Make the latest-API-level emulator E2E (api36DebugAndroidTest, the
highest level in the E2E matrix and its Gradle Managed Device task) an
actually-run, required step:
- CLAUDE.md: preflight now runs api36DebugAndroidTest, and a change is
not done until that E2E runs and passes locally (not merely compiles).
The full multi-API matrix and the API 37 preview job stay CI's job.
- preflight skill: add the api36 E2E as the final step, note the
emulator/managed-device precondition, and replace the old
"don't run E2E locally" guidance so the two files agree.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>