feat(sw): viewer layer bulb, popup toggle switch, footer layout and 1440px story inner

- SW Viewer layer popup: search + 전체 레이어 fixed, only the list scrolls; the all-layers
  control is the SWLayerVisibilityIcon bulb (role="switch"), one light #d2c8b4 line under it.
- Example H and the layer popup AI docs follow the bulb layout (VIEWER, DESIGN_RULES,
  COMPONENT_CATALOG, COMPOSITION_PATTERNS, AI_GUIDE sync).
- Popup toggle switch (Figma toggle_btn_new 633:75188 / 633:75902): one sw.css face for the
  HM UI Switch in SWPopup and SWViewerSwitch in SWViewerPanel; SW Header switches unchanged.
- SW Footer stories: no inner scrollers, fluid screens; workspace fits the viewport.
- SW Footer category tabs keep their positions when selected (divider slots kept, pocket
  edges drawn over the neighbours' padding).
- Storybook .sb-page-inner: 1440px max from 1920px (was 80vw).
- SW Header equal-split change was cancelled; header CSS unchanged.

Verified: check:ai-docs PASS, viewer test 49 PASS (1 FAIL hover face + timeout pre-existing),
footer-design-review 21 PASS, browser checks of switch/footer/inner.
Not verified: footer-popup-viewer-refinement (needs full Storybook build), text-weight/hover
tests, Switch 37x16 AI docs (deferred).

packages/sw/src/components/sw-viewer/SWViewerControls.tsx

@@ -11,8 +11,8 @@ export interface SWViewerSwitchProps extends Omit<ButtonHTMLAttributes<HTMLButto
 }
 
 /**
- * 36 x 20 switch. Its face follows where it is placed: dark header face (off #0A221D, on #FFC600) inside
- * SWViewerHeader, beige panel face (off #9A9284, on #266651) inside SWViewerPanel.
+ * Switch. Its face follows where it is placed: dark header face (36 x 20, off #0A221D, on #FFC600) inside
+ * SWViewerHeader, the SW popup toggle face (37 x 16, Figma toggle_btn_new, sw.css) inside SWViewerPanel.
  */
 export const SWViewerSwitch = forwardRef<HTMLButtonElement, SWViewerSwitchProps>(function SWViewerSwitch(
   { checked, onCheckedChange, className, onClick, ...rest }, ref,