chore(test): run Windows auto-update e2e tests via Parallels VM on macOS

[mmaietta]

Extends the blackbox updater test suite so that NSIS/Windows tests can run directly from a macOS host using an existing Parallels Windows VM, without needing a native Windows runner.

• Searches for an available Parallels Windows VM at module load via getWindowsVm() IIFE; if found, Windows build/install/update steps are routed through it
• Writes a temporary update config to ~/ (mapped as \\Mac\Home\ in the VM — always shared) rather than system temp (\\Mac\Host\private\var\folders\... which requires "All Disks" sharing)
• Serves the NSIS installer over HTTP from the macOS host so the VM can download it without relying on slow UNC file reads for large binaries. Includes SHA-256 integrity verification of the downloaded installer before execution

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Latest commit: ff23c39

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[Copilot]

Pull request overview

This PR extends the updater blackbox E2E test harness to support running Windows/NSIS auto-update flows from a macOS host by delegating install/launch steps into a Parallels Windows VM, and adjusts the test fixture app/logging to be more VM/headless-friendly.

Changes:

• Add Parallels VM discovery + VM-aware install/launch paths for NSIS tests, plus HTTP-based delivery and SHA-256 verification for large installers.
• Update local HTTP server helper to support binding to non-loopback interfaces and add a helper to detect the Parallels host IP.
• Adjust the test fixture app to run headlessly (no window) during auto-update and to emit logs in a way that can be captured reliably.

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 7 comments.

Show a summary per file

File	Description
test/src/windows/winReseditTest.ts	Switch import to app-builder-lib/out/... for resource editing helper.
test/src/updater/blackboxUpdateTest.ts	Add VM routing, HTTP installer delivery + hashing, VM config placement, and longer polling for NSIS update completion.
test/src/rebuilderTest.ts	Switch exists import to builder-util/out/....
test/src/helpers/launchAppCrossPlatform.ts	Add Parallels host IP detection, allow server bind address override, and add VM-based execution path.
test/snapshots/globTest.js.snap	Update snapshot offsets/sizes due to fixture output changes.
test/fixtures/test-app/app/index.js	Make updater test app headless-friendly and adjust logging/error handling for reliable stdout capture.

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