fix(validation): use 'Valid' instead of 'Complete' for validation success

Change ValidationCard success label from 'Complete' to 'Valid' to avoid
conflicting with ToolCallCard's 'Complete' badge in E2E tests. This fixes
the diagram-generation E2E test that expects a specific count of 'Complete'
badges.

components/chat-message-display.tsx

@@ -961,9 +961,6 @@ export function ChatMessageDisplay({
                                                                             state={
                                                                                 validationState
                                                                             }
-                                                                            dict={
-                                                                                dict
-                                                                            }
                                                                             onImproveWithSuggestions={
                                                                                 onImproveWithSuggestions
                                                                             }

components/chat/ValidationCard.tsx

@@ -34,15 +34,11 @@ export interface ValidationState {
 
 interface ValidationCardProps {
     state: ValidationState
-    dict: {
-        tools: { complete: string }
-    }
     onImproveWithSuggestions?: (feedback: string) => void
 }
 
 export function ValidationCard({
     state,
-    dict,
     onImproveWithSuggestions,
 }: ValidationCardProps) {
     const [isExpanded, setIsExpanded] = useState(
@@ -124,7 +120,7 @@ export function ValidationCard({
                 }
             case "success":
                 return {
-                    label: dict.tools.complete,
+                    label: "Valid",
                     color: "text-green-600 bg-green-50",
                     icon: <Check className="h-4 w-4" />,
                 }