refactor: 一次性佣金配置从套餐级别提升到系列级别

主要变更:
- 新增 tb_shop_series_allocation 表，存储系列级别的一次性佣金配置
- ShopPackageAllocation 移除 one_time_commission_amount 字段
- PackageSeries 新增 enable_one_time_commission 字段控制是否启用一次性佣金
- 新增 /api/admin/shop-series-allocations CRUD 接口
- 佣金计算逻辑改为从 ShopSeriesAllocation 获取一次性佣金金额
- 删除废弃的 ShopSeriesOneTimeCommissionTier 模型
- OpenAPI Tag '系列分配' 和 '单套餐分配' 合并为 '套餐分配'

迁移脚本:
- 000042: 重构佣金套餐模型
- 000043: 简化佣金分配
- 000044: 一次性佣金分配重构
- 000045: PackageSeries 添加 enable_one_time_commission 字段

测试:
- 新增验收测试 (shop_series_allocation, commission_calculation)
- 新增流程测试 (one_time_commission_chain)
- 删除过时的单元测试（已被验收测试覆盖）

internal/model/device.go

@@ -1,6 +1,8 @@
 package model
 
 import (
+	"encoding/json"
+	"strconv"
 	"time"
 
 	"gorm.io/gorm"
@@ -11,26 +13,126 @@ import (
 // 通过 shop_id 区分所有权：NULL=平台库存，有值=店铺所有
 type Device struct {
 	gorm.Model
-	BaseModel               `gorm:"embedded"`
-	DeviceNo                string     `gorm:"column:device_no;type:varchar(100);uniqueIndex:idx_device_no,where:deleted_at IS NULL;not null;comment:设备编号(唯一标识)" json:"device_no"`
-	DeviceName              string     `gorm:"column:device_name;type:varchar(255);comment:设备名称" json:"device_name"`
-	DeviceModel             string     `gorm:"column:device_model;type:varchar(100);comment:设备型号" json:"device_model"`
-	DeviceType              string     `gorm:"column:device_type;type:varchar(50);comment:设备类型" json:"device_type"`
-	MaxSimSlots             int        `gorm:"column:max_sim_slots;type:int;default:4;comment:最大插槽数量(默认4)" json:"max_sim_slots"`
-	Manufacturer            string     `gorm:"column:manufacturer;type:varchar(255);comment:制造商" json:"manufacturer"`
-	BatchNo                 string     `gorm:"column:batch_no;type:varchar(100);comment:批次号" json:"batch_no"`
-	ShopID                  *uint      `gorm:"column:shop_id;index;comment:店铺ID(NULL=平台库存,有值=店铺所有)" json:"shop_id,omitempty"`
-	Status                  int        `gorm:"column:status;type:int;default:1;not null;comment:状态 1-在库 2-已分销 3-已激活 4-已停用" json:"status"`
-	ActivatedAt             *time.Time `gorm:"column:activated_at;comment:激活时间" json:"activated_at"`
-	DeviceUsername          string     `gorm:"column:device_username;type:varchar(100);comment:设备登录用户名" json:"device_username"`
-	DevicePasswordEncrypted string     `gorm:"column:device_password_encrypted;type:varchar(255);comment:设备登录密码(加密)" json:"device_password_encrypted"`
-	DeviceAPIEndpoint       string     `gorm:"column:device_api_endpoint;type:varchar(500);comment:设备API端点" json:"device_api_endpoint"`
-	SeriesID                *uint      `gorm:"column:series_id;index;comment:套餐系列ID(关联PackageSeries)" json:"series_id,omitempty"`
-	FirstCommissionPaid     bool       `gorm:"column:first_commission_paid;type:boolean;default:false;comment:一次性佣金是否已发放" json:"first_commission_paid"`
-	AccumulatedRecharge     int64      `gorm:"column:accumulated_recharge;type:bigint;default:0;comment:累计充值金额(分)" json:"accumulated_recharge"`
+	BaseModel                          `gorm:"embedded"`
+	DeviceNo                           string     `gorm:"column:device_no;type:varchar(100);uniqueIndex:idx_device_no,where:deleted_at IS NULL;not null;comment:设备编号(唯一标识)" json:"device_no"`
+	DeviceName                         string     `gorm:"column:device_name;type:varchar(255);comment:设备名称" json:"device_name"`
+	DeviceModel                        string     `gorm:"column:device_model;type:varchar(100);comment:设备型号" json:"device_model"`
+	DeviceType                         string     `gorm:"column:device_type;type:varchar(50);comment:设备类型" json:"device_type"`
+	MaxSimSlots                        int        `gorm:"column:max_sim_slots;type:int;default:4;comment:最大插槽数量(默认4)" json:"max_sim_slots"`
+	Manufacturer                       string     `gorm:"column:manufacturer;type:varchar(255);comment:制造商" json:"manufacturer"`
+	BatchNo                            string     `gorm:"column:batch_no;type:varchar(100);comment:批次号" json:"batch_no"`
+	ShopID                             *uint      `gorm:"column:shop_id;index;comment:店铺ID(NULL=平台库存,有值=店铺所有)" json:"shop_id,omitempty"`
+	Status                             int        `gorm:"column:status;type:int;default:1;not null;comment:状态 1-在库 2-已分销 3-已激活 4-已停用" json:"status"`
+	ActivatedAt                        *time.Time `gorm:"column:activated_at;comment:激活时间" json:"activated_at"`
+	DeviceUsername                     string     `gorm:"column:device_username;type:varchar(100);comment:设备登录用户名" json:"device_username"`
+	DevicePasswordEncrypted            string     `gorm:"column:device_password_encrypted;type:varchar(255);comment:设备登录密码(加密)" json:"device_password_encrypted"`
+	DeviceAPIEndpoint                  string     `gorm:"column:device_api_endpoint;type:varchar(500);comment:设备API端点" json:"device_api_endpoint"`
+	SeriesID                           *uint      `gorm:"column:series_id;index;comment:套餐系列ID(关联PackageSeries)" json:"series_id,omitempty"`
+	FirstCommissionPaid                bool       `gorm:"column:first_commission_paid;type:boolean;default:false;comment:一次性佣金是否已发放(废弃,使用按系列追踪)" json:"first_commission_paid"`
+	AccumulatedRecharge                int64      `gorm:"column:accumulated_recharge;type:bigint;default:0;comment:累计充值金额(分,废弃,使用按系列追踪)" json:"accumulated_recharge"`
+	AccumulatedRechargeBySeriesJSON    string     `gorm:"column:accumulated_recharge_by_series;type:jsonb;default:'{}';comment:按套餐系列追踪的累计充值金额" json:"-"`
+	FirstRechargeTriggeredBySeriesJSON string     `gorm:"column:first_recharge_triggered_by_series;type:jsonb;default:'{}';comment:按套餐系列追踪的首充触发状态" json:"-"`
 }
 
