feat(editor): handle tabs after connection disconnect

apps/desktop/src/components/layout/AppSidebar.vue

@@ -153,7 +153,8 @@ async function confirmDeleteSelectedConnections() {
   try {
     await connectionStore.removeConnections(ids);
     for (const connectionId of ids) {
-      connectionStore.disconnect(connectionId).catch((error) => {
+      // 页签已由 removeConnections 按「删除连接」策略处理，这里只清会话。
+      connectionStore.disconnect(connectionId, { skipTabHandling: true }).catch((error) => {
         console.warn("[DBX][connection:delete:disconnect-failed]", { connectionId, error });
       });
     }

apps/desktop/src/components/layout/EditorGroupTabBar.vue

@@ -416,13 +416,14 @@ function tabTitleText(tab: QueryTab) {
 }
 
 function tabConnectionLabel(tab: QueryTab) {
-  return connectionStore.getConfig(tab.connectionId)?.name || tab.connectionId;
+  // 连接已删除但页签被保留时，回退到原连接名，避免显示成裸 uuid。
+  return connectionStore.getConfig(tab.connectionId)?.name || tab.detachedConnectionName || tab.connectionId;
 }
 
 function tabConnectionTargetLabel(tab: QueryTab) {
   const connection = connectionStore.getConfig(tab.connectionId);
   const host = connection?.host.trim();
-  return connection && host ? `${host}:${connection.port}` : tab.connectionId;
+  return connection && host ? `${host}:${connection.port}` : tab.detachedConnectionName || tab.connectionId;
 }
 
 function databaseTabGroupBaseLabel(tab: QueryTab) {