Lab #2741: PulledExtensionsLock timeout names the lock file with a forward slash on Windows; Windows CI fails on main

Description

The Windows Compatibility workflow on main has failed on every commit since the pulled-extensions lock landed (swamp-club#2709). Runs 36631831173, 36633249370, 36634874056 and 36636180979 all fail on one test:

PulledExtensionsLock.withLock: the timeout names the lock file and its holder (src/infrastructure/persistence/pulled_extensions_lock_test.ts:337)

AssertionError: Expected actual: "Another swamp process is changing this repository's pulled extensions: lock C:\Users\[REDACTED]\AppData\Local\Temp\swamp-pulled-lock-test-...\.swamp/pulled-extensions.lock held by runneradmin@runnervm99s1a (pid 9960) — timed out after 105ms. Retry once it finishes." to contain: "C:\Users\[REDACTED]\AppData\Local\Temp\swamp-pulled-lock-test-...\.swamp\pulled-extensions.lock".

The lock path in the LockTimeoutError message (lockPath, passed into the builder in src/infrastructure/persistence/pulled_extensions_lock.ts around line 296) joins the swamp dir and pulled-extensions.lock with a literal forward slash, while the test's lockFilePath() uses swampPath() (@std/path join), which produces a backslash on Windows.

Steps to reproduce

Run deno test src/infrastructure/persistence/pulled_extensions_lock_test.ts on Windows.

Expected

The error names the lock file with the platform's separator (build lockPath with @std/path join, as the repo conventions require), so the message users see on Windows is a valid path and the test passes.

Found while checking the post-merge Windows run for swamp-club#2515; unrelated to that change.

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datastore setup can overwrite an existing remote config tier when it moves an in-repo tier into an extension datastore

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Decorative animations outside the Lab still repaint on the main thread

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Codegen/DigitalOcean: create-only required fields block list/get/delete in generated DigitalOcean models

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End a collective's trial when it begins a paid subscription

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s3-datastore: SWAMP_S3_REQUEST_TIMEOUT_MS does not appear to apply to ListObjectsV2 during pull

s3-datastore: S3Lock.acquire overshoots maxWaitMs by up to a full backoff interval

s3-datastore: a model-scoped pull still lists, walks and indexes the whole namespace

Run the web dashboard locally from the CLI without swamp serve

verify-reviews: adversarial review path guard is a hand-kept list, so new extensions silently skip it

issue-lifecycle skill: prepare-to-ship documents a fast_forward method that does not exist

S3 datastore rejects valid cache paths as traversal on Windows

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Partial extension catalog saves delete rows for sources mounted from outside the repo

extensions: cold-path catalog rebuild skips sources whose type is not a string literal, dropping them for one process lifetime

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Workflow evaluation rejects another templating system's ${{ }} text, so the #2491 pass-through never reaches workflow steps

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worker prune: remote datastore keeps deleted worker records (no-path markDirty() skips deletions)

Orphaned data record survives a model type migration and is unreachable by data delete/versions/prune