v.0.3.6 message input box update

frontend/src/components/MessageInput.css

@@ -237,38 +237,3 @@
   }
 }
 
-/* Mention display overlay — sits over the textarea to show formatted @names */
-.input-wrap {
-  position: relative;
-}
-
-.msg-input-mirror {
-  position: absolute;
-  top: 0; left: 0; right: 0;
-  pointer-events: none;      /* clicks pass through to textarea */
-  overflow: hidden;
-  white-space: pre-wrap;
-  word-break: break-word;
-  color: var(--text-primary);
-  border-color: transparent;  /* hide the border — textarea draws it */
-  background: transparent;
-  z-index: 1;
-}
-
-.msg-input-raw {
-  position: relative;
-  color: transparent;          /* hide raw text — mirror shows it */
-  caret-color: var(--text-primary); /* but keep the cursor visible */
-  background: transparent;
-  z-index: 2;
-}
-
-/* Bold mention chips inside the mirror */
-.mention-chip {
-  font-weight: 700;
-  color: var(--primary);
-  font-style: normal;
-}
-
-/* Placeholder is on the raw textarea; mirror has none */
-.msg-input-mirror::placeholder { display: none; }