diff --git a/src/plugins/install.e2e.test.ts b/src/plugins/install.e2e.test.ts
index 4c6955ea27d..4bb235497bb 100644
--- a/src/plugins/install.e2e.test.ts
+++ b/src/plugins/install.e2e.test.ts
@@ -4,7 +4,7 @@ import os from "node:os";
 import path from "node:path";
 import JSZip from "jszip";
 import * as tar from "tar";
-import { afterEach, beforeEach, describe, expect, it, vi } from "vitest";
+import { afterEach, beforeAll, beforeEach, describe, expect, it, vi } from "vitest";
 import * as skillScanner from "../security/skill-scanner.js";
 import {
   expectSingleNpmInstallIgnoreScriptsCall,
@@ -16,6 +16,10 @@ vi.mock("../process/exec.js", () => ({
 }));
 
 const tempDirs: string[] = [];
+let installPluginFromArchive: typeof import("./install.js").installPluginFromArchive;
+let installPluginFromDir: typeof import("./install.js").installPluginFromDir;
+let installPluginFromNpmSpec: typeof import("./install.js").installPluginFromNpmSpec;
+let runCommandWithTimeout: typeof import("../process/exec.js").runCommandWithTimeout;
 
 function makeTempDir() {
   const dir = path.join(os.tmpdir(), `openclaw-plugin-install-${randomUUID()}`);
@@ -120,7 +124,6 @@ function setupPluginInstallDirs() {
 }
 
 async function installFromDirWithWarnings(params: { pluginDir: string; extensionsDir: string }) {
-  const { installPluginFromDir } = await import("./install.js");
   const warnings: string[] = [];
   const result = await installPluginFromDir({
     dirPath: params.pluginDir,
@@ -159,7 +162,6 @@ async function expectArchiveInstallReservedSegmentRejection(params: {
   });
 
   const extensionsDir = path.join(stateDir, "extensions");
-  const { installPluginFromArchive } = await import("./install.js");
   const result = await installPluginFromArchive({
     archivePath,
     extensionsDir,
@@ -182,6 +184,12 @@ afterEach(() => {
   }
 });
 
+beforeAll(async () => {
+  ({ installPluginFromArchive, installPluginFromDir, installPluginFromNpmSpec } =
+    await import("./install.js"));
+  ({ runCommandWithTimeout } = await import("../process/exec.js"));
+});
+
 beforeEach(() => {
   vi.clearAllMocks();
 });
@@ -193,7 +201,6 @@ describe("installPluginFromArchive", () => {
       version: "0.0.1",
     });
 
-    const { installPluginFromArchive } = await import("./install.js");
     const result = await installPluginFromArchive({
       archivePath,
       extensionsDir,
@@ -212,7 +219,6 @@ describe("installPluginFromArchive", () => {
       version: "0.0.1",
     });
 
-    const { installPluginFromArchive } = await import("./install.js");
     const first = await installPluginFromArchive({
       archivePath,
       extensionsDir,
@@ -249,7 +255,6 @@ describe("installPluginFromArchive", () => {
     fs.writeFileSync(archivePath, buffer);
 
     const extensionsDir = path.join(stateDir, "extensions");
-    const { installPluginFromArchive } = await import("./install.js");
     const result = await installPluginFromArchive({
       archivePath,
       extensionsDir,
@@ -278,7 +283,6 @@ describe("installPluginFromArchive", () => {
     });
 
     const extensionsDir = path.join(stateDir, "extensions");
-    const { installPluginFromArchive } = await import("./install.js");
     const first = await installPluginFromArchive({
       archivePath: archiveV1,
       extensionsDir,
@@ -332,7 +336,6 @@ describe("installPluginFromArchive", () => {
     });
 
     const extensionsDir = path.join(stateDir, "extensions");
-    const { installPluginFromArchive } = await import("./install.js");
     const result = await installPluginFromArchive({
       archivePath,
       extensionsDir,
@@ -433,7 +436,6 @@ describe("installPluginFromDir", () => {
     );
     fs.writeFileSync(path.join(pluginDir, "dist", "index.js"), "export {};", "utf-8");
 
-    const { runCommandWithTimeout } = await import("../process/exec.js");
     const run = vi.mocked(runCommandWithTimeout);
     run.mockResolvedValue({
       code: 0,
@@ -444,7 +446,6 @@ describe("installPluginFromDir", () => {
       termination: "exit",
     });
 
-    const { installPluginFromDir } = await import("./install.js");
     const res = await installPluginFromDir({
       dirPath: pluginDir,
       extensionsDir: path.join(stateDir, "extensions"),
@@ -480,7 +481,6 @@ describe("installPluginFromNpmSpec", () => {
     const extensionsDir = path.join(stateDir, "extensions");
     fs.mkdirSync(extensionsDir, { recursive: true });
 
