test(sw): approve the SW Viewer Header API and Storybook cleanup baselines

Test-only approval commit after the 34f02bf main merge (sw-test-regression-
baseline section 9); no protected path changes.
- public-api.approved.json from the clean 34f02bf build: 170 exports kept,
  only SWViewerHeader.d.ts changes (7 optional SWViewerHeaderProps).
- approvedMainCommit b4e0771 -> b320a8f; approvedHeaderDeclarations for the
  23d522c Story declarations; withApprovedOrder for the approved SW Header
  first position; storybook-simplification expects SW/Theme hidden.
- Verification report: docs/sw/sw-viewer-storybook-merge-verification-2026-10-21.md

packages/sw/tests/public-api.approved.json

@@ -1,6 +1,6 @@
 {
   "package": "@hm-design/sw",
-  "approvedCommit": "553e4df4a865aaf6514b1c2b86cb2e3e9a658e5f",
+  "approvedCommit": "34f02bf0f4e6bd846833d349dd239a4391eed851",
   "manifest": {
     "name": "@hm-design/sw",
     "exports": {
@@ -228,7 +228,7 @@
     "components/sw-tool/SWTool.d.ts": "23b1eb156578cd3f1dee325afbd81988d88c4a3f421f7350a0e8c47c652e804c",
     "components/sw-viewer/index.d.ts": "381caef510e7a4c903c70a12e24b6f5c1908c2ee98c3816066639583b0f7d658",
     "components/sw-viewer/SWViewerControls.d.ts": "ca32e8a2a7de2cfefec36273ffb473271ad438cfb663f44a25871ee6aed9222d",
-    "components/sw-viewer/SWViewerHeader.d.ts": "2ca96432c4a0d2e14f7033ebde1c5a25980bf50903e2789d3657d5c3edc96039",
+    "components/sw-viewer/SWViewerHeader.d.ts": "586d07e74f5c2673fbe1d4849ed72cdcf80e7f8a391393168f101dc613490d24",
     "components/sw-viewer/SWViewerIcon.d.ts": "3c81582860e481b037b395b3584ff93af73500e4040d8423c9da15c2b4dd108e",
     "components/sw-viewer/SWViewerMenu.d.ts": "15fa615c3472d84037780f3c93387acbc6b4d05f5fb56731b0a99262b3f7f109",
     "components/sw-viewer/SWViewerPanel.d.ts": "49b040d3f3d00de30e3fc0493fd2ce78e309616ec97a7ce226dfef300b640f92",