test(sw): approve the fc65b2e header switch and footer tab baseline

Test-only approval commit after the user-approved 449398e and fc65b2e
commits on main (sw-test-regression-baseline section 9); no protected path
changes, no Story change.
- approvedMainCommit 8cb98b3 -> fc65b2e.
- public-api.approved.json kept: the public .d.ts files are byte-identical.
- docs/sw/sw-header-switch-footer-tabs-2026-10-22.md: change and verification.

packages/sw/tests/storybook-inventory.mjs

@@ -82,8 +82,11 @@ export const integratedChangedFiles = [
 // source / CSS / Story change, public-api.approved.json kept)
 // -> 8cb98b3 (2026-10-22, user-approved commit on main: viewer layer popup bulb icon and all-layers switch, new public
 // export SWLayerVisibilityIcon / SWLayerVisibilityIconProps; Story content only, no Story ID / tag change;
-// public-api.approved.json re-snapshotted from the clean 8cb98b3 build).
-export const approvedMainCommit = '8cb98b373f9e5321c8d6c032a6d2031e942dc508'
+// public-api.approved.json re-snapshotted from the clean 8cb98b3 build)
+// -> fc65b2e (2026-10-22, user-approved commits on main: 449398e viewer header switch colors, fc65b2e Bold 9-slice
+// footer tabs and the viewer panel 2px bottom edge; CSS / AI docs / tests only, no Story change, public .d.ts
+// byte-identical, public-api.approved.json kept).
+export const approvedMainCommit = 'fc65b2e836caac629bea06b7b8962f29dca35422'
 // 170a5c2: the SW/Header sidebar page of the home menu (the moved verification Stories are movedHomeMenuIds).
 export const homeMenuSidebarIds = ['sw-header--home-menu']
 // 6cf8854 SW Footer (current IDs after retiredFooterIds), 7f42923 viewer mode, 41e963a theme inheritance.