重构: 店铺套餐分配系统从加价模式改为返佣模式

主要变更：
- 重构分配模型：从加价模式（pricing_mode/pricing_value）改为返佣模式（base_commission + tier_commission）
- 删除独立的 my_package 接口，统一到 /api/admin/packages（通过数据权限自动过滤）
- 新增批量分配和批量调价功能，支持事务和性能优化
- 新增配置版本管理，订单创建时锁定返佣配置
- 新增成本价历史记录，支持审计和纠纷处理
- 新增统计缓存系统（Redis + 异步任务），优化梯度返佣计算性能
- 删除冗余的梯度佣金独立 CRUD 接口（合并到分配配置中）
- 归档 3 个已完成的 OpenSpec changes 并同步 8 个新 capabilities 到 main specs

技术细节：
- 数据库迁移：000026_refactor_shop_package_allocation
- 新增 Store：AllocationConfigStore, PriceHistoryStore, CommissionStatsStore
- 新增 Service：BatchAllocationService, BatchPricingService, CommissionStatsService
- 新增异步任务：统计更新、定时同步、周期归档
- 测试覆盖：批量操作集成测试、梯度佣金 CRUD 清理验证

影响：
- API 变更：删除 4 个梯度 CRUD 接口（POST/GET/PUT/DELETE /:id/tiers）
- API 新增：批量分配、批量调价接口
- 数据模型：重构 shop_series_allocation 表结构
- 性能优化：批量操作使用 CreateInBatches，统计使用 Redis 缓存

相关文档：
- openspec/changes/archive/2026-01-28-refactor-shop-package-allocation/
- openspec/specs/agent-available-packages/
- openspec/specs/allocation-config-versioning/
- 等 8 个新 capability specs

migrations/000026_refactor_shop_package_allocation.down.sql

@@ -0,0 +1,62 @@
+-- 回滚重构套餐分配和佣金系统的迁移
+
+-- ============================================================
+-- 6. 删除额外索引
+-- ============================================================
+
+DROP INDEX IF EXISTS idx_package_allocation_shop_pkg;
+
+-- ============================================================
+-- 5. 删除 tb_shop_series_commission_stats 表
+-- ============================================================
+
+DROP TABLE IF EXISTS tb_shop_series_commission_stats;
+
+-- ============================================================
+-- 4. 删除 tb_shop_package_allocation_price_history 表
+-- ============================================================
+
+DROP TABLE IF EXISTS tb_shop_package_allocation_price_history;
+
+-- ============================================================
+-- 3. 删除 tb_shop_series_allocation_config 表
+-- ============================================================
+
+DROP TABLE IF EXISTS tb_shop_series_allocation_config;
+
+-- ============================================================
+-- 2. 回滚 tb_shop_series_commission_tier 表修改
+-- ============================================================
+
+-- 回滚字段重命名
+ALTER TABLE tb_shop_series_commission_tier 
+RENAME COLUMN commission_value TO commission_amount;
+
+-- 删除新增字段
+ALTER TABLE tb_shop_series_commission_tier 
+DROP COLUMN IF EXISTS commission_mode;
+
+-- ============================================================
+-- 1. 回滚 tb_shop_series_allocation 表修改
+-- ============================================================
+
+-- 删除新增字段
+ALTER TABLE tb_shop_series_allocation 
+DROP COLUMN IF EXISTS base_commission_mode,
+DROP COLUMN IF EXISTS base_commission_value,
+DROP COLUMN IF EXISTS enable_tier_commission;
+
+-- 恢复旧字段
+ALTER TABLE tb_shop_series_allocation 
+ADD COLUMN pricing_mode VARCHAR(20),
+ADD COLUMN pricing_value BIGINT,
+ADD COLUMN one_time_commission_trigger VARCHAR(30),
+ADD COLUMN one_time_commission_threshold BIGINT DEFAULT 0,
+ADD COLUMN one_time_commission_amount BIGINT DEFAULT 0;
+
+-- 恢复字段注释
+COMMENT ON COLUMN tb_shop_series_allocation.pricing_mode IS '加价模式 fixed-固定金额 percent-百分比';
+COMMENT ON COLUMN tb_shop_series_allocation.pricing_value IS '加价值（分或千分比）';
+COMMENT ON COLUMN tb_shop_series_allocation.one_time_commission_trigger IS '一次性佣金触发类型 one_time_recharge-单次充值 accumulated_recharge-累计充值';
+COMMENT ON COLUMN tb_shop_series_allocation.one_time_commission_threshold IS '一次性佣金触发阈值（分）';
+COMMENT ON COLUMN tb_shop_series_allocation.one_time_commission_amount IS '一次性佣金金额（分）';

