diff --git a/src/auto-reply/reply.block-streaming.test.ts b/src/auto-reply/reply.block-streaming.test.ts
index 1f0e2e1d1cc..13fe980bde8 100644
--- a/src/auto-reply/reply.block-streaming.test.ts
+++ b/src/auto-reply/reply.block-streaming.test.ts
@@ -1,9 +1,9 @@
 import fs from "node:fs/promises";
-import os from "node:os";
 import path from "node:path";
-import { afterAll, beforeAll, beforeEach, describe, expect, it, vi } from "vitest";
+import { beforeEach, describe, expect, it, vi } from "vitest";
 import { loadModelCatalog } from "../agents/model-catalog.js";
 import type { OpenClawConfig } from "../config/config.js";
+import { withTempHome as withTempHomeHarness } from "../config/home-env.test-harness.js";
 import { getReplyFromConfig } from "./reply.js";
 
 type RunEmbeddedPiAgent = typeof import("../agents/pi-embedded.js").runEmbeddedPiAgent;
@@ -25,37 +25,6 @@ vi.mock("../agents/model-catalog.js", () => ({
   loadModelCatalog: vi.fn(),
 }));
 
-type HomeEnvSnapshot = {
-  HOME: string | undefined;
-  USERPROFILE: string | undefined;
-  HOMEDRIVE: string | undefined;
-  HOMEPATH: string | undefined;
-  OPENCLAW_STATE_DIR: string | undefined;
-};
-
-function snapshotHomeEnv(): HomeEnvSnapshot {
-  return {
-    HOME: process.env.HOME,
-    USERPROFILE: process.env.USERPROFILE,
-    HOMEDRIVE: process.env.HOMEDRIVE,
-    HOMEPATH: process.env.HOMEPATH,
-    OPENCLAW_STATE_DIR: process.env.OPENCLAW_STATE_DIR,
-  };
-}
-
-function restoreHomeEnv(snapshot: HomeEnvSnapshot) {
-  for (const [key, value] of Object.entries(snapshot)) {
-    if (value === undefined) {
-      delete process.env[key];
-    } else {
-      process.env[key] = value;
-    }
-  }
-}
-
-let fixtureRoot = "";
-let caseId = 0;
-
 type GetReplyOptions = NonNullable<Parameters<typeof getReplyFromConfig>[1]>;
 
 function createEmbeddedReply(text: string): RunEmbeddedPiAgentReply {
@@ -111,49 +80,13 @@ async function runTelegramReply(params: {
 }
 
 async function withTempHome<T>(fn: (home: string) => Promise<T>): Promise<T> {
-  const home = path.join(fixtureRoot, `case-${++caseId}`);
-  await fs.mkdir(path.join(home, ".openclaw", "agents", "main", "sessions"), { recursive: true });
-  const envSnapshot = snapshotHomeEnv();
-  process.env.HOME = home;
-  process.env.USERPROFILE = home;
-  process.env.OPENCLAW_STATE_DIR = path.join(home, ".openclaw");
-
-  if (process.platform === "win32") {
-    const match = home.match(/^([A-Za-z]:)(.*)$/);
-    if (match) {
-      process.env.HOMEDRIVE = match[1];
-      process.env.HOMEPATH = match[2] || "\\";
-    }
-  }
-
-  try {
-    return await fn(home);
-  } finally {
-    restoreHomeEnv(envSnapshot);
-  }
+  return withTempHomeHarness("openclaw-stream-", async (home) => {
+    await fs.mkdir(path.join(home, ".openclaw", "agents", "main", "sessions"), { recursive: true });
+    return fn(home);
+  });
 }
 
 describe("block streaming", () => {
-  beforeAll(async () => {
-    fixtureRoot = await fs.mkdtemp(path.join(os.tmpdir(), "openclaw-stream-"));
-  });
-
-  afterAll(async () => {
-    if (process.platform === "win32") {
-      await fs.rm(fixtureRoot, {
-        recursive: true,
-        force: true,
-        maxRetries: 10,
-        retryDelay: 50,
-      });
-    } else {
-      await fs.rm(fixtureRoot, {
-        recursive: true,
-        force: true,
-      });
-    }
-  });
-
   beforeEach(() => {
     vi.stubEnv("OPENCLAW_TEST_FAST", "1");
     piEmbeddedMock.abortEmbeddedPiRun.mockReset().mockReturnValue(false);
diff --git a/src/auto-reply/reply.media-note.test.ts b/src/auto-reply/reply.media-note.test.ts
index 2b88aa2af89..32ea5ecf551 100644
--- a/src/auto-reply/reply.media-note.test.ts
+++ b/src/auto-reply/reply.media-note.test.ts
@@ -1,19 +1,11 @@
 import path from "node:path";
+import "./reply.directive.directive-behavior.e2e-mocks.js";
 import { describe, expect, it, vi } from "vitest";
 import { withTempHome as withTempHomeBase } from "../../test/helpers/temp-home.js";
 import { runEmbeddedPiAgent } from "../agents/pi-embedded.js";
 import type { OpenClawConfig } from "../config/config.js";
 import { getReplyFromConfig } from "./reply.js";
 
-vi.mock("../agents/pi-embedded.js", () => ({
-  abortEmbeddedPiRun: vi.fn().mockReturnValue(false),
-  runEmbeddedPiAgent: vi.fn(),
-  queueEmbeddedPiMessage: vi.fn().mockReturnValue(false),
-  resolveEmbeddedSessionLane: (key: string) => `session:${key.trim() || "main"}`,
-  isEmbeddedPiRunActive: vi.fn().mockReturnValue(false),
-  isEmbeddedPiRunStreaming: vi.fn().mockReturnValue(false),
-}));
-
 function makeResult(text: string) {
   return {
     payloads: [{ text }],