docs(qa): capture terminal title loading states

README.md

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+# Terminal title loading QA
+
+Linux Chromium with an isolated real daemon. Before the change, reloading a manually renamed terminal produced ["Terminal", "My named terminal"]. Afterward the same journey produced ["", "My named terminal"], with the empty text occupied by the existing loading skeleton. First workspace visit and warm switching passed too.
+
+Screenshots show the changed app during loading and after loading. Real metadata responses were held briefly only for these screenshots. The failing-before/passing-after regression and separate renamed/OSC-title QA used normal response timing.
+
+No Windows, macOS, Electron, or native mobile runtime coverage is claimed. This does not establish a fix for issue #4521.

before-after.json

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+{
+  "before": {
+    "reload-tab-text": [
+      "Terminal",
+      "My named terminal"
+    ]
+  },
+  "after": {
+    "reload-tab-text": [
+      "",
+      "My named terminal"
+    ],
+    "first-visit-tab-text": [
+      "",
+      "My named terminal"
+    ],
+    "return-visit-tab-text": [
+      "",
+      "My named terminal"
+    ]
+  }
+}