docs(ai): add packaged AI guides for Web, SW and OrgChart

- Shared entry point docs/ai/AI_GUIDE.md (type selection Web / SW / OrgChart / mixed,
  steps 1-7, package style separation, report format, examples A-D) and
  AGENTS_SNIPPET.md, copied into every package ai/ folder
- New ai/ docs for @hm-design/ui and @hm-design/org-chart (+ org-chart-react pointer):
  AI_USAGE, COMPONENT_CATALOG, DESIGN_RULES, COMPOSITION_PATTERNS
- SW ai/ linked to the shared guide; catalog lists every Props type explicitly
- "ai" added to package files of ui, org-chart, org-chart-react
- scripts/ai-docs.mjs: sync:ai-docs / check:ai-docs (copies, files, catalog <-> exports, links)
- Maintenance guide and verification record under docs/ai

packages/org-chart-react/README.md

@@ -144,3 +144,7 @@ npm run build --workspace @hm-design/org-chart-react
 ```
 
 Storybook is one React host, not proof of every consumer deployment. The adapter delegates Auto Pan/Zoom to Core; it adds no alternate layout, additional relation overlays or API client. SSR/hydration, full screen reader behavior, physical touch, complete heap/GC recovery, HM Dialog without its Theme, Workdesk reference visual approval and every deployment environment require their own evidence. Default/Core rendering requires no HM Theme. Public ESM import without a DOM does not establish SSR/hydration support. Consult the minimal-install verification report for actual packed-package consumer results.
+
+## AI coding tools
+
+AI coding tools should read [`ai/AI_GUIDE.md`](./ai/AI_GUIDE.md) first (shared HMDesign entry point). [`ai/AI_USAGE.md`](./ai/AI_USAGE.md) points to the OrgChart rules, API catalog and patterns shipped in `@hm-design/org-chart/ai/`. `ai/` is included in the packed package.