chore: harden repository guardrails

tests/fixtures/boundaries/module-imports-ui-package/modules/calendar/package.json

@@ -0,0 +1,11 @@
+{
+  "name": "@ekklesia/module-calendar",
+  "version": "0.0.0",
+  "type": "module",
+  "dependencies": {
+    "@ekklesia/ui": "workspace:*"
+  },
+  "exports": {
+    ".": "./src/index.ts"
+  }
+}