feat: synchronize tab titles with saved SQL file renaming (#2739)

- Bidirectional sync between SQL library and tab titles
- Case-insensitive .sql extension via shared ensureSqlExtension
- Revert tab title when rename persistence fails

Close #2648

Co-authored-by: Cursor <cursoragent@cursor.com>

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

@@ -16,6 +16,7 @@ import { useQueryStore } from "@/stores/queryStore";
 import { useSettingsStore } from "@/stores/settingsStore";
 import { focusSidebarRenameInput } from "@/lib/sidebar/sidebarRenameFocus";
 import { savedSqlFolderBranchFileCount } from "@/lib/savedSql/savedSqlFolderCounts";
+import { ensureSqlExtension, stripSqlExtension } from "@/lib/savedSql/savedSqlFileName";
 import type { SavedSqlFile, SavedSqlFolder } from "@/types/database";
 
 const { t } = useI18n();
@@ -73,18 +74,10 @@ function importConnectionIdForFolder(folder?: SavedSqlFolder) {
   return folder?.connectionId || activeImportConnectionId();
 }
 
-function ensureSqlExtension(name: string) {
-  return /\.sql$/i.test(name) ? name : `${name}.sql`;
-}
-
 function sanitizeFileSystemSegment(name: string) {
   return name.replace(/[<>:"/\\|?*\u0000-\u001F]/g, "_").trim() || "untitled";
 }
 
-function stripSqlExtension(name: string) {
-  return name.replace(/\.sql$/i, "");
-}
-
 function relativeImportName(baseDir: string, filePath: string) {
   const normalizedBase = baseDir.replace(/\\/g, "/").replace(/\/+$/, "");
   const normalizedFile = filePath.replace(/\\/g, "/");
@@ -596,7 +589,7 @@ async function confirmRename() {
   if (type === "folder") {
     await savedSqlStore.renameFolder(id, name);
   } else {
-    await savedSqlStore.renameFile(id, name.endsWith(".sql") ? name : `${name}.sql`);
+    await savedSqlStore.renameFile(id, ensureSqlExtension(name));
   }
 }