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PaperClipAI/doc/RELEASE-AUTOMATION-SETUP.md
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DottaandPaperclip a194166017 perf(ci): repair dependency caches and parallelize transport fixtures (#18883)
## Thinking Path

> - Paperclip is the open source app people use to manage AI agents for
work.
> - Required CI checks protect changes to its native Runner and control
plane.
> - Recent Runner jobs restored a Rust cache but still rebuilt
dependencies for 74–92 seconds.
> - New workspace install hooks disabled the materialized JavaScript
dependency cache.
> - A single transport file also kept 326 test cases on one worker.
> - This pull request corrects the cache inputs, replays known install
hooks, and separates independent transport test groups.
> - The same checks can finish sooner without removing test cases or
widening runner access.

## Linked Issues or Issue Description

Refs #18794 and #18544. Related dependency-action version update:
#17698; this change fixes the cache input contract used by the currently
pinned action.

**What happened?**

Recent PR jobs such as #18783 and #18825 restored an exact Rust
dependency cache from October 16. The virtual workspace's development
profile changed on October 30. Rust Cache 2.9.2 hashes member manifests
but omits that virtual manifest. Rebuilding cannot replace an immutable
exact cache entry. The JavaScript cache also rejected the new server and
Runner Copilot postinstall hooks.

**Expected behavior**

Changing a Cargo profile selects a new dependency cache. An exact
JavaScript dependency restore still performs required workspace install
hooks. Independent transport fixtures use the existing file workers
while retaining all assertions and real deadlines.

**Steps to reproduce**

Inspect the Rust dependency cache hit and following `build:rust` in the
recent Runner package jobs. Run `node scripts/ci-dependency-cache.mjs`
on the previous revision to see `cacheable: false`. Run the original
transport file to measure the serial test work.

## What Changed

- Add the virtual workspace manifest and ancestor Cargo configuration to
all shared Rust dependency keys. Keep reader/writer identities aligned
and preserve master-only cache writes and CODEOWNERS-only AWS routing.
- Recognize only the exact reviewed root, server, and Runner postinstall
commands. Include the server/Runner installer scripts in the dependency
key. Replay workspace postinstall hooks after a materialized restore.
Unknown lifecycle hooks still disable reuse.
- Move attachment recovery, warm attachment, live adoption, and
suspension fixtures into separate files. Keep the large event-backlog
cases in the original file to avoid starting another expensive fixture
group at the same time. Share five stateless test helpers outside
production source.
- Extend the opt-in `profile-ci` benchmark with a PR-scoped Rust cache
producer and a fresh-host consumer. Require exact dependency/workspace
hits and reject any Cargo unit that is rebuilt. Retain the JSON build
evidence. Existing setup qualification checks real JavaScript cache
restores.
- Schedule the ten measured files over 50 seconds first, in approximate
duration order. Package CI uses up to four workers, bounded by available
CPUs; local runs retain Vitest defaults. The AWS runner has four CPUs
and 16 GiB RAM; the three-worker run averaged 44% CPU and peaked at 15%
memory. Preserve Vitest selection and shard membership and default
ordering for other files. Job count and AWS authorization are unchanged.
- Scope the optional paired server benchmark to changes in its measured
inputs. Cache-only changes qualify exact restores and run the shared
package tests using restored dependencies.
- Update the cache and test documentation and the existing native cache
contract guard.

