feat: Add SQL migration for custom emojis, pinned comments, and thread locking, and remove the comments refresh button from the UI.

public/s/js/comments.js

@@ -230,7 +230,7 @@ class CommentSystem {
                         <option value="new" ${this.sort === 'new' ? 'selected' : ''}>Newest</option>
                     </select>
                     ${currentUserId ? `<button id="subscribe-btn" class="${subClass}">${subText}</button>` : ''}
-                    <button id="refresh-comments">Refresh</button>
+
                     ${lockBtn}
                 </div>
             </div>
@@ -503,13 +503,7 @@ class CommentSystem {
             });
         }
 
-        // Refresh
-        const refBtn = this.container.querySelector('#refresh-comments');
-        if (refBtn) {
-            refBtn.addEventListener('click', async () => {
-                this.loadComments();
-            });
-        }
+
 
         // Lock Thread
         const lockBtn = this.container.querySelector('#lock-thread-btn');