diff --git a/apps/api/src/db/migrate.ts b/apps/api/src/db/migrate.ts
new file mode 100644
index 0000000..f33853d
--- /dev/null
+++ b/apps/api/src/db/migrate.ts
@@ -0,0 +1,53 @@
+// 程序化数据库供给与迁移（Task 13）：drizzle-kit migrate 只认 drizzle.config 的
+// DATABASE_URL（requireDatabaseUrl allowTestUrl:false），无法指向运行时才创建的
+// 临时库——vitest globalSetup 用本模块对 sf_test_* 临时库完成 CREATE + 全量迁移 + DROP。
+// 驱动依赖（postgres / drizzle-orm）必须从本包解析：仓库根 node_modules 不含它们，
+// tests/ 下的调用方无法裸 import，故统一收口在本文件。
+import { dirname, join } from 'node:path'
+import { fileURLToPath } from 'node:url'
+import postgres from 'postgres'
+import { drizzle } from 'drizzle-orm/postgres-js'
+import { migrate } from 'drizzle-orm/postgres-js/migrator'
+
+// 本文件位于 apps/api/src/db/ → 上两级是 apps/api/，迁移产物在其 drizzle/ 子目录
+const defaultMigrationsFolder = join(dirname(fileURLToPath(import.meta.url)), '..', '..', 'drizzle')
+
+// CREATE/DROP DATABASE 不能走参数绑定（且本身是 DDL），名称先做白名单校验再内插。
+function assertSafeName(name: string): void {
+  if (!/^[a-z0-9_]+$/i.test(name)) throw new Error(`unsafe database name: ${name}`)
+}
+
+/** 对显式连接串的目标库执行 apps/api/drizzle 下的全量迁移（空库 → 最新 schema）。 */
+export async function migrateDatabase(
+  connectionString: string,
+  migrationsFolder: string = defaultMigrationsFolder,
+): Promise<void> {
+  const sql = postgres(connectionString, { max: 1 })
+  try {
+    await migrate(drizzle(sql), { migrationsFolder })
+  } finally {
+    await sql.end()
+  }
+}
+
+/** 在 adminUrl（指向 postgres 维护库的连接串）所标识的集群里创建新数据库。 */
+export async function createDatabase(adminConnectionString: string, name: string): Promise<void> {
+  assertSafeName(name)
+  const sql = postgres(adminConnectionString, { max: 1 })
+  try {
+    await sql.unsafe(`create database "${name}"`)
+  } finally {
+    await sql.end()
+  }
+}
+
+/** 删除数据库。WITH (FORCE)（PG 13+）先断开目标库上的残余业务连接再删——测试池泄漏时不卡 teardown。 */
+export async function dropDatabase(adminConnectionString: string, name: string): Promise<void> {
+  assertSafeName(name)
+  const sql = postgres(adminConnectionString, { max: 1 })
+  try {
+    await sql.unsafe(`drop database if exists "${name}" with (force)`)
+  } finally {
+    await sql.end()
+  }
+}
diff --git a/scripts/migrate-test.sh b/scripts/migrate-test.sh
new file mode 100644
index 0000000..91d6583
--- /dev/null
+++ b/scripts/migrate-test.sh
@@ -0,0 +1,10 @@
+#!/usr/bin/env bash
+# 一键空库迁移验收（Task 13）：确保 docker PG 在跑 → 跑全量测试。
+# vitest globalSetup 每次运行会新建 sf_test_<ts> 临时库、跑全量迁移、结束 DROP——
+# 开发库（siteforge）零写入，无需预迁移。
+# --wait：等 PG 容器 healthcheck 就绪再继续，避免冷启动期连接被拒。
+set -euo pipefail
+cd "$(dirname "$0")/.."
+
+docker compose -f infra/docker-compose.yml up -d --wait
+pnpm test
diff --git a/tests/integration/db.content.test.ts b/tests/integration/db.content.test.ts
index 5981139..ee5f65a 100644
--- a/tests/integration/db.content.test.ts
+++ b/tests/integration/db.content.test.ts
@@ -1,11 +1,11 @@
 // 内容域集成测试：修订不可变触发器（UPDATE/DELETE 拒绝）+ entry_locales 三元组唯一 +
 // 双指针语义（发布=只动 entry_locales 指针，不碰修订行）+ source_records.content_entry_id 回填 FK。
-// 生命周期纪律：随机后缀插入 + finally 反序清理；不可变表（content_revisions / source_snapshots）
-// 清场走点名 DISABLE TRIGGER → 删本级行 → ENABLE，嵌套 finally 保证触发器必然恢复。
+// Task 13 起夹具走公共 helpers（createSiteFixture/withImmutableCleanup/withTestDb/rejectionMessage）；
+// 生命周期纪律不变：随机后缀插入 + finally 反序清理；不可变表（content_revisions / source_snapshots）
+// 清场走 DISABLE→删→ENABLE 封装，嵌套 finally 保证触发器必然恢复。
 import { describe, it, expect } from 'vitest'
-import { getDb } from '../../apps/api/src/db/client.js'
+import { createSiteFixture, withImmutableCleanup, withTestDb, rejectionMessage, type Db } from './helpers.js'
 