## Verification

- All 586 `.github/scripts/tests/*.test.mjs` policy tests passed,
including cache trust and runner routing guards. Actionlint passed for
all three changed workflows.
- All 169 original top-level transport test definitions remain
byte-identical. The original file passed all 326 cases in 317.99 seconds
on this macOS host. A clean preliminary split passed the exact same
named cases in 183.01 seconds with the same four-worker cap.
- Preserve the first failed experiment: its parallel run overlapped the
policy suite and timed out in the 1,024-event settled backlog case at 60
seconds; 325 cases passed. A clean repeat passed, but that does not
establish the earlier failure's sole cause. The final layout keeps the
backlog cases in the original file. The final layout passed the same 326
cases in 186.35 seconds (41.4% faster than the 317.99-second baseline).
The original test bodies and all timeouts remain unchanged.
- Fresh-host Rust qualification passed: all 308 compilation units were
fresh, and Cargo completed in 1.59 seconds on a new runner ([final-head
run](https://github.com/paperclipai/paperclip/actions/runs/41745082837/job/126296908816)).
JavaScript setup dropped from 46 seconds cold to 23 seconds with exact
dependency/build restores; all 1,052 shared-package cases passed against
the restored tree ([final-head
job](https://github.com/paperclipai/paperclip/actions/runs/41745082837/job/126295937797)).
The previous qualification also passed (43 to 19 seconds) and confirmed
all three postinstall hooks replayed. These are qualification results,
not an end-to-end PR timing claim.
- Initial full AWS package run passed 4,907 cases with 10 existing
skips. The original-file remainder fell to 118.7 seconds, but the
100-second deadline file started last, leaving the full package at
417.43 seconds. Starting only three long files first passed 4,911 cases
(including four new sequencer guards) in 422.54 seconds, so reordering
alone did not improve full-package time. Summed file execution was 1,202
seconds across three busy workers. The final four-worker configuration
passed **4,912 cases, with the same 10 existing skips**, in **324.99
seconds**, a **23.1% reduction** from 422.54 seconds. The five added
cases guard ordering, selection, sharding, and path handling. Peak
memory was 17.95% of the 16 GiB runner; average CPU was 49.14%
([final-head package
job](https://github.com/paperclipai/paperclip/actions/runs/41745082974/job/126296339480)).
- Local workspace typecheck and build passed. The complete local `pnpm
test:run` passed all six chat partitions but reported failures in one
existing OAuth redirect case and one gateway authority case in the
general-server group. Both focused repetitions passed (three OAuth cases
and one gateway case), and a complete repeat of both files passed all
593 cases in 42.89 seconds; that does not explain the original failures.
The broad local run was stopped after 61 minutes once full final-head CI
had passed; its remaining general/workspace/serialized work was not
completed locally, and it is not reported as a pass. Original failure
logs were retained. Full final-head CI provides the complete suite
validation. Sequencer selection/shard guards and the 11-case transport
suspension smoke passed. The corrected release workflow guard passed all
71 tests.
- The first CI run failed only the policy guard that still expected the
old native cache key; downstream aggregate checks also failed. That
guard now checks the new profile/config prefix and existing
host/target/protocol suffix. A second policy run found that the new
sequencer test imported Vitest in the dependency-free policy lane; it
now runs in the Runner package lane, where all four cases pass. Greptile
reviewed final head `8011f84189` at 5/5 with no actionable findings and
confirmed this issue fixed. Final-head policy, typecheck, build, and
review passed. At 23:52:46 UTC on November 3, several AWS jobs were
terminated together: the Runner package process received SIGTERM and
browser logs recorded a runner shutdown signal. The failed/cancelled
jobs passed on the same-head retry, including required `ci / verify`; no
assertion or timeout was changed in response. The final concurrency
adjustment at `fe5a69bb0b` also received Greptile 5/5 with no actionable
findings. Final-head required CI, including `ci / verify`, passed
([aggregate](https://github.com/paperclipai/paperclip/actions/runs/41745082974/job/126300554711)).
Local timings exclude install, build, cache transfer, and CI queue time.

## Risks

A new Rust key needs one successful canonical master build before
ordinary PRs can hit it. The fresh-host qualification uses separate
PR-scoped entries. Parallel test files can increase I/O contention; case
execution inside each file, timeouts, and assertions are unchanged. Two
extracted suites exceed 1,000 lines because they retain existing
multi-stage recovery fixtures unchanged; one parameterized fixture alone
is 1,059 lines. No production execution logic, lockfile, credentials,
runner trust gates, or required check is removed.

