fix(sidebar): handle double-click on saved SQL files

- Add missing 'open-saved-sql' action handler in onDoubleClick
- Add openSavedSqlFile() function to open saved SQL files
- Fixes issue where double-clicking saved SQL files did nothing
  when sidebarActivation is set to 'double' mode

Fixes #1636

apps/desktop/src/components/sidebar/TreeItem.vue

@@ -776,6 +776,8 @@ function onDoubleClick() {
     openData();
   } else if (action === "open-source") {
     void viewObjectSource();
+  } else if (action === "open-saved-sql") {
+    openSavedSqlFile();
   } else if (action === "toggle" && props.node.type === "mongo-collection") {
     openMongoCollectionData(props.node);
   } else if (action === "toggle") {
@@ -790,6 +792,16 @@ function openMongoCollectionData(node: TreeNode) {
   queryStore.updateSql(tab, node.label);
 }
 
+function openSavedSqlFile() {
+  const node = props.node;
+  if (node.type !== "saved-sql-file" || !node.savedSqlId) return;
+  const file = savedSqlStore.getFile(node.savedSqlId);
+  if (!file) return;
+  queryStore.openSavedSql(file);
+  connectionStore.activeConnectionId = file.connectionId;
+  void savedSqlStore.recordFileUsage(file.id);
+}
+
 async function openObjectBrowser() {
   const node = props.node;
   if (!node.connectionId) return;