[client] Fix file drop delivery and refine the files UI

Seed the delivery directory from the IPC caller when the active profile
carries no username, so the default profile gets a destination instead of
failing every incoming transfer. Deliver text-only offers without requiring
a destination directory at all.

In the UI, drop the status label from the send picker rows, keep the dot,
and give the transfer list per-kind icons: a quote for text, a file with an
up or down arrow for files.

client/server/server.go

@@ -2495,7 +2495,7 @@ func (s *Server) connect(ctx context.Context, config *profilemanager.Config, sta
 	client.SetUpdateManager(s.updateManager)
 	client.SetSyncResponsePersistence(s.persistSyncResponse)
 
-	if mgr, err := s.fileDropManager(); err != nil {
+	if mgr, err := s.fileDropManager(ctx); err != nil {
 		log.Warnf("file drop is unavailable: %v", err)
 	} else {
 		client.SetFileDropManager(mgr)