## Model Used

OpenAI GPT-6 through Codex, with reasoning, repository editing, command
execution, and GitHub inspection. The host does not expose a more
precise model snapshot or 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 — targeted checks passed;
the broad-run failures and repetitions are documented above
- [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>
2026-11-03 20:17:08 -06:00

24 KiB

Release Automation Setup

This document covers the GitHub and npm setup required for the current Paperclip release model:

  • automatic canaries from master
  • manual stable promotion from a chosen source ref
  • npm trusted publishing via GitHub OIDC
  • protected release infrastructure in a public repository

Repo-side files that depend on this setup:

  • .github/workflows/release.yml
  • .github/CODEOWNERS

Note:

  • the release workflows intentionally use pnpm install --no-frozen-lockfile
  • this matches the repo's current policy where pnpm-lock.yaml is refreshed by GitHub automation after manifest changes land on master
  • the publish jobs then restore pnpm-lock.yaml before running scripts/release.sh, so the release script still sees a clean worktree

1. Merge the Repo Changes First

Before touching GitHub or npm settings, merge the release automation code so the referenced workflow filenames already exist on the default branch.

Required files:

  • .github/workflows/release.yml
  • .github/CODEOWNERS

2. Configure npm Trusted Publishing

Do this for every public package that Paperclip publishes.

At minimum that includes:

  • paperclipai
  • @paperclipai/server
  • @paperclipai/ui
  • public packages under packages/

2.1. In npm, open each package settings page

For each package:

  1. open npm as an owner of the package
  2. go to the package settings / publishing access area
  3. add a trusted publisher for the GitHub repository paperclipai/paperclip

2.2. Add one trusted publisher entry per package

npm currently allows one trusted publisher configuration per package.

Configure:

  • workflow: .github/workflows/release.yml

Repository:

  • paperclipai/paperclip

Environment name:

  • leave the npm trusted-publisher environment field blank

Why:

  • the single release.yml workflow handles both canary and stable publishing
  • GitHub environments npm-canary and npm-stable still enforce different approval rules on the GitHub side

2.2.1. Newly added public packages need a bootstrap phase

Trusted publishing is configured on the npm package itself, not at the repo scope. That means a brand-new public package must not be auto-enrolled into CI publishing until its npm package exists and its trusted publisher has been configured.

Repo policy:

  1. add every non-private package to scripts/release-package-manifest.json
  2. set "publishFromCi": true only when CI is expected to publish that package
  3. if the package is not ready for CI publishing yet, keep "publishFromCi": false
  4. complete the package bootstrap before merging any PR that changes a release-enabled new package

Bootstrap sequence for a new package:

  1. publish the package once from a trusted maintainer machine using normal npm auth
  2. open that package on npm and add the paperclipai/paperclip trusted publisher for .github/workflows/release.yml
  3. rerun or dry-run the release flow as needed to confirm CI publishing now works
  4. only then enable "publishFromCi": true

PR CI enforces this by checking changed release-enabled package manifests against npm. That keeps master canary publishing healthy while preserving the no-long-lived-token model for normal CI releases.

2.3. Verify trusted publishing before removing old auth

After the workflows are live:

  1. run a canary publish
  2. confirm npm publish succeeds without any NPM_TOKEN
  3. run a stable dry-run
  4. run one real stable publish

Only after that should you remove old token-based access.

3. Remove Legacy npm Tokens

After trusted publishing works:

  1. revoke any repository or organization NPM_TOKEN secrets used for publish
  2. revoke any personal automation token that used to publish Paperclip
  3. if npm offers a package-level setting to restrict publishing to trusted publishers, enable it

Goal:

  • no long-lived npm publishing token should remain in GitHub Actions

4. Create GitHub Environments

Create three environments in the GitHub repository:

  • npm-canary
  • npm-beta
  • npm-stable

Path:

  1. GitHub repository
  2. Settings
  3. Environments
  4. New environment

5. Configure npm-canary

Recommended settings for npm-canary:

  • environment name: npm-canary
  • required reviewers: none
  • wait timer: none
  • deployment branches and tags:
    • selected branches only
    • allow master

Reasoning:

  • every push to master should be able to publish a canary automatically
  • no human approval should be required for canaries

The scheduled nightly lane also publishes under npm-canary: it is the same trust level (fully automated, no human gate), its runs execute on master so the branch rule is satisfied, and reusing the environment means the nightly lane required no new environments and no npm trusted-publisher changes (publishing still happens from release.yml, see section 2.2).

