Add low/full CLI error verbosity mode for cleaner UI (#20399)

packages/cli/src/ui/hooks/useGeminiStream.ts

@@ -107,6 +107,11 @@ enum StreamProcessingStatus {
   Error,
 }
 
+const SUPPRESSED_TOOL_ERRORS_NOTE =
+  'Some internal tool attempts failed before this final error. Press F12 for diagnostics, or set ui.errorVerbosity to full for full details.';
+const LOW_VERBOSITY_FAILURE_NOTE =
+  'This request failed. Press F12 for diagnostics, or set ui.errorVerbosity to full for full details.';
+
 function isShellToolData(data: unknown): data is ShellToolData {
   if (typeof data !== 'object' || data === null) {
     return false;
@@ -202,6 +207,10 @@ export const useGeminiStream = (
   const [retryStatus, setRetryStatus] = useState<RetryAttemptPayload | null>(
     null,
   );
+  const isLowErrorVerbosity = settings.merged.ui?.errorVerbosity !== 'full';
+  const suppressedToolErrorCountRef = useRef(0);
+  const suppressedToolErrorNoteShownRef = useRef(false);
+  const lowVerbosityFailureNoteShownRef = useRef(false);
   const abortControllerRef = useRef<AbortController | null>(null);
   const turnCancelledRef = useRef(false);
   const activeQueryIdRef = useRef<string | null>(null);
@@ -559,6 +568,51 @@ export const useGeminiStream = (
     }
   }, [isResponding]);
 
+  const maybeAddSuppressedToolErrorNote = useCallback(
+    (userMessageTimestamp?: number) => {
+      if (!isLowErrorVerbosity) {
+        return;
+      }
+      if (suppressedToolErrorCountRef.current === 0) {
+        return;
+      }
+      if (suppressedToolErrorNoteShownRef.current) {
+        return;
+      }
+
+      addItem(
+        {
+          type: MessageType.INFO,
+          text: SUPPRESSED_TOOL_ERRORS_NOTE,
+        },
+        userMessageTimestamp,
+      );
+      suppressedToolErrorNoteShownRef.current = true;
+    },
+    [addItem, isLowErrorVerbosity],
+  );
+
+  const maybeAddLowVerbosityFailureNote = useCallback(
+    (userMessageTimestamp?: number) => {
+      if (!isLowErrorVerbosity || config.getDebugMode()) {
+        return;
+      }
+      if (lowVerbosityFailureNoteShownRef.current) {
+        return;
+      }
+
+      addItem(
+        {
+          type: MessageType.INFO,
+          text: LOW_VERBOSITY_FAILURE_NOTE,
+        },
+        userMessageTimestamp,
+      );
+      lowVerbosityFailureNoteShownRef.current = true;
+    },
+    [addItem, config, isLowErrorVerbosity],
+  );
+
   const cancelOngoingRequest = useCallback(() => {
     if (
       streamingState !== StreamingState.Responding &&
@@ -908,6 +962,7 @@ export const useGeminiStream = (
         addItem(pendingHistoryItemRef.current, userMessageTimestamp);
         setPendingHistoryItem(null);
       }
+      maybeAddSuppressedToolErrorNote(userMessageTimestamp);
       addItem(
         {
           type: MessageType.ERROR,
@@ -921,9 +976,18 @@ export const useGeminiStream = (
         },
         userMessageTimestamp,
       );
+      maybeAddLowVerbosityFailureNote(userMessageTimestamp);
       setThought(null); // Reset thought when there's an error
     },
-    [addItem, pendingHistoryItemRef, setPendingHistoryItem, config, setThought],
+    [
+      addItem,
+      pendingHistoryItemRef,
+      setPendingHistoryItem,
+      config,
+      setThought,
+      maybeAddSuppressedToolErrorNote,
+      maybeAddLowVerbosityFailureNote,
+    ],
   );
 
