Run service-dialog adapter regression tests in CI

[rmcdaniel]

Problem

Commit df2e3386c19237ba484b2c2a988c2d83e1f657ab adds tests/Node/ServiceModeDialogVisualTest.mjs to protect the service-mode Waterline adapter’s stable-open wait, rejected-geometry retention, and fail-closed handling of an unsupported installed audit. No package script or GitHub Actions step invokes the Node test suite. The end-to-end service-mode smoke proves the current all-passing dialog matrix, but it does not exercise the failed-geometry path, so the diagnostic regression can return without failing CI until another responsive defect occurs.

Acceptance criteria

• Run the service-dialog Node regression test on pull requests and pushes to main after the installed Waterline package is available.
• Keep the test fail-closed when the installed audit source no longer matches the supported adapter contract.
• Prove the executed test covers the stable-open wait and retains measured geometry before rejecting a failed geometry audit.
• Preserve the existing fresh-and-repeat eight-case browser qualification.

Delete when

Delete this item when protected-branch CI visibly executes the Node regression test and fails if either stable-layout waiting or failed-geometry retention is removed.

[rmcdaniel]

Consolidated into #41; the full acceptance criteria are retained in that root issue.