update: add ruff lint

Author: ifooth

root/.config/ruff/pyproject.toml

@@ -0,0 +1,13 @@
+# 最大行宽，超过则触发 E501
+# 119 = GitHub/GitLab 代码审查页面不折行的最大宽度，也是 Django 社区常用值
+# 对比: PEP 8 标准 79, Black 默认 88
+line-length = 119
+
+[lint]
+  # 启用的规则集，与 VS Code ruff 扩展配置保持一致
+  # C - mccabe 复杂度检查（如 C901: 函数圈复杂度超过阈值）
+  # E - pycodestyle 错误（如 E501: 行过长, E401: 多个 import 写在一行）
+  # F - pyflakes 检查（如 F401: 未使用的 import, F841: 未使用的变量）
+  # I - isort import 排序（如 I001: import 顺序不正确, I002: 缺少 __future__ import）
+  # W - pycodestyle 警告（如 W291: 行尾多余空格, W605: 无效转义序列）
+  select = ["C", "E", "F", "I", "W"]

root/.config/ruff/ruff.toml

@@ -8,26 +8,27 @@
     "[python]": {
         "editor.formatOnSave": true,
         "editor.codeActionsOnSave": {
-            "source.fixAll": "explicit",
-            "source.organizeImports": "explicit"
+            "source.organizeImports.ruff": "explicit"
         },
         "editor.defaultFormatter": "charliermarsh.ruff"
     },
     "python.venvPath": "~/.venv",
     "python.terminal.activateEnvironment": false,
-    "notebook.formatOnSave.enabled": true,
-    "notebook.codeActionsOnSave": {
-        "notebook.source.fixAll": "explicit",
-        "notebook.source.organizeImports": "explicit"
-    },
+    "ruff.lint.enable": true,
     "ruff.nativeServer": "on",
     "ruff.lineLength": 119,
     "ruff.lint.select": [
         "C",
         "E",
         "F",
+        "I",
         "W"
     ],
+    "notebook.formatOnSave.enabled": true,
+    "notebook.codeActionsOnSave": {
+        "notebook.source.fixAll": "explicit",
+        "notebook.source.organizeImports": "explicit"
+    },
     "clang-format.style": "{IndentWidth: 4, BasedOnStyle: google, AlignConsecutiveAssignments: true, ColumnLimit: 0}",
     "git.ignoredRepositories": [
         "/opt"