chore: enable lint in pre-commit, use English comments and UI labels

- Add lint script and lint-staged config in package.json
- Pre-commit uses --config package.json to avoid legacy linters config
- Remove .lintstagedrc (config moved to package.json)
- Fix ESLint no-unused-vars in src/nodes/er.ts
- Use English comments and tooltips in viewer and viewMode

Co-authored-by: Cursor <cursoragent@cursor.com>

Author: alswl

.husky/pre-commit

@@ -1 +1 @@
-npx --no-install lint-staged --quiet
+npx --no-install lint-staged --config package.json --quiet

.lintstagedrc

@@ -7,6 +7,7 @@
     "dev": "max dev",
     "format": "prettier --cache --write .",
     "postinstall": "max setup",
+    "lint": "max lint",
     "prepare": "husky",
     "setup": "max setup",
     "start": "npm run dev",
@@ -17,6 +18,23 @@
     "test:e2e:ui": "playwright test --ui",
     "test:watch": "jest --watch"
   },
+  "lint-staged": {
+    "*.{md,json}": [
+      "prettier --cache --write"
+    ],
+    "*.{js,jsx}": [
+      "max lint --fix --eslint-only",
+      "prettier --cache --write"
+    ],
+    "*.{css,less}": [
+      "max lint --fix --stylelint-only",
+      "prettier --cache --write"
+    ],
+    "*.{ts,tsx}": [
+      "max lint --fix --eslint-only",
+      "prettier --cache --write"
+    ]
+  },
   "dependencies": {
     "@ant-design/icons": "^5.0.1",
     "@ant-design/pro-components": "^2.4.4",