add @user

src/components/browser.ts

@@ -13,6 +13,9 @@ export function renderHeader(currentHandle: string, isLoggedIn: boolean, userHan
         </svg>
       </button>`
 
+  // Use logged-in user's handle for input if available
+  const inputHandle = isLoggedIn && userHandle ? userHandle : currentHandle
+
   return `
     <div class="header">
       <form class="header-form" id="header-form">
@@ -21,7 +24,7 @@ export function renderHeader(currentHandle: string, isLoggedIn: boolean, userHan
           class="header-input"
           id="header-input"
           placeholder="handle (e.g., syui.ai)"
-          value="${currentHandle}"
+          value="${inputHandle}"
         >
         <button type="submit" class="header-btn at-btn" title="Browse">@</button>
         ${loginBtn}