test(FN-4904): cover worktree-root lookup in extension tools

Fusion-Task-Id: FN-4904
Fusion-Task-Lineage: 5da52c8c-0ed6-4e3a-920e-aa1b56d0b719

packages/cli/src/__tests__/extension-experiment-finalize.test.ts

@@ -32,6 +32,7 @@ vi.mock("@fusion/core", () => ({
   formatRoleMismatchReason: vi.fn(() => ""),
   resolveAgentProvisioningPolicy: vi.fn(() => ({ approvalMode: "auto" })),
   TASK_PRIORITIES: ["low", "normal", "high", "urgent"],
+  getProjectRootFromWorktree: vi.fn(() => null),
 }));
 
 vi.mock("@fusion/dashboard", () => ({

packages/cli/src/__tests__/extension-task-tools.test.ts

@@ -2,16 +2,6 @@ import { describe, expect, it, vi } from "vitest";
 import { mkdtemp, mkdir, rm } from "node:fs/promises";
 import { tmpdir } from "node:os";
 import { join } from "node:path";
-
-vi.mock("@fusion/dashboard", () => ({
-  registerGithubTrackingHook: vi.fn(),
-}));
-
-vi.mock("@fusion/engine", () => ({
-  createFnAgent: vi.fn(),
-  fetchWebContent: vi.fn(),
-}));
-
 import kbExtension from "../extension.js";
 import { TaskStore } from "@fusion/core";