chore: standardize CI/CD workflows

- Add ESLint + Prettier to site/
- Add .github/workflows/ci.yml (lint + build on PRs)
- Rename pages.yml to deploy.yml
- Add npm lint/lint:fix/format/format:check scripts
- Fix missing L (Leaflet) import in cross-links.js caught by eslint

Affects: bassin-minier-unesco

See MAINTENANCE_PLAN/02-CICD-WORKFLOWS.md

Author: rlespinasse

.github/workflows/ci.yml

@@ -0,0 +1,28 @@
+name: CI
+
+on:
+  pull_request:
+  push:
+    branches-ignore:
+      - main
+
+permissions:
+  contents: read
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+    steps:
+      - uses: actions/checkout@9c091bb21b7c1c1d1991bb908d89e4e9dddfe3e0 # v7.0.0
+      - uses: actions/setup-node@820762786026740c76f36085b0efc47a31fe5020 # v7.0.0
+        with:
+          node-version: 22
+          cache: npm
+          cache-dependency-path: site/package-lock.json
+      - run: npm ci
+        working-directory: site
+      - run: npm run lint
+        working-directory: site
+      - run: npm run build
+        working-directory: site

.github/workflows/pages.yml .github/workflows/deploy.yml.github/workflows/pages.yml renamed to .github/workflows/deploy.yml

@@ -0,0 +1,7 @@
+{
+  "semi": true,
+  "singleQuote": true,
+  "trailingComma": "es5",
+  "printWidth": 100,
+  "tabWidth": 2
+}

site/.prettierrc.json

@@ -0,0 +1,36 @@
+import js from '@eslint/js';
+import prettier from 'eslint-plugin-prettier';
+import globals from 'globals';
+
+export default [
+  { ignores: ['dist/**'] },
+  js.configs.recommended,
+  {
+    files: ['src/**/*.js'],
+    languageOptions: {
+      ecmaVersion: 2022,
+      sourceType: 'module',
+      globals: {
+        ...globals.browser,
+      },
+    },
+    plugins: {
+      prettier: prettier,
+    },
+    rules: {
+      'prettier/prettier': 'warn',
+      'no-unused-vars': ['warn', { argsIgnorePattern: '^_' }],
+      'no-console': 'warn',
+    },
+  },
+  {
+    files: ['vite.config.js'],
+    languageOptions: {
+      ecmaVersion: 2022,
+      sourceType: 'module',
+      globals: {
+        ...globals.node,
+      },
+    },
+  },
+];