V0.8.8 removed the pinning feature

frontend/src/components/Sidebar.css

@@ -154,55 +154,6 @@
   flex-shrink: 0;
 }
 
-/* Conversation pin button — visible on hover (desktop) or always when pinned */
-.group-item-actions {
-  display: flex;
-  align-items: center;
-  gap: 4px;
-  flex-shrink: 0;
-}
-
-.conv-pin-btn {
-  display: none;
-  align-items: center;
-  justify-content: center;
-  width: 22px;
-  height: 22px;
-  border-radius: 4px;
-  color: var(--text-tertiary);
-  opacity: 0;
-  transition: opacity var(--transition), color var(--transition), background var(--transition);
-  flex-shrink: 0;
-}
-.conv-pin-btn:hover { background: var(--border); color: var(--primary); }
-.conv-pin-btn.pinned {
-  display: flex;
-  opacity: 1;
-  color: var(--primary);
-}
-.group-item:hover .conv-pin-btn {
-  display: flex;
-  opacity: 0.7;
-}
-.group-item:hover .conv-pin-btn:hover { opacity: 1; }
-
-/* Small pin icon inline before the name when conversation is pinned */
-.conv-pin-indicator {
-  display: inline;
-  vertical-align: middle;
-  margin-right: 3px;
-  color: var(--primary);
-  opacity: 0.7;
-  position: relative;
-  top: -1px;
-}
-
-/* Pinned conversations get a subtle left accent */
-.group-item.is-pinned {
-  border-left: 2px solid var(--primary);
-  padding-left: 14px;
-}
-
 .group-last-msg {
   font-size: 13px;
   color: var(--text-secondary);
@@ -299,25 +250,6 @@
   pointer-events: none;
 }
 
-/* Pin sublabel */
-.section-sublabel {
-  display: flex;
-  align-items: center;
-  font-size: 10px;
-  font-weight: 600;
-  letter-spacing: 0.06em;
-  color: var(--text-tertiary);
-  padding: 4px 12px 2px;
-  text-transform: uppercase;
-}
-
-/* Thin divider between pinned and unpinned */
-.section-divider {
-  height: 1px;
-  background: var(--border);
-  margin: 4px 12px;
-  opacity: 0.6;
-}
 
 /* DM right-click context menu */
 .dm-context-menu {