macOS engine version watch

[github-actions]

Automated by engine-version-watch. Last checked 2026-07-02T08:33:13Z.

• Upstream engine versions: 2025.06.24 2026.06.09
• Production (Alpha): 2025.06.24 - macOS dropdown stable: 2025.06.24
• macOS builds present: 2025.06.24 2026.06.08

New versions needing a macOS build

• 2026.06.09 has no macos-2026.06.09 branch. Onboard with the back-port recipe:
  1. git worktree add wt -b macos-2026.06.09 2026.06.09
  2. cherry-pick the macOS layer from the newest macos-<version> branch, resolving conflicts (keep the tag's sim untouched)
  3. write 2026.06.09 into PINNED_VERSION; push macos-2026.06.09
  4. dispatch macos-build-gpu.yml (engine_branch=macos-2026.06.09, engine_version=2026.06.09) -> publishes engine-macos-arm64-2026.06.09
  5. determinism-test before adding/promoting its dropdown entry