refactor(android): unify invoke error parsing

apps/android/app/src/test/java/ai/openclaw/android/gateway/InvokeErrorParserTest.kt

@@ -0,0 +1,33 @@
+package ai.openclaw.android.gateway
+
+import org.junit.Assert.assertEquals
+import org.junit.Assert.assertFalse
+import org.junit.Assert.assertTrue
+import org.junit.Test
+
+class InvokeErrorParserTest {
+  @Test
+  fun parseInvokeErrorMessage_parsesUppercaseCodePrefix() {
+    val parsed = parseInvokeErrorMessage("CAMERA_PERMISSION_REQUIRED: grant Camera permission")
+    assertEquals("CAMERA_PERMISSION_REQUIRED", parsed.code)
+    assertEquals("grant Camera permission", parsed.message)
+    assertTrue(parsed.hadExplicitCode)
+    assertEquals("CAMERA_PERMISSION_REQUIRED: grant Camera permission", parsed.prefixedMessage)
+  }
+
+  @Test
+  fun parseInvokeErrorMessage_rejectsNonCanonicalCodePrefix() {
+    val parsed = parseInvokeErrorMessage("IllegalStateException: boom")
+    assertEquals("UNAVAILABLE", parsed.code)
+    assertEquals("IllegalStateException: boom", parsed.message)
+    assertFalse(parsed.hadExplicitCode)
+  }
+
+  @Test
+  fun parseInvokeErrorFromThrowable_usesFallbackWhenMessageMissing() {
+    val parsed = parseInvokeErrorFromThrowable(IllegalStateException(), fallbackMessage = "fallback")
+    assertEquals("UNAVAILABLE", parsed.code)
+    assertEquals("fallback", parsed.message)
+    assertFalse(parsed.hadExplicitCode)
+  }
+}