Android: fix incomplete JS string escaping in A2UI action status (#43784)

* Android: fix incomplete JS string escaping in A2UI action status

* escape U+2028/U+2029 Unicode line terminators in JS strings

* refactor(android): serialize A2UI action status strings

* fix: serialize Android A2UI action status strings (#43784) (thanks @Kaneki-x)

---------

Co-authored-by: Ayaan Zaidi <hi@obviy.us>

apps/android/app/src/main/java/ai/openclaw/app/protocol/OpenClawCanvasA2UIAction.kt

@@ -58,9 +58,12 @@ object OpenClawCanvasA2UIAction {
   }
 
   fun jsDispatchA2UIActionStatus(actionId: String, ok: Boolean, error: String?): String {
-    val err = (error ?: "").replace("\\", "\\\\").replace("\"", "\\\"")
+    val err = jsonStringLiteral(error ?: "")
     val okLiteral = if (ok) "true" else "false"
-    val idEscaped = actionId.replace("\\", "\\\\").replace("\"", "\\\"")
-    return "window.dispatchEvent(new CustomEvent('openclaw:a2ui-action-status', { detail: { id: \"${idEscaped}\", ok: ${okLiteral}, error: \"${err}\" } }));"
+    val idLiteral = jsonStringLiteral(actionId)
+    return "window.dispatchEvent(new CustomEvent('openclaw:a2ui-action-status', { detail: { id: ${idLiteral}, ok: ${okLiteral}, error: ${err} } }));"
   }
+
+  private fun jsonStringLiteral(raw: String): String =
+    JsonPrimitive(raw).toString().replace("\u2028", "\\u2028").replace("\u2029", "\\u2029")
 }

apps/android/app/src/test/java/ai/openclaw/app/protocol/OpenClawCanvasA2UIActionTest.kt

@@ -46,4 +46,18 @@ class OpenClawCanvasA2UIActionTest {
       js,
     )
   }
+
+  @Test
+  fun jsDispatchA2uiStatusQuotesControlCharacters() {
+    val js =
+      OpenClawCanvasA2UIAction.jsDispatchA2UIActionStatus(
+        actionId = "a1\n\u2028\"",
+        ok = false,
+        error = "parse failed\n\t\u2029\\",
+      )
+    assertEquals(
+      "window.dispatchEvent(new CustomEvent('openclaw:a2ui-action-status', { detail: { id: \"a1\\n\\u2028\\\"\", ok: false, error: \"parse failed\\n\\t\\u2029\\\\\" } }));",
+      js,
+    )
+  }
 }