Add UI test covering layout + core flows

Verifies:
- Title lives in the top 25% of the screen (guards against letterboxing regressions)
- Plus button opens Add Connection sheet; Cancel dismisses
- Settings gear opens Settings sheet; Done dismisses
- Search field accepts input and keeps the top chrome visible
- Empty-state CTA routes to Add Connection

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Project.yml

@@ -43,3 +43,17 @@ targets:
         product: VNCCore
       - package: VNCUI
         product: VNCUI
+
+  ScreensUITests:
+    type: bundle.ui-testing
+    platform: iOS
+    deploymentTarget: "18.0"
+    sources:
+      - path: ScreensUITests
+    settings:
+      base:
+        PRODUCT_BUNDLE_IDENTIFIER: com.tt.screens.uitests
+        TEST_TARGET_NAME: Screens
+        GENERATE_INFOPLIST_FILE: YES
+    dependencies:
+      - target: Screens