[everettjf]

Stabilize release-gate tests without changing App or Web product behavior:

• Generate pending workspace edits through the existing session-scoped editor insertion command, instead of relying on WindowServer focus for execCommand. Preserve all four real SwiftUI host replacements. Hold edit/autosave messages and assert the file is unchanged before replacement, so the closing host must preserve its final pending-edit snapshot. Add focus/fixture-content timeout diagnostics.
• Wait for the aborted deletion confirmation to unmount before opening the retry confirmation. Injected IndexedDB failures can outrun its closing animation.
• Compare the complete persisted source across material preview settings, rather than CodeMirror’s virtualized visible DOM.
• Prepare real compiler-cache entries before three snapshot/storage/weather functional scenarios. In CI 40071198264, these scenarios hit the fixed five-second outer runtime deadline during cold compilation (imports were still compiling or the mock HTTP request had not started). Preparation never executes widget code or relaxes the compiler/runtime deadlines; all behavior assertions and dedicated timeout/cached-performance coverage remain. Focused Mac and iOS runs of the three scenarios passed.

Validation:

• Focused macOS workspace regression: five consecutive iterations passed.
• Local ./Scripts/release-readiness.sh: passed, including macOS/iOS app builds; macOS 703 passed / 0 failed / 32 skipped; iOS Simulator 709 passed / 0 failed / 31 skipped. iOS used a disposable iPhone 18 Pro / iOS 27.0 simulator via SCRIPTWIDGET_IOS_DESTINATION.
• Focused persistence and material browser smokes: passed.
• Complete Web gate after the final script adjustment: SCRIPTWIDGET_SKIP_XCODE=1 ./Scripts/release-readiness.sh passed.
• Latest full CI: https://github.com/everettjf/scriptwidget/actions/runs/40073855100 — passed on final head 6b8e01d1c9a802fa3ec2388e7b4a8a0fa3e22153. Cloud XCTest summaries: macOS 699 passed / 0 failed / 33 skipped; iPhone Simulator 705 passed / 0 failed / 32 skipped; iPad Simulator 705 passed / 0 failed / 32 skipped. Both Linux and Windows browser-matrix checks also passed.

Test-only change. No runtime, package, permissions, security boundaries, deployment targets or App Store release changes. Physical-device and signed iCloud acceptance were not performed for this patch; deterministic iCloud-state coverage is part of CI.

Deferred CI follow-up (outside this release closeout): cache compatible native build artifacts and provide a focused failed-test rerun path before another complete release gate. No workflow restructuring is included here.