docs(sw): AI rules, example E, tests and evidence for the popup / footer / header changes

AI documents (packages/sw/ai)
- SWPopupPropertyRow, SWSelect, SWSlider in the catalog, usage table,
  composition patterns and design rules; SWViewerSlider noted as SWSlider panel.
- Rule: the SWHeader layer / color dropdowns are header-only; popup layer /
  color / line style use SWPopupPropertyRow (property window pickers).
- Footer rules: gra-border-orange surfaces, Model / Layout text unchanged on
  hover, side button hover, vacant surface limited to the slot row.
- Header rules: measured More growing behavior (hysteresis fix A).
- Example E (custom popup) uses SWPopupPropertyRow, SWSelect and SWSlider
  instead of SWHeaderLayerMenu in the popup.

Tests (packages/sw/tests)
- New footer-popup-viewer-refinement.browser.mjs (47 checks: footer stories,
  hover / gradient / tab text / pocket, popup pickers vs property window rows,
  SWSlider, unit SWSelect parity, Popup B, header trace, viewer title art).
- integrated-popup / integrated-consumer: popup pickers and SWSelect instead of
  the header dropdown and the HM UI Select (same overlay / callback / Escape
  requirements).
- integrated-improvement: default sections skip the retired SW/Tool story
  ('tool' still runs by name); storybook-inventory / simplification record the
  retired footer IDs; theme-inheritance widths use sw-footer--full-footer.

Docs (docs/sw)
- sw-footer-popup-viewer-refinement-2026-10-20.md: causes, decisions (the
  first-pass "header dropdown in popup" change is marked withdrawn),
  verification and baseline failures; evidence footer-popup-viewer-refinement-qa
  (47/47). Footer mapping document updated for the removed sections.

Baseline failures (unchanged by this work): home-menu-integration 1,
storybook-unused-removal 5 (10-19 snapshot comparisons), range-cross-browser and
property-panel-comparison open stories retired on 2026-10-19.

packages/sw/tests/storybook-inventory.mjs

@@ -26,6 +26,9 @@ export const movedHomeMenuIds = Object.fromEntries(["figma-home-on:figma", "capt
 export const retiredHomeMenuCompareIds = ["figma", "capture-active", "capture-outline", "capture-recent", "variants", "recent-files"].map(id => `sw-header--home-menu-${id}`)
 // 2026-10-20: Property Panel · 4개 비교 moved to SW/Popup in the sidebar; its ID is unchanged (meta id "sw-header").
 export const movedToPopupIds = ["sw-header--property-panel-compare"]
+// 2026-10-20 (Footer Story cleanup, user request): 기본 Footer and the States page were removed. Their screens are sections
+// of sw-footer--full-footer (Figma 기본 구성, 상태); the aux Figma comparison moved to sw-footer--figma-variants.
+export const retiredFooterIds = ["default", "states"].map(id => `sw-footer--${id}`)
 export const integratedChangedFiles = [
   'packages/sw/README.md', 'packages/sw/package.json', 'packages/sw/build.mjs',
   'packages/sw/ai/AI_USAGE.md', 'packages/sw/ai/COMPONENT_CATALOG.md', 'packages/sw/ai/COMPOSITION_PATTERNS.md', 'packages/sw/ai/DESIGN_RULES.md',