-type Db = ReturnType<typeof getDb>
 type Fixture = {
   siteId: string
   entryId: string
@@ -19,10 +19,9 @@ type Fixture = {
 // 建链（FK 依赖顺序）：site → content_entry → content_revision → entry_locale（current 指针指向该修订，published=NULL）；
 // 另建 source 链（connection → snapshot → job）供 source_records FK 探针使用。
 async function setupContentFixture(db: Db): Promise<Fixture> {
-  const rand = `${Date.now()}-${Math.random().toString(36).slice(2, 8)}`
-  const site = (await db.execute(`insert into sites (id, key, name, default_locale, production_origin)
-    values (gen_random_uuid(), 'content-${rand}', 'ContentFixture', 'en', 'https://content.example') returning id`)) as any
-  const siteId = site[0].id
+  const site = await createSiteFixture(db, 'content')
+  const rand = site.rand
+  const siteId = site.siteId
   const entry = (await db.execute(`insert into content_entries (id, site_id, type_key, lifecycle_status)
     values (gen_random_uuid(), '${siteId}', 'post', 'active') returning id`)) as any
   const entryId = entry[0].id
@@ -41,48 +40,27 @@ async function setupContentFixture(db: Db): Promise<Fixture> {
   return { siteId, entryId, localeId: locale[0].id, revisionId, connectionId, snapshotId: snap[0].id, importJobId: job[0].id }
 }
 
-// 反序清理。source_records 先于 content_entries（新 FK）；两张不可变表逐一 DISABLE → 删 → ENABLE（嵌套 finally）。
+// 反序清理。source_records 先于 content_entries（新 FK）；两张不可变表逐一 DISABLE→删→ENABLE。
 async function cleanupContentFixture(db: Db, f: Fixture) {
   await db.execute(`delete from source_records where site_id = '${f.siteId}'`)
   await db.execute(`delete from entry_locales where site_id = '${f.siteId}'`)
-  await db.execute(`alter table content_revisions disable trigger content_revisions_immutable`)
-  try {
-    await db.execute(`delete from content_revisions where site_id = '${f.siteId}'`)
-  } finally {
-    await db.execute(`alter table content_revisions enable trigger content_revisions_immutable`)
-  }
+  await withImmutableCleanup(db, 'content_revisions', 'content_revisions_immutable', `site_id = '${f.siteId}'`)
   await db.execute(`delete from import_jobs where site_id = '${f.siteId}'`)
-  await db.execute(`alter table source_snapshots disable trigger source_snapshots_immutable`)
-  try {
-    await db.execute(`delete from source_snapshots where site_id = '${f.siteId}'`)
-  } finally {
-    await db.execute(`alter table source_snapshots enable trigger source_snapshots_immutable`)
-  }
+  await withImmutableCleanup(db, 'source_snapshots', 'source_snapshots_immutable', `site_id = '${f.siteId}'`)
   await db.execute(`delete from source_connections where site_id = '${f.siteId}'`)
   await db.execute(`delete from content_entries where site_id = '${f.siteId}'`)
   await db.execute(`delete from sites where id = '${f.siteId}'`)
 }
 
 async function withContentFixture(fn: (db: Db, f: Fixture) => Promise<void>) {
-  const db = getDb()
-  const f = await setupContentFixture(db)
-  try {
-    await fn(db, f)
-  } finally {
-    await cleanupContentFixture(db, f)
-    await (db as any).$client.end()
-  }
-}
-
-// drizzle 会把 PostgresError 包成 DrizzleQueryError（message 只有 "Failed query: ..."），
-// 服务端原始错误文本在 cause 里——断言触发器/约束身份时必须看 cause。
-async function rejectionMessage(db: Db, query: string): Promise<string> {
-  try {
-    await db.execute(query)
-  } catch (e: any) {
-    return String(e?.cause?.message ?? e?.message ?? e)
-  }
-  throw new Error(`expected query to be rejected: ${query}`)
+  await withTestDb(async (db) => {
+    const f = await setupContentFixture(db)
+    try {
+      await fn(db, f)
+    } finally {
+      await cleanupContentFixture(db, f)
+    }
+  })
 }
 
