feat: 添加 AI 分类功能，支持交易自动分类与标签生成

src/types/transaction.d.ts

@@ -6,4 +6,11 @@ export interface Transaction {
   date: string;
   note?: string;
   syncStatus: 'pending' | 'synced' | 'error';
+  aiCategory?: string;
+  aiTags?: string[];
+  aiConfidence?: number;
+  aiReason?: string;
+  aiStatus?: 'idle' | 'applied' | 'suggested' | 'failed';
+  aiModel?: string;
+  aiNormalizedMerchant?: string;
 }