chore: initial monorepo scaffold

Setup pnpm workspaces with apps/{web,api} placeholders and shared
packages: tsconfig, eslint-config, shared, ui, db. Includes Prettier,
ESLint, Husky pre-commit, lint-staged, EditorConfig, VSCode settings.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

packages/eslint-config/index.cjs

@@ -0,0 +1,65 @@
+/** @type {import('eslint').Linter.Config} */
+module.exports = {
+  root: false,
+  parser: '@typescript-eslint/parser',
+  parserOptions: {
+    ecmaVersion: 2022,
+    sourceType: 'module',
+  },
+  plugins: ['@typescript-eslint', 'import'],
+  extends: [
+    'eslint:recommended',
+    'plugin:@typescript-eslint/recommended',
+    'plugin:import/recommended',
+    'plugin:import/typescript',
+    'prettier',
+  ],
+  settings: {
+    'import/resolver': {
+      typescript: {
+        alwaysTryTypes: true,
+      },
+      node: true,
+    },
+  },
+  rules: {
+    '@typescript-eslint/no-explicit-any': 'error',
+    '@typescript-eslint/no-unused-vars': [
+      'error',
+      { argsIgnorePattern: '^_', varsIgnorePattern: '^_' },
+    ],
+    '@typescript-eslint/consistent-type-imports': [
+      'error',
+      { prefer: 'type-imports', fixStyle: 'inline-type-imports' },
+    ],
+    'import/order': [
+      'error',
+      {
+        groups: ['builtin', 'external', 'internal', 'parent', 'sibling', 'index'],
+        'newlines-between': 'always',
+        alphabetize: { order: 'asc', caseInsensitive: true },
+      },
+    ],
+    'import/no-default-export': 'off',
+  },
+  overrides: [
+    {
+      files: ['*.cjs', '*.config.js', '*.config.mjs'],
+      env: { node: true },
+      rules: {
+        '@typescript-eslint/no-var-requires': 'off',
+      },
+    },
+  ],
+  ignorePatterns: [
+    'node_modules/',
+    'dist/',
+    'build/',
+    '.next/',
+    'out/',
+    'coverage/',
+    '*.config.js',
+    '*.config.cjs',
+    '*.config.mjs',
+  ],
+};

packages/eslint-config/nextjs.cjs

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+/** @type {import('eslint').Linter.Config} */
+module.exports = {
+  extends: [require.resolve('./index.cjs'), 'next/core-web-vitals'],
+  rules: {
+    'react/no-unescaped-entities': 'off',
+    '@next/next/no-html-link-for-pages': 'off',
+  },
+};

packages/eslint-config/node.cjs

@@ -0,0 +1,11 @@
+/** @type {import('eslint').Linter.Config} */
+module.exports = {
+  extends: [require.resolve('./index.cjs')],
+  env: {
+    node: true,
+    es2022: true,
+  },
+  rules: {
+    'no-console': ['warn', { allow: ['warn', 'error', 'info'] }],
+  },
+};

packages/eslint-config/package.json

@@ -0,0 +1,14 @@
+{
+  "name": "@ketopath/eslint-config",
+  "version": "0.0.0",
+  "private": true,
+  "main": "index.cjs",
+  "files": [
+    "index.cjs",
+    "nextjs.cjs",
+    "node.cjs"
+  ],
+  "peerDependencies": {
+    "eslint": "^8.57.0"
+  }
+}