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/wechat/miniprogram.go

@@ -419,8 +419,8 @@ func SendWithdrawSubscribeMessage(ctx context.Context, openID string, amount flo
 		"thing8":  object.HashMap{"value": thing8},
 	}
 	state := "formal"
-	if cfg != nil && cfg.Mode == "debug" {
-		state = "developer"
+	if cfg != nil && cfg.WechatMiniProgramState != "" {
+		state = cfg.WechatMiniProgramState
 	}
 	_, err := miniProgramApp.SubscribeMessage.Send(ctx, &subrequest.RequestSubscribeMessageSend{
 		ToUser:           openID,