The agent has no simulator and will still tell you it verified the fix. These rules turn that into an instruction for me instead. The native rebuild line saves the confusing half hour where your change simply is not in the app.
CLAUDE.md
Copied 4 times
## You cannot run this app
- You have no simulator. Never claim something works. Say what I should tap and what I should see.
- After a change, give me one line: the screen, the action, the expected result.
- Native code means a rebuild. If you touch `app.json`, a config plugin, or add a package with native code, say that Expo Go is not enough and I need a new development build.
- Never bump the Expo SDK or a native dependency without asking.
- If a fix is iOS-only, say so, and say what to check on Android.
AskVibe