docs: add SEO implementation documentation and tests

- Add comprehensive SEO implementation guide
- Add automated SEO testing script
- Document all schema types and integrations
- Include verification methods and expected impact

scripts/test-seo.js

@@ -0,0 +1,95 @@
+#!/usr/bin/env node
+/**
+ * SEO Best Practices Test
+ * Verifies schema markup and meta tags are properly generated
+ */
+
+const fs = require('fs');
+const path = require('path');
+
+console.log('🔍 Testing SEO Implementation...\n');
+
+const results = {
+  passed: 0,
+  failed: 0,
+  warnings: 0,
+  tests: []
+};
+
+function test(name, condition, critical = true) {
+  const status = condition ? '✅ PASS' : critical ? '❌ FAIL' : '⚠️  WARN';
+  results.tests.push({ name, status, critical });
+  
+  if (condition) {
+    results.passed++;
+  } else if (critical) {
+    results.failed++;
+  } else {
+    results.warnings++;
+  }
+  
+  console.log(`${status}: ${name}`);
+}
+
+// Test 1: Check if SEO modules exist
+console.log('📦 Module Structure Tests:');
+test('Keywords module exists', fs.existsSync('src/lib/seo/keywords/index.ts'));
+test('Schema module exists', fs.existsSync('src/lib/seo/schema/index.ts'));
+test('SEO components exist', fs.existsSync('src/components/seo/index.ts'));
+
+// Test 2: Check if all locale configs exist
+console.log('\n🌍 Locale Configuration Tests:');
+const locales = ['sr', 'en', 'de', 'fr'];
+locales.forEach(locale => {
+  test(`Keywords config for ${locale}`, 
+    fs.existsSync(`src/lib/seo/keywords/locales/${locale}.ts`));
+});
+
+// Test 3: Check schema generators
+console.log('\n🏗️  Schema Generator Tests:');
+test('Product schema generator exists', 
+  fs.existsSync('src/lib/seo/schema/productSchema.ts'));
+test('Organization schema generator exists', 
+  fs.existsSync('src/lib/seo/schema/organizationSchema.ts'));
+test('Breadcrumb schema generator exists', 
+  fs.existsSync('src/lib/seo/schema/breadcrumbSchema.ts'));
+
+// Test 4: Check React components
+console.log('\n⚛️  React Component Tests:');
+test('JsonLd component exists', 
+  fs.existsSync('src/components/seo/JsonLd.tsx'));
+test('ProductSchema component exists', 
+  fs.existsSync('src/components/seo/ProductSchema.tsx'));
+test('OrganizationSchema component exists', 
+  fs.existsSync('src/components/seo/OrganizationSchema.tsx'));
+
+// Test 5: Check page integrations
+console.log('\n📄 Page Integration Tests:');
+test('Root layout updated with OrganizationSchema', 
+  fs.readFileSync('src/app/layout.tsx', 'utf8').includes('OrganizationSchema'));
+test('Product page has ProductSchema', 
+  fs.readFileSync('src/app/[locale]/products/[slug]/page.tsx', 'utf8').includes('ProductSchema'));
+test('Product page has enhanced metadata', 
+  fs.readFileSync('src/app/[locale]/products/[slug]/page.tsx', 'utf8').includes('openGraph'));
+test('Checkout has noindex layout', 
+  fs.existsSync('src/app/[locale]/checkout/layout.tsx'));
+
+// Test 6: Check TypeScript types
+console.log('\n📐 TypeScript Type Tests:');
+test('SEO types defined', fs.existsSync('src/lib/seo/keywords/types.ts'));
+test('Schema types defined', fs.existsSync('src/lib/seo/schema/types.ts'));
+
+// Summary
+console.log('\n' + '='.repeat(50));
+console.log(`✅ Passed: ${results.passed}`);
+console.log(`❌ Failed: ${results.failed}`);
+console.log(`⚠️  Warnings: ${results.warnings}`);
+console.log('='.repeat(50));
+
+if (results.failed === 0) {
+  console.log('\n🎉 All critical SEO tests passed!');
+  process.exit(0);
+} else {
+  console.log(`\n⚠️  ${results.failed} critical test(s) failed.`);
+  process.exit(1);
+}