Fix CI failures: missing lockfile, ESLint v9 flat config migration, lint errors

.github/workflows/ci.yml

@@ -0,0 +1,60 @@
+name: CI
+
+on:
+  push:
+    branches: [main]
+  pull_request:
+    branches: [main]
+
+permissions:
+  contents: read
+
+jobs:
+  unit-tests:
+    name: Unit & Integration Tests
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Type check
+        run: npx tsc --noEmit
+
+      - name: Lint
+        run: npx eslint src tests
+
+      - name: Run unit & integration tests
+        run: npx vitest --run
+
+  e2e-tests:
+    name: E2E Tests
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Install Playwright browsers
+        run: npx playwright install --with-deps chromium
+
+      - name: Run E2E tests against live site
+        run: npx playwright test --config=playwright.ci.config.ts
+
+      - name: Upload test results
+        uses: actions/upload-artifact@v4
+        if: ${{ !cancelled() }}
+        with:
+          name: playwright-report
+          path: playwright-report/
+          retention-days: 14

.gitignore

@@ -1,6 +1,5 @@
 # Dependencies
 node_modules
-package-lock.json
 
 # Build outputs
 dist

eslint.config.js

@@ -0,0 +1,53 @@
+import js from '@eslint/js';
+import tseslint from 'typescript-eslint';
+import reactPlugin from 'eslint-plugin-react';
+import reactHooksPlugin from 'eslint-plugin-react-hooks';
+import reactRefreshPlugin from 'eslint-plugin-react-refresh';
+import globals from 'globals';
+
+export default tseslint.config(
+  { ignores: ['dist', 'node_modules'] },
+  js.configs.recommended,
+  ...tseslint.configs.recommended,
+  {
+    files: ['**/*.{ts,tsx}'],
+    plugins: {
+      react: reactPlugin,
+      'react-hooks': reactHooksPlugin,
+      'react-refresh': reactRefreshPlugin,
+    },
+    languageOptions: {
+      globals: {
+        ...globals.browser,
+        ...globals.es2020,
+      },
+    },
+    settings: {
+      react: {
+        version: 'detect',
+      },
+    },
+    rules: {
+      ...reactPlugin.configs.recommended.rules,
+      ...reactHooksPlugin.configs.recommended.rules,
+      'react/react-in-jsx-scope': 'off',
+      'react/prop-types': 'off',
+      'react-refresh/only-export-components': [
+        'warn',
+        { allowConstantExport: true },
+      ],
+      '@typescript-eslint/no-explicit-any': [
+        'warn',
+        { ignoreRestArgs: true },
+      ],
+      '@typescript-eslint/no-unused-vars': [
+        'error',
+        { argsIgnorePattern: '^_', varsIgnorePattern: '^_', caughtErrorsIgnorePattern: '^_' },
+      ],
+      'no-console': [
+        'warn',
+        { allow: ['warn', 'error'] },
+      ],
+    },
+  },
+);