新增技术文档，详细描述了项目的技术栈、配置、鉴权与安全、数据层等内容。同时，更新小程序页面以支持收益数据的加载与刷新功能，优化用户体验。新增收益接口以返回用户的累计收益和可提现金额，并调整相关逻辑以确保数据准确性。

soul-api/internal/handler/withdraw.go

@@ -326,7 +326,7 @@ func WithdrawPendingConfirm(c *gin.Context) {
 }
 
 // WithdrawConfirmReceived POST /api/miniprogram/withdraw/confirm-received 用户确认收款（记录已点击确认）
-// body: { "withdrawalId": "xxx", "userId": "xxx" }，仅本人可操作，更新 user_confirmed_at
+// body: { "withdrawalId": "xxx", "userId": "xxx" }，仅本人可操作；更新 user_confirmed_at 并将状态置为 success，该条不再出现在待确认收款列表
 func WithdrawConfirmReceived(c *gin.Context) {
 	var req struct {
 		WithdrawalID string `json:"withdrawalId" binding:"required"`
@@ -346,7 +346,7 @@ func WithdrawConfirmReceived(c *gin.Context) {
 	if w.Status != nil {
 		st = *w.Status
 	}
-	// 仅处理中或已成功的可标记「用户已确认收款」
+	// 仅处理中或待确认的可标记「用户已确认收款」
 	if st != "processing" && st != "pending_confirm" && st != "success" {
 		c.JSON(http.StatusOK, gin.H{"success": false, "message": "当前状态不可确认收款"})
 		return
@@ -356,7 +356,9 @@ func WithdrawConfirmReceived(c *gin.Context) {
 		return
 	}
 	now := time.Now()
-	if err := db.Model(&w).Update("user_confirmed_at", now).Error; err != nil {
+	// 更新为已确认收款，并将状态置为 success，待确认列表只含 processing/pending_confirm，故该条会从列表中移除
+	up := map[string]interface{}{"user_confirmed_at": now, "status": "success"}
+	if err := db.Model(&w).Updates(up).Error; err != nil {
 		c.JSON(http.StatusOK, gin.H{"success": false, "message": "更新失败"})
 		return
 	}