added tags functionality

templates/tag.html

@@ -0,0 +1,16 @@
+{% extends "base.html" %}
+
+{% block content %}
+  <h2>Posts tagged with "{{ tag_name }}"</h2>
+  
+  <div class="post-list">
+    {% for p in pages %}
+      <article class="post-item">
+        <h3><a href="{{ url_for('post', path=p.path) }}">{{ p.title }}</a></h3>
+        <span class="date">{{ p.date }}</span>
+      </article>
+    {% else %}
+      <p>No posts found with this tag.</p>
+    {% endfor %}
+  </div>
+{% endblock %}