migrations/000026_refactor_shop_package_allocation.up.sql

@@ -0,0 +1,153 @@
+-- 重构套餐分配和佣金系统
+-- 1. 删除自动加价机制（pricing_mode, pricing_value）
+-- 2. 重构返佣配置（新增 base_commission_mode, base_commission_value, enable_tier_commission）
+-- 3. 修正梯度佣金逻辑（commission_tier 新增 commission_mode）
+-- 4. 新增配置版本管理、成本价历史、统计缓存表
+
+-- ============================================================
+-- 1. 修改 tb_shop_series_allocation 表
+-- ============================================================
+
+-- 删除旧字段
+ALTER TABLE tb_shop_series_allocation 
+DROP COLUMN IF EXISTS pricing_mode,
+DROP COLUMN IF EXISTS pricing_value,
+DROP COLUMN IF EXISTS one_time_commission_trigger,
+DROP COLUMN IF EXISTS one_time_commission_threshold,
+DROP COLUMN IF EXISTS one_time_commission_amount;
+
+-- 新增新字段
+ALTER TABLE tb_shop_series_allocation 
+ADD COLUMN base_commission_mode VARCHAR(20) NOT NULL DEFAULT 'percent',
+ADD COLUMN base_commission_value BIGINT NOT NULL DEFAULT 0,
+ADD COLUMN enable_tier_commission BOOLEAN NOT NULL DEFAULT FALSE;
+
+-- 添加字段注释
+COMMENT ON COLUMN tb_shop_series_allocation.base_commission_mode IS '基础返佣模式 fixed-固定金额 percent-百分比';
+COMMENT ON COLUMN tb_shop_series_allocation.base_commission_value IS '基础返佣值（分或千分比，如200=20%）';
+COMMENT ON COLUMN tb_shop_series_allocation.enable_tier_commission IS '是否启用梯度返佣';
+
+-- ============================================================
+-- 2. 修改 tb_shop_series_commission_tier 表
+-- ============================================================
+
+-- 新增 commission_mode 字段
+ALTER TABLE tb_shop_series_commission_tier 
+ADD COLUMN commission_mode VARCHAR(20) NOT NULL DEFAULT 'percent';
+
+-- 添加字段注释
+COMMENT ON COLUMN tb_shop_series_commission_tier.commission_mode IS '达标后返佣模式 fixed-固定金额 percent-百分比';
+
+-- 删除旧字段 commission_amount，重命名为更语义化的 commission_value
+ALTER TABLE tb_shop_series_commission_tier 
+RENAME COLUMN commission_amount TO commission_value;
+
+-- 更新字段注释
+COMMENT ON COLUMN tb_shop_series_commission_tier.commission_value IS '达标后返佣值（分或千分比）';
+
+-- ============================================================
+-- 3. 创建 tb_shop_series_allocation_config 表（配置版本表）
+-- ============================================================
+
+CREATE TABLE IF NOT EXISTS tb_shop_series_allocation_config (
+    id BIGSERIAL PRIMARY KEY,
+    created_at TIMESTAMPTZ DEFAULT NOW(),
+    updated_at TIMESTAMPTZ DEFAULT NOW(),
+    deleted_at TIMESTAMPTZ,
+    allocation_id BIGINT NOT NULL,
+    version INT NOT NULL,
+    base_commission_mode VARCHAR(20) NOT NULL,
+    base_commission_value BIGINT NOT NULL,
+    enable_tier_commission BOOLEAN NOT NULL,
+    effective_from TIMESTAMPTZ NOT NULL,
+    effective_to TIMESTAMPTZ
+);
+
+-- 创建索引
+CREATE INDEX IF NOT EXISTS idx_allocation_config_allocation_id ON tb_shop_series_allocation_config(allocation_id);
+CREATE INDEX IF NOT EXISTS idx_allocation_config_effective ON tb_shop_series_allocation_config(allocation_id, effective_to);
+
+-- 添加表和字段注释
+COMMENT ON TABLE tb_shop_series_allocation_config IS '套餐系列分配配置版本表';
+COMMENT ON COLUMN tb_shop_series_allocation_config.allocation_id IS '关联的分配ID';
+COMMENT ON COLUMN tb_shop_series_allocation_config.version IS '配置版本号';
+COMMENT ON COLUMN tb_shop_series_allocation_config.base_commission_mode IS '基础返佣模式（配置快照）';
+COMMENT ON COLUMN tb_shop_series_allocation_config.base_commission_value IS '基础返佣值（配置快照）';
+COMMENT ON COLUMN tb_shop_series_allocation_config.enable_tier_commission IS '是否启用梯度返佣（配置快照）';
+COMMENT ON COLUMN tb_shop_series_allocation_config.effective_from IS '生效开始时间';
+COMMENT ON COLUMN tb_shop_series_allocation_config.effective_to IS '生效结束时间（NULL表示当前生效）';
+
+-- ============================================================
+-- 4. 创建 tb_shop_package_allocation_price_history 表（成本价历史表）
