Add canonical and social SEO meta tags for core page templates

templates/blog/article_index_page.html

@@ -1,6 +1,14 @@
 {% extends 'base.html' %}
-{% load core_tags %}
+{% load core_tags seo_tags %}
 {% block title %}Articles | No Hype AI{% endblock %}
+{% block head_meta %}
+  {% canonical_url page as canonical %}
+  <link rel="canonical" href="{{ canonical }}" />
+  <meta name="description" content="Latest No Hype AI articles and benchmark-driven reviews." />
+  <meta property="og:type" content="website" />
+  <meta property="og:title" content="Articles | No Hype AI" />
+  <meta property="og:url" content="{{ canonical }}" />
+{% endblock %}
 {% block content %}
 <h1>{{ page.title }}</h1>
 {% for article in articles %}