Feat: UI error handling

src/frontend/src/components/content/HomeInput.tsx

@@ -126,19 +126,21 @@ const HomeInput: React.FC<HomeInputProps> = ({
                     errorDetail = error?.response?.data?.detail;
                 }
 
-                // Handle RAI validation errors with better UX
+                  // Handle RAI validation errors - just show description as toast
                 if (errorDetail?.error_type === 'RAI_VALIDATION_FAILED') {
-                    setRAIError(errorDetail);
+                    const description = errorDetail.description || 
+                                     "Your request contains content that doesn't meet our safety guidelines. Please try rephrasing.";
+                    showToast(description, "error");
                 } else {
                     // Handle other errors with toast messages
                     const errorMessage = errorDetail?.description ||
                         errorDetail?.message ||
                         error?.response?.data?.message ||
                         error?.message ||
-                        "Something went wrong";
+                        "Something went wrong. Please try again.";
+
                     showToast(errorMessage, "error");
                 }
-
             } finally {
                 setInput("");
                 setSubmitting(false);
@@ -195,7 +197,7 @@ const HomeInput: React.FC<HomeInputProps> = ({
                     </div>
 
                     {/* Show RAI error if present */}
-                    {raiError && (
+                    {/* {raiError && (
                         <RAIErrorCard
                             error={raiError}
                             onRetry={() => {
@@ -206,7 +208,7 @@ const HomeInput: React.FC<HomeInputProps> = ({
                             }}
                             onDismiss={() => setRAIError(null)}
                         />
-                    )}
+                    )} */}
 
                     <ChatInput
                         ref={textareaRef} // forwarding

src/frontend/src/index.css

@@ -6,6 +6,25 @@ body, html, :root {
 }
 
 
+/* Hide raw JSON errors  */
+body > div[style*="position: fixed"]:contains('"error_type"'),
+body > div[style*="bottom: 0"]:contains('RAI_VALIDATION_FAILED'),
+pre:contains('"message":'),
+.error-raw,
+.json-error {
+  display: none !important;
+}
+
+/* Hide any pre-formatted JSON that might contain error messages */
+pre {
+  white-space: pre-wrap;
+}
+
+pre:has-text('error_type'),
+pre:has-text('RAI_VALIDATION_FAILED') {
+  display: none !important;
+}
+
 /* Global Custom Scrollbar */
 ::-webkit-scrollbar {
     overflow-y: auto; /* Ensure scrollable content */

src/frontend/src/services/TaskService.tsx

@@ -199,15 +199,27 @@ export class TaskService {
       return await apiService.createPlan(inputTask);
     } catch (error: any) {
       // You can customize this logic as needed
-      let message = "Failed to create plan.";
+      let message = "Unable to create plan. Please try again.";
       if (error?.response?.data?.detail) {
-        message = error.response.data.detail;
+        const detail = error.response.data.detail;
+        if (typeof detail === 'string' && detail.includes('RAI_VALIDATION_FAILED')) {
+          message = "Your request contains content that doesn't meet our safety guidelines. Please rephrase and try again.";
+        } else if (detail.includes('quota') || detail.includes('limit')) {
+          message = "Service is currently at capacity. Please try again in a few minutes.";
+        } else if (detail.includes('unauthorized') || detail.includes('forbidden')) {
+          message = "You don't have permission to create plans. Please contact your administrator.";
+        } else {
+          message = detail;
+        }
       } else if (error?.response?.data?.message) {
         message = error.response.data.message;
       } else if (error?.message) {
-        message = error.message;
+        if (error.message.includes('Network Error') || error.message.includes('fetch')) {
+          message = "Network error. Please check your connection and try again.";
+        } else {
+          message = error.message;
+        }
       }
-      // Throw a new error with a user-friendly message
       throw new Error(message);
     }
   }

src/frontend/src/utils/errorUtils.tsx

@@ -8,21 +8,31 @@ export const getErrorMessage = (error: unknown): string => {
         // Check error message patterns for different types of errors
         const message = error.message.toLowerCase();
 
-        if (message.includes('400') || message.includes('bad request')) {
-            return `Bad request: ${error.message}`;
+          if (message.includes('400') || message.includes('bad request')) {
+            return 'Invalid request. Please check your input and try again.';
         } else if (message.includes('401') || message.includes('unauthorized')) {
             return 'You are not authorized to perform this action. Please sign in again.';
         } else if (message.includes('404') || message.includes('not found')) {
-            return `Resource not found: ${error.message}`;
+            return 'The requested resource was not found.';
+        } else if (message.includes('429') || message.includes('too many requests')) {
+            return 'Too many requests. Please wait a moment and try again.';
         } else if (message.includes('500') || message.includes('server error')) {
-            return `Server error: ${error.message}. Please try again later.`;
+            return 'A server error occurred. Please try again later.';
         } else if (message.includes('network') || message.includes('fetch')) {
             return 'Network error. Please check your connection and try again.';
+        } else if (message.includes('timeout')) {
+            return 'Request timed out. Please try again.';
+        } else if (message.includes('quota') || message.includes('limit')) {
+            return 'Service limit reached. Please try again later.';
         }
 
-        return error.message;
+        // Return original message if it's already user-friendly (doesn't contain technical terms)
+        if (!message.includes('exception') && !message.includes('stack') && 
+            !message.includes('undefined') && !message.includes('null')) {
+            return error.message;
+        }
     }
-    return 'An unknown error occurred. Please try again.';
+    return 'An unexpected error occurred. Please try again.';
 };
 
 /**