fix: loadSessions variable shadowing bug

- Local variable 'sessions' was shadowing the ref 'sessions'
- sessions.value = sessions was not updating the ref
- Renamed local variable to 'sessionList' and properly assign to sessions.value
- This fixes sessions not appearing in history list after save

src/views/SearchView.vue

@@ -765,7 +765,9 @@ async function saveCurrentSession() {
   
   // Show rename dialog for session name
   if (currentSession.value) {
-    renamingSession.value = currentSession.value
+    // Ensure we're working with the session from the list
+    const sessionFromList = sessionList.value.find(s => s.id === currentSession.value!.id)
+    renamingSession.value = sessionFromList || currentSession.value
     renameValue.value = currentSession.value.title === '未命名' ? '' : currentSession.value.title
     nextTick(() => renameInputEl.value?.focus())
   }