fix(example): patch @expo/plist null-proto crash breaking iOS device install

[LeslieOA]

Problem

npm run mobile:ios:run:device crashed at the install step:

TypeError: Cannot convert object to primitive value
    at LockdowndClient.startSession (@expo/cli .../LockdowndClient.ts:119)

The app built fine every time — only the device install failed, so expo run:ios --device never completed.

Root cause

@expo/plist 0.5.4 builds parsed plist objects with Object.create(null) (null prototype):

0.5.4:  new_obj = Object.create(null);   // no toString → crashes on coercion
0.5.3:  new_obj = {};                    // works

@expo/cli's lockdownd handshake does debug(\startSession: ${pairRecord}`). The ${pairRecord}` template coercion of a null-prototype object throws "Cannot convert object to primitive value", aborting before install.

Confirmed it is not an @expo/cli regression — LockdowndClient.js is byte-identical between 55.0.30 and 55.0.32. Other local projects work only because they resolved @expo/plist 0.5.3. Not iOS-version-related, not device-related, not our code.

Why patch-package (not overrides)

npm overrides can't fix it here: @expo/cli pins @expo/plist to an exact 0.5.4 and npm refuses to override the nested copy (verified across many attempts, including nested-path override syntax + full lockfile regen — the latter also drifted 78 unrelated deps incl. worklets, breaking the native build). patch-package edits the resolved file directly and replays on every install, version-pin-agnostic.

The fix

• patches/@expo+plist+0.5.4.patch — one line: Object.create(null) → {}
• patch-package devDep + postinstall hook → auto-applies on every install / fresh clone

CNG-safe

This is JS tooling only — it runs on the dev's Mac during expo run:ios's install step. It does not touch Pods, ios/, or anything Expo CNG manages. We never pod install. ✅

Verification

• npm ci from clean → postinstall reports @expo/plist@0.5.4 ✔
• npm run mobile:ios:run:device → Build Succeeded → Installing → app launches on device (previously crashed pre-install)
• worklets stays at 0.7.2 (no dependency drift, native build intact)

Cleanup later

Remove once @expo/plist restores Object.prototype or @expo/cli stops string-coercing the pair record.

🤖 Generated with Claude Code