- Update mobile/app.json: replace YOUR_EAS_PROJECT_ID placeholder with
the real EAS project ID (8455f39d-ef0d-4850-98e4-f79e388642c1)
- Update mobile/package.json: upgrade all dependencies to Expo SDK 54
compatible versions (react 19.1.0, react-native 0.81.5, expo ~54.0.0,
all expo-* packages, react-navigation v6 → v7, @types/react ~19.1.10)
- Update mobile/README.md: remove outdated eas init step, document that
the EAS project ID is already configured and explain when to update it
Co-authored-by: christianlouis <361235+christianlouis@users.noreply.github.com>