Pairing & Mob on Mobile

## Pairing session - <feature>
- Driver: <name> (keyboard)
- Navigator: <name> (reads aloud, watches sim)
- Device: iPhone 16 sim + Pixel 8 API 35 emu
- Branch: feature/<ticket>
- Rotate: 25 min
- Done when: PR opened with screenshot + test output

# Shared verification before ending session
npm run lint && npm run typecheck && npm test
npx expo start --dev-client   # if native modules

# Driver - standard start
npx expo start --clear
 
# Navigator - verify on second platform without stopping Metro
# press a / i in shared terminal with driver consent

## Before session
- [ ] Same Node 20 + `npm ci` completed both machines
- [ ] Same git branch checked out
- [ ] Named simulators: iPhone 16, Pixel_8_API_35
- [ ] .env.local values confirmed (staging API)
 
## During session
- [ ] Redbox reproduced on both iOS and Android once for UI bugs
- [ ] Font scale 100% default; test XL if a11y ticket
- [ ] Dark mode toggled if theme-related
 
## After session
- [ ] PR description includes both platform screenshots
- [ ] No uncommitted `app.config.ts` experiments left on driver machine

## Device lab shelf - team norms
 
### Checkout
- Sign device out in #device-lab or sheet: name, date, ticket
- Note OS version sticker on cradle (iOS 18.2, Android 15)
 
### Hygiene
- Log out of personal Apple/Google accounts before return
- Clear app data for staging builds when testing auth flows
- Charge to 80%+ before check-in; cable stays with cradle
 
### Shared staging accounts
- Use team vault credentials - never personal 2FA-only accounts
- Rotate passwords quarterly; document in 1Password vault
 
### Broken / flaky devices
- Red tag "do not use" + Slack post - flaky hardware wastes mob hours

# iOS internal build install - buddy verifies UDID registered
eas device:create
eas build --profile preview --platform ios
 
# Android APK sideload
eas build --profile preview --platform android
# QR from EAS dashboard - both observe install success

Roles rotate each slice:
  Driver     - types
  Navigator  - strategy, reads tickets
  Researcher - docs, Sentry, Expo forums
  Device op  - physical device + screenshots (optional fifth)

## Mob rules (mobile)
- No parallel Metro on different branches mid-session
- Production EAS credentials: senior only, group observes
- Merge only after everyone saw green tests on stream

<!-- Request device evidence -->
Thanks - please add Android screenshot; iOS safe area looks correct.
 
<!-- Request preview build -->
This adds a config plugin - please trigger `needs-preview` and paste EAS link.
 
<!-- Approve with device note -->
Verified on iPhone 16 sim + Pixel 8 emu - LGTM.

## Release pairing checklist (45m)
- [ ] Confirm RC `build_id` matches QA sign-off sheet
- [ ] Driver shares EAS dashboard read-only; navigator reads steps aloud
- [ ] `eas submit` only after Maestro smoke green
- [ ] Rollback doc open: OTA roll-back + staged rollout pause links
- [ ] Post submit links in #releases thread