Document BetterCodex icon verification

Author: advaitpaliwal

AGENTS.md

@@ -6,6 +6,7 @@
 - Derive selectors, layout, copy, and interaction boundaries from those source measurements, then record the evidence in `STATUS.md` when shipping the change.
 - Treat `/Applications/Codex.app` as the vendor-signed source app. Read or restore it for evidence, then ship BetterCodex mutations through `npm run desktop -- install` or `npm run desktop -- bundle` so the changed runtime lives in `/Applications/BetterCodex.app` or a disposable sibling bundle.
 - Patch the official Codex bundle only for an explicitly requested local experiment using `--unsafe-patch-official-app`, and report that this breaks the vendor signature/update path.
+- For BetterCodex app icon changes, verify the installed sibling app's visible icon path: `CFBundleIconFile`, legacy `icon.icns`/`electron.icns`/`app.icns`, app-level icon PNGs, Launch Services registration, Dock/cache refresh, and a relaunched `/Applications/BetterCodex.app`.
 
 ## Product Vocabulary