 describe('内容域约束（修订不可变 + 双指针）', () => {
diff --git a/tests/integration/db.full-migrate.test.ts b/tests/integration/db.full-migrate.test.ts
new file mode 100644
index 0000000..907415d
--- /dev/null
+++ b/tests/integration/db.full-migrate.test.ts
@@ -0,0 +1,47 @@
+// 空库全量迁移验收（Task 13 / 阶段 1 收官）：globalSetup 对 sf_test_<ts> 临时库跑
+// apps/api/drizzle 全量迁移（0000–0006），本文件在空迁移后的临时库上断言：
+//   1. 21 张域表全部存在（数量恰为 21——既防缺表也防多表）；
+//   2. 四张不可变表的触发器在库；
+//   3. 护栏：current_database() 必须是 sf_test_*（globalSetup 生效证明 + 绝不静默连开发库）。
+// 全文件零写入——验收的是迁移产物本身。
+import { describe, it, expect } from 'vitest'
+import { getDb } from '../../apps/api/src/db/client.js'
+
+const EXPECTED_TABLES = [
+  'sites', 'site_config_revisions',
+  'source_connections', 'source_snapshots', 'import_jobs', 'source_records',
+  'content_entries', 'entry_locales', 'content_revisions',
+  'taxonomies', 'terms', 'content_terms',
+  'media_assets', 'media_usages',
+  'route_registry',
+  'build_jobs', 'build_input_snapshots', 'build_artifacts', 'validation_runs', 'validation_issues',
+  'audit_logs',
+]
+
+describe('空库全量迁移', () => {
+  it('一键迁移后 21 张核心表全部存在', async () => {
+    const db = getDb()
+    const r = await db.execute(`select table_name from information_schema.tables where table_schema='public'`)
+    const tables = (r as any[]).map((x) => (x as any).table_name)
+    for (const t of EXPECTED_TABLES) expect(tables).toContain(t)
+    expect(tables.filter((t: string) => EXPECTED_TABLES.includes(t)).length).toBe(21)
+  })
+
+  it('四张不可变表的触发器在库', async () => {
+    const db = getDb()
+    const r = await db.execute(`select trigger_name from information_schema.triggers where trigger_schema='public'`)
+    const names = new Set((r as any[]).map((x) => (x as any).trigger_name))
+    for (const t of ['source_snapshots_immutable', 'content_revisions_immutable', 'build_input_snapshots_immutable', 'audit_logs_immutable']) {
+      expect(names.has(t)).toBe(true)
+    }
+  })
+
+  it('护栏：套件运行在 globalSetup 创建的 sf_test_* 临时库上，绝不连开发库', async () => {
+    const db = getDb()
+    const r = (await db.execute(`select current_database() as db`)) as any
+    // globalSetup 未生效时此断言失败（current_database 是开发库 siteforge）——
+    // 宁可红也不让集成测试静默读写开发库。
+    expect(r[0].db).toMatch(/^sf_test_\d+$/)
+    expect(process.env.DATABASE_URL_TEST ?? '').toMatch(/^postgres:\/\/.*sf_test_\d+$/)
+  })
+})
diff --git a/tests/integration/db.jobs.test.ts b/tests/integration/db.jobs.test.ts
index 728b0f8..0b9d6b6 100644
--- a/tests/integration/db.jobs.test.ts
+++ b/tests/integration/db.jobs.test.ts
@@ -1,13 +1,13 @@
 // 构建/验收/审计域集成测试（0006 迁移）：build_jobs 幂等键唯一 + 状态 enum 八值、
 // build_input_snapshots 不可变触发器 + build_job_id UNIQUE、build_artifacts 三元组唯一、
 // audit_logs 追加式（UPDATE/DELETE 拒绝）、validation_issues.severity 可写。
-// 生命周期纪律：随机后缀插入 + finally 反序清理；两张不可变表（build_input_snapshots /
-// audit_logs）清场走点名 DISABLE TRIGGER → 删本级行 → ENABLE，嵌套 finally 保证触发器必然恢复。
+// Task 13 起夹具走公共 helpers（createSiteFixture/withImmutableCleanup/withTestDb/rejectionMessage）；
+// 生命周期纪律不变：随机后缀插入 + finally 反序清理；两张不可变表（build_input_snapshots /
+// audit_logs）清场走 DISABLE→删→ENABLE 封装。
 // audit_logs 组织级行（site_id NULL，spec §5.8）无 site 可挂——清场按 fixture 唯一 command_id 圈定。
 import { describe, it, expect } from 'vitest'
-import { getDb } from '../../apps/api/src/db/client.js'
+import { createSiteFixture, withImmutableCleanup, withTestDb, rejectionMessage, type Db } from './helpers.js'
 
-type Db = ReturnType<typeof getDb>
 type Fixture = {
   siteId: string
   buildJobId: string
@@ -20,10 +20,9 @@ type Fixture = {
 // 建链（FK 依赖顺序）：site → build_job → build_input_snapshot；validation_run 挂 site+job；
 // audit_logs 挂 site（站点级行；组织级 NULL 行在测试体内插，由 command_id 清场兜底）。
 async function setupJobsFixture(db: Db): Promise<Fixture> {
-  const rand = `${Date.now()}-${Math.random().toString(36).slice(2, 8)}`
-  const site = (await db.execute(`insert into sites (id, key, name, default_locale, production_origin)
-    values (gen_random_uuid(), 'jobs-${rand}', 'JobsFixture', 'en', 'https://jobs.example') returning id`)) as any
-  const siteId = site[0].id
+  const site = await createSiteFixture(db, 'jobs')
+  const rand = site.rand
+  const siteId = site.siteId
   const job = (await db.execute(`insert into build_jobs (id, site_id, status, idempotency_key, attempt)
     values (gen_random_uuid(), '${siteId}', 'queued', 'build-idem-${rand}', 0) returning id, idempotency_key`)) as any
   const buildJobId = job[0].id
@@ -45,48 +44,27 @@ async function setupJobsFixture(db: Db): Promise<Fixture> {
   }
 }
 
-// 反序清理：子表常规删除；两张不可变表逐一 DISABLE → 删 → ENABLE（嵌套 finally）；
+// 反序清理：子表常规删除；两张不可变表逐一 DISABLE→删→ENABLE（嵌套 finally 保证触发器恢复）；
 // audit_logs 按 fixture 唯一 command_id 删（含组织级 NULL site 行）；最后删 site。
 async function cleanupJobsFixture(db: Db, f: Fixture) {
   await db.execute(`delete from validation_issues where validation_run_id = '${f.validationRunId}'`)
   await db.execute(`delete from validation_runs where site_id = '${f.siteId}'`)
   await db.execute(`delete from build_artifacts where build_job_id = '${f.buildJobId}'`)
-  await db.execute(`alter table build_input_snapshots disable trigger build_input_snapshots_immutable`)
-  try {
-    await db.execute(`delete from build_input_snapshots where site_id = '${f.siteId}'`)
-  } finally {
-    await db.execute(`alter table build_input_snapshots enable trigger build_input_snapshots_immutable`)
-  }
-  await db.execute(`alter table audit_logs disable trigger audit_logs_immutable`)
-  try {
-    await db.execute(`delete from audit_logs where command_id = '${f.auditCommandId}'`)
-  } finally {
-    await db.execute(`alter table audit_logs enable trigger audit_logs_immutable`)
-  }
+  await withImmutableCleanup(db, 'build_input_snapshots', 'build_input_snapshots_immutable', `site_id = '${f.siteId}'`)
+  await withImmutableCleanup(db, 'audit_logs', 'audit_logs_immutable', `command_id = '${f.auditCommandId}'`)
   await db.execute(`delete from build_jobs where site_id = '${f.siteId}'`)
   await db.execute(`delete from sites where id = '${f.siteId}'`)
 }
 
