[Xget7]

Summary

The rotation fix's wait-then-give-up decision moves out of VulkanSurface into a class with no Vulkan or Android types.

 presentation/
+├── SurfaceSizeWait.h      # window size, stale count -> wait / rebuild / giveUp
 └── VulkanSurface.cpp      # asks it, does the Vulkan calls and the logging

rebuildWhenSurfaceReportsWindowSize
  reported = vkGetPhysicalDeviceSurfaceCapabilitiesKHR   # empty when the query fails
  switch sizeWait_.check(reported)
    wait    -> return
    rebuild -> LOGI, rebuildOrDrop
    giveUp  -> LOGW, rebuildOrDrop, sizeWait_.adopt(swapchain size)

Behaviour and log lines are as in #45, kMaxStaleChecks is still 60.
CI compiles and runs the test on the host, in the same build job step pattern as WorldFrameCompletionTest.

Evidence

• Before: the decision had no test.
  With the class stubbed, SurfaceSizeWaitTest fails: Assertion failed: (wait.pending(kPortrait)) ... line 19.
  After: it exits 0.

convergesAtOnce:      window L, caps L                  -> rebuild
waitsThenRebuilds:    caps P x10 then L                 -> wait x10, rebuild
failedQueryIsStale:   no caps, then L                   -> wait, rebuild
givesUp:              caps P x60 -> wait, 61st          -> giveUp; adopt(P) -> not pending
lastWaitingFrame:     caps P x59, then L                -> rebuild
restartsAfterGiveUp / matchResetsCount / newResizeResetsCount

• Where it ran: the Mac only. The decision logic runs on the host; no physical device was attached, so the real rotation on a phone has not been re-checked.
• Checks: scripts/lint-cpp.sh clean (includes the arm64 splatkit_android_tests link); ANDROID-SPIRV hashes equal the baseline; Gradle :splatkit:assembleRelease :app:assembleRelease :splatkit:testDebugUnitTest succeeds; host WorldFrameCompletionTest and SurfaceSizeWaitTest exit 0. The new CI step "Check surface size wait on host" runs in the build job.

Merge Danger

Door: Two-way.

Blast Radius: Android

A mistake would show as a stuck or wrongly sized swapchain after rotating a phone, which is the check to repeat on the Mi 9.