replace per-app deploy scripts with generic deploy.sh

Dispatch now validates the command format and routes to a single
deploy.sh that handles any app. This fixes first-deploy failures
for new apps (dispatch no longer needs a static case list) and
simplifies new-app.sh (no deploy script or dispatch update needed).

Also adds input validation to new-app.sh, set -euo pipefail to
deploy scripts, and dnf module reset before nodejs install.

scripts/deploy-dispