fix: align teacher and operation composer heights

src/pages/Chat/classroom-workspace.css

@@ -41,7 +41,8 @@
 .classroom-tabs button[aria-selected="true"] { background: #eaf1fb; border-color: #ccdaeb; color: #36557b; box-shadow: 0 2px 0 #dce6f3; }
 .classroom-chat-view:not([hidden]), .classroom-work-view:not([hidden]) { display: flex; }
 .classroom-chat-view[hidden], .classroom-work-view[hidden] { display: none; }
-.classroom-workspace [data-testid="coding-message-composer"] { max-width: 740px; padding-bottom: 22px; }
+.classroom-workspace [data-testid="coding-message-composer"] { max-width: 740px; }
+.classroom-workspace [data-testid="coding-message-composer"], .classroom-workspace .consultation-pane > form { padding-bottom: 22px; }
 .classroom-workspace .chat-composer-surface { border-color: #d3dfeb; border-bottom-width: 3px; border-radius: 14px; box-shadow: 0 3px 12px #3a557806; }
 .classroom-workspace [data-testid="coding-conversation-timeline"] { padding-top: 30px; }
 .classroom-work-view [data-testid="agent-browser-panel"] { border: 1px solid #dce5ef; border-radius: 12px; }
@@ -72,7 +73,7 @@
 .consultation-follow-up:disabled { cursor: not-allowed; opacity: 0.5; }
 .consultation-pane .consultation-follow-up:focus-visible { outline-color: #6683a5; }
 .consultation-user { background: #eaf0e1; }
-.consultation-composer { border-color: #dce3d3; }
+.consultation-composer { border-color: #dce3d3; border-bottom-width: 3px; }
 .consultation-send { background: #536947; }
 @media (max-width: 1100px) { .classroom-tabs { padding-left: 18px; padding-right: 18px; } }
 @media (max-width: 900px) { .classroom-consultation-dock { position: absolute; inset: 0 0 0 auto; z-index: 45; max-width: 100%; box-shadow: -12px 0 36px #24311b0d; } .classroom-consultation-resizer { display: none; } }