perf: avoid broad testing barrel in moonshot test

extensions/moonshot/src/kimi-web-search-provider.test.ts

@@ -1,10 +1,28 @@
 import type { OpenClawConfig } from "openclaw/plugin-sdk/provider-onboard";
-import { withEnv } from "openclaw/plugin-sdk/testing";
 import { describe, expect, it } from "vitest";
 import { __testing } from "../test-api.js";
 
 const kimiApiKeyEnv = ["KIMI_API", "KEY"].join("_");
 
+function withEnv(overrides: Record<string, string>, run: () => void): void {
+  const previous = new Map<string, string | undefined>();
+  for (const [key, value] of Object.entries(overrides)) {
+    previous.set(key, process.env[key]);
+    process.env[key] = value;
+  }
+  try {
+    run();
+  } finally {
+    for (const [key, value] of previous) {
+      if (value === undefined) {
+        delete process.env[key];
+      } else {
+        process.env[key] = value;
+      }
+    }
+  }
+}
+
 describe("kimi web search provider", () => {
   it("uses configured model and base url overrides with sane defaults", () => {
     expect(__testing.resolveKimiModel()).toBe("kimi-k2.6");