addition of new dashboard

backend/modules/dashboard/storage.test.js

@@ -0,0 +1,30 @@
+import { jest } from "@jest/globals";
+
+const query = jest.fn();
+const release = jest.fn(async () => {});
+jest.unstable_mockModule("../../db/index.js", () => ({ getPool: async () => ({ query, release }) }));
+
+const { getStorage } = await import("./storage.js");
+
+beforeEach(() => {
+  query.mockReset();
+  release.mockClear();
+});
+
+describe("getStorage (core + audit in one query)", () => {
+  it("runs a single query and shapes on-disk/logical core/audit/total byte totals", async () => {
+    query.mockResolvedValue({
+      rows: [{ core_on_disk: "100", core_logical: "120", audit_on_disk: "50", audit_logical: "60" }],
+    });
+
+    const out = await getStorage(7);
+
+    expect(query).toHaveBeenCalledTimes(1); // combined round-trip
+    expect(query.mock.calls[0][1]).toEqual([7]);
+    expect(out).toEqual({
+      onDisk: { core: 100, audit: 50, total: 150 },
+      logical: { core: 120, audit: 60, total: 180 },
+    });
+    expect(release).toHaveBeenCalledTimes(1);
+  });
+});