feat(renderer): add updater store mirroring main process state

src/renderer/lib/updater-store.ts

@@ -0,0 +1,42 @@
+import { create } from 'zustand';
+import { ipc } from '@/lib/ipc';
+
+type State = 'idle' | 'checking' | 'available' | 'downloading' | 'ready' | 'error';
+
+interface UpdaterState {
+  state: State;
+  version: string | null;
+  percent: number;
+  lastCheckAt: number;
+  applyStatus: (s: { state: State; version?: string; percent?: number; code?: string }) => void;
+  check: () => Promise<void>;
+  install: () => void;
+}
+
+const DEBOUNCE_MS = 60_000;
+
+export const useUpdaterStore = create<UpdaterState>((set, get) => ({
+  state: 'idle',
+  version: null,
+  percent: 0,
+  lastCheckAt: 0,
+  applyStatus: (s) =>
+    set({
+      state: s.state,
+      version: s.version ?? get().version,
+      percent: s.percent ?? get().percent,
+    }),
+  check: async () => {
+    if (Date.now() - get().lastCheckAt < DEBOUNCE_MS) return;
+    set({ lastCheckAt: Date.now() });
+    await ipc.updater.check();
+  },
+  install: () => ipc.updater.install(),
+}));
+
+// Subscribe to live updates from main
+if (typeof window !== 'undefined' && (window as any).electronAPI?.updater?.onStatus) {
+  (window as any).electronAPI.updater.onStatus((payload: any) => {
+    useUpdaterStore.getState().applyStatus(payload);
+  });
+}