5.1. Configure npm-beta

Recommended settings for npm-beta:

  • environment name: npm-beta
  • required reviewers: at least one maintainer
  • prevent self-review: enabled when your team size allows it
  • wait timer: none
  • deployment branches and tags:
    • selected branches only
    • allow master

Reasoning:

  • beta promotions are deliberate human decisions; the required reviewer on this environment is the promotion gate
  • create this environment before the first channel: beta dispatch. If the workflow runs first, GitHub auto-creates the environment with no protection rules, and that first beta would publish without approval

Like nightly, beta publishing lives in release.yml, so no npm trusted-publisher changes are needed (see section 2.2).

6. Configure npm-stable

Recommended settings for npm-stable:

  • environment name: npm-stable
  • required reviewers: at least one maintainer other than the person triggering the workflow when possible
  • prevent self-review: enabled
  • admin bypass: disabled if your team can tolerate it
  • wait timer: optional
  • deployment branches and tags:
    • selected branches only
    • allow master

Reasoning:

  • stable publishes should require an explicit human approval gate
  • the workflow is manual, but the environment should still be the real control point

7. Protect master

Open the branch protection settings for master.

Recommended rules:

  1. require pull requests before merging
  2. require status checks to pass before merging
  3. require review from code owners
  4. dismiss stale approvals when new commits are pushed
  5. restrict who can push directly to master

At minimum, make sure workflow and release script changes cannot land without review.

8. Enforce CODEOWNERS Review

This repo now includes .github/CODEOWNERS, but GitHub only enforces it if branch protection requires code owner reviews.

In branch protection for master, enable:

  • Require review from Code Owners

Then verify the owner entries are correct for your actual maintainer set.

Current file:

  • .github/CODEOWNERS

If @cryppadotta is not the right reviewer identity in the public repo, change it before enabling enforcement.

8.1. Let the Lockfile Bot Merge Lockfile Refreshes

.github/workflows/refresh-lockfile.yml regenerates pnpm-lock.yaml from the manifests on master and merges the result without CI or review. Contributors never commit the lockfile, so the bot is the only path for lockfile changes.

Resolution keeps locked versions, but it picks the newest matching version for an added or widened dependency. A release-age gate (.github/scripts/check-lockfile-release-age.mjs) therefore checks every package version that the refresh adds. The bot merges only when each one has been on npm for at least 3 days. If any version is newer, or the gate cannot verify it, the bot leaves a comment on the PR and does not merge. A maintainer can review and merge it, or the daily scheduled refresh merges it after the versions are old enough. A held run saves its lockfile, and the hash of the master lockfile it started from, as an artifact. The next run resolves from that lockfile only while master still has the same lockfile. Held versions therefore stay put while their manifests are unchanged, even when newer releases appear, and a lockfile change on master replaces them. The gate also holds any added entry whose resolution is not a plain npm registry tarball. Change the age with --min-age-days in the workflow.

The merge uses a dedicated GitHub App. Do not reuse commitperclip or bypass the built-in github-actions app. Those identities are available to other workflows, including release jobs that run dependency install scripts, so a bypass for them would let any of those workflows land code on master.

  1. Create an organization-owned GitHub App, for example paperclip-lockfile-bot:
    • Disable the webhook.
    • Repository permissions: Contents: Read and write, Pull requests: Read and write. Leave everything else at No access.
    • Allow installation only on this account.
  2. Install the app on paperclipai/paperclip only.
  3. Create a GitHub environment named lockfile-refresh. Under deployment branches and tags, allow only master. Add no required reviewers.
  4. In that environment, add:
    • variable LOCKFILE_BOT_CLIENT_ID: the app's client ID
    • secret LOCKFILE_BOT_PRIVATE_KEY: a private key generated for the app
  5. In the master ruleset, add the app as a bypass actor with bypass mode For pull requests only. The app can then merge PRs past required checks and code owner review, but it cannot push to master directly.

