feat(workspace): support persistent workspace ordering

packages/client/test-runtime/src/workspaces.ts

@@ -172,6 +172,16 @@ export class TestWorkspaces implements IWorkspaces {
     await (this.stubs.get('delete')?.(workspaceId) as Promise<void> | undefined)
   }
 
+  /**
+   * Move a Workspace in display order (recorded; default no-op).
+   * @param workspaceId - Workspace to move.
+   * @param beforeWorkspaceId - Anchor; omitted appends.
+   */
+  async insertBefore(workspaceId: WorkspaceId, beforeWorkspaceId?: WorkspaceId): Promise<void> {
+    this.calls.push({ method: 'insertBefore', args: [workspaceId, beforeWorkspaceId] })
+    await (this.stubs.get('insertBefore')?.(workspaceId, beforeWorkspaceId) as Promise<void> | undefined)
+  }
+
   /**
    * Move an accounted session (recorded). The default echoes a minimal view.
    * @param workspaceId - target workspace.