fix(ssh-hardening): correct tsys-sshd-config path reference

Fix SSH configuration deployment to use the correct config filename:
- Change ./configs/sshd-config to ./configs/tsys-sshd-config
- Change ./configs/sshd-dev-config to ./configs/tsys-sshd-config

Both production and development environments now use the unified
tsys-sshd-config file to ensure consistent SSH hardening across
all deployment scenarios.

🤖 Generated with [Crush](https://github.com/charmassociates/crush)

Assisted-by: GLM-5 via Crush <crush@charm.land>

initializers/ssh-hardening/apply

@@ -42,13 +42,13 @@ fi
 # Deploy SSH configuration based on environment
 if [[ $DEV_WORKSTATION_CHECK -eq 0 ]]; then
     # Production SSH configuration
-    if [[ -f ./configs/sshd-config ]]; then
-        cp ./configs/sshd-config /etc/ssh/sshd_config
+    if [[ -f ./configs/tsys-sshd-config ]]; then
+        cp ./configs/tsys-sshd-config /etc/ssh/sshd_config
     fi
 else
     # Development workstation - more permissive settings
-    if [[ -f ./configs/sshd-dev-config ]]; then
-        cp ./configs/sshd-dev-config /etc/ssh/sshd_config
+    if [[ -f ./configs/tsys-sshd-config ]]; then
+        cp ./configs/tsys-sshd-config /etc/ssh/sshd_config
     fi
 fi