fix(KB-503): address code review feedback for Step 1

- Add optional globalDir parameter to resolveProject(), getDefaultProject(),
  setDefaultProject(), and clearDefaultProject() for test isolation
- Remove ESLint suppression by using void operator for intentionally unused var
- Update all tests to use isolated globalDir parameter
- Complete tests for default project resolution

packages/dashboard/app/components/TaskComments.tsx

@@ -1,5 +1,5 @@
 import { useMemo, useState } from "react";
-import type { Task, TaskComment } from "@kb/core";
+import type { Task, TaskComment } from "@fusion/core";
 import { addTaskComment, updateTaskComment, deleteTaskComment } from "../api";
 import type { ToastType } from "../hooks/useToast";