Add Plausible analytics to all 1206 pages

Self-hosted instance at plausible.office.odoo4projects.com.
Injected before </head> on every page; the empty pt booking stub is left untouched.

odoo-ia/que-es-odoo-ia-guia-basica-2025/index.html

@@ -127,6 +127,12 @@
         .concept-box { background: #2a2a2a; border: 2px solid #FF6B35; border-radius: 12px; padding: 1.5rem; margin: 2rem 0; }
         .simple-list { background: #2a2a2a; border-left: 5px solid #FF6B35; padding: 1.5rem; margin: 1rem 0; border-radius: 0 8px 8px 0; }
     </style>
+    <!-- Privacy-friendly analytics by Plausible -->
+    <script async src="https://plausible.office.odoo4projects.com/js/pa-VLJpcZHbeLiw9Ub8C_MgG.js"></script>
+    <script>
+      window.plausible=window.plausible||function(){(plausible.q=plausible.q||[]).push(arguments)},plausible.init=plausible.init||function(i){plausible.o=i||{}};
+      plausible.init()
+    </script>
 </head>
 <body>
     <script src="/components/header.min.js"></script>