Initial commit: Complete NodeJS-native setup

- Migrated from Python pre-commit to NodeJS-native solution
- Reorganized documentation structure
- Set up Husky + lint-staged for efficient pre-commit hooks
- Fixed Dockerfile healthcheck issue
- Added comprehensive documentation index

eslint.config.cjs

@@ -0,0 +1,70 @@
+const tsParser = require('@typescript-eslint/parser');
+const tsPlugin = require('@typescript-eslint/eslint-plugin');
+const reactHooksPlugin = require('eslint-plugin-react-hooks');
+
+module.exports = [
+  {
+    files: ['**/*.{js,jsx,ts,tsx}'],
+    languageOptions: {
+      parser: tsParser,
+      parserOptions: {
+        ecmaVersion: 'latest',
+        sourceType: 'module',
+        project: './tsconfig.json',
+        ecmaFeatures: {
+          jsx: true,
+        },
+      },
+      globals: {
+        browser: true,
+        es2021: true,
+        node: true,
+      },
+    },
+    plugins: {
+      '@typescript-eslint': tsPlugin,
+      'react-hooks': reactHooksPlugin,
+    },
+    rules: {
+      // TypeScript ESLint recommended rules
+      '@typescript-eslint/no-unused-vars': [
+        'error',
+        { argsIgnorePattern: '^_' },
+      ],
+      '@typescript-eslint/no-explicit-any': 'warn',
+      '@typescript-eslint/explicit-function-return-type': 'off',
+      '@typescript-eslint/explicit-module-boundary-types': 'off',
+      '@typescript-eslint/no-inferrable-types': 'error',
+      '@typescript-eslint/no-empty-function': 'warn',
+      '@typescript-eslint/prefer-const': 'error',
+      '@typescript-eslint/no-var-requires': 'error',
+
+      // React Hooks rules
+      'react-hooks/rules-of-hooks': 'error',
+      'react-hooks/exhaustive-deps': 'error',
+
+      // General JavaScript/TypeScript rules
+      'no-console': ['warn', { allow: ['warn', 'error'] }],
+      'no-debugger': 'error',
+      'no-duplicate-imports': 'error',
+      'no-unused-expressions': 'error',
+      'prefer-template': 'error',
+      'prefer-const': 'error',
+      'no-var': 'error',
+      'object-shorthand': 'error',
+      'prefer-destructuring': ['error', { object: true, array: false }],
+
+      // Code style (handled by Prettier, but good to have)
+      'comma-dangle': ['error', 'es5'],
+      quotes: ['error', 'single', { avoidEscape: true }],
+      semi: ['error', 'always'],
+    },
+  },
+  {
+    files: ['**/*.test.{js,jsx,ts,tsx}', '**/*.spec.{js,jsx,ts,tsx}'],
+    rules: {
+      '@typescript-eslint/no-explicit-any': 'off',
+      'no-console': 'off',
+    },
+  },
+];