fix(app-management): use simctl --json instead of a shell pipe for simulator app list

[Mochxd]

Problem

Listing apps on an iOS simulator passes a shell pipe as spawn arguments:

exec('xcrun', ['simctl', 'listapps', udid, '|', 'plutil', '-convert', 'json', '-o', '-', '-'])

teen_process.exec spawns without a shell, so |, plutil and the rest are handed to simctl listapps as literal arguments instead of forming a pipeline. The simulator app list never gets converted to JSON, so appium_app_lifecycle action=list and name-based app resolution fail on local simulator sessions.

This regressed in #423, which converted the original child_process.exec shell string (xcrun simctl listapps "$udid" | plutil -convert json -o - -) into an argv array. The pipe was preserved as an argument.

Fix

Ask simctl for JSON directly with --json, which is what prepare-ios-simulator.ts already does when it reads the simulator app list:

https://github.com/appium/appium-mcp/blob/main/src/tools/ios/prepare-ios-simulator.ts#L180

This drops the plutil dependency entirely and keeps the two simulator code paths consistent.

Test

Added src/tests/tools/app-management/list-apps.test.ts covering the simulator branch:

• simctl is invoked as ['simctl', 'listapps', udid, '--json'], with no | or plutil argument
• the returned payload is normalized into package/app name pairs

[KazuCocoa]

We want to call the simctl via https://appium.github.io/appium-xcuitest-driver/12.3/reference/execute-methods/#mobile-simctl instead of direct simctl to make the same logic work on local/remote.

Let me do the update instead

[KazuCocoa]

Btw, did you succeed in getting JSON format with this...? My local didn't return valid JSON with the --json such as xcrun simctl listapps C874BE6A-7424-4493-AAFB-3BE54C3942AE --json (vanilla xcrun as well)

#487 instead which worked on my local

[KazuCocoa]

Let me merge #487 as the json format didn't work expectedly on my env even vanilla simctl command. It might have xcode version deps as well

[KazuCocoa]

thank you for the finding