visionOS: host app + native XCUITests (re-enable UITests in AllTests)

[schatt]

Summary

SixLayerFrameworkUITests_visionOS currently excludes all *UITests.swift / XCUITestHelpers.swift and has no TestApp / TEST_TARGET_NAME. Under #382 hygiene it was omitted from SLF-visionOS-AllTests (and remains omitted from SLF-visionOS-Framework) so an empty xctrunner is not mistaken for UI coverage — same class of gate as #353 (tvOS) and #354 (watchOS).

This issue tracks the positive work: real visionOS UI coverage — including an itemized triage of what iOS UITests imply we still owe on visionOS.

Goal

1. Add a visionOS XCUI host app (or equivalent) suitable for SixLayer UI tests.
2. Triage the candidate list below: for each file, port a visionOS-native observation, cover at unit layer if sufficient, mark N/A (with docs+code checks), or split to a narrower child issue.
3. Add visionOS-native XCUITests (not iOS-touch .tap() ports) for observations that cheaper layers cannot cover — especially what ViewInspector would have covered on iOS/macOS where VI is N/A on visionOS.
4. Re-add SixLayerFrameworkUITests_visionOS to SLF-visionOS-AllTests only when the suite is non-empty and installable.
5. Update epic Run Full Test Suite for Every Platform #233 matrix UI cell for visionOS from GAP to evidenced PASS (or linked partial).

Candidate inventory (iOS UITest sources excluded on visionOS today)

These are the files excluded by project.yml for SixLayerFrameworkUITests_visionOS. Not every file must become a 1:1 port — triage each observation.

• AccessibilityCompatibilityUITests.swift
• AccessibilityIdentifierCategoryAGlobalOffUITests.swift
• AccessibilityIdentifierCategoryAUITests.swift
• AccessibilityIdentifierCategoryEUITests.swift
• CallbackCategoryCUITests.swift
• FieldLayout385UITests.swift
• IntelligentDetailViewCategoryBUITests.swift
• Layer1AccessibilityUITests.swift
• Layer2AccessibilityUITests.swift
• Layer3AccessibilityUITests.swift
• Layer4UITests.swift
• Layer5UITests.swift
• Layer6UITests.swift
• ManualAccessibilityIdentifierHarnessUITests.swift
• OCRCategoryDUITests.swift
• PlatformAdvancedContainersAccessibilityUITests.swift
• PlatformStandaloneDropIn150UITests.swift
• PlatformToolbarAccessibilityUITests.swift
• SixLayerUITestNavigatorConsumerSmokeUITests.swift
• SixLayerUITestNavigatorUITests.swift
• XCUITestHelpers.swift

Out of scope

• First-class product/API expansion on visionOS → epic Epic: First-class visionOS support #378
• Eliminating tautological expects → Eliminate tautological Bool(true)/Bool(false) test expects #382 (already omitted the empty runner)
• Fake greens / empty runner membership

Related

• Epic Run Full Test Suite for Every Platform #233 (matrix; visionOS UI GAP)
• Epic Epic: First-class visionOS support #378 (first-class visionOS product)
• Eliminate tautological Bool(true)/Bool(false) test expects #382 (honesty sweep; omit empty visionOS UITests)
• Parallels: [Epic #233] tvOS SLF-tvOS-AllTests: UITest runner FrontBoard / install failure #353 / [Epic #233] watchOS SLF-watchOS-AllTests: simulator bootstrap failure (esp. 27.0) #354 (empty-runner omit); tvOS/watch native XCUI tracking: see sibling issues filed with the same inventory

[schatt]

Opened from #382 after omitting empty SixLayerFrameworkUITests_visionOS from AllTests (stale “ViewInspector Swift 6” rationale removed). This issue owns the real UI coverage work so the gap is not silent.

[schatt]

Process: Keep this inventory synchronized with project.yml excludes. Any new exclude (or re-include) of a listed file updates this checklist in the same batch — check off when ported, covered cheaper, or N/A; add rows when newly excluded.