style(sw): viewer popup typography, 전체 레이어 title and options layout

- Property popup: row labels 14px 500, read-only values 14px in the panel text
  color, monospace removed; 일반 정보 / 기하 속성 groups 20px apart
  (--hm-sw-viewer-panel-spacing on the second section).
- Layer popup: 전체 레이어 is a plain SWViewerSection title (existing
  .hm-sw-viewer-section__title) with the all-layers switch on the same row;
  layer names 14px 500, no monospace.
- Options popup follows the user image: 표시 (LWDISPLAY), 표시 배율 with the
  px/mm unit on the input row, updated lineweight hints.
- Remove stray monospace font-family from SW Story CSS.
- VIEWER.md §4.1 / new §4.2, DESIGN_RULES §11, Example H aligned.

src/sw/sw-home-menu.css

@@ -7,7 +7,7 @@
 .sw-home-menu-story__single { display: flex; height: 46px; }
 .sw-home-menu-story__toolbar { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 12px; }
 .sw-home-menu-story__toolbar > button { padding: 4px 8px; border: 1px solid #999; border-radius: 4px; background: #fff; font: inherit; font-size: 13px; cursor: pointer; }
-.sw-home-menu-story__log { margin: 12px 0 0; padding-left: 20px; font-family: monospace; font-size: 12px; }
+.sw-home-menu-story__log { margin: 12px 0 0; padding-left: 20px; font-size: 12px; }
 .sw-home-menu-story__tall .sw-home-menu-story__frame { height: 860px; }
 
 /* 2026-10-21 Storybook simplification (SW pages): no event log or long descriptions on screen; the log stays in the DOM