Initial commit: FA Design System source files

Copy of the Funeral Arranger design system components, theme, tokens,
and Storybook config from the original Parsons project. Pre-upgrade
baseline with React 18, MUI v5, Storybook 8.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

eslint.config.js

@@ -0,0 +1,81 @@
+import js from '@eslint/js';
+import tseslint from 'typescript-eslint';
+import react from 'eslint-plugin-react';
+import reactHooks from 'eslint-plugin-react-hooks';
+import jsxA11y from 'eslint-plugin-jsx-a11y';
+import prettier from 'eslint-config-prettier';
+
+export default tseslint.config(
+  // Global ignores
+  {
+    ignores: [
+      'node_modules/',
+      'storybook-static/',
+      'src/theme/generated/',
+      'tokens/export/',
+      'style-dictionary/',
+      '*.config.js',
+      '*.config.ts',
+    ],
+  },
+
+  // Base JS recommended
+  js.configs.recommended,
+
+  // TypeScript recommended
+  ...tseslint.configs.recommended,
+
+  // React
+  {
+    plugins: { react },
+    settings: {
+      react: { version: 'detect' },
+    },
+    rules: {
+      'react/react-in-jsx-scope': 'off', // React 18 JSX transform
+      'react/prop-types': 'off', // TypeScript handles this
+      'react/display-name': 'off', // We use manual displayName assignment
+    },
+  },
+
+  // React Hooks
+  {
+    plugins: { 'react-hooks': reactHooks },
+    rules: {
+      'react-hooks/rules-of-hooks': 'error',
+      'react-hooks/exhaustive-deps': 'warn',
+    },
+  },
+
+  // Accessibility — critical for FA's elderly/distressed audience
+  {
+    plugins: { 'jsx-a11y': jsxA11y },
+    rules: {
+      ...jsxA11y.configs.recommended.rules,
+    },
+  },
+
+  // Project-specific rules
+  {
+    rules: {
+      '@typescript-eslint/no-explicit-any': 'error',
+      '@typescript-eslint/no-unused-vars': ['error', {
+        argsIgnorePattern: '^_',
+        varsIgnorePattern: '^_',
+      }],
+      'no-console': 'warn',
+    },
+  },
+
+  // Story files — relax rules for Storybook patterns
+  {
+    files: ['**/*.stories.tsx', '**/*.stories.ts'],
+    rules: {
+      'react-hooks/rules-of-hooks': 'off', // Storybook render functions use hooks but aren't uppercase components
+      'no-console': 'off', // Console in story actions is expected
+    },
+  },
+
+  // Prettier must be last — disables rules that conflict with formatting
+  prettier,
+);