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Author	SHA1	Message	Date
3 people	352153b5ed	fix: run the cargo-building native-runner CI suite in the Rust-cached vitest lane (#13586) ... ## Thinking Path Post-merge of #13557, the slowest check on the freshest fully-green PR run ([35246999382](https://github.com/paperclipai/paperclip/actions/runs/35246999382)) was `ci / General tests (server (1/12))` at **339s**. The cause is one suite: `server/src/services/native-runtime/native-codex-runner.integration.test.ts` runs 1 test in **277s of a 291s vitest step (95%)** because its `beforeAll` cargo-builds the Runner release binaries, and the general-server shards carry no Rust cache — every PR run cold-compiles the full third-party crate graph. The other 19 suites in that shard finish in under 70ms each. The obvious fix (a dedicated Rust-cached matrix lane) requires editing workflow files, which the available GitHub App credentials cannot push (`workflows` permission). But the `Verify Paperclip Runner` lanes **already restore the shared `release-runner-v1` Rust cache read-only**, and their commands are `pnpm --filter @paperclipai/paperclip-runner <package script>` — so the suite can move into a Rust-cached lane purely through script changes. ## What Changed - `scripts/run-vitest-stable.mjs`: new `general-server-native-runner` group carrying exactly that suite. Under the PR workflow (`GITHUB_WORKFLOW == "PR"`, inherited from `pr.yml` by the reusable `pr-trusted.yml`) the without-chat server shards exclude it and rebalance to ~211s of tests each. Every other caller — local runs, `release-verify.yml` under the Release / Cloud readiness workflows — keeps the suite in the shards, so a renamed or unknown workflow degrades to today's slower-but-covered behavior instead of dropping coverage. - `packages/paperclip-runner`: `test:typescript:vitest` now routes through `scripts/run-pr-vitest-lane.mjs` — the identical `ensure:eval-build-deps && build:rust && vitest run` chain (shard flags passed through), plus the native-runner group on the **final PR shard only** (`--shard=N/M` with `N == M`, i.e. today's `vitest 2/2`, the 122s lane). With the restored cache the suite's cargo build becomes an incremental rebuild. - `scripts/__tests__/run-vitest-stable-shard.test.mjs`: guards pin the whole contract — PR 12-shard coverage (shards + chat + native-runner = full server group exactly), Release/local 10-shard runs keep the suite, `pr.yml` is named `PR`, the vitest lanes partition with exactly one final shard, the package-script wiring, and the wrapper's shard/workflow gating via its `--dry-run` plan output. No workflow files change. `.github/workflows/*` are untouched. ## Verification - `node --test scripts/__tests__/run-vitest-stable-shard.test.mjs scripts/__tests__/release-verify-workflow.test.mjs`: **36/36 pass** locally on this branch (includes the new coverage, wiring, and wrapper-gating guards). Both files run in CI's `Test general-server shard partition` / `Test release verify workflow wiring` steps. - Wrapper `--dry-run` plan matrix verified for all six shard/workflow combinations plus malformed-shard rejection (pinned as a guard test). - The executing proof is this PR's own CI: `ci / Verify Paperclip Runner (vitest 2/2)` must go green while running the native-runner suite (its log will show the `general-server-native-runner` group after the package vitest shard), and the 12 `ci / General tests (server (x/12))` shards must go green without it. ## Risks - The exclusion keys on `GITHUB_WORKFLOW == "PR"`. Failure mode of a rename is safe (suite falls back into the server shards, slower but covered) and the guard test on `pr.yml`'s name makes it loud. - `vitest 2/2` grows from ~122s to an expected ~210–260s — still well under the ~306s `vitest 1/2` and ~326s e2e shards, and inside the 20-minute lane timeout. If the cache misses (key drift), the lane pays a cold compile like the server shard does today; a miss is slow, never wrong. - Double-run/coverage-loss combinations are enumerated in the wrapper header and pinned by tests: each caller runs the suite exactly once. ## Model Used Claude (Bender agent, Paperclip) — Fable 5. --- Expected savings once merged: the 339s `server (1/12)` check drops to ~265s-equivalent shard levels (~211s of tests), the slowest `ci /` check becomes the ~326s e2e shard (~13–33s off PR wall time), and every PR run stops paying ~4.5 min of billed cold Rust compile. For the merger (squash): please keep the trailer below in the squash body to preserve authorship. `Co-Authored-By: Bender (Fable) <Paperclip-Paperclip@users.noreply.github.com>` ## Related PRs Searched the GitHub PR list for prior work on this surface — related groundwork, none duplicate this change: - #13457 — restored master's Rust dependency cache on the PR runner lane (the read-only cache this PR relies on) - #13500 — made that cache key image-toolchain-independent so GitHub-hosted PR runners actually hit it - #13521 — rebalanced PR shards and split the Verify Paperclip Runner lanes this PR extends - #13557 — previous health-check iteration (split the runnerd transport suite); this PR targets the next slowest check ## Checklist - [x] I have searched GitHub for duplicate or related PRs and linked them above Co-authored-by: Bender (Fable) <Paperclip-Paperclip@users.noreply.github.com> Co-authored-by: Claude Fable 5 <noreply@anthropic.com>	2026-09-18 07:22:12 -07:00