fix: stabilize plugin startup boundaries

src/plugin-sdk/root-alias.test.ts

@@ -173,10 +173,22 @@ describe("plugin-sdk root alias", () => {
   });
 
   it.each([
+    {
+      name: "prefers source loading when the source root alias runs in development",
+      options: {
+        distExists: true,
+        env: { NODE_ENV: "development" },
+        monolithicExports: {
+          slowHelper: (): string => "loaded",
+        },
+      },
+      expectedTryNative: false,
+    },
     {
       name: "prefers native loading when compat resolves to dist",
       options: {
         distExists: true,
+        env: { NODE_ENV: "production" },
         monolithicExports: {
           slowHelper: (): string => "loaded",
         },