 async function withJobsFixture(fn: (db: Db, f: Fixture) => Promise<void>) {
-  const db = getDb()
-  const f = await setupJobsFixture(db)
-  try {
-    await fn(db, f)
-  } finally {
-    await cleanupJobsFixture(db, f)
-    await (db as any).$client.end()
-  }
-}
-
-// drizzle 会把 PostgresError 包成 DrizzleQueryError（message 只有 "Failed query: ..."），
-// 服务端原始错误文本在 cause 里——断言触发器/约束/枚举身份时必须看 cause。
-async function rejectionMessage(db: Db, query: string): Promise<string> {
-  try {
-    await db.execute(query)
-  } catch (e: any) {
-    return String(e?.cause?.message ?? e?.message ?? e)
-  }
-  throw new Error(`expected query to be rejected: ${query}`)
+  await withTestDb(async (db) => {
+    const f = await setupJobsFixture(db)
+    try {
+      await fn(db, f)
+    } finally {
+      await cleanupJobsFixture(db, f)
+    }
+  })
 }
 
 // 不可变快照探测插入：换新 id 但复用 fixture 的 build_job_id（唯一键探测用）。
diff --git a/tests/integration/db.media.test.ts b/tests/integration/db.media.test.ts
index 83de60c..5bc89ee 100644
--- a/tests/integration/db.media.test.ts
+++ b/tests/integration/db.media.test.ts
@@ -2,13 +2,12 @@
 // （各带"换列值放行"对照组——同站不同源 URL / 不同公开路径都是合法的第二次入库）+
 // media_usages 复合主键 (media_asset_id, content_revision_id, field_path)（换 field_path 放行——
 // 同媒体同修订不同字段位引用合法）+ status enum 四值可写往返 + source_id 可空（WP 站外媒体无源 ID）。
-// 生命周期纪律：随机后缀插入 + finally 反序清理；content_revisions 不可变，清场走
-// DISABLE TRIGGER → 删本级行 → ENABLE，嵌套 finally 保证触发器必然恢复。
-// 清场顺序：usages → assets → connections →（DISABLE 删 revisions）→ entries → site。
+// Task 13 起夹具走公共 helpers（createSiteFixture/withImmutableCleanup/withTestDb/rejectionMessage）；
+// 生命周期纪律不变：随机后缀插入 + finally 反序清理；content_revisions 不可变，清场走
+// DISABLE→删→ENABLE 封装。清场顺序：usages → assets → connections →（删 revisions）→ entries → site。
 import { describe, it, expect } from 'vitest'
-import { getDb } from '../../apps/api/src/db/client.js'
+import { createSiteFixture, withImmutableCleanup, withTestDb, rejectionMessage, type Db } from './helpers.js'
 
-type Db = ReturnType<typeof getDb>
 type Fixture = {
   siteId: string
   connectionId: string
@@ -23,10 +22,9 @@ type Fixture = {
 // 建链（FK 依赖顺序）：site → source_connection（asset 的来源）+ content_entry → content_revision
 // （usage 的引用目标）→ media_asset（ready 态，供双唯一探测与 enum 往返）。
 async function setupMediaFixture(db: Db): Promise<Fixture> {
-  const rand = `${Date.now()}-${Math.random().toString(36).slice(2, 8)}`
-  const site = (await db.execute(`insert into sites (id, key, name, default_locale, production_origin)
-    values (gen_random_uuid(), 'media-${rand}', 'MediaFixture', 'en', 'https://media.example') returning id`)) as any
-  const siteId = site[0].id
+  const site = await createSiteFixture(db, 'media')
+  const rand = site.rand
+  const siteId = site.siteId
   const conn = (await db.execute(`insert into source_connections (id, site_id, kind, name, configuration)
     values (gen_random_uuid(), '${siteId}', 'wxr', 'media-conn-${rand}', '{}') returning id`)) as any
   const entry = (await db.execute(`insert into content_entries (id, site_id, type_key, lifecycle_status)
@@ -50,41 +48,25 @@ async function setupMediaFixture(db: Db): Promise<Fixture> {
 }
 
 // 反序清理：media_usages → media_assets → source_connections →
-// content_revisions（不可变：DISABLE → 删 → ENABLE 嵌套 finally）→ content_entries → site。
+// content_revisions（不可变：DISABLE→删→ENABLE）→ content_entries → site。
 async function cleanupMediaFixture(db: Db, f: Fixture) {
   await db.execute(`delete from media_usages where site_id = '${f.siteId}'`)
   await db.execute(`delete from media_assets where site_id = '${f.siteId}'`)
   await db.execute(`delete from source_connections where site_id = '${f.siteId}'`)
-  await db.execute(`alter table content_revisions disable trigger content_revisions_immutable`)
-  try {
-    await db.execute(`delete from content_revisions where site_id = '${f.siteId}'`)
-  } finally {
-    await db.execute(`alter table content_revisions enable trigger content_revisions_immutable`)
-  }
+  await withImmutableCleanup(db, 'content_revisions', 'content_revisions_immutable', `site_id = '${f.siteId}'`)
   await db.execute(`delete from content_entries where site_id = '${f.siteId}'`)
   await db.execute(`delete from sites where id = '${f.siteId}'`)
 }
 
 async function withMediaFixture(fn: (db: Db, f: Fixture) => Promise<void>) {
-  const db = getDb()
-  const f = await setupMediaFixture(db)
-  try {
-    await fn(db, f)
-  } finally {
-    await cleanupMediaFixture(db, f)
-    await (db as any).$client.end()
-  }
-}
-
-// drizzle 会把 PostgresError 包成 DrizzleQueryError（message 只有 "Failed query: ..."），
-// 服务端原始错误文本在 cause 里——断言约束/枚举身份时必须看 cause。
-async function rejectionMessage(db: Db, query: string): Promise<string> {
-  try {
-    await db.execute(query)
-  } catch (e: any) {
-    return String(e?.cause?.message ?? e?.message ?? e)
-  }
-  throw new Error(`expected query to be rejected: ${query}`)
+  await withTestDb(async (db) => {
+    const f = await setupMediaFixture(db)
+    try {
+      await fn(db, f)
+    } finally {
+      await cleanupMediaFixture(db, f)
+    }
+  })
 }
 
