fix(M02): 도면 칸 CAD 💾 · Ctrl+S 가 페이지 [저장] 을 부름 · 엉터리 도각 파일은 400 · 자리표 패널 접기 단추 (PLAN 10-3)

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PxvYb5ufV1kWdBvZbpDfu6

B07_DesignDetail/openwebcad/src/App.css

@@ -966,11 +966,24 @@ body > canvas[data-id="canvas"] {
 }
 
 .cad-frame-tokens__header {
+	display: flex;
+	justify-content: space-between;
+	align-items: flex-start;
+	gap: 6px;
 	color: var(--cad-text-dim);
 	font-size: 11px;
 	line-height: 1.4;
 }
 
+.cad-frame-tokens__fold {
+	flex: none;
+	border: 1px solid var(--cad-line);
+	border-radius: 4px;
+	background: transparent;
+	color: var(--cad-text);
+	cursor: pointer;
+}
+
 .cad-frame-tokens__group {
 	display: flex;
 	flex-wrap: wrap;