The workflow mints the app token after dependency resolution finishes and merges only the commit it pushed (--match-head-commit). A commit anyone else pushes to chore/refresh-lockfile makes the merge fail.

9. Protect Release Infrastructure Specifically

These files should always trigger code owner review:

  • .github/workflows/release.yml
  • scripts/release.sh
  • scripts/release-lib.sh
  • scripts/release-package-map.mjs
  • scripts/create-github-release.sh
  • scripts/rollback-latest.sh
  • doc/RELEASING.md
  • doc/PUBLISHING.md

If you want stronger controls, add a repository ruleset that explicitly blocks direct pushes to:

  • .github/workflows/**
  • scripts/release*

10. Do Not Store a Claude Token in GitHub Actions

Do not add a personal Claude or Anthropic token for automatic changelog generation.

Recommended policy:

  • stable changelog generation happens locally from a trusted maintainer machine
  • canaries never generate changelogs

This keeps LLM spending intentional and avoids a high-value token sitting in Actions.

11. Verify the Canary Workflow

After setup:

  1. merge a harmless commit to master
  2. open the Release workflow run triggered by that push
  3. confirm it passes verification
  4. confirm publish succeeds under the npm-canary environment
  5. confirm npm now shows a new canary release
  6. confirm a git tag named canary/vYYYY.MDD.P-canary.N was pushed

Install-path check:

npm install --prefix "$(mktemp -d)" paperclipai@canary --no-audit --no-fund

The release script runs this clean-prefix install after publishing every workspace package dependency-first and publishing paperclipai last. A package that is not yet registry-visible stops the train before the channel entrypoint can advance.

12. Verify the Stable Workflow

After at least one good canary exists:

  1. resolve the target stable version with ./scripts/release.sh stable --date YYYY-MM-DD --print-version
  2. prepare releases/vYYYY.MDD.P.md on the source commit you want to promote
  3. open Actions -> Release
  4. run it with:
    • source_ref: the tested commit SHA or canary tag source commit
    • stable_date: leave blank or set the intended UTC date like 2026-03-18 do not enter a version like 2026.318.0; the workflow computes that from the date
    • dry_run: true
  5. confirm the dry-run succeeds
  6. rerun with dry_run: false
  7. approve the npm-stable environment when prompted
  8. confirm npm latest points to the new stable version
  9. confirm git tag vYYYY.MDD.P exists
  10. confirm the GitHub Release was created

Implementation note:

  • the GitHub Actions stable workflow calls create-github-release.sh with PUBLISH_REMOTE=origin
  • local maintainer usage can still pass PUBLISH_REMOTE=public-gh explicitly when needed

13. Suggested Maintainer Policy

Use this policy going forward:

  • canaries are automatic and cheap
  • stables are manual and approved
  • only stables get public notes and announcements
  • release notes are committed before stable publish
  • rollback uses npm dist-tag, not unpublish

14. Troubleshooting

Trusted publishing fails with an auth error

Check:

  1. the workflow filename on GitHub exactly matches the filename configured in npm
  2. the package has the trusted publisher entry for the correct repository
  3. the job has id-token: write
  4. the job is running from the expected repository, not a fork

Stable workflow runs but never asks for approval

Check:

  1. the publish job uses environment npm-stable
  2. the environment actually has required reviewers configured
  3. the workflow is running in the canonical repository, not a fork

CODEOWNERS does not trigger

Check:

  1. .github/CODEOWNERS is on the default branch
  2. branch protection on master requires code owner review
  3. the owner identities in the file are valid reviewers with repository access

Runner verification dependency cache

release-verify.yml runs Verify Paperclip Runner on two independent runners. The protocol lane runs check:eval-kernel and check:protocol. The Rust lane runs check:runner and check:api-authority. Together they retain every check in check:all; both lanes must pass before Cloud source verification or readiness can succeed. A failed lane does not cancel the other lane.

