feat(desktop&tenant): Enhance desktop account and task consumer presence management

- Added new fields to DesktopAccountInfo for tracking account session and task consumer online status, along with queued publish task count and oldest queued publish task timestamp.
- Updated DesktopDispatchEvent to include server time for better synchronization.
- Implemented separate presence management for task consumers, including marking presence and loading presence state.
- Enhanced DesktopAccountService to apply publish queue summaries and manage task consumer presence.
- Introduced new methods for replaying queued publish tasks in DesktopDispatchHandler.
- Updated tests to cover new presence management logic and ensure correct behavior of account session and task consumer online status.

server/internal/tenant/app/desktop_presence_test.go

@@ -84,3 +84,30 @@ func TestDesktopUserOnlineClientCountPrunesStaleRedisPresence(t *testing.T) {
 	require.True(t, ok)
 	assert.Equal(t, 1, count)
 }
+
+func TestDesktopTaskConsumerPresenceIsSeparateFromHeartbeatPresence(t *testing.T) {
+	ctx := context.Background()
+	server := miniredis.RunT(t)
+	redis := goredis.NewClient(&goredis.Options{Addr: server.Addr()})
+	t.Cleanup(func() {
+		require.NoError(t, redis.Close())
+	})
+
+	clientID := uuid.New()
+
+	markDesktopClientPresent(ctx, redis, clientID)
+
+	clientPresence := loadDesktopClientPresence(ctx, redis, []uuid.UUID{clientID})
+	taskConsumerPresence := loadDesktopTaskConsumerPresence(ctx, redis, []uuid.UUID{clientID})
+
+	require.NotNil(t, clientPresence)
+	require.NotNil(t, taskConsumerPresence)
+	assert.True(t, clientPresence[clientID])
+	assert.False(t, taskConsumerPresence[clientID])
+
+	markDesktopTaskConsumerPresent(ctx, redis, clientID)
+	taskConsumerPresence = loadDesktopTaskConsumerPresence(ctx, redis, []uuid.UUID{clientID})
+
+	require.NotNil(t, taskConsumerPresence)
+	assert.True(t, taskConsumerPresence[clientID])
+}