perf: IoT 卡 30M 行分页查询优化（P95 17.9s → <500ms）

- 新增 is_standalone 物化列 + 触发器自动维护（迁移 056）
- 并行查询拆分：多店铺 IN 查询拆为 per-shop goroutine 并行 Index Scan
- 两阶段延迟 Join：深度分页（page≥50）走覆盖索引 Index Only Scan 取 ID 再回表
- COUNT 缓存：per-shop 并行 COUNT + Redis 30 分钟 TTL
- 索引优化：删除有害全局索引、新增 partial composite indexes（迁移 057/058）
- ICCID 模糊搜索路径隔离：trigram GIN 索引走独立查询路径
- 慢查询阈值从 100ms 调整为 500ms
- 新增 30M 测试数据种子脚本和 benchmark 工具

migrations/000000_create_legacy_tables.up.sql

@@ -0,0 +1,98 @@
+-- 创建遗留表（原由 GORM AutoMigrate 自动创建，迁移文件中缺失）
+-- 这 4 张表是项目最早期通过 AutoMigrate 创建的，后续迁移 000001-000010 依赖它们的存在
+-- 本迁移还原 AutoMigrate 创建时的原始结构（不含后续 ALTER 添加的字段）
+
+-- ============================================================
+-- 1. 账号表（tb_account）
+-- 注意：此处包含 parent_id 字段，该字段在 000002 迁移中被 DROP
+-- 注意：enterprise_id 由 000002 添加，is_primary 由 000010 添加，此处不包含
+-- ============================================================
+CREATE TABLE IF NOT EXISTS tb_account (
+    id BIGSERIAL PRIMARY KEY,
+    created_at TIMESTAMP WITH TIME ZONE,
+    updated_at TIMESTAMP WITH TIME ZONE,
+    deleted_at TIMESTAMP WITH TIME ZONE,
+    creator BIGINT NOT NULL,
+    updater BIGINT NOT NULL,
+    username VARCHAR(50) NOT NULL,
+    phone VARCHAR(20) NOT NULL,
+    password VARCHAR(255) NOT NULL,
+    user_type BIGINT NOT NULL,
+    shop_id BIGINT,
+    parent_id BIGINT,
+    status BIGINT NOT NULL DEFAULT 1
+);
+
+-- 索引（与 GORM AutoMigrate 生成的一致）
+CREATE UNIQUE INDEX IF NOT EXISTS idx_account_username ON tb_account(username) WHERE deleted_at IS NULL;
+CREATE UNIQUE INDEX IF NOT EXISTS idx_account_phone ON tb_account(phone) WHERE deleted_at IS NULL;
+CREATE INDEX IF NOT EXISTS idx_tb_account_user_type ON tb_account(user_type);
+CREATE INDEX IF NOT EXISTS idx_tb_account_shop_id ON tb_account(shop_id);
+CREATE INDEX IF NOT EXISTS idx_tb_account_deleted_at ON tb_account(deleted_at);
+
+-- ============================================================
+-- 2. 权限表（tb_permission）
+-- 注意：platform 由 000003 添加，available_for_role_types 由 000009 添加，此处不包含
+-- ============================================================
+CREATE TABLE IF NOT EXISTS tb_permission (
+    id BIGSERIAL PRIMARY KEY,
+    created_at TIMESTAMP WITH TIME ZONE,
+    updated_at TIMESTAMP WITH TIME ZONE,
+    deleted_at TIMESTAMP WITH TIME ZONE,
+    creator BIGINT NOT NULL,
+    updater BIGINT NOT NULL,
+    perm_name VARCHAR(50) NOT NULL,
+    perm_code VARCHAR(100) NOT NULL,
+    perm_type BIGINT NOT NULL,
+    url VARCHAR(255),
+    parent_id BIGINT,
+    sort BIGINT NOT NULL DEFAULT 0,
+    status BIGINT NOT NULL DEFAULT 1
+);
+
+-- 索引
+CREATE UNIQUE INDEX IF NOT EXISTS idx_permission_code ON tb_permission(perm_code) WHERE deleted_at IS NULL;
+CREATE INDEX IF NOT EXISTS idx_tb_permission_perm_type ON tb_permission(perm_type);
+CREATE INDEX IF NOT EXISTS idx_tb_permission_parent_id ON tb_permission(parent_id);
+CREATE INDEX IF NOT EXISTS idx_tb_permission_deleted_at ON tb_permission(deleted_at);
+
+-- ============================================================
+-- 3. 角色表（tb_role）
+-- ============================================================
+CREATE TABLE IF NOT EXISTS tb_role (
+    id BIGSERIAL PRIMARY KEY,
+    created_at TIMESTAMP WITH TIME ZONE,
+    updated_at TIMESTAMP WITH TIME ZONE,
+    deleted_at TIMESTAMP WITH TIME ZONE,
+    creator BIGINT NOT NULL,
+    updater BIGINT NOT NULL,
+    role_name VARCHAR(50) NOT NULL,
+    role_desc VARCHAR(255),
+    role_type BIGINT NOT NULL,
+    status BIGINT NOT NULL DEFAULT 1
+);
+
+-- 索引
+CREATE INDEX IF NOT EXISTS idx_tb_role_role_type ON tb_role(role_type);
+CREATE INDEX IF NOT EXISTS idx_tb_role_deleted_at ON tb_role(deleted_at);
+
+-- ============================================================
+-- 4. 角色权限关联表（tb_role_permission）
+-- ============================================================
+CREATE TABLE IF NOT EXISTS tb_role_permission (
+    id BIGSERIAL PRIMARY KEY,
+    created_at TIMESTAMP WITH TIME ZONE,
+    updated_at TIMESTAMP WITH TIME ZONE,
+    deleted_at TIMESTAMP WITH TIME ZONE,
+    creator BIGINT NOT NULL,
+    updater BIGINT NOT NULL,
+    role_id BIGINT NOT NULL,
+    perm_id BIGINT NOT NULL,
+    status BIGINT NOT NULL DEFAULT 1
+);
+
+-- 索引
+CREATE INDEX IF NOT EXISTS idx_tb_role_permission_role_id ON tb_role_permission(role_id);
+CREATE INDEX IF NOT EXISTS idx_tb_role_permission_perm_id ON tb_role_permission(perm_id);
+CREATE UNIQUE INDEX IF NOT EXISTS idx_role_permission_unique ON tb_role_permission(role_id, perm_id) WHERE deleted_at IS NULL;
+CREATE INDEX IF NOT EXISTS idx_tb_role_permission_deleted_at ON tb_role_permission(deleted_at);