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/README.md

@@ -271,3 +271,7 @@ Enter로도 이동하며 Esc로 취소한다. Fixed에는 편집을 적용하지
 
 데이터는 브라우저 인스턴스에만 유지한다. 회사 표시 선택은 이동 내용을 보존하고,
 새 source의 reload/update는 새 데이터로 대체한다. JSON 파일·서버 저장은 수행하지 않는다.
+
+## AI coding tools
+
+AI coding tools should read [`ai/AI_GUIDE.md`](./ai/AI_GUIDE.md) first (shared HMDesign entry point), then the OrgChart rules in [`ai/AI_USAGE.md`](./ai/AI_USAGE.md) (Chart Only / Full Page pre-selection, data rules), [`ai/COMPONENT_CATALOG.md`](./ai/COMPONENT_CATALOG.md) (Core and React API), [`ai/DESIGN_RULES.md`](./ai/DESIGN_RULES.md) and [`ai/COMPOSITION_PATTERNS.md`](./ai/COMPOSITION_PATTERNS.md). `ai/` is included in the packed package. To make a consumer project pick them up automatically, copy [`ai/AGENTS_SNIPPET.md`](./ai/AGENTS_SNIPPET.md) into its root `AGENTS.md`.