Replace echo -e with printf for portable ANSI banners

dash (Debian's /bin/sh) doesn't support echo's -e flag: it prints "-e"
literally as text before processing the rest of the string's backslash
escapes. Every script's colored banner was affected. printf's escape
handling is POSIX-mandated and behaves identically under dash and bash,
so swap all 90 echo -e calls for printf, appending the trailing \n that
echo used to add implicitly.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

bin/ssh.sh

@@ -1,13 +1,13 @@
 #!/bin/sh
 
 
-echo -e '\033[35m
+printf '\033[35m
    __________ __  __
   / ___/ ___// / / /
   \__ \\__ \/ /_/ /
  ___/ /__/ / __  /
 /____/____/_/ /_/
-\033[0m'
+\033[0m\n'
 
 if [ "$(id -u)" -ne 0 ]; then
   echo "Please run as root"
@@ -23,4 +23,4 @@ echo "PermitRootLogin no" >> /etc/ssh/sshd_config.d/custom.conf
 echo "PermitEmptyPasswords no" >> /etc/ssh/sshd_config.d/custom.conf
 
 systemctl reload ssh
-echo -e "\033[92;1mSSH secured\033[Om"
+printf "\033[92;1mSSH secured\033[Om\n"