SEO overhaul: product schema, dynamic sitemap, favicon, og-image fix

- product.php: set metaTitle, metaDescription, canonicalUrl, ogImage,
  ogType=product, productSchema (JSON-LD with price/availability/reviews),
  and breadcrumbs variables for header.php to consume
- sitemap.php: dynamic XML sitemap generated from DB — includes all 30
  active products + static pages; robots.txt now points here
- header.php: fix favicon links (favicon.ico in root + icon-192.png);
  fix productSchema output (was double-encoding via json_encode)
- robots.txt: point Sitemap directive to /sitemap.php

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

includes/header.php

@@ -54,7 +54,7 @@ $customerUser = $isLoggedIn ? CustomerAuth::getUser() : null;
     </script>
     <?php endif; ?>
     <?php if (!empty($productSchema)): ?>
-    <script type="application/ld+json"><?= json_encode($productSchema,JSON_UNESCAPED_SLASHES) ?></script>
+    <script type="application/ld+json"><?= $productSchema ?></script>
     <?php endif; ?>
 
     <!-- PWA Meta Tags -->
@@ -78,7 +78,9 @@ $customerUser = $isLoggedIn ? CustomerAuth::getUser() : null;
     <link rel="stylesheet" href="/assets/css/style.css?v=<?= filemtime($_SERVER['DOCUMENT_ROOT'] . '/assets/css/style.css') ?>">
     
     <!-- Favicon -->
-    <link rel="icon" href="/assets/images/logo.png" type="image/png">
+    <link rel="icon" type="image/x-icon" href="/favicon.ico">
+    <link rel="icon" type="image/png" sizes="192x192" href="/assets/images/icon-192.png">
+    <link rel="apple-touch-icon" sizes="192x192" href="/assets/images/icon-192.png">
 
     <?php if (strpos($_SERVER['REQUEST_URI'], 'payment') !== false || strpos($_SERVER['REQUEST_URI'], 'checkout') !== false): ?>
     <script src="https://js.stripe.com/v3/"></script>

product.php

@@ -23,9 +23,6 @@ if (!$product) {
     exit;
 }
 
-$pageTitle = $product['name'] . " - Tom's Java Jive";
-$pageDescription = truncate(strip_tags($product['description']), 160);
-
 // Get product reviews
 $reviews = db()->fetchAll(
     "SELECT * FROM reviews WHERE product_id = :id AND is_approved = 1 ORDER BY created_at DESC LIMIT 10",
@@ -49,6 +46,53 @@ $mainImage = !empty($images) ? $images[0] : '/assets/images/placeholder-product.
 $salePrice = $product['sale_price'];
 $price = $product['price'];
 $inStock = $product['stock'] > 0;
+$displayPrice = $salePrice ?? $price;
+
+// SEO meta
+$categoryLabel = ucfirst($product['category'] ?? 'Coffee');
+$metaTitle = $product['name'] . ' ' . $categoryLabel . " Coffee | Tom's Java Jive";
+$metaDescription = truncate(strip_tags($product['description'] ?? ''), 155)
+    ?: $product['name'] . ' flavored artisan coffee beans freshly roasted in Weatherford, TX. Available in whole bean and ground. Ships nationwide.';
+$metaKeywords = strtolower($product['name']) . ' coffee, ' . strtolower($categoryLabel) . ' coffee, flavored coffee beans, artisan coffee, buy coffee online';
+$canonicalUrl = 'https://tomsjavajive.com/product.php?id=' . $productId;
+$ogType = 'product';
+$ogImage = (strpos($mainImage, 'http') === 0) ? $mainImage : 'https://tomsjavajive.com' . $mainImage;
+
+// Structured data — Product schema
+$productSchemaData = [
+    '@context' => 'https://schema.org',
+    '@type'    => 'Product',
+    'name'     => $product['name'] . ' ' . $categoryLabel . ' Coffee',
+    'url'      => $canonicalUrl,
+    'image'    => $ogImage,
+    'description' => $metaDescription,
+    'brand'    => ['@type' => 'Brand', 'name' => "Tom's Java Jive"],
+    'offers'   => [
+        '@type'         => 'Offer',
+        'priceCurrency' => 'USD',
+        'price'         => number_format((float) $displayPrice, 2, '.', ''),
+        'availability'  => $inStock ? 'https://schema.org/InStock' : 'https://schema.org/OutOfStock',
+        'url'           => $canonicalUrl,
+        'seller'        => ['@type' => 'Organization', 'name' => "Tom's Java Jive"],
+    ],
+];
+if ($reviewCount > 0) {
+    $productSchemaData['aggregateRating'] = [
+        '@type'       => 'AggregateRating',
+        'ratingValue' => round($avgRating, 1),
+        'reviewCount' => $reviewCount,
+        'bestRating'  => 5,
+        'worstRating' => 1,
+    ];
+}
+$productSchema = json_encode($productSchemaData, JSON_UNESCAPED_SLASHES);
+
+// Breadcrumbs
+$breadcrumbs = [
+    ['name' => 'Home', 'url' => 'https://tomsjavajive.com/'],
+    ['name' => 'Shop', 'url' => 'https://tomsjavajive.com/shop.php'],
+    ['name' => $product['name'], 'url' => $canonicalUrl],
+];
 
