fix(tests): make ios-app-resolution tests cross-platform for Linux CI

Replace PlistBuddy (macOS-only) with raw XML plist in create_fake_app
helper so .app directory search tests work on Linux CI. Skip
ios_extract_bundle_id tests on non-macOS since the function itself
requires PlistBuddy.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: abueide

plugins/tests/ios/test-app-resolution.sh

@@ -38,7 +38,16 @@ create_fake_app() {
   app_dir="$1"
   bundle_id="${2:-com.test.app}"
   mkdir -p "$app_dir"
-  /usr/libexec/PlistBuddy -c "Add :CFBundleIdentifier string $bundle_id" "$app_dir/Info.plist" 2>/dev/null || true
+  cat > "$app_dir/Info.plist" <<PLIST
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+  <key>CFBundleIdentifier</key>
+  <string>${bundle_id}</string>
+</dict>
+</plist>
+PLIST
 }
 
 echo "========================================"
@@ -171,19 +180,24 @@ assert_contains "$error_output" "No .app bundle found" "Error should mention no
 assert_contains "$error_output" "IOS_APP_ARTIFACT" "Error should mention env var"
 
 # ============================================================================
-# Tests: ios_extract_bundle_id
+# Tests: ios_extract_bundle_id (macOS only - uses PlistBuddy)
 # ============================================================================
 
-start_test "ios_extract_bundle_id - extracts from Info.plist"
-test_root="$TMPDIR_BASE/test_bundle"
-create_fake_app "$test_root/MyApp.app" "com.example.myapp"
-result=$(ios_extract_bundle_id "$test_root/MyApp.app" 2>/dev/null)
-assert_equal "com.example.myapp" "$result" "Should extract correct bundle ID"
-
-start_test "ios_extract_bundle_id - fails on missing Info.plist"
-test_root="$TMPDIR_BASE/test_bundle_missing"
-mkdir -p "$test_root/NoInfo.app"
-assert_failure "ios_extract_bundle_id '$test_root/NoInfo.app'" "Should fail without Info.plist"
+if [ -x /usr/libexec/PlistBuddy ]; then
+  start_test "ios_extract_bundle_id - extracts from Info.plist"
+  test_root="$TMPDIR_BASE/test_bundle"
+  create_fake_app "$test_root/MyApp.app" "com.example.myapp"
+  result=$(ios_extract_bundle_id "$test_root/MyApp.app" 2>/dev/null)
+  assert_equal "com.example.myapp" "$result" "Should extract correct bundle ID"
+
+  start_test "ios_extract_bundle_id - fails on missing Info.plist"
+  test_root="$TMPDIR_BASE/test_bundle_missing"
+  mkdir -p "$test_root/NoInfo.app"
+  assert_failure "ios_extract_bundle_id '$test_root/NoInfo.app'" "Should fail without Info.plist"
+else
+  echo ""
+  echo "SKIP: ios_extract_bundle_id tests (PlistBuddy not available on this platform)"
+fi
 
 # ============================================================================
 # Tests: ios_resolve_app_glob