fix: TypeScript build errors

src/pages/GamePage.tsx

@@ -2,7 +2,6 @@ import { useState, useEffect, useRef } from "react";
 import {
   useParams,
   Link,
-  useNavigate,
   useSearchParams,
 } from "react-router-dom";
 import ReactMarkdown from "react-markdown";
@@ -103,7 +102,6 @@ function detectLocation(messages: ChatMessage[]): string {
 export default function GamePage() {
   const { id } = useParams<{ id: string }>();
   const [searchParams] = useSearchParams();
-  const navigate = useNavigate();
   const { isAuthenticated } = useAuth();
   const [story, setStory] = useState<Story | null>(null);
   const [session, setSession] = useState<GameSession | null>(null);
@@ -372,11 +370,6 @@ export default function GamePage() {
     }
   };
 
-  const handleQuickAction = (action: string) => {
-    setInput(action);
-    inputRef.current?.focus();
-  };
-
   if (isInitialLoading) {
     return (
       <div className="game-page">