sql数据流，amdin业务逻辑接入

docs/sql/10_schema/distribution/ak_distribution_divisions_v1.sql

@@ -0,0 +1,46 @@
+-- =====================================================================================
+-- Schema: 分销事业部管理表
+-- 位置：docs/sql/10_schema/distribution/ak_distribution_divisions_v1.sql
+-- 说明：管理分销体系中的事业部，支持独立分销比例、邀请码及有效期，按商家隔离。
+-- =====================================================================================
+
+CREATE TABLE IF NOT EXISTS public.ak_distribution_divisions (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    merchant_id UUID NOT NULL REFERENCES public.ak_users(id) ON DELETE CASCADE,
+    
+    uid UUID NOT NULL REFERENCES public.ak_users(id), -- 事业部负责人UID
+    name TEXT NOT NULL,                          -- 事业部名称
+    invite_code TEXT UNIQUE NOT NULL,            -- 事业部专属邀请码
+    
+    ratio DECIMAL(5,2) DEFAULT 0,                -- 事业部额外分销比例 (%)
+    agent_count INTEGER DEFAULT 0,               -- 下属代理商数量 (由程序或触发器维护)
+    
+    end_time TIMESTAMPTZ,                        -- 协议截止时间
+    status BOOLEAN DEFAULT true,                 -- 状态: true开启, false关闭
+    
+    created_at TIMESTAMPTZ DEFAULT now(),
+    updated_at TIMESTAMPTZ DEFAULT now(),
+
+    -- 约束：一个用户在一个商家下只能负责一个事业部
+    UNIQUE(merchant_id, uid)
+);
+
+-- 启用 RLS
+ALTER TABLE public.ak_distribution_divisions ENABLE ROW LEVEL SECURITY;
+
+-- 权限策略
+CREATE POLICY "Merchants manage their own divisions" 
+ON public.ak_distribution_divisions FOR ALL 
+TO authenticated
+USING (merchant_id = auth.uid())
+WITH CHECK (merchant_id = auth.uid());
+
+-- 允许查看
+CREATE POLICY "Authenticated users view active divisions" 
+ON public.ak_distribution_divisions FOR SELECT 
+TO authenticated
+USING (status = true);
+
+-- 索引
+CREATE INDEX IF NOT EXISTS idx_divisions_merchant ON public.ak_distribution_divisions(merchant_id);
+CREATE INDEX IF NOT EXISTS idx_divisions_uid ON public.ak_distribution_divisions(uid);