perf(test): stabilize e2e harness and reduce flaky gateway coverage

test/media-understanding.auto.e2e.test.ts

@@ -1,9 +1,11 @@
 import fs from "node:fs/promises";
 import os from "node:os";
 import path from "node:path";
-import { afterEach, describe, expect, it, vi } from "vitest";
+import { afterEach, beforeEach, describe, expect, it } from "vitest";
 import type { MsgContext } from "../src/auto-reply/templating.js";
 import type { OpenClawConfig } from "../src/config/config.js";
+import { applyMediaUnderstanding } from "../src/media-understanding/apply.js";
+import { clearMediaUnderstandingBinaryCacheForTests } from "../src/media-understanding/runner.js";
 
 const makeTempDir = async (prefix: string) => await fs.mkdtemp(path.join(os.tmpdir(), prefix));
 
@@ -20,11 +22,6 @@ const makeTempMedia = async (ext: string) => {
   return { dir, filePath };
 };
 
-const loadApply = async () => {
-  vi.resetModules();
-  return await import("../src/media-understanding/apply.js");
-};
-
 const envSnapshot = () => ({
   PATH: process.env.PATH,
   SHERPA_ONNX_MODEL_DIR: process.env.SHERPA_ONNX_MODEL_DIR,
@@ -40,6 +37,10 @@ const restoreEnv = (snapshot: ReturnType<typeof envSnapshot>) => {
 describe("media understanding auto-detect (e2e)", () => {
   let tempPaths: string[] = [];
 
+  beforeEach(() => {
+    clearMediaUnderstandingBinaryCacheForTests();
+  });
+
   afterEach(async () => {
     for (const p of tempPaths) {
       await fs.rm(p, { recursive: true, force: true }).catch(() => {});
@@ -71,7 +72,6 @@ describe("media understanding auto-detect (e2e)", () => {
       const { filePath } = await makeTempMedia(".wav");
       tempPaths.push(path.dirname(filePath));
 
-      const { applyMediaUnderstanding } = await loadApply();
       const ctx: MsgContext = {
         Body: "<media:audio>",
         MediaPath: filePath,
@@ -116,7 +116,6 @@ describe("media understanding auto-detect (e2e)", () => {
       const { filePath } = await makeTempMedia(".wav");
       tempPaths.push(path.dirname(filePath));
 
-      const { applyMediaUnderstanding } = await loadApply();
       const ctx: MsgContext = {
         Body: "<media:audio>",
         MediaPath: filePath,
@@ -141,7 +140,7 @@ describe("media understanding auto-detect (e2e)", () => {
       await writeExecutable(
         binDir,
         "gemini",
-        `#!/usr/bin/env bash\necho '{\\"response\\":\\"gemini ok\\"' + "}'\n`,
+        `#!/usr/bin/env bash\necho '{"response":"gemini ok"}'\n`,
       );
 
       process.env.PATH = `${binDir}:/usr/bin:/bin`;
@@ -149,7 +148,6 @@ describe("media understanding auto-detect (e2e)", () => {
       const { filePath } = await makeTempMedia(".png");
       tempPaths.push(path.dirname(filePath));
 
-      const { applyMediaUnderstanding } = await loadApply();
       const ctx: MsgContext = {
         Body: "<media:image>",
         MediaPath: filePath,