feat(testing): add unified quality gates and coverage baseline

scripts/README.md

@@ -26,6 +26,7 @@
   - 例如：
     - `test_real_host_scripts.sh`
     - `test_tksea_portal_assets.sh`
+    - `verify_quality_gates.sh`
 
 ## 放置规则
 
@@ -38,6 +39,20 @@
 ```bash
 bash ./scripts/test/test_real_host_scripts.sh
 bash ./scripts/test/test_tksea_portal_assets.sh
+bash ./scripts/test/verify_quality_gates.sh
 scripts/deploy/build_local_image.sh
 bash ./scripts/acceptance/real_host_acceptance.sh
 ```
+
+## 统一质量门禁
+
+`scripts/test/verify_quality_gates.sh` 是当前推荐的一键测试入口，职责是：
+
+- 统一执行：
+  - `gofmt -l .`
+  - `go vet ./...`
+  - `go test -cover ./internal/...`
+  - `go test ./tests/integration/... -count=1`
+- 读取 `tests/quality/coverage_thresholds.tsv`
+- 输出 coverage gate 报告到临时目录
+- 对 core 包覆盖率做硬门槛，对 watch 包做显式告警