   const handleCitationEvent = useCallback(
@@ -1086,6 +1150,7 @@ export const useGeminiStream = (
         },
         userMessageTimestamp,
       );
+      maybeAddLowVerbosityFailureNote(userMessageTimestamp);
       if (contextCleared) {
         addItem(
           {
@@ -1097,7 +1162,13 @@ export const useGeminiStream = (
       }
       setIsResponding(false);
     },
-    [addItem, pendingHistoryItemRef, setPendingHistoryItem, setIsResponding],
+    [
+      addItem,
+      pendingHistoryItemRef,
+      setPendingHistoryItem,
+      setIsResponding,
+      maybeAddLowVerbosityFailureNote,
+    ],
   );
 
   const handleAgentExecutionBlockedEvent = useCallback(
@@ -1118,6 +1189,7 @@ export const useGeminiStream = (
         },
         userMessageTimestamp,
       );
+      maybeAddLowVerbosityFailureNote(userMessageTimestamp);
       if (contextCleared) {
         addItem(
           {
@@ -1128,7 +1200,12 @@ export const useGeminiStream = (
         );
       }
     },
-    [addItem, pendingHistoryItemRef, setPendingHistoryItem],
+    [
+      addItem,
+      pendingHistoryItemRef,
+      setPendingHistoryItem,
+      maybeAddLowVerbosityFailureNote,
+    ],
   );
 
   const processGeminiStreamEvents = useCallback(
@@ -1286,6 +1363,9 @@ export const useGeminiStream = (
           if (!options?.isContinuation) {
             setModelSwitchedFromQuotaError(false);
             config.setQuotaErrorOccurred(false);
+            suppressedToolErrorCountRef.current = 0;
+            suppressedToolErrorNoteShownRef.current = false;
+            lowVerbosityFailureNoteShownRef.current = false;
           }
 
           abortControllerRef.current = new AbortController();
@@ -1402,6 +1482,7 @@ export const useGeminiStream = (
               ) {
                 // Error was handled by validation dialog, don't display again
               } else if (!isNodeError(error) || error.name !== 'AbortError') {
+                maybeAddSuppressedToolErrorNote(userMessageTimestamp);
                 addItem(
                   {
                     type: MessageType.ERROR,
@@ -1415,6 +1496,7 @@ export const useGeminiStream = (
                   },
                   userMessageTimestamp,
                 );
+                maybeAddLowVerbosityFailureNote(userMessageTimestamp);
               }
             } finally {
               if (activeQueryIdRef.current === queryId) {
@@ -1439,6 +1521,8 @@ export const useGeminiStream = (
       startNewPrompt,
       getPromptCount,
       setThought,
+      maybeAddSuppressedToolErrorNote,
+      maybeAddLowVerbosityFailureNote,
     ],
   );
 
@@ -1587,6 +1671,13 @@ export const useGeminiStream = (
         (t) => !t.request.isClientInitiated,
       );
 
+      if (isLowErrorVerbosity) {
+        // Low-mode suppression applies only to model-initiated tool failures.
+        suppressedToolErrorCountRef.current += geminiTools.filter(
+          (tc) => tc.status === CoreToolCallStatus.Error,
+        ).length;
+      }
+
       if (geminiTools.length === 0) {
         return;
       }
@@ -1597,10 +1688,12 @@ export const useGeminiStream = (
       );
 
       if (stopExecutionTool && stopExecutionTool.response.error) {
+        maybeAddSuppressedToolErrorNote();
         addItem({
           type: MessageType.INFO,
           text: `Agent execution stopped: ${stopExecutionTool.response.error.message}`,
         });
+        maybeAddLowVerbosityFailureNote();
         setIsResponding(false);
 
         const callIdsToMarkAsSubmitted = geminiTools.map(
@@ -1706,6 +1799,9 @@ export const useGeminiStream = (
       registerBackgroundShell,
       consumeUserHint,
       config,
+      isLowErrorVerbosity,
+      maybeAddSuppressedToolErrorNote,
+      maybeAddLowVerbosityFailureNote,
     ],
   );