feat: bootstrap design kit and vaporwave demo baseline

exports/bundles/ui-pattern-modal.yaml

@@ -0,0 +1,9 @@
+{
+  "id": "ui-pattern-modal",
+  "version": 1,
+  "description": "Modal workflow pattern docs and starter templates.",
+  "conflict_policy": "merge-manual",
+  "entries": [
+    { "from": "patterns/modal-workflows", "to": "docs/ui-patterns/modal-workflows", "mode": "dir" }
+  ]
+}