 require_once __DIR__ . '/includes/header.php';
 ?>

robots.txt

@@ -8,4 +8,4 @@ Disallow: /checkout.php
 Disallow: /payment.php
 Disallow: /config/
 Disallow: /install/
-Sitemap: https://tomsjavajive.com/sitemap.xml
+Sitemap: https://tomsjavajive.com/sitemap.php

sitemap.php

@@ -0,0 +1,42 @@
+<?php
+/**
+ * Tom's Java Jive - Dynamic XML Sitemap
+ */
+require_once __DIR__ . '/includes/functions.php';
+
+header('Content-Type: application/xml; charset=utf-8');
+header('X-Robots-Tag: noindex');
+
+$base = 'https://tomsjavajive.com';
+$now  = date('Y-m-d');
+
+$products = db()->fetchAll(
+    "SELECT product_id, updated_at FROM products WHERE is_active = 1 ORDER BY created_at DESC"
+);
+
+echo '<?xml version="1.0" encoding="UTF-8"?>' . "\n";
+echo '<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">' . "\n";
+
+// Static pages
+$staticPages = [
+    ['loc' => '/',            'priority' => '1.0', 'changefreq' => 'weekly'],
+    ['loc' => '/shop.php',    'priority' => '0.9', 'changefreq' => 'daily'],
+    ['loc' => '/about.php',   'priority' => '0.6', 'changefreq' => 'monthly'],
+    ['loc' => '/contact.php', 'priority' => '0.5', 'changefreq' => 'monthly'],
+    ['loc' => '/login.php',   'priority' => '0.3', 'changefreq' => 'monthly'],
+    ['loc' => '/register.php','priority' => '0.3', 'changefreq' => 'monthly'],
+];
+
+foreach ($staticPages as $p) {
+    $loc = htmlspecialchars($base . $p['loc']);
+    echo "  <url><loc>{$loc}</loc><lastmod>{$now}</lastmod><changefreq>{$p['changefreq']}</changefreq><priority>{$p['priority']}</priority></url>\n";
+}
+
+// Product pages
+foreach ($products as $product) {
+    $loc      = htmlspecialchars($base . '/product.php?id=' . $product['product_id']);
+    $lastmod  = substr($product['updated_at'] ?? $now, 0, 10);
+    echo "  <url><loc>{$loc}</loc><lastmod>{$lastmod}</lastmod><changefreq>weekly</changefreq><priority>0.8</priority></url>\n";
+}
+
+echo '</urlset>';