优化交易创建流程，客户管理新增折扣与来源字段及功能

scripts/sql/init.sql

@@ -258,10 +258,12 @@ drop table if exists "user" cascade;
 create table "user" (
     id             int generated by default as identity primary key,
     admin_id       int,
+    discount_id    int,
     phone          text           not null unique,
     username       text,
     email          text,
     password       text,
+    source         int default 0,
     name           text,
     avatar         text,
     status         int            not null default 1,
@@ -279,6 +281,7 @@ create table "user" (
     deleted_at     timestamptz
 );
 create index idx_user_admin_id on "user" (admin_id) where deleted_at is null;
+create index idx_user_discount_id on "user" (discount_id) where deleted_at is null;
 create unique index udx_user_phone on "user" (phone) where deleted_at is null;
 create unique index udx_user_username on "user" (username) where deleted_at is null;
 create unique index udx_user_email on "user" (email) where deleted_at is null;
@@ -288,9 +291,11 @@ create index idx_user_created_at on "user" (created_at) where deleted_at is null
 comment on table "user" is '用户表';
 comment on column "user".id is '用户ID';
 comment on column "user".admin_id is '管理员ID';
+comment on column "user".discount_id is '折扣ID';
 comment on column "user".password is '用户密码';
 comment on column "user".username is '用户名';
 comment on column "user".phone is '手机号码';
+comment on column "user".source is '用户来源：0-官网注册，1-管理员添加，2-代理商注册，3-代理商添加';
 comment on column "user".name is '真实姓名';
 comment on column "user".avatar is '头像URL';
 comment on column "user".status is '用户状态：0-禁用，1-正常';
@@ -1053,6 +1058,8 @@ comment on column coupon.deleted_at is '删除时间';
 -- user表外键
 alter table "user"
     add constraint fk_user_admin_id foreign key (admin_id) references admin (id) on delete set null;
+alter table "user"
+    add constraint fk_user_discount_id foreign key (discount_id) references product_discount (id) on delete set null;
 
 -- session表外键
 alter table session