diff --git a/internal/tasksws/client.go b/internal/tasksws/client.go
index 92c68cc..b46e7d6 100644
--- a/internal/tasksws/client.go
+++ b/internal/tasksws/client.go
@@ -111,6 +111,12 @@ func (c *Client) session(ctx context.Context, since *int64) error {
 	defer conn.Close()
 
 	_ = conn.SetReadDeadline(time.Now().Add(90 * time.Second))
+	// Server sends Ping; gorilla delivers it as Ping (not Pong). Reset deadline or
+	// idle boards die every ~90s with "i/o timeout" despite healthy pings.
+	conn.SetPingHandler(func(appData string) error {
+		_ = conn.SetReadDeadline(time.Now().Add(90 * time.Second))
+		return conn.WriteControl(websocket.PongMessage, []byte(appData), time.Now().Add(10*time.Second))
+	})
 	conn.SetPongHandler(func(string) error {
 		_ = conn.SetReadDeadline(time.Now().Add(90 * time.Second))
 		return nil
@@ -146,9 +152,13 @@ func (c *Client) session(ctx context.Context, since *int64) error {
 			*since = ev.Seq
 		}
 		if c.OnEvent != nil {
-			if err := c.OnEvent(ctx, ev); err != nil && c.Log != nil {
-				c.Log.Warn("tasks ws handler", "error", err, "type", ev.Type)
-			}
+			ev := ev
+			hctx := context.WithoutCancel(ctx)
+			go func() {
+				if err := c.OnEvent(hctx, ev); err != nil && c.Log != nil {
+					c.Log.Warn("tasks ws handler", "error", err, "type", ev.Type)
+				}
+			}()
 		}
 	}
 }