Lighten library cache reports and heartbeat cleanup

tests/unit/host-preparation.test.ts

@@ -68,6 +68,23 @@ function verified(id: string, version: GameLibraryVersion) {
 }
 
 describe('automatic host preparation', () => {
+    it('accepts heartbeats without running controller library cleanup', async () => {
+        const host = hosts.createHost({ name: 'Heartbeat host' });
+        const { credential } = hosts.enrollHost(hosts.createEnrollment(host.id).token, inventory);
+        const { POST } = await import('../../src/routes/api/agent/heartbeat/+server.js');
+        const cleanup = vi.spyOn(libraries, 'cleanupControllerLibraries').mockRejectedValue(new Error('Cleanup is independent of heartbeats'));
+        try {
+            for (let i = 0; i < 3; i++) {
+                const response = await POST({ request: new Request('https://controller.test/api/agent/heartbeat', {
+                    method: 'POST', headers: { Authorization: `Bearer ${credential}`, 'Content-Type': 'application/json' },
+                    body: JSON.stringify({ inventory: { ...inventory, libraryCaches: [] } })
+                }) });
+                expect(response.status).toBe(200);
+            }
+            expect(cleanup).not.toHaveBeenCalled();
+        } finally { cleanup.mockRestore(); }
+    });
+
     it('keeps re-enabled hosts disabled until a fresh runtime pull and both game libraries are verified', async () => {
         const t5 = await publish('t5');
         const t6 = await publish('t6');