Input validation

package.json

@@ -17,11 +17,13 @@
     "@fortawesome/free-solid-svg-icons": "^7.0.1",
     "@fortawesome/react-fontawesome": "^3.0.2",
     "@mistralai/mistralai": "^1.10.0",
+    "dompurify": "^3.2.7",
     "lucide-react": "^0.544.0",
     "next": "15.5.3",
     "react": "19.1.0",
     "react-dom": "19.1.0",
-    "supertest": "^7.1.4"
+    "supertest": "^7.1.4",
+    "zod": "^4.1.12"
   },
   "devDependencies": {
     "@eslint/eslintrc": "^3",

src/components/ui/chat/ChatInput.tsx

@@ -1,5 +1,6 @@
 import React, { useRef, useLayoutEffect } from "react";
 import { Mic, Plus } from "lucide-react";
+import DOMPurify from "dompurify";
 
 /**
  * Hook: auto-resize a textarea ref to its content.
@@ -37,6 +38,7 @@ export function ChatInput({
   const handleKeyDown = (e: React.KeyboardEvent<HTMLTextAreaElement>) => {
     if (e.key === "Enter" && !e.shiftKey) {
       e.preventDefault();
+      prompt = DOMPurify.sanitize(prompt);
       onSend();
     }
   };

src/components/ui/chat/Message.tsx

@@ -8,7 +8,7 @@ import { ChatMessage } from "@/lib/types";
 
 export function Message({ message }: { message: ChatMessage }) {
   const isUser = message.role === "user";
-  
+
   // State for translation
   const [translation, settranslation] = useState<string | null>(null);
   const [showTranslation, setShowTranslation] = useState(false);
@@ -122,6 +122,7 @@ export function Message({ message }: { message: ChatMessage }) {
     }
   };
 
+
   return (
     <div className={`group flex ${isUser ? "justify-end" : "justify-start"} ${isDeleted ? 'hidden' : ''}`}>
       {!isUser && (

src/lib/utils.ts

@@ -31,6 +31,6 @@ export async function fetchWithRetry(url: string, options: RequestInit, maxRetri
       }
     }
   }
-
-  throw new Error(`Failed after ${maxRetries} attempts: ${lastError?.message || 'Unknown error'}`);
+  
+  throw new Error(`Failed after ${maxRetries} attempts: ${lastError ? lastError.message : 'Unknown error'}`);
 }