feat: 智能分类建议 — 根据金额/备注/历史自动推荐分类

client/src/api/stats.ts

@@ -41,3 +41,14 @@ export function getCategoryStats(month?: string, type: string = 'expense', group
 export function getTrend(month?: string, type: string = 'expense', group_id?: number | null) {
   return request<TrendPoint[]>({ url: '/stats/trend', data: { month, type, group_id } })
 }
+
+/** 智能分类建议结果 */
+export interface CategorySuggestion {
+  category: { id: number; name: string; color: string } | null
+  confidence: number
+}
+
+/** 根据金额和备注推荐分类 */
+export function suggestCategory(amount: number, type: string, note?: string) {
+  return request<CategorySuggestion>({ url: '/stats/suggest-category', data: { amount, type, note } })
+}