Improve application responsiveness and background processing

tests/unit/native-hosts.test.ts

@@ -15,6 +15,24 @@ async function enrolled() {
 }
 
 describe('native host enrollment and scoped authentication', () => {
+    it('separates observation and mutation delivery and wakes long polls on newly queued work', async () => {
+        const api = await enrolled();
+        const inspect = api.queueHostOperation(api.host.id, 'host.inspect', {});
+        const restart = api.queueHostOperation(api.host.id, 'instance.restart', {});
+        const status = api.queueHostOperation(api.host.id, 'rcon.execute', { command: 'status' });
+        const command = api.queueHostOperation(api.host.id, 'rcon.execute', { command: 'map_restart' });
+        expect(api.pendingHostOperations(api.host.id, 'read').map(op => op.id).sort()).toEqual([inspect.id, status.id].sort());
+        expect(api.pendingHostOperations(api.host.id, 'write').map(op => op.id).sort()).toEqual([restart.id, command.id].sort());
+        // Let earlier enqueue notifications finish before subscribing.
+        await Promise.resolve();
+        const controller = new AbortController();
+        const waiting = api.waitForHostWork(api.host.id, controller.signal, 20_000);
+        api.queueHostOperation(api.host.id, 'host.inspect', {});
+        await waiting;
+        const aborted = api.waitForHostWork(api.host.id, controller.signal, 20_000);
+        controller.abort();
+        await aborted;
+    });
     it('consumes an enrollment exactly once and stores only credential hashes', async () => {
         const api = await enrolled();
         expect(api.authenticateCredential(api.credentials.credential)?.id).toBe(api.host.id);