+-- ============================================================
+
+CREATE TABLE IF NOT EXISTS tb_shop_package_allocation_price_history (
+    id BIGSERIAL PRIMARY KEY,
+    created_at TIMESTAMPTZ DEFAULT NOW(),
+    updated_at TIMESTAMPTZ DEFAULT NOW(),
+    deleted_at TIMESTAMPTZ,
+    allocation_id BIGINT NOT NULL,
+    old_cost_price BIGINT NOT NULL,
+    new_cost_price BIGINT NOT NULL,
+    change_reason VARCHAR(255),
+    changed_by BIGINT NOT NULL,
+    effective_from TIMESTAMPTZ NOT NULL
+);
+
+-- 创建索引
+CREATE INDEX IF NOT EXISTS idx_price_history_allocation ON tb_shop_package_allocation_price_history(allocation_id, effective_from);
+
+-- 添加表和字段注释
+COMMENT ON TABLE tb_shop_package_allocation_price_history IS '套餐成本价变更历史表';
+COMMENT ON COLUMN tb_shop_package_allocation_price_history.allocation_id IS '关联的套餐分配ID（tb_shop_package_allocation.id）';
+COMMENT ON COLUMN tb_shop_package_allocation_price_history.old_cost_price IS '原成本价（分）';
+COMMENT ON COLUMN tb_shop_package_allocation_price_history.new_cost_price IS '新成本价（分）';
+COMMENT ON COLUMN tb_shop_package_allocation_price_history.change_reason IS '变更原因';
+COMMENT ON COLUMN tb_shop_package_allocation_price_history.changed_by IS '变更人ID';
+COMMENT ON COLUMN tb_shop_package_allocation_price_history.effective_from IS '生效时间';
+
+-- ============================================================
+-- 5. 创建 tb_shop_series_commission_stats 表（统计缓存表）
+-- ============================================================
+
+CREATE TABLE IF NOT EXISTS tb_shop_series_commission_stats (
+    id BIGSERIAL PRIMARY KEY,
+    created_at TIMESTAMPTZ DEFAULT NOW(),
+    updated_at TIMESTAMPTZ DEFAULT NOW(),
+    deleted_at TIMESTAMPTZ,
+    allocation_id BIGINT NOT NULL,
+    period_type VARCHAR(20) NOT NULL,
+    period_start TIMESTAMPTZ NOT NULL,
+    period_end TIMESTAMPTZ NOT NULL,
+    total_sales_count BIGINT DEFAULT 0 NOT NULL,
+    total_sales_amount BIGINT DEFAULT 0 NOT NULL,
+    current_tier_id BIGINT,
+    last_updated_at TIMESTAMPTZ NOT NULL,
+    version INT DEFAULT 0 NOT NULL,
+    status VARCHAR(20) DEFAULT 'active' NOT NULL
+);
+
+-- 创建索引
+CREATE INDEX IF NOT EXISTS idx_commission_stats_allocation_id ON tb_shop_series_commission_stats(allocation_id);
+CREATE INDEX IF NOT EXISTS idx_commission_stats_period ON tb_shop_series_commission_stats(allocation_id, period_start, period_end);
+CREATE UNIQUE INDEX IF NOT EXISTS idx_commission_stats_unique ON tb_shop_series_commission_stats(allocation_id, period_type, period_start) WHERE deleted_at IS NULL;
+
+-- 添加表和字段注释
+COMMENT ON TABLE tb_shop_series_commission_stats IS '梯度佣金统计缓存表';
+COMMENT ON COLUMN tb_shop_series_commission_stats.allocation_id IS '关联的分配ID';
+COMMENT ON COLUMN tb_shop_series_commission_stats.period_type IS '周期类型 monthly-月度 quarterly-季度 yearly-年度';
+COMMENT ON COLUMN tb_shop_series_commission_stats.period_start IS '周期开始时间';
+COMMENT ON COLUMN tb_shop_series_commission_stats.period_end IS '周期结束时间';
+COMMENT ON COLUMN tb_shop_series_commission_stats.total_sales_count IS '总销售数量';
+COMMENT ON COLUMN tb_shop_series_commission_stats.total_sales_amount IS '总销售金额（分）';
+COMMENT ON COLUMN tb_shop_series_commission_stats.current_tier_id IS '当前匹配的梯度ID';
+COMMENT ON COLUMN tb_shop_series_commission_stats.last_updated_at IS '最后更新时间';
+COMMENT ON COLUMN tb_shop_series_commission_stats.version IS '版本号（乐观锁）';
+COMMENT ON COLUMN tb_shop_series_commission_stats.status IS '状态 active-活跃 completed-已完成 cancelled-已取消';
+
+-- ============================================================
+-- 6. 创建额外索引（性能优化）
+-- ============================================================
+
+-- tb_shop_package_allocation 表新增复合索引（用于代理权限过滤）
+CREATE INDEX IF NOT EXISTS idx_package_allocation_shop_pkg ON tb_shop_package_allocation(shop_id, package_id, status);