fix: make card comment refresh failures non-fatal

app/src/main/java/space/hackenslacker/kanbn4droid/app/carddetail/CardDetailRepository.kt

@@ -19,6 +19,7 @@ class CardDetailRepository(
     companion object {
         const val MISSING_SESSION_MESSAGE = "Missing session. Please sign in again."
         private const val SESSION_EXPIRED_MESSAGE = "Session expired. Please sign in again."
+        private val AUTH_STATUS_CODE_REGEX = Regex("\\b(401|403)\\b")
     }
 
     sealed interface Result<out T> {
@@ -206,7 +207,11 @@ class CardDetailRepository(
             is BoardsApiResult.Failure -> return mapFailure(addCommentResult.message)
         }
 
-        return listActivities(normalizedCardId)
+        return when (val refreshResult = listActivities(normalizedCardId)) {
+            is Result.Success -> refreshResult
+            is Result.Failure.SessionExpired -> refreshResult
+            is Result.Failure.Generic -> Result.Success(emptyList())
+        }
     }
 
     private suspend fun session(): Result<SessionSnapshot> {
@@ -231,11 +236,18 @@ class CardDetailRepository(
 
     private fun isAuthFailure(message: String): Boolean {
         val lower = message.lowercase()
-        return lower.contains("authentication failed") ||
-            lower.contains("server error: 401") ||
-            lower.contains("server error: 403") ||
-            lower.contains(" 401") ||
-            lower.contains(" 403")
+        val hasAuthToken =
+            lower.contains("authentication failed") ||
+                lower.contains("unauthorized") ||
+                lower.contains("forbidden")
+        val hasAuthStatusCode = AUTH_STATUS_CODE_REGEX.containsMatchIn(lower) &&
+            (
+                lower.contains("server error") ||
+                    lower.contains("http") ||
+                    lower.contains("status") ||
+                    lower.contains("code")
+                )
+        return hasAuthToken || hasAuthStatusCode
     }
 
     private data class SessionSnapshot(

app/src/test/java/space/hackenslacker/kanbn4droid/app/carddetail/CardDetailRepositoryTest.kt

@@ -120,6 +120,36 @@ class CardDetailRepositoryTest {
         assertEquals("hello", apiClient.lastComment)
     }
 
+    @Test
+    fun addComment_refreshGenericFailure_returnsSuccessWithEmptyActivities() = runTest {
+        val apiClient = FakeCardDetailApiClient().apply {
+            addCommentResult = BoardsApiResult.Success(Unit)
+            listActivitiesResult = BoardsApiResult.Failure("Server temporarily unavailable")
+        }
+        val repository = createRepository(apiClient = apiClient)
+
+        val result = repository.addComment(cardId = "card-1", comment = "hello")
+
+        assertTrue(result is CardDetailRepository.Result.Success)
+        val activities = (result as CardDetailRepository.Result.Success<List<CardActivity>>).value
+        assertTrue(activities.isEmpty())
+        assertEquals(1, apiClient.addCommentCalls)
+        assertEquals(1, apiClient.listActivitiesCalls)
+    }
+
+    @Test
+    fun addComment_refreshAuthFailure_mapsToSessionExpired() = runTest {
+        val apiClient = FakeCardDetailApiClient().apply {
+            addCommentResult = BoardsApiResult.Success(Unit)
+            listActivitiesResult = BoardsApiResult.Failure("Server error: 403")
+        }
+        val repository = createRepository(apiClient = apiClient)
+
+        val result = repository.addComment(cardId = "card-1", comment = "hello")
+
+        assertTrue(result is CardDetailRepository.Result.Failure.SessionExpired)
+    }
+
     @Test
     fun addComment_authFailureMapsToSessionExpired() = runTest {
         val apiClient = FakeCardDetailApiClient().apply {
@@ -132,6 +162,31 @@ class CardDetailRepositoryTest {
         assertTrue(result is CardDetailRepository.Result.Failure.SessionExpired)
     }
 
+    @Test
+    fun listActivities_nonAuthNumericMessage_remainsGenericFailure() = runTest {
+        val apiClient = FakeCardDetailApiClient().apply {
+            listActivitiesResult = BoardsApiResult.Failure("Server error: 1401")
+        }
+        val repository = createRepository(apiClient = apiClient)
+
+        val result = repository.listActivities("card-1")
+
+        assertTrue(result is CardDetailRepository.Result.Failure.Generic)
+        assertEquals("Server error: 1401", (result as CardDetailRepository.Result.Failure.Generic).message)
+    }
+
+    @Test
+    fun listActivities_forbiddenMessage_mapsToSessionExpired() = runTest {
+        val apiClient = FakeCardDetailApiClient().apply {
+            listActivitiesResult = BoardsApiResult.Failure("Forbidden")
+        }
+        val repository = createRepository(apiClient = apiClient)
+
+        val result = repository.listActivities("card-1")
+
+        assertTrue(result is CardDetailRepository.Result.Failure.SessionExpired)
+    }
+
     @Test
     fun updateDueDate_dateOnlyInputNormalizesToUtcMidnightPayloadContract() = runTest {
         val apiClient = FakeCardDetailApiClient()