feat(plan): listPlanUsers with role/permission filter

src/__tests__/plan.test.ts

@@ -1,6 +1,10 @@
 import { describe, it, expect, beforeAll, afterAll, beforeEach } from "vitest";
 import prisma from "../config/database";
-import { resolveCell, resolveGrid } from "../services/plan.service";
+import {
+  resolveCell,
+  resolveGrid,
+  listPlanUsers,
+} from "../services/plan.service";
 
 // ---------------------------------------------------------------------------
 // Test fixtures
@@ -170,3 +174,16 @@ describe("plan.service.resolveGrid", () => {
     expect(cells[adminUserId]["2099-06-03"]?.note).toBe(`${N}A`);
   });
 });
+
+// ---------------------------------------------------------------------------
+// listPlanUsers
+// ---------------------------------------------------------------------------
+
+describe("plan.service.listPlanUsers", () => {
+  it("returns at least the admin user", async () => {
+    const users = await listPlanUsers();
+    const found = users.find((u) => u.id === adminUserId);
+    expect(found).toBeDefined();
+    expect(found?.has_attendance_record).toBe(true);
+  });
+});