repository. The
runtime did not expose the context-window size.
## 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: Cody <noreply@paperclip.ing>
## Thinking Path
> - Paperclip is the open source app people use to manage AI agents for
work.
> - The pull request workflow is the main merge gate for changes to that
app.
> - The Playwright e2e lane is expensive because every spec shares one
isolated server and runs serially.
> - Splitting that lane across runners shortens the critical path, but
the public required-check contract still needs a check named exactly
`e2e`.
> - This pull request shards the real e2e work while preserving a fast
aggregate `e2e` job for branch protection.
> - The benefit is a faster PR workflow without making otherwise-good
PRs unmergeable because a legacy required check disappeared.
## Linked Issues or Issue Description
No public GitHub issue exists for this CI follow-up.
Related prior CI work:
- Refs #8360
- Refs #9168
- Refs #9516
Bug report:
### What happened?
Sharding the PR e2e lane directly at the workflow job level changes the
emitted check names to shard-specific names, while existing branch
protection expects a check named exactly `e2e`.
### Expected behavior
The PR workflow should be able to run e2e specs across multiple runners
while still emitting a stable aggregate check named `e2e`.
### Steps to reproduce
1. Open a PR against `master`.
2. Run the PR workflow with the e2e lane split only as a matrix job.
3. Observe that the shard checks complete, but a required check named
exactly `e2e` never appears.
### Paperclip version or commit
Current `master`.
### Deployment mode
GitHub Actions pull request workflow.
## What Changed
- Added `scripts/e2e-shard.mjs`, which partitions default Playwright e2e
specs by recorded per-spec duration.
- Added `scripts/e2e-shard-durations.json` with measured e2e spec
durations so the slow smoke-lab spec does not dominate one runner.
- Split the PR workflow e2e lane into two `e2e_shards` matrix jobs and
added a fast aggregate job named exactly `e2e`.
- Added `scripts/__tests__/e2e-shard.test.mjs` to lock the shard
partition, ignored-spec sync, manifest coverage, and aggregate
required-check contract.
## Verification
- `node --test scripts/__tests__/e2e-shard.test.mjs`
- `node --test scripts/__tests__/run-vitest-stable-shard.test.mjs`
- `git diff --check upstream/master..HEAD`
- Searched GitHub for duplicate or related e2e-shard / required-check
PRs and issues before opening this PR; no direct duplicate was found.
## Risks
Low risk. The main risk is that the duration manifest can drift as specs
are added or runtimes change; missing specs fall back to the median
known duration, and the focused shard test catches empty, overlapping,
or badly imbalanced partitions.
## Model Used
OpenAI GPT-5 via Codex CLI coding agent, with shell/tool execution and
repository inspection.
## 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