feat: wire global runtime injection and playground

test/fixtures/basic/permissions/__can__.ts

@@ -0,0 +1,10 @@
+const granted = new Set([
+  'employee.view',
+  'employee.edit',
+  'contract.create',
+])
+
+export function __can__(path: string[]) {
+  const key = Array.isArray(path) ? path.join('.') : String(path)
+  return granted.has(key)
+}