fix: prevent runner XCTest attachment bloat (#520)

Long-running AgentDeviceRunnerUITests sessions can inherit Xcode 26 screenRecording/deleteOnSuccess defaults and leave hidden testmanagerd attachments behind when sessions terminate outside a clean XCTest success path.

Pin an explicit AgentDeviceRunnerUITests.xctestplan with screenshots and keepNever attachment lifetimes, then normalize the generated per-session .xctestrun copy before test-without-building. The .xctestrun normalization protects stale cached artifacts and Xcode versions that ignore some test-plan attachment lifetime keys during build-for-testing.

This only affects XCTest's automatic attachments; user-requested agent-device recordings still use the existing record command paths.

Co-authored-by: Michał Pierzchała <thymikee@gmail.com>

Author: spilist

.fallowrc.json

@@ -22,7 +22,10 @@
     "website/docs/404.mdx",
     "website/rspress.config.ts"
   ],
-  "ignorePatterns": ["examples/test-app/**"],
+  "ignorePatterns": [
+    "examples/test-app/**",
+    "ios-runner/AgentDeviceRunner/AgentDeviceRunnerUITests.xctestplan"
+  ],
   "ignoreDependencies": ["@theme"],
   "ignoreExports": [
     {

ios-runner/AgentDeviceRunner/AgentDeviceRunner.xcodeproj/xcshareddata/xcschemes/AgentDeviceRunner.xcscheme

@@ -28,7 +28,13 @@
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
       shouldUseLaunchSchemeArgsEnv = "YES"
-      shouldAutocreateTestPlan = "YES">
+      shouldAutocreateTestPlan = "NO">
+      <TestPlans>
+         <TestPlanReference
+            reference = "container:AgentDeviceRunnerUITests.xctestplan"
+            default = "YES">
+         </TestPlanReference>
+      </TestPlans>
       <Testables>
          <TestableReference
             skipped = "NO"

ios-runner/AgentDeviceRunner/AgentDeviceRunnerUITests.xctestplan

@@ -0,0 +1,26 @@
+{
+  "configurations" : [
+    {
+      "id" : "916C7049-FE79-4C78-B55F-79242F92CB19",
+      "name" : "Configuration 1",
+      "options" : {
+
+      }
+    }
+  ],
+  "defaultOptions" : {
+    "preferredScreenCaptureFormat" : "screenshots",
+    "systemAttachmentLifetime" : "keepNever",
+    "userAttachmentLifetime" : "keepNever"
+  },
+  "testTargets" : [
+    {
+      "target" : {
+        "containerPath" : "container:AgentDeviceRunner.xcodeproj",
+        "identifier" : "20EA2EDC2F2CFC7C001CF0EF",
+        "name" : "AgentDeviceRunnerUITests"
+      }
+    }
+  ],
+  "version" : 1
+}