-    const { runCommandWithTimeout } = await import("../process/exec.js");
     const run = vi.mocked(runCommandWithTimeout);
 
     let packTmpDir = "";
@@ -510,7 +510,6 @@ describe("installPluginFromNpmSpec", () => {
       throw new Error(`unexpected command: ${argv.join(" ")}`);
     });
 
-    const { installPluginFromNpmSpec } = await import("./install.js");
     const result = await installPluginFromNpmSpec({
       spec: "@openclaw/voice-call@0.0.1",
       extensionsDir,
@@ -533,7 +532,6 @@ describe("installPluginFromNpmSpec", () => {
   });
 
   it("rejects non-registry npm specs", async () => {
-    const { installPluginFromNpmSpec } = await import("./install.js");
     const result = await installPluginFromNpmSpec({ spec: "github:evil/evil" });
     expect(result.ok).toBe(false);
     if (result.ok) {
@@ -543,7 +541,6 @@ describe("installPluginFromNpmSpec", () => {
   });
 
   it("aborts when integrity drift callback rejects the fetched artifact", async () => {
-    const { runCommandWithTimeout } = await import("../process/exec.js");
     const run = vi.mocked(runCommandWithTimeout);
     run.mockResolvedValue({
       code: 0,
@@ -564,7 +561,6 @@ describe("installPluginFromNpmSpec", () => {
     });
 
     const onIntegrityDrift = vi.fn(async () => false);
-    const { installPluginFromNpmSpec } = await import("./install.js");
     const result = await installPluginFromNpmSpec({
       spec: "@openclaw/voice-call@0.0.1",
       expectedIntegrity: "sha512-old",
diff --git a/src/plugins/wired-hooks-after-tool-call.e2e.test.ts b/src/plugins/wired-hooks-after-tool-call.e2e.test.ts
index d0c74e7f4cf..dae8cb74469 100644
--- a/src/plugins/wired-hooks-after-tool-call.e2e.test.ts
+++ b/src/plugins/wired-hooks-after-tool-call.e2e.test.ts
@@ -1,7 +1,7 @@
 /**
  * Test: after_tool_call hook wiring (pi-embedded-subscribe.handlers.tools.ts)
  */
-import { beforeEach, describe, expect, it, vi } from "vitest";
+import { beforeAll, beforeEach, describe, expect, it, vi } from "vitest";
 
 const hookMocks = vi.hoisted(() => ({
   runner: {
@@ -58,7 +58,15 @@ function createToolHandlerCtx(params: {
   };
 }
 
+let handleToolExecutionStart: typeof import("../agents/pi-embedded-subscribe.handlers.tools.js").handleToolExecutionStart;
+let handleToolExecutionEnd: typeof import("../agents/pi-embedded-subscribe.handlers.tools.js").handleToolExecutionEnd;
+
 describe("after_tool_call hook wiring", () => {
+  beforeAll(async () => {
+    ({ handleToolExecutionStart, handleToolExecutionEnd } =
+      await import("../agents/pi-embedded-subscribe.handlers.tools.js"));
+  });
+
   beforeEach(() => {
     hookMocks.runner.hasHooks.mockReset();
     hookMocks.runner.hasHooks.mockReturnValue(false);
@@ -71,9 +79,6 @@ describe("after_tool_call hook wiring", () => {
   it("calls runAfterToolCall in handleToolExecutionEnd when hook is registered", async () => {
     hookMocks.runner.hasHooks.mockReturnValue(true);
 
-    const { handleToolExecutionEnd, handleToolExecutionStart } =
-      await import("../agents/pi-embedded-subscribe.handlers.tools.js");
-
     const ctx = createToolHandlerCtx({
       runId: "test-run-1",
       agentId: "main",
@@ -125,9 +130,6 @@ describe("after_tool_call hook wiring", () => {
   it("includes error in after_tool_call event on tool failure", async () => {
     hookMocks.runner.hasHooks.mockReturnValue(true);
 
-    const { handleToolExecutionEnd, handleToolExecutionStart } =
-      await import("../agents/pi-embedded-subscribe.handlers.tools.js");
-
     const ctx = createToolHandlerCtx({ runId: "test-run-2" });
 
     await handleToolExecutionStart(
@@ -166,9 +168,6 @@ describe("after_tool_call hook wiring", () => {
   it("does not call runAfterToolCall when no hooks registered", async () => {
     hookMocks.runner.hasHooks.mockReturnValue(false);
 
-    const { handleToolExecutionEnd } =
-      await import("../agents/pi-embedded-subscribe.handlers.tools.js");
-
     const ctx = createToolHandlerCtx({ runId: "r" });
 
     await handleToolExecutionEnd(