diff --git a/apps/server/src/services/auto_name.ts b/apps/server/src/services/auto_name.ts
index 38831e9..d058e82 100644
--- a/apps/server/src/services/auto_name.ts
+++ b/apps/server/src/services/auto_name.ts
@@ -37,9 +37,11 @@ export async function maybeAutoNameChat(
   if ((counts[0]?.n ?? 0) < 1) return;
 
   const chatRows = await ctx.sql<
-    { id: string; name: string | null; session_id: string }[]
+    { id: string; name: string | null; session_id: string; model: string | null }[]
   >`
-    SELECT id, name, session_id FROM chats WHERE id = ${chatId}
+    SELECT c.id, c.name, c.session_id, s.model
+    FROM chats c JOIN sessions s ON s.id = c.session_id
+    WHERE c.id = ${chatId}
   `;
   const chat = chatRows[0];
   if (!chat) return;
@@ -67,6 +69,7 @@ export async function maybeAutoNameChat(
     user: namingInput,
     maxTokens: 30,
     temperature: 0.3,
+    fallbackModel: chat.model ?? undefined,
   });
   const name = cleanTitle(raw);
   if (!name) {
diff --git a/apps/web/src/hooks/useWorkspacePanes.ts b/apps/web/src/hooks/useWorkspacePanes.ts
index 101193f..14c01f5 100644
--- a/apps/web/src/hooks/useWorkspacePanes.ts
+++ b/apps/web/src/hooks/useWorkspacePanes.ts
@@ -391,6 +391,13 @@ export function useWorkspacePanes(sessionId: string): UseWorkspacePanesResult {
       const pane = next[paneIdx]!;
       const nextIds = pane.chatIds.filter((id) => id !== chatId);
       if (nextIds.length === 0) {
+        if (next.length > 1) {
+          // Last tab closed and other panes exist — remove the whole pane
+          // instead of leaving an orphaned empty panel.
+          const spliced = next.filter((_, i) => i !== paneIdx);
+          setActivePaneIdx((ai) => Math.min(ai, spliced.length - 1));
+          return spliced;
+        }
         next[paneIdx] = { ...pane, kind: 'empty', chatId: undefined, chatIds: [], activeChatIdx: -1 };
       } else {
         const nextActiveIdx = Math.min(pane.activeChatIdx, nextIds.length - 1);