fix(runner): import resolved packages via file:// URLs on win32

[Chase J (chajac)]

Fixes WIZ-11313.

Problem

qawolf flows run on Windows fails with:

Could not load @qawolf/testkit ... Only URLs with a scheme in: file, data, and node are supported by the default ESM loader. On Windows, absolute paths must be valid file:// URLs. Received protocol 'c:'

The npm-installed CLI runs under Node, and import() treats its argument as a URL, not a filesystem path. POSIX paths happen to parse as URL paths, but a Windows path (C:\...) parses as URL protocol c:, which Node's ESM loader rejects. Four call sites passed raw resolveFromEnvDir()/join() paths to import(): the testkit loader (both imports — the reported failure), the Playwright loader, and the emails loader.

Fix

New src/shell/importFromPath.ts converts an absolute path to a file:// URL via pathToFileURL before importing; all four sites now use it. Same-module-instance semantics are unchanged on POSIX (Node keys its ESM cache by the resolved file:// URL, which is identical for both forms), so the shared-AsyncLocalStorage invariant holds.

Regression guard

The windows-smoke CI job gains a smoke that bundles the real src/shell/testkit.ts and drives configureTestkit under Node on win32 against a fixture @qawolf/testkit — red on the previous code (Received protocol 'c:'), green with the fix. Only Node-on-win32 rejects raw absolute-path specifiers, so only that job can catch a regression here.

Testing

• Full suite (1260 tests), lint, format, typecheck, knip pass
• Smoke passes under Node 24 on darwin; mechanism repro confirmed (import("C:\\temp\\x.js") throws ERR_UNSUPPORTED_ESM_URL_SCHEME on any platform)
• Verified working on a win 11 machine to launch and pass a web test

[coderabbitai]

🚥 Pre-merge checks | ✅ 4

✅ Passed checks (4 passed)

Check name	Status	Explanation
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Title check	✅ Passed	The title follows Conventional Commits, uses an allowed type and scope, stays under 72 characters, and clearly describes the Windows file URL import fix.
Description check	✅ Passed	The description clearly explains the problem, fix, regression coverage, and testing results, despite omitting the template headings and checklist.

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