fix: agent update runs as root when it can (sudo without a password otherwise), checks the download, restarts reliably and reports its result; one-colour file icons; zip and delete on one line on phones; PIN buttons alike; no key fingerprint in the SSH status; corner plus clears split panes

internal/agent/ssh.go

@@ -244,7 +244,7 @@ func (a *Agent) runSSH(parent context.Context, sid string, t proto.SSHTarget) {
 		}
 	}()
 	log.Printf("ssh %s: %s@%s up (host key %s)", sid, t.User, addr, fp)
-	status(proto.SSHOK, t.User+"@"+addr+" · "+fp)
+	status(proto.SSHOK, t.User+"@"+addr)
 	a.bridgeStream(parent, sid, sh, sh.Resize)
 	log.Printf("ssh %s: ended", sid)
 }