Initial frontend repository commit.

Include app source and update .gitignore to exclude local release artifacts and signing files.

Made-with: Cursor

src/stores/cacheBus.ts

@@ -0,0 +1,52 @@
+export type CacheEventType =
+  | 'list_updated'
+  | 'detail_updated'
+  | 'cache_state_updated'
+  | 'error';
+
+export interface CacheEvent<TPayload = any> {
+  type: CacheEventType;
+  payload: TPayload;
+  timestamp: number;
+}
+
+export type CacheSubscriber<TEvent extends CacheEvent = CacheEvent> = (event: TEvent) => void;
+
+/**
+ * 统一缓存总线基座：
+ * - 单一订阅入口
+ * - 统一事件通知
+ * - 新订阅立即收到快照
+ */
+export abstract class CacheBus<TSnapshot, TEvent extends CacheEvent = CacheEvent> {
+  private subscribers = new Set<CacheSubscriber<TEvent>>();
+
+  protected abstract getSnapshot(): TSnapshot;
+
+  protected notify(event: TEvent): void {
+    this.subscribers.forEach((subscriber) => {
+      try {
+        subscriber(event);
+      } catch (error) {
+        console.error('[CacheBus] subscriber error:', error);
+      }
+    });
+  }
+
+  subscribe(subscriber: CacheSubscriber<TEvent>): () => void {
+    this.subscribers.add(subscriber);
+    this.emitInitialSnapshot(subscriber);
+    return () => {
+      this.subscribers.delete(subscriber);
+    };
+  }
+
+  protected emitInitialSnapshot(subscriber: CacheSubscriber<TEvent>): void {
+    subscriber({
+      type: 'cache_state_updated',
+      payload: this.getSnapshot(),
+      timestamp: Date.now(),
+    } as TEvent);
+  }
+}
+