feat(feedback): 反馈工单接入审核采纳/拒绝 + 历史反馈 (#16)

对接后端 approve/reject 接口,admin 反馈工单从单一「处理」改为审核双动作:
- FeedbackHandleDrawer: Segmented 采纳/拒绝 —— 采纳(发金币 1~10000 + 采纳备注)、
  拒绝(填用户端可见原因 + 内部备注);抽屉内联展示该用户历史反馈辅助审核
- 列表页: 状态筛选改 审核中/已采纳/未采纳、新增「审核结果」列、操作改 审核/查看,移除旧批量标记
- types.ts: Feedback 字段对齐后端(reject_reason/reward_coins/review_note/reviewed_by_admin_id/reviewed_at)

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: zzhyyyyy <2685922758@qq.com>
Reviewed-on: #16
Co-authored-by: zhuzihao <zhuzihao@wonderable.ai>
Co-committed-by: zhuzihao <zhuzihao@wonderable.ai>

src/lib/types.ts

@@ -206,7 +206,13 @@ export interface Feedback {
   content: string;
   contact: string;
   images: string[] | null;
-  status: string; // new / handled
+  // pending(审核中) / adopted(已采纳) / rejected(未采纳)；历史数据可能为 new
+  status: string;
+  reject_reason: string | null; // 未采纳原因(用户端可见)
+  reward_coins: number | null; // 采纳后发放金币
+  review_note: string | null; // 审核批注(采纳要点 / 内部备注)
+  reviewed_by_admin_id: number | null;
+  reviewed_at: string | null;
   created_at: string;
 }