refactor(10.2-01): nest framework packages under modules

- Move remaining beach packages and embedded admin assets\n- Rewrite framework, example, build, and gate paths

modules/cabana/export_test.go

@@ -0,0 +1,13 @@
+package cabana
+
+// AdminAPIRoutes exposes the admin API route inventory (method plus
+// prefix-relative path) to the external conformance test.
+func AdminAPIRoutes() []string {
+	out := make([]string, 0, len(phase09Routes))
+	for _, route := range phase09Routes {
+		if !route.spa {
+			out = append(out, route.key)
+		}
+	}
+	return out
+}