chore(orbit): guard bulk queue operations

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/store/confirmModalStore.ts

@@ -0,0 +1,47 @@
+import { create } from 'zustand';
+
+let _resolve: ((accepted: boolean) => void) | null = null;
+
+interface ConfirmRequest {
+  title: string;
+  message: string;
+  confirmLabel: string;
+  cancelLabel?: string;
+  danger?: boolean;
+}
+
+interface ConfirmModalStore extends ConfirmRequest {
+  isOpen: boolean;
+  request: (req: ConfirmRequest) => Promise<boolean>;
+  confirm: () => void;
+  cancel: () => void;
+}
+
+export const useConfirmModalStore = create<ConfirmModalStore>(set => ({
+  isOpen: false,
+  title: '',
+  message: '',
+  confirmLabel: '',
+  cancelLabel: undefined,
+  danger: false,
+
+  request: (req) =>
+    new Promise<boolean>(resolve => {
+      // If a previous prompt is still pending, treat the old one as cancelled.
+      if (_resolve) _resolve(false);
+      _resolve = resolve;
+      set({ isOpen: true, ...req });
+    }),
+
+  confirm: () => {
+    _resolve?.(true);
+    _resolve = null;
+    set({ isOpen: false });
+  },
+
+  cancel: () => {
+    _resolve?.(false);
+    _resolve = null;
+    set({ isOpen: false });
+  },
+}));