resolve: keep ci-blocking.yml from master, regenerate package-lock.json

. prettierrc

@@ -0,0 +1,7 @@
+{
+  "semi": true,
+  "singleQuote": true,
+  "tabWidth": 2,
+  "trailingComma": "es5",
+  "printWidth": 100
+}

.eslintrc.json

@@ -0,0 +1,18 @@
+{
+  "root": true,
+  "env": {
+    "node": true,
+    "commonjs": true,
+    "es2021": true,
+    "mocha": true
+  },
+  "parserOptions": {
+    "ecmaVersion": 12
+  },
+  "rules": {
+    "no-console": "off",
+    "no-unused-vars": "warn",
+    "no-undef": "error"
+  },
+  "ignorePatterns": ["node_modules/", "dist/", "coverage/"]
+}

.github/workflows/BRANCH_PROTECTION.md

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+# 🔒 Branch Protection Rules - NutriHelp API
+
+## Required Checks Before Merge
+
+All pull requests MUST pass these 6 BLOCKING checks:
+
+| Check Name | Purpose |
+|------------|---------|
+| **lint** | ESLint code quality |
+| **format-check** | Prettier formatting |
+| **unit-tests** | Unit test suite |
+| **openapi-validate** | OpenAPI spec validation |
+| **security-scan** | Vulnerability audit |
+| **build-check** | Syntax verification |
+
+## Setup Instructions
+
+1. Go to **Settings** → **Branches** → **Add branch protection rule**
+2. Branch name pattern: `main` or `develop`
+3. Enable:
+   - ✅ Require pull request reviews before merging
+   - ✅ Require status checks to pass before merging
+   - ✅ Select all 6 checks above
+   - ✅ Require branches to be up to date
+   - ✅ Include administrators
+
+## Local Testing
+
+```bash
+# Run all checks locally
+npm run validate
+
+# Individual checks
+npm run lint
+npm run format:check
+npm test
+npm run openapi:validate