site: add r/off_grid_ai subreddit to the sidebar social links

Add a Reddit link (with icon) alongside Slack and GitHub in the sidebar,
pointing at https://www.reddit.com/r/off_grid_ai/.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: 2 people

_layouts/default.html

@@ -209,6 +209,10 @@
             <svg width="12" height="12" viewBox="0 0 24 24" fill="currentColor" aria-hidden="true"><path d="M12 .297c-6.63 0-12 5.373-12 12 0 5.303 3.438 9.8 8.205 11.385.6.113.82-.258.82-.577 0-.285-.01-1.04-.015-2.04-3.338.724-4.042-1.61-4.042-1.61C4.422 18.07 3.633 17.7 3.633 17.7c-1.087-.744.084-.729.084-.729 1.205.084 1.838 1.236 1.838 1.236 1.07 1.835 2.809 1.305 3.495.998.108-.776.417-1.305.76-1.605-2.665-.3-5.466-1.332-5.466-5.93 0-1.31.465-2.38 1.235-3.22-.135-.303-.54-1.523.105-3.176 0 0 1.005-.322 3.3 1.23.96-.267 1.98-.399 3-.405 1.02.006 2.04.138 3 .405 2.28-1.552 3.285-1.23 3.285-1.23.645 1.653.24 2.873.12 3.176.765.84 1.23 1.91 1.23 3.22 0 4.61-2.805 5.625-5.475 5.92.42.36.81 1.096.81 2.22 0 1.606-.015 2.896-.015 3.286 0 .315.21.69.825.57C20.565 22.092 24 17.592 24 12.297c0-6.627-5.373-12-12-12"/></svg>
             GitHub
           </a>
+          <a href="https://www.reddit.com/r/off_grid_ai/" target="_blank" rel="noopener">
+            <svg width="12" height="12" viewBox="0 0 24 24" fill="currentColor" aria-hidden="true"><path d="M24 11.779c0-1.459-1.192-2.645-2.657-2.645-.715 0-1.363.286-1.84.746-1.81-1.191-4.259-1.949-6.971-2.046l1.483-4.669 4.016.941-.006.058c0 1.193.975 2.163 2.174 2.163 1.198 0 2.172-.97 2.172-2.163s-.975-2.164-2.172-2.164c-.92 0-1.704.574-2.021 1.379l-4.329-1.015c-.189-.046-.381.063-.44.249l-1.654 5.207c-2.759.076-5.245.837-7.075 2.04-.477-.463-1.13-.751-1.848-.751C1.192 9.134 0 10.32 0 11.779c0 1.079.649 2.005 1.579 2.417-.038.234-.06.472-.06.715 0 3.629 4.229 6.581 9.436 6.581 5.207 0 9.436-2.952 9.436-6.581 0-.234-.02-.466-.056-.692.945-.406 1.605-1.339 1.605-2.44zM6.196 13.906c0-.834.679-1.512 1.514-1.512.833 0 1.51.678 1.51 1.512 0 .833-.677 1.51-1.51 1.51-.835 0-1.514-.677-1.514-1.51zm8.144 4.184c-.795.795-2.318.856-2.762.856-.444 0-1.968-.061-2.763-.856-.118-.118-.118-.31 0-.428.118-.117.31-.117.428 0 .501.501 1.573.679 2.335.679.762 0 1.834-.178 2.335-.679.117-.117.309-.117.427 0 .118.118.118.31 0 .428zm-.243-2.674c-.834 0-1.511-.677-1.511-1.51 0-.834.677-1.512 1.511-1.512.833 0 1.51.678 1.51 1.512 0 .833-.677 1.51-1.51 1.51z"/></svg>
+            Reddit
+          </a>
         </div>
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