 // 探测插入的第二份资产：除显式指定的列外全部换新值，保证被测唯一键是唯一可能的冲突源。
diff --git a/tests/integration/db.routes.test.ts b/tests/integration/db.routes.test.ts
index 42ccbe2..c40d368 100644
--- a/tests/integration/db.routes.test.ts
+++ b/tests/integration/db.routes.test.ts
@@ -7,18 +7,16 @@
 //   3. query_key 参与唯一：同 exact key 下 query_key='p' 与 NULL 共存；同 'p' 第二条拒绝；
 //   4. route_kind enum 六值（html/asset/redirect/gone/dynamic/unresolved）往返 + 第七值拒绝；
 //   5. query_policy enum 四值（ignore/exact/preserve/dynamic）往返 + 第五值拒绝。
-// 生命周期纪律：随机后缀建 site + finally 反序清理（route_registry → sites）；本表无不可变触发器。
+// Task 13 起夹具走公共 helpers（createSiteFixture/withTestDb/rejectionMessage）；
+// 生命周期纪律不变：随机后缀建 site + finally 反序清理（route_registry → sites）；本表无不可变触发器。
 import { describe, it, expect } from 'vitest'
-import { getDb } from '../../apps/api/src/db/client.js'
+import { createSiteFixture, withTestDb, rejectionMessage, type Db } from './helpers.js'
 
-type Db = ReturnType<typeof getDb>
 type Fixture = { siteId: string; rand: string }
 
 async function setupRoutesFixture(db: Db): Promise<Fixture> {
-  const rand = `${Date.now()}-${Math.random().toString(36).slice(2, 8)}`
-  const site = (await db.execute(`insert into sites (id, key, name, default_locale, production_origin)
-    values (gen_random_uuid(), 'routes-${rand}', 'RoutesFixture', 'en', 'https://routes.example') returning id`)) as any
-  return { siteId: site[0].id, rand }
+  const site = await createSiteFixture(db, 'routes')
+  return { siteId: site.siteId, rand: site.rand }
 }
 
 // 反序清理：route_registry（无不可变触发器，直接删）→ sites（级联挡在 site 前，先删子表）。
@@ -28,25 +26,14 @@ async function cleanupRoutesFixture(db: Db, f: Fixture) {
 }
 
 async function withRoutesFixture(fn: (db: Db, f: Fixture) => Promise<void>) {
-  const db = getDb()
-  const f = await setupRoutesFixture(db)
-  try {
-    await fn(db, f)
-  } finally {
-    await cleanupRoutesFixture(db, f)
-    await (db as any).$client.end()
-  }
-}
-
-// drizzle 会把 PostgresError 包成 DrizzleQueryError（message 只有 "Failed query: ..."），
-// 服务端原始错误文本在 cause 里——断言约束/枚举身份时必须看 cause。
-async function rejectionMessage(db: Db, query: string): Promise<string> {
-  try {
-    await db.execute(query)
-  } catch (e: any) {
-    return String(e?.cause?.message ?? e?.message ?? e)
-  }
-  throw new Error(`expected query to be rejected: ${query}`)
+  await withTestDb(async (db) => {
+    const f = await setupRoutesFixture(db)
+    try {
+      await fn(db, f)
+    } finally {
+      await cleanupRoutesFixture(db, f)
+    }
+  })
 }
 
 // 探测插入：除显式指定的列外全部换新值（随机 suffix 的 id/path/collision_key），保证被测
diff --git a/tests/integration/db.sites.test.ts b/tests/integration/db.sites.test.ts
index 599e977..2c7b572 100644
--- a/tests/integration/db.sites.test.ts
+++ b/tests/integration/db.sites.test.ts
@@ -1,26 +1,24 @@
 // 站点域集成测试：约束在真 PG 上生效（唯一键、复合唯一键）。
-// 简易内联版——Task 13 收敛为公共 helper；本任务只需连库即可（getDb 从 apps/api 源码导入）。
-// 生命周期纪律：随机 key 插入 + finally 清理，可重复运行不残留脏数据。
+// Task 13 起夹具走公共 helpers（createSiteFixture/withTestDb）；
+// 生命周期纪律不变：随机 key 插入 + finally 清理，可重复运行不残留脏数据。
 import { describe, it, expect } from 'vitest'
-import { getDb } from '../../apps/api/src/db/client.js'
+import { createSiteFixture, withTestDb } from './helpers.js'
 
