feat(sw): use Dotum as the SW default font

- --hm-sw-header-font-family: Dotum, "돋움", "Malgun Gothic", "Apple SD Gothic Neo", sans-serif
  (one token on the outermost SW scope; no font file, no per-component font-family). Web UI keeps Noto Sans KR.
- Header drawing-mode cell keeps its Figma 90px width; padding 8px -> 4px because Dotum has no bold face and the
  synthesized 700 made "그리기모드" (77.8px) overflow the 74px content box.

packages/sw/src/theme/sw-footer.css

@@ -1,6 +1,6 @@
 /* @hm-design/sw — SW Footer (Figma "레이아웃 분리" 26:10097 bottom bar, components 26:9459 … 26:10097, read
    through the Figma Plugin API 2026-10-20). Footer-only tokens. Text keeps the SW typography of sw.css
-   (Noto Sans KR instead of Dotum, black OUTSIDE outline as 16 text-shadows, own-color 0.3 / 0.4px strokes removed
+   (Dotum like Figma since 2026-10-20, black OUTSIDE outline as 16 text-shadows, own-color 0.3 / 0.4px strokes removed
    like the 2026-10-16 header fix). Never touches global selectors, SWHeader or SWPopup classes.
    Declared on the outermost SW scope only, like sw.css: the command line inside the bar inherits the tokens. */