fix(agent): propagate SenderID in AgentEvent emitters

Expose the original acting sender ID in agent events so group-chat
telemetry and audit logs stay aligned with the real Telegram user
instead of only the group-scoped UserID.

internal/agent/loop_run.go

@@ -26,6 +26,7 @@ func (l *Loop) Run(ctx context.Context, req RunRequest) (*RunResult, error) {
 		event.TeamID = req.TeamID
 		event.TeamTaskID = req.TeamTaskID
 		event.ParentAgentID = req.ParentAgentID
+		event.SenderID = req.SenderID
 		event.UserID = req.UserID
 		event.Channel = req.Channel
 		event.ChatID = req.ChatID