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/package.json

@@ -11,7 +11,7 @@
     "./engine.css": "./dist/engine.css",
     "./browser": "./dist/orgchart.browser.js"
   },
-  "files": ["dist", "README.md"],
+  "files": ["dist", "ai", "README.md"],
   "sideEffects": ["**/*.css"],
   "scripts": {
     "typecheck": "tsc -p tsconfig.json",