Adopt root-level tsswift app layout

Move the app payload under swift/ while keeping git, package.json, and .smartconfig.json at the repo root. This standardizes the Swift app setup so build, test, run, and watch workflows match the other repos.

.github/workflows/ci.yml

@@ -11,11 +11,17 @@ jobs:
     steps:
       - uses: actions/checkout@v4
 
+      - name: Enable Corepack
+        run: corepack enable
+
+      - name: Install tooling dependencies
+        run: corepack pnpm install
+
       - name: Select Xcode
         run: sudo xcode-select -s /Applications/Xcode.app
 
       - name: Build macOS app
-        run: xcodebuild build -project "IDPGlobal.xcodeproj" -scheme "IDPGlobal" -destination "platform=macOS" CODE_SIGNING_ALLOWED=NO
+        run: corepack pnpm swift:build:macos
 
       - name: Run macOS tests
-        run: xcodebuild test -project "IDPGlobal.xcodeproj" -scheme "IDPGlobal" -destination "platform=macOS" CODE_SIGNING_ALLOWED=NO
+        run: corepack pnpm swift:test