 describe('站点域约束', () => {
   it('sites.key 唯一；site_config_revisions (site_id,version) 唯一', async () => {
-    const db = getDb()
-    const key = `fixture-${Date.now()}-${Math.random().toString(36).slice(2, 8)}`
-    const r = (await db.execute(`insert into sites (id, key, name, default_locale, production_origin)
-      values (gen_random_uuid(), '${key}', 'Fixture', 'en', 'https://fixture.example') returning id`)) as any
-    const siteId = r[0].id
-    try {
-      await expect(db.execute(`insert into sites (id, key, name, default_locale, production_origin)
-        values (gen_random_uuid(), '${key}', 'Dup', 'en', 'https://x.example')`)).rejects.toThrow()
-      await db.execute(`insert into site_config_revisions (id, site_id, version, data, checksum)
-        values (gen_random_uuid(), '${siteId}', 1, '{"a":1}', 'c1')`)
-      await expect(db.execute(`insert into site_config_revisions (id, site_id, version, data, checksum)
-        values (gen_random_uuid(), '${siteId}', 1, '{"a":2}', 'c2')`)).rejects.toThrow()
-    } finally {
-      await db.execute(`delete from site_config_revisions where site_id = '${siteId}'`)
-      await db.execute(`delete from sites where id = '${siteId}'`)
-    }
+    await withTestDb(async (db) => {
+      const site = await createSiteFixture(db, 'fixture')
+      try {
+        await expect(db.execute(`insert into sites (id, key, name, default_locale, production_origin)
+          values (gen_random_uuid(), '${site.key}', 'Dup', 'en', 'https://x.example')`)).rejects.toThrow()
+        await db.execute(`insert into site_config_revisions (id, site_id, version, data, checksum)
+          values (gen_random_uuid(), '${site.siteId}', 1, '{"a":1}', 'c1')`)
+        await expect(db.execute(`insert into site_config_revisions (id, site_id, version, data, checksum)
+          values (gen_random_uuid(), '${site.siteId}', 1, '{"a":2}', 'c2')`)).rejects.toThrow()
+      } finally {
+        await db.execute(`delete from site_config_revisions where site_id = '${site.siteId}'`)
+        await site.cleanup()
+      }
+    })
   })
 })
diff --git a/tests/integration/db.source.test.ts b/tests/integration/db.source.test.ts
index 324eb2f..a76564b 100644
--- a/tests/integration/db.source.test.ts
+++ b/tests/integration/db.source.test.ts
@@ -1,19 +1,18 @@
 // 来源域集成测试：快照不可变触发器（UPDATE/DELETE 拒绝）+ 三处唯一约束在真 PG 上生效。
-// 生命周期纪律：随机后缀插入 + finally 反序清理，可重复运行不残留脏数据。
-// 注意：source_snapshots 不可变触发器连 DELETE 也拒——清理时先 DISABLE 该触发器再删行后 ENABLE
+// Task 13 起夹具走公共 helpers（createSiteFixture/withImmutableCleanup/withTestDb/rejectionMessage）；
+// 生命周期纪律不变：随机后缀插入 + finally 反序清理，可重复运行不残留脏数据。
+// 注意：source_snapshots 不可变触发器连 DELETE 也拒——清场走 withImmutableCleanup
 // （不可变表的生产语义是永不删；测试清场是唯一例外，走显式 DDL 开关且删除限定本站点行）。
 import { describe, it, expect } from 'vitest'
-import { getDb } from '../../apps/api/src/db/client.js'
+import { createSiteFixture, withImmutableCleanup, withTestDb, rejectionMessage, type Db } from './helpers.js'
 
-type Db = ReturnType<typeof getDb>
 type Fixture = { siteId: string; connectionId: string; snapshotId: string; sha256: string; idempotencyKey: string }
 
 // 建链（FK 依赖顺序）：site → source_connection → source_snapshot → import_job
 async function setupSourceFixture(db: Db): Promise<Fixture> {
-  const rand = `${Date.now()}-${Math.random().toString(36).slice(2, 8)}`
-  const site = (await db.execute(`insert into sites (id, key, name, default_locale, production_origin)
-    values (gen_random_uuid(), 'src-${rand}', 'SrcFixture', 'en', 'https://src.example') returning id`)) as any
-  const siteId = site[0].id
+  const site = await createSiteFixture(db, 'src')
+  const rand = site.rand
+  const siteId = site.siteId
   const conn = (await db.execute(`insert into source_connections (id, site_id, kind, name, configuration)
     values (gen_random_uuid(), '${siteId}', 'wxr', 'conn-${rand}', '{}') returning id`)) as any
   const connectionId = conn[0].id
@@ -24,40 +23,24 @@ async function setupSourceFixture(db: Db): Promise<Fixture> {
   return { siteId, connectionId, snapshotId: snap[0].id, sha256: snap[0].sha256, idempotencyKey: job[0].idempotency_key }
 }
 
-// 反序清理：子表常规删除；快照表临时 DISABLE 不可变触发器；最后删 site。
+// 反序清理：子表常规删除；快照表不可变，清场走 DISABLE→删→ENABLE 封装；最后删 site。
 async function cleanupSourceFixture(db: Db, f: Fixture) {
   await db.execute(`delete from source_records where site_id = '${f.siteId}'`)
   await db.execute(`delete from import_jobs where site_id = '${f.siteId}'`)
-  await db.execute(`alter table source_snapshots disable trigger source_snapshots_immutable`)
-  try {
-    await db.execute(`delete from source_snapshots where site_id = '${f.siteId}'`)
-  } finally {
-    await db.execute(`alter table source_snapshots enable trigger source_snapshots_immutable`)
-  }
+  await withImmutableCleanup(db, 'source_snapshots', 'source_snapshots_immutable', `site_id = '${f.siteId}'`)
   await db.execute(`delete from source_connections where site_id = '${f.siteId}'`)
   await db.execute(`delete from sites where id = '${f.siteId}'`)
 }
 
 async function withSourceFixture(fn: (db: Db, f: Fixture) => Promise<void>) {
-  const db = getDb()
-  const f = await setupSourceFixture(db)
-  try {
-    await fn(db, f)
-  } finally {
-    await cleanupSourceFixture(db, f)
-    await (db as any).$client.end()
-  }
-}
-
-// drizzle 会把 PostgresError 包成 DrizzleQueryError（message 只有 "Failed query: ..."），
-// 服务端原始错误文本在 cause 里——断言触发器/约束身份时必须看 cause。
-async function rejectionMessage(db: Db, query: string): Promise<string> {
-  try {
-    await db.execute(query)
-  } catch (e: any) {
-    return String(e?.cause?.message ?? e?.message ?? e)
-  }
-  throw new Error(`expected query to be rejected: ${query}`)
+  await withTestDb(async (db) => {
+    const f = await setupSourceFixture(db)
+    try {
+      await fn(db, f)
+    } finally {
+      await cleanupSourceFixture(db, f)
+    }
+  })
 }
 