Both lanes restore Cargo dependencies with the pinned Rust Cache action. The compiler comes from the Runner package's rust-toolchain.toml before the action computes its key. Compiler and Cargo metadata changes select a new cache. The release-runner-v2 shared key avoids separate copies for these lanes. Its suffix hashes the virtual workspace's runner/Cargo.toml and ancestor Cargo configuration. Rust Cache discovers member manifests through Cargo metadata, which omits this virtual manifest. Without the suffix, changing [profile.dev] can restore an exact but obsolete dependency cache on every run. GitHub caches are immutable, so the successful rebuild cannot replace that old entry. The profile/configuration hash also partitions fallback restores. Every reader and writer uses the same inputs, including the separate typecheck and cross-target caches. Only the Rust lane saves this cache. After verification it also runs build:rust to warm the debug dependencies used by the protocol lane; its own tests already warm release dependencies. The cache writer is shorter than the protocol lane.

GitHub matches a cache entry on its key and on a version hash of the absolute paths in the entry. The master writer runs on the RunsOn fleet, where the checkout is /home/runner/_work/paperclip/paperclip. The trusted PR workflow restores the same entry read-only on GitHub-hosted runners, where the checkout is /home/runner/work/paperclip/paperclip. A Pin the Runner Rust workspace path step in both workflows links $HOME/paperclip-runner-rust to the Runner crate and passes that path to the cache action, so both layouts hash the same paths and the PR lanes can restore master's entry. The guard tests under .github/scripts/tests/ require this step, with identical text, before every Rust cache step in both workflows.

Workspace crates and installed Cargo binaries are excluded from this entry. Every run runs all assigned checks, including on a cache hit. In release verification, only an own-repository master-push run verifying that push's exact SHA can restore the cache, and only a successful Rust lane saves it. The PR workflow restores master's cache read only. Tag and manual candidate release verification compile without this cache. A miss or eviction costs compilation time but does not change the checks. To discard old dependency caches, increment the shared-key version and let the next successful master verification warm it.

Installed JavaScript dependencies

setup-ci-dependencies can restore exact node_modules trees and separately certified shared/SDK build outputs. scripts/ci-dependency-cache.mjs hashes manifests, resolution, patches, install scripts, and the runtime/checkout layout. The root workspace-link hook and the server/Runner Copilot asset hooks are known postinstall commands. An exact dependency restore replays these hooks before validating workspace links and build outputs. Copilot defers installation in an unbuilt source checkout; its normal build installs and verifies the assets. Provider assets are not included in the dependency cache. Any unrecognized workspace lifecycle hook still disables materialized reuse. Only a frozen install from the canonical master push can publish the shared entries.

For CI cache changes, the profile-ci label runs the paired setup benchmark and exercises restored dependencies with the shared-package tests. The longer server test comparison runs when its measured scripts or fixtures change; cache-only changes do not require unchanged test commands to run faster. It also builds Rust units on one GitHub-hosted runner and restores the dependency and workspace caches on a second runner with a fresh checkout. Both restores must be exact, and Cargo must report every unit as fresh. These qualification caches are scoped to the PR and run; they cannot populate master's caches.

Runner release crate cache

The dependency entry leaves the Runner's own crate out, and a fresh checkout invalidates cargo's mtime fingerprints for workspace crates anyway, so every pull request build compiled paperclip-runner-core in release mode from scratch (28-49s per job on 2026-10-11) although most master commits leave its inputs untouched. A second, content-addressed entry holds only that crate's release artifacts: its fingerprints, the lib's rlib and rmeta, the paperclip-runnerd binary and their dep-info, about 70 MB. The path list and the key inputs live in scripts/runner-release-crate-cache.mjs, which both workflows call, and scripts/__tests__/runner-release-crate-cache.test.mjs holds the readers and the writer to them.

