feat(sw): integrate home menu into SWHeader (Task A + B)

Combine Task A (e8409ef, SW 0.2.0 integrated improvement) with Task B
(396539d, Figma-based SWHomeMenu / SWHomeMenuSection / SWHomeMenuItem /
SWRecentFiles). Task B's 84 new files are taken unchanged except for the
public-import Storybook update and joining the popup Escape stack.

- Export the home menu from @hm-design/sw
- SWHeader homeMenu / homeMenuOpen / defaultHomeMenuOpen /
  onHomeMenuOpenChange: hidden by default, the logo toggles it (onHomeClick
  is not called while homeMenu is set), placed from the measured header,
  closes with / closes the document and field dropdowns
- Logo aria-expanded / aria-controls; menu layer CSS (z-index 20)
- AI catalog / patterns / design rules, example G, README, usage guide
- Storybook SW/Home Menu uses @hm-design/sw; integration story

Verified: SW typecheck, tsc -b, SW build, Storybook build, AI docs 22/22,
28/28 existing SW shots pixel-identical, regression 96 PASS / 0 FAIL,
home menu checks 22/22. Not run: tarball consumer install.

docs/sw/home-menu-integration-qa/final-visual/capture.json

@@ -0,0 +1,34 @@
+{
+  "browser": "155.0.8059.80",
+  "shots": [
+    "overview-1920.png",
+    "detail-buttons-1920.png",
+    "interactive-states-1920.png",
+    "window-move-motion-1920.png",
+    "logo-slot-1920.png",
+    "document-dropdown-1920.png",
+    "responsive-more-1920.png",
+    "k-guide-1920.png",
+    "property-panel-compare-1920.png",
+    "composed-controls-1920.png",
+    "overview-1800.png",
+    "overview-1440.png",
+    "overview-1180.png",
+    "overview-1080.png",
+    "overview-900.png",
+    "overview-768.png",
+    "overview-640.png",
+    "overview-520.png",
+    "overview-390.png",
+    "responsive-more-1800.png",
+    "responsive-more-1440.png",
+    "responsive-more-1180.png",
+    "responsive-more-1080.png",
+    "responsive-more-900.png",
+    "responsive-more-768.png",
+    "responsive-more-640.png",
+    "responsive-more-520.png",
+    "responsive-more-390.png"
+  ],
+  "errors": []
+}