diff --git a/README.md b/README.md
index 9dc171b0f..e4c6e5bb3 100644
--- a/README.md
+++ b/README.md
@@ -75,6 +75,7 @@ pnpm check:ci
 pnpm check:env
 pnpm check:secrets
 pnpm check:metadata
+pnpm check:tests
 pnpm test:helpers
 pnpm check:artifacts
 pnpm check:quality
diff --git a/docs/operations.md b/docs/operations.md
index 1b188323f..7747c3b53 100644
--- a/docs/operations.md
+++ b/docs/operations.md
@@ -12,6 +12,7 @@ pnpm check:ci
 pnpm check:env
 pnpm check:secrets
 pnpm check:metadata
+pnpm check:tests
 pnpm test:helpers
 pnpm exec tsc --noEmit --pretty false
 git diff --check
@@ -31,7 +32,7 @@ pnpm check:quality
 
 ## CI
 
-`.github/workflows/lint.yml` 是基础质量门禁，运行 `pnpm check:quality`，负责 lint、日志治理、公开交付面品牌治理、CI hygiene、环境变量示例卫生、secret hygiene、package metadata、轻量 helper 回归测试、类型检查、diff hygiene 和 tracked 污染物检查。
+`.github/workflows/lint.yml` 是基础质量门禁，运行 `pnpm check:quality`，负责 lint、日志治理、公开交付面品牌治理、CI hygiene、环境变量示例卫生、secret hygiene、package metadata、测试门禁卫生、轻量 helper 回归测试、类型检查、diff hygiene 和 tracked 污染物检查。
 
 CI 和本地提交前检查复用同一个入口，避免规则漂移。
 
@@ -98,9 +99,12 @@ pnpm check:metadata
 ## 轻量 Helper 回归
 
 ```bash
+pnpm check:tests
 pnpm test:helpers
 ```
 
+`pnpm check:tests` 会确认轻量 helper 测试仍然使用 no-server 配置、只匹配纯 helper 测试，并且保留在 `pnpm check:quality` 里。
+
 `pnpm test:helpers` 使用 `playwright.helpers.config.ts` 运行不需要浏览器和 Next dev server 的纯 helper 测试，当前覆盖 Canvas chat/detail/upload helper 的关键行为。它已纳入 `pnpm check:quality`，和完整 Playwright e2e 分开，避免基础门禁被数据库、浏览器和登录态拖慢。
 
 ## 首页性能烟测
diff --git a/docs/release-readiness.md b/docs/release-readiness.md
index f47d2dd05..2c2866787 100644
--- a/docs/release-readiness.md
+++ b/docs/release-readiness.md
@@ -13,7 +13,7 @@ SMOKE_BASE_URL=http://127.0.0.1:3001 pnpm smoke:routes
 
 预期：
 
-- `pnpm check:quality` 通过 lint、日志脱敏门禁、公开交付面品牌治理、CI hygiene、环境变量示例卫生、secret hygiene、package metadata、轻量 helper 回归测试、类型检查、diff hygiene 和 tracked 污染物检查。
+- `pnpm check:quality` 通过 lint、日志脱敏门禁、公开交付面品牌治理、CI hygiene、环境变量示例卫生、secret hygiene、package metadata、测试门禁卫生、轻量 helper 回归测试、类型检查、diff hygiene 和 tracked 污染物检查。
 - `pnpm smoke:routes` 验证 `/` 返回 200。
 - `/classic` 和 `/chat/test-id` 重定向到 `/`。
 - `/settings` 未登录重定向到 `/login?callbackUrl=%2Fsettings`。
diff --git a/package.json b/package.json
index bc64e7918..0133eee3e 100644
--- a/package.json
+++ b/package.json
@@ -23,8 +23,9 @@
     "check:env": "node scripts/check-env-example.mjs",
     "check:secrets": "node scripts/check-secrets.mjs",
     "check:metadata": "node scripts/check-package-metadata.mjs",
+    "check:tests": "node scripts/check-test-hygiene.mjs",
     "test:helpers": "PLAYWRIGHT=True pnpm exec playwright test --config=playwright.helpers.config.ts",
-    "check:quality": "pnpm lint && pnpm check:logs && pnpm check:brand && pnpm check:ci && pnpm check:env && pnpm check:secrets && pnpm check:metadata && pnpm test:helpers && pnpm exec tsc --noEmit --pretty false && git diff --check && pnpm check:artifacts",
+    "check:quality": "pnpm lint && pnpm check:logs && pnpm check:brand && pnpm check:ci && pnpm check:env && pnpm check:secrets && pnpm check:metadata && pnpm check:tests && pnpm test:helpers && pnpm exec tsc --noEmit --pretty false && git diff --check && pnpm check:artifacts",
     "clean:artifacts": "node scripts/clean-local-artifacts.mjs",
     "smoke:routes": "node scripts/smoke-routes.mjs",
     "format": "pnpm exec ultracite fix",
diff --git a/scripts/check-test-hygiene.mjs b/scripts/check-test-hygiene.mjs
new file mode 100644
index 000000000..b2ac67809
--- /dev/null
+++ b/scripts/check-test-hygiene.mjs
@@ -0,0 +1,44 @@
+#!/usr/bin/env node
+
+import { readFileSync } from "node:fs";
+
+const packageJson = JSON.parse(readFileSync("package.json", "utf8"));
+const helpersConfig = readFileSync("playwright.helpers.config.ts", "utf8");
+const violations = [];
+
+const expectIncludes = (source, expected, reason) => {
+  if (!source.includes(expected)) {
+    violations.push(`missing ${reason}: ${expected}`);
+  }
+};
+
+const expectNotIncludes = (source, forbidden, reason) => {
+  if (source.includes(forbidden)) {
+    violations.push(`unexpected ${reason}: ${forbidden}`);
+  }
+};
+
+const testHelpersScript = packageJson.scripts?.["test:helpers"] ?? "";
+const qualityScript = packageJson.scripts?.["check:quality"] ?? "";
+
+expectIncludes(testHelpersScript, "PLAYWRIGHT=True", "Playwright test env flag");
+expectIncludes(testHelpersScript, "playwright test --config=playwright.helpers.config.ts", "dedicated helper Playwright config");
+expectIncludes(qualityScript, "pnpm test:helpers", "helper tests in quality gate");
+
+expectIncludes(helpersConfig, 'testDir: "./tests"', "tests directory");
+expectIncludes(helpersConfig, "testMatch: /routes\\/canvas-chat-helpers\\.test\\.ts/", "single pure helper test target");
+expectIncludes(helpersConfig, 'reporter: process.env.CI ? "github" : "list"', "fast non-html reporter");
+expectIncludes(helpersConfig, "timeout: 60 * 1000", "bounded helper test timeout");
+
+expectNotIncludes(helpersConfig, "webServer", "Next dev server in helper tests");
+expectNotIncludes(helpersConfig, "devices[", "browser device dependency in helper tests");
+expectNotIncludes(helpersConfig, "projects:", "multi-project helper test expansion");
+expectNotIncludes(helpersConfig, "testMatch: /e2e", "e2e tests in helper gate");
+
+if (violations.length > 0) {
+  console.error("Test hygiene check failed. Keep helper tests fast, no-server, and wired into check:quality.");
+  console.error(violations.join("\n"));
+  process.exit(1);
+}
+
+console.log("Test hygiene check passed.");