test(quality): promote internal app coverage to core gate

docs/EXECUTION_BOARD.md

@@ -1931,3 +1931,39 @@
 - 这轮没有继续加新测试脚本，而是直接补最短路径的 handler 级测试缺口
 - `internal/app` 已不再卡在 `70%` 以下
 - 下一步测试治理可以开始从“抬单包覆盖率”转向“按包把 `watch` 升级为 `core`”
+
+## 2026-05-30 已将 internal/app 从 watch 提升为 core
+
+**目标**：把刚刚抬过 `70%` 的 `internal/app` 从“显式观察”提升为“硬门槛”，避免后续 HTTP 控制面回归时只产生告警不阻断
+
+**本次调整**：
+
+- `tests/quality/coverage_thresholds.tsv`
+  - `internal/app`
+    - tier：`watch -> core`
+    - threshold：`69.5 -> 70.0`
+
+**验证结果**：
+
+- `bash ./scripts/test/verify_quality_gates.sh` => `PASS`
+- 统一门禁回读：
+  - `internal/app` = `71.5%`
+  - 高于新的 `core` 门槛 `70.0%`
+- 同轮基础门禁保持通过：
+  - `gofmt -l .`
+  - `go vet ./...`
+  - `go test -cover ./internal/...`
+  - `go test ./tests/integration/... -count=1`
+
+**结论**：
+
+- `internal/app` 已完成第一批 `watch -> core` 升级
+- 当前 `core` 包集合变为：
+  - `internal/access`
+  - `internal/pack`
+  - `internal/provision`
+  - `internal/app`
+- 后续可继续按同样方法评估：
+  - `internal/routing`
+  - `internal/store/sqlite`
+  - `internal/overlay`

tests/quality/coverage_thresholds.tsv

@@ -2,7 +2,7 @@
 internal/access	core	70.0	core access closure logic
 internal/pack	core	70.0	pack loading and validation
 internal/provision	core	70.0	provider import orchestration
-internal/app	watch	69.5	large HTTP surface; keep explicit non-regression until more handler tests land
+internal/app	core	70.0	HTTP control plane is now above 70 and must stay as a hard gate
 internal/overlay	watch	70.0	utility package should stay above a healthy baseline
 internal/routing	watch	70.0	route resolve and sticky runtime should not regress
 internal/store/sqlite	watch	75.0	sqlite repo layer is high leverage and should stay well-covered