Add initial blog HTML structure

Author: DevLabStudy

blog.html

@@ -0,0 +1,26 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <title>Blog | DevLabStudy</title>
+    <style>
+        body { font-family: -apple-system, sans-serif; max-width: 800px; margin: 40px auto; padding: 20px; line-height: 1.6; }
+        a { color: #2563eb; text-decoration: none; }
+        ul { list-style-type: none; padding: 0; }
+        li { margin-bottom: 10px; }
+    </style>
+</head>
+<body>
+    <a href="/">&larr; Wróć do Dashboardu</a>
+    <h1>Wpisy z laboratorium</h1>
+    
+    <ul>
+      {% for post in site.posts %}
+        <li>
+          <span style="color: #64748b;">{{ post.date | date: "%Y-%m-%d" }}</span> &raquo; 
+          <a href="{{ post.url }}">{{ post.title }}</a>
+        </li>
+      {% endfor %}
+    </ul>
+</body>
+</html>