The key is runner-release-crate-v1-<scope>-<hashFiles>. The scope names the platform, the pinned compiler (rustc --version --verbose: release, commit and host) and a hash of the checkout root, because cargo's dep-info records the protocol files the crate includes by relative path as absolute paths. The hashFiles part covers every input the build reads: the toolchain pin, the manifests and lockfile, the crate sources, the protocol schemas and fixtures, and the three fixture trees the test modules include (two under the Runner package and tests/runner-e2e/fixtures at the repository root). Any change to any of them selects a new key. A guard test resolves every include_str! and include_bytes! in the crate, whether its argument is a literal or a concat! of literals, env!("CARGO_MANIFEST_DIR") and macro metavariables, and fails on an include that lands outside these patterns or uses a form it cannot resolve. Readers pass no restore-keys: a prefix match would hand cargo another revision's output.

The writer is the Rust lane of the same master-push verification, after its checks and the debug warm-up. It looks the key up first and, on a miss, runs cargo clean --release -p paperclip-runner-core and then the package's build:binary (the exact command the readers run) before saving, so the entry carries no test-profile variants. In the trusted PR workflow, the Typecheck, Build and Canary Dry Run jobs and the two Verify Paperclip Runner lanes that build the crate (rust and the final vitest shard) restore the entry read-only right after the dependency restore. On a hit, mark-current sets the mtime of every restored artifact to now, so cargo's freshness check sees every source as older than the build and keeps the artifacts. A restore that lacks any file cargo reads or checks for either unit (the fingerprint hash and dep-info of each unit, the lib's rlib and rmeta, the binary under deps; measured with cargo 1.97.1, which recompiles without any one of them and recreates the uplifted binary without any of the rest) is removed instead, the job log names the missing file, and cargo compiles as on a miss. pnpm build then prints Finished release profile in well under a second for that crate. On a miss nothing changes: cargo compiles the crate as before.

The trust boundary is unchanged: only master writes, a pull request can only restore master's entry, and it restores only artifacts built from inputs byte-identical to its own merge tree.

The trust boundary is the protected master branch, not the cache-key text. GitHub does not let master restore caches created by a child branch, sibling branch, tag, or PR merge ref. Both permitted restore scopes (current branch and default branch) are master here. A workflow with authority to execute arbitrary code on master can affect verification directly and is already trusted. The cache contains dependency build artifacts, not credentials or workspace output. See GitHub cache access restrictions.

Chat integration test shards

Release verification runs the large chat integration file on three independent runners. Five other server shards cover every remaining general server file. The ordinary local test command and trusted PR workflow keep their complete general-server group. Each chat case shuts down its services, pauses its own still-active endpoints, and retires its active/waiting conversations after assertions. This keeps workers in later cases from claiming earlier fixtures in the shared test database. Application assertions stay unchanged.

Each chat job collects active tests with Vitest, groups cases by source line, and balances those groups by case count. Parameterized cases and loop-generated cases on one line stay together. The job re-collects with the exact line filters it will execute and fails if the selected case identities differ. Hooks and test execution remain sequential inside each runner with its own temporary home.

Run one shard locally with:

pnpm test:run:general -- --group general-chat --shard-index 0 --shard-count 3

Use indexes 0, 1, and 2 to run the complete chat suite. The CLI validates that each shard has work and that collection includes usable source locations. A Vitest collection or filtering change fails verification instead of dropping tests. Splitting adds three release-verification jobs and repeats collection and fixture setup; it does not make a single test faster.

The file-duration manifest also records the native Codex Runner integration suite's measured import and execution cost, so the existing file balancer accounts for it in both ordinary PR and release verification.

Cloud readiness runner placement

When AWS routing is enabled, Cloud image builds use paperclip-cloud-build-x64 and source verification uses paperclip-post-merge-x64. The artifact wait and the Cloud source verified v1 and Cloud deployable v1 marker jobs run on GitHub-hosted runners. These small jobs must not hold or wait for capacity in the source-verification fleet. During a merge burst, even a completed build must wait for its marker before consumers can recognize readiness.

Runner placement does not change readiness requirements: exact-source artifacts, all source checks, and the image verification must still pass. The versioned markers and their dependency gates are unchanged.