test(sw): approve the f340a26 SW viewer open icon merge baseline

Test-only approval commit after the f340a26 main merge (sw-test-regression-
baseline section 9); no protected path changes, no Story change.
- approvedMainCommit 6b6f17c -> f340a26.
- public-api.approved.json kept: the public .d.ts files are byte-identical.
- docs/sw/sw-viewer-open-icon-2026-10-21.md: changes and verification.

packages/sw/tests/storybook-inventory.mjs

@@ -69,7 +69,9 @@ export const integratedChangedFiles = [
 // public-api.approved.json is kept).
 // -> 6b6f17c (2026-10-21, Merge fix/sw-viewer-strip-round: user-approved rounded viewer menu surface end and solid
 // viewer background, 3671657; CSS and docs only, no Story change, public-api.approved.json kept).
-export const approvedMainCommit = '6b6f17c1a95c19fcf0ff310e88544c0caae9e2a3'
+// -> f340a26 (2026-10-21, Merge fix/sw-viewer-open-icon-16: user-approved viewer open icon 16px area, open padding
+// and button-height token, 0840d76; CSS and docs only, no Story change, public-api.approved.json kept).
+export const approvedMainCommit = 'f340a264b88e8d7091dddea0bca961d45564c2d9'
 // 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.