Configure iPhone Git commit identity (#76)

AGENTS.md

@@ -45,3 +45,12 @@ cargo test --workspace
 
 For Apple project changes, also run `xcodegen generate` from `apple/` and build
 the affected simulator targets.
+
+### Simulator biometric validation
+
+Before testing biometric unlock, enable Biometric Unlock once in the iPhone
+app so its protected passphrase is enrolled. In Simulator, use **Features >
+Face ID > Enrolled**, trigger an IronStorage unlock, then choose **Matching
+Face**. Verify the app changes from locked to unlocked. Use **Non-matching
+Face** to test rejection, and clear **Enrolled** to test unavailable or changed
+biometric enrollment.