feat: add initial implementation of Kitchen CRM with authentication and dashboard features

- Create global styles and theme management
- Implement app shell layout with sidebar navigation
- Add authentication layout and pages for login and registration
- Develop dashboard page with placeholder content
- Introduce routing guards for guest-only and authenticated routes
- Set up Zustand for state management of authentication and theme
- Create API types and structures for CRM entities
- Configure Vite with PWA support and Tailwind CSS

frontend/eslint.config.js

@@ -0,0 +1,58 @@
+import js from '@eslint/js'
+import globals from 'globals'
+import reactHooks from 'eslint-plugin-react-hooks'
+import reactRefresh from 'eslint-plugin-react-refresh'
+import simpleImportSort from 'eslint-plugin-simple-import-sort'
+import tailwindcss from 'eslint-plugin-tailwindcss'
+import tseslint from 'typescript-eslint'
+import { defineConfig } from 'eslint/config'
+
+const tsconfigRootDir = new URL('.', import.meta.url).pathname
+
+export default defineConfig([
+  {
+    ignores: ['dist', 'coverage', 'node_modules', 'build', 'public/**/*.ts'],
+  },
+  {
+    files: ['**/*.{ts,tsx,js,jsx}'],
+    extends: [
+      js.configs.recommended,
+      ...tseslint.configs.strictTypeChecked,
+      ...tseslint.configs.stylisticTypeChecked,
+    ],
+    languageOptions: {
+      ecmaVersion: 2022,
+      globals: {
+        ...globals.browser,
+      },
+      parserOptions: {
+        project: './tsconfig.app.json',
+        tsconfigRootDir,
+      },
+    },
+    plugins: {
+      'react-hooks': reactHooks,
+      'react-refresh': reactRefresh,
+      'simple-import-sort': simpleImportSort,
+      tailwindcss,
+    },
+    settings: {
+      tailwindcss: {
+        callees: ['cn'],
+        config: 'tailwind.config.ts',
+      },
+    },
+    rules: {
+      ...reactHooks.configs.recommended.rules,
+      'react-refresh/only-export-components': 'off',
+      'simple-import-sort/imports': 'error',
+      'simple-import-sort/exports': 'error',
+      '@typescript-eslint/consistent-type-imports': ['error', { prefer: 'type-imports' }],
+      '@typescript-eslint/no-unused-vars': ['warn', { argsIgnorePattern: '^_', ignoreRestSiblings: true }],
+      '@typescript-eslint/no-misused-promises': ['error', { checksVoidReturn: { attributes: false } }],
+      'tailwindcss/classnames-order': 'warn',
+      'tailwindcss/no-arbitrary-value': 'off',
+      'tailwindcss/no-custom-classname': 'off',
+    },
+  },
+])