fix: correct type mismatch in observe-only tests and wrap long line

- Fix bus.Peer used where *routing.RoutePeer is expected in loop_test.go
- Wrap 127-char ObserveGroupMessage call in telegram.go to satisfy golines

https://claude.ai/code/session_01BEyzHEY8t2ghPnfr5WsSRB

pkg/agent/loop_test.go

@@ -3482,7 +3482,7 @@ func TestObserveOnlyMessage_DoesNotRespondEvenWithContinuation(t *testing.T) {
 	// Confirm history accumulated
 	route := al.registry.ResolveRoute(routing.RouteInput{
 		Channel: "slack",
-		Peer:    bus.Peer{Kind: "channel", ID: "channel1"},
+		Peer:    &routing.RoutePeer{Kind: "channel", ID: "channel1"},
 	})
 	defaultAgent := al.registry.GetDefaultAgent()
 	if defaultAgent == nil {

pkg/channels/telegram/telegram.go

@@ -715,7 +715,10 @@ func (c *TelegramChannel) handleMessage(ctx context.Context, message *telego.Mes
 				"first_name": user.FirstName,
 				"is_group":   "true",
 			}
-			c.ObserveGroupMessage(ctx, observePeer, messageIDStr, platformID, compositeChatID, content, mediaPaths, observeMeta, sender)
+			c.ObserveGroupMessage(
+				ctx, observePeer, messageIDStr, platformID,
+				compositeChatID, content, mediaPaths, observeMeta, sender,
+			)
 			return nil
 		}
 		content = cleaned