 // TableName 指定表名
 func (Device) TableName() string {
 	return "tb_device"
 }
+
+func (d *Device) GetAccumulatedRechargeBySeriesMap() (map[uint]int64, error) {
+	result := make(map[uint]int64)
+	if d.AccumulatedRechargeBySeriesJSON == "" || d.AccumulatedRechargeBySeriesJSON == "{}" {
+		return result, nil
+	}
+	var raw map[string]int64
+	if err := json.Unmarshal([]byte(d.AccumulatedRechargeBySeriesJSON), &raw); err != nil {
+		return nil, err
+	}
+	for k, v := range raw {
+		id, err := strconv.ParseUint(k, 10, 64)
+		if err != nil {
+			continue
+		}
+		result[uint(id)] = v
+	}
+	return result, nil
+}
+
+func (d *Device) SetAccumulatedRechargeBySeriesMap(m map[uint]int64) error {
+	raw := make(map[string]int64)
+	for k, v := range m {
+		raw[strconv.FormatUint(uint64(k), 10)] = v
+	}
+	data, err := json.Marshal(raw)
+	if err != nil {
+		return err
+	}
+	d.AccumulatedRechargeBySeriesJSON = string(data)
+	return nil
+}
+
+func (d *Device) GetAccumulatedRechargeBySeries(seriesID uint) int64 {
+	m, err := d.GetAccumulatedRechargeBySeriesMap()
+	if err != nil {
+		return 0
+	}
+	return m[seriesID]
+}
+
+func (d *Device) AddAccumulatedRechargeBySeries(seriesID uint, amount int64) error {
+	m, err := d.GetAccumulatedRechargeBySeriesMap()
+	if err != nil {
+		m = make(map[uint]int64)
+	}
+	m[seriesID] += amount
+	return d.SetAccumulatedRechargeBySeriesMap(m)
+}
+
+func (d *Device) GetFirstRechargeTriggeredBySeriesMap() (map[uint]bool, error) {
+	result := make(map[uint]bool)
+	if d.FirstRechargeTriggeredBySeriesJSON == "" || d.FirstRechargeTriggeredBySeriesJSON == "{}" {
+		return result, nil
+	}
+	var raw map[string]bool
+	if err := json.Unmarshal([]byte(d.FirstRechargeTriggeredBySeriesJSON), &raw); err != nil {
+		return nil, err
+	}
+	for k, v := range raw {
+		id, err := strconv.ParseUint(k, 10, 64)
+		if err != nil {
+			continue
+		}
+		result[uint(id)] = v
+	}
+	return result, nil
+}
+
+func (d *Device) SetFirstRechargeTriggeredBySeriesMap(m map[uint]bool) error {
+	raw := make(map[string]bool)
+	for k, v := range m {
+		raw[strconv.FormatUint(uint64(k), 10)] = v
+	}
+	data, err := json.Marshal(raw)
+	if err != nil {
+		return err
+	}
+	d.FirstRechargeTriggeredBySeriesJSON = string(data)
+	return nil
+}
+
+func (d *Device) IsFirstRechargeTriggeredBySeries(seriesID uint) bool {
+	m, err := d.GetFirstRechargeTriggeredBySeriesMap()
+	if err != nil {
+		return false
+	}
+	return m[seriesID]
+}
+
+func (d *Device) SetFirstRechargeTriggeredBySeries(seriesID uint, triggered bool) error {
+	m, err := d.GetFirstRechargeTriggeredBySeriesMap()
+	if err != nil {
+		m = make(map[uint]bool)
+	}
+	m[seriesID] = triggered
+	return d.SetFirstRechargeTriggeredBySeriesMap(m)
+}