diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index e5e0ba0..ff5ed50 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -11,10 +11,17 @@ repos:
     hooks:
       - id: check-format
         name: Check Ruff formatting
-        entry: ruff format --check .
+        entry: pdm run format:check
         language: system
         files: ^(.*\.py|pyproject\.toml|ruff\.toml)$
-        exclude: ^(cli/|\.agents/)
+        exclude: ^(cli/|\.agents/|tasks/)
+        pass_filenames: false
+      - id: check-lint
+        name: Check Ruff lint
+        entry: pdm run lint
+        language: system
+        files: ^(.*\.py|pyproject\.toml|ruff\.toml|\.pre-commit-config\.yaml)$
+        exclude: ^(cli/|\.agents/|tasks/)
         pass_filenames: false
       - id: typecheck
         name: Check Pyrefly types
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index feae76b..1578d01 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -16,6 +16,7 @@ bugs that do not cross a security boundary.
 ```bash
 git submodule update --init --recursive
 pdm install -G dev --frozen-lockfile
+pdm run pre-commit install
 pdm run doctor
 pdm run check
 ```
@@ -23,6 +24,10 @@ pdm run check
 `.python-version` is the shared Python runtime anchor. CI installs PDM 2.28.0, and
 `doctor` reports a mismatch when the local toolchain does not match that contract.
 
+Git hook 需要在每个本地 checkout 安装；提交前会执行与 CI 相同的格式和 lint 入口。
+移动仓库目录后，需要重建含旧绝对路径的虚拟环境入口并重新安装 hook；CI 的完整
+`check` 仍是交付检查依据。
+
 `check` is the same hermetic repository gate used by CI. It verifies the lock and
 requirements export, migration configuration and append-only baseline, Ruff formatting,
 repository lint, and static types. Use narrower commands while iterating:
diff --git a/docs/40-deployment/development-environment.md b/docs/40-deployment/development-environment.md
index fda0d52..42dcbd3 100644
--- a/docs/40-deployment/development-environment.md
+++ b/docs/40-deployment/development-environment.md
@@ -103,6 +103,8 @@ pdm run dev
 repository contract checks tool versions, lock/export consistency, migration integrity,
 formatting, lint, settings isolation, and the complete unit-test suite.
 
+格式与 lint 的范围由 `ruff.toml` 拥有，覆盖正式源码、测试与脚本。`tasks/` 是临时实验材料，`.agents/` 是独立维护的技能；二者不参与产品门禁。成为正式验证步骤的实验应迁入 `scripts/` 或 `tests/`。已发布迁移保持不可变；独立 CLI 使用 `pdm run --project cli check` 及自己的 CI。pre-commit 的格式与 lint 钩子复用 `pdm run format:check` 和 `pdm run lint`，CI 的完整入口仍为 `pdm run check`。
+
 Use narrower read-only checks while iterating:
 
 ```bash
diff --git a/ruff.toml b/ruff.toml
index 8029742..d1b4b67 100644
--- a/ruff.toml
+++ b/ruff.toml
@@ -1,6 +1,7 @@
 line-length = 92
 indent-width = 2
-extend-exclude = ["migrations/versions", "*.md", "cli", ".agents"]
+# Task probes are disposable evidence; maintained checks belong in scripts/ or tests/.
+extend-exclude = ["migrations/versions", "*.md", "cli", ".agents", "tasks"]
 
 [format]
 indent-style = "space"