 describe('来源域约束', () => {
diff --git a/tests/integration/db.taxonomy.test.ts b/tests/integration/db.taxonomy.test.ts
index 63f16cf..368af60 100644
--- a/tests/integration/db.taxonomy.test.ts
+++ b/tests/integration/db.taxonomy.test.ts
@@ -1,12 +1,12 @@
 // 分类域集成测试：taxonomies 三元组唯一（换 object_type 放行对照——同 key 服务不同对象类型是合法的，
 // 如 post 与 product 各挂一套 category）+ terms 来源身份唯一 + content_terms 复合主键 +
 // terms.parent_term_id 自引用 FK + is_primary 布尔列（Yoast 主分类）。
-// 生命周期纪律：随机后缀插入 + finally 反序清理，可重复运行不残留脏数据（本域无不可变表，常规删除即可；
+// Task 13 起夹具走公共 helpers（createSiteFixture/withTestDb/rejectionMessage）；
+// 生命周期纪律不变：随机后缀插入 + finally 反序清理（本域无不可变表，常规删除即可；
 // content_terms 依赖 content_entries，fixture 建链照 Task 8 模式只建到 entry 即可）。
 import { describe, it, expect } from 'vitest'
-import { getDb } from '../../apps/api/src/db/client.js'
+import { createSiteFixture, withTestDb, rejectionMessage, type Db } from './helpers.js'
 
-type Db = ReturnType<typeof getDb>
 type Fixture = {
   siteId: string
   entryId: string
@@ -17,10 +17,9 @@ type Fixture = {
 
 // 建链（FK 依赖顺序）：site → content_entry → taxonomy → term（默认无 parent，层级在各测试内自建）。
 async function setupTaxonomyFixture(db: Db): Promise<Fixture> {
-  const rand = `${Date.now()}-${Math.random().toString(36).slice(2, 8)}`
-  const site = (await db.execute(`insert into sites (id, key, name, default_locale, production_origin)
-    values (gen_random_uuid(), 'tax-${rand}', 'TaxFixture', 'en', 'https://tax.example') returning id`)) as any
-  const siteId = site[0].id
+  const site = await createSiteFixture(db, 'tax')
+  const rand = site.rand
+  const siteId = site.siteId
   const entry = (await db.execute(`insert into content_entries (id, site_id, type_key, lifecycle_status)
     values (gen_random_uuid(), '${siteId}', 'post', 'active') returning id`)) as any
   const tax = (await db.execute(`insert into taxonomies (id, site_id, key, object_type, public_base_path)
@@ -47,25 +46,14 @@ async function cleanupTaxonomyFixture(db: Db, f: Fixture) {
 }
 
 async function withTaxonomyFixture(fn: (db: Db, f: Fixture) => Promise<void>) {
-  const db = getDb()
-  const f = await setupTaxonomyFixture(db)
-  try {
-    await fn(db, f)
-  } finally {
-    await cleanupTaxonomyFixture(db, f)
-    await (db as any).$client.end()
-  }
-}
-
-// drizzle 会把 PostgresError 包成 DrizzleQueryError（message 只有 "Failed query: ..."），
-// 服务端原始错误文本在 cause 里——断言约束身份时必须看 cause。
-async function rejectionMessage(db: Db, query: string): Promise<string> {
-  try {
-    await db.execute(query)
-  } catch (e: any) {
-    return String(e?.cause?.message ?? e?.message ?? e)
-  }
-  throw new Error(`expected query to be rejected: ${query}`)
+  await withTestDb(async (db) => {
+    const f = await setupTaxonomyFixture(db)
+    try {
+      await fn(db, f)
+    } finally {
+      await cleanupTaxonomyFixture(db, f)
+    }
+  })
 }
 
 describe('分类域约束', () => {
diff --git a/tests/integration/global-setup.ts b/tests/integration/global-setup.ts
new file mode 100644
index 0000000..42ae1d1
--- /dev/null
+++ b/tests/integration/global-setup.ts
@@ -0,0 +1,42 @@
+// vitest globalSetup（Task 13）：每次测试运行用完好的空临时库，结束即删——
+// 彻底消除"测试碰开发库"与"清场残留"两类问题。
+// 机制：用开发库凭据连维护库（postgres）CREATE DATABASE sf_test_<ts> →
+// 用 drizzle-orm 程序化迁移器对临时库跑 apps/api/drizzle 全量迁移 →
+// 设 process.env.DATABASE_URL_TEST（getDb() 的 DATABASE_URL_TEST ?? DATABASE_URL
+// 回退链让所有测试自动连临时库；worker 由主进程在 setup 之后派生，env 继承生效）。
+// 导出形式注意：vitest 的 globalSetup 加载器在有 default 导出时不捕获具名 teardown
+// （loadGlobalSetupFile 的 if/default 分支只取 default 作 setup），故这里必须
+// 用具名 setup + teardown 双导出、不写 default——teardown 才会被注册并在收尾执行。
+// teardown DROP DATABASE 用 WITH (FORCE) 先断开残余业务连接再删；setup 中途失败也自清。
+import { requireDatabaseUrl } from '../../apps/api/src/db/env.js'
+import { createDatabase, dropDatabase, migrateDatabase } from '../../apps/api/src/db/migrate.js'
+
+let created: { adminUrl: string; name: string } | undefined
+
+export async function setup(): Promise<void> {
+  // 只认 DATABASE_URL（开发库凭据）——即便环境里残留 DATABASE_URL_TEST 也不受影响
+  const devUrl = requireDatabaseUrl({ allowTestUrl: false })
+  const adminUrl = new URL(devUrl)
+  adminUrl.pathname = '/postgres' // CREATE/DROP DATABASE 须在维护库会话里执行
+  const name = `sf_test_${Date.now()}`
+  const testUrl = new URL(devUrl)
+  testUrl.pathname = `/${name}`
+
+  await createDatabase(adminUrl.toString(), name)
+  try {
+    await migrateDatabase(testUrl.toString())
+  } catch (e) {
+    // 迁移半途而废：立即清掉本次临时库再抛出，失败运行也不留残留
+    await dropDatabase(adminUrl.toString(), name)
+    throw e
+  }
+  process.env.DATABASE_URL_TEST = testUrl.toString()
+  created = { adminUrl: adminUrl.toString(), name }
+}
+
+export async function teardown(): Promise<void> {
+  if (!created) return
+  const { adminUrl, name } = created
+  created = undefined
+  await dropDatabase(adminUrl, name)
+}
diff --git a/tests/integration/helpers.ts b/tests/integration/helpers.ts
new file mode 100644
index 0000000..72badec
--- /dev/null
+++ b/tests/integration/helpers.ts
@@ -0,0 +1,69 @@
+// 集成测试公共夹具（Task 13 收敛）：Task 6–12 七个域测试文件的内联重复件抽此共享。
+// 收敛纪律：只抽"每个文件逐字重复"的实现——随机后缀、建 site、不可变表清场开关、
+// 拒绝断言解包、连接生命周期；各文件的断言、对照组、清场范围与顺序保持不变。
+import { getDb } from '../../apps/api/src/db/client.js'
+
+export type Db = ReturnType<typeof getDb>
+
+/** 随机后缀：毫秒时间戳 + 6 位随机，同毫秒并发行也可区分；所有 fixture 的唯一性来源。 */
+export function rand(): string {
+  return `${Date.now()}-${Math.random().toString(36).slice(2, 8)}`
+}
+
+// drizzle 会把 PostgresError 包成 DrizzleQueryError（message 只有 "Failed query: ..."），
+// 服务端原始错误文本在 cause 里——断言触发器/约束/枚举身份时必须看 cause。
+export async function rejectionMessage(db: Db, query: string): Promise<string> {
+  try {
+    await db.execute(query)
+  } catch (e: any) {
+    return String(e?.cause?.message ?? e?.message ?? e)
+  }
+  throw new Error(`expected query to be rejected: ${query}`)
+}
+
+/**
+ * 站点夹具：随机 key 建 site，返回 id + 清理句柄。
+ * 清理句柄只删 site 行——调用方必须先删完该站点的子表行再调用（FK 依赖顺序由各域自查）。
+ * name/origin 是不参与任何断言的装饰列，统一按 prefix 派生。
+ */
+export type SiteFixture = { siteId: string; key: string; rand: string; cleanup: () => Promise<void> }
+
+export async function createSiteFixture(db: Db, prefix: string): Promise<SiteFixture> {
+  const r = rand()
+  const key = `${prefix}-${r}`
+  const site = (await db.execute(`insert into sites (id, key, name, default_locale, production_origin)
+    values (gen_random_uuid(), '${key}', '${prefix} fixture', 'en', 'https://${prefix}.example') returning id`)) as any
+  const siteId = site[0].id
+  return {
+    siteId,
+    key,
+    rand: r,
+    cleanup: async () => {
+      await db.execute(`delete from sites where id = '${siteId}'`)
+    },
+  }
+}
+
+/**
+ * 不可变表清场封装：DISABLE 触发器 → 删行 → ENABLE（嵌套 finally 保证触发器必然恢复）。
+ * 不可变表的生产语义是永不删；测试清场是唯一例外，删除范围由调用方谓词圈定。
+ * @param where 完整 WHERE 谓词（域测试按 site_id 圈；audit_logs 组织级行按 command_id 圈）
+ */
+export async function withImmutableCleanup(db: Db, table: string, trigger: string, where: string): Promise<void> {
+  await db.execute(`alter table ${table} disable trigger ${trigger}`)
+  try {
+    await db.execute(`delete from ${table} where ${where}`)
+  } finally {
+    await db.execute(`alter table ${table} enable trigger ${trigger}`)
+  }
+}
+
+/** 连接生命周期封装：每个测试持有独立 getDb 池，结束必关（清场先于关池执行）。 */
+export async function withTestDb(fn: (db: Db) => Promise<void>): Promise<void> {
+  const db = getDb()
+  try {
+    await fn(db)
+  } finally {
+    await (db as any).$client.end()
+  }
+}
diff --git a/vitest.config.ts b/vitest.config.ts
index f0ca422..b5fd956 100644
--- a/vitest.config.ts
+++ b/vitest.config.ts
@@ -2,6 +2,9 @@ import { defineConfig } from 'vitest/config'
 export default defineConfig({
   test: {
     include: ['tests/**/*.test.ts', 'packages/*/test/**/*.test.ts', 'apps/*/test/**/*.test.ts'],
+    // 集成测试库供给（Task 13）：setup 建 sf_test_<ts> 临时库并全量迁移，
+    // 设 DATABASE_URL_TEST 让所有 getDb() 自动指过去；teardown 负责 DROP。
+    globalSetup: ['tests/integration/global-setup.ts'],
     testTimeout: 30000,
     // 集成测试共库且清场会做全局态变更（不可变表 DISABLE/ENABLE TRIGGER 是库级 DDL，
     // 对所有会话可见）：文件级并行时 A 文件清场窗口会与 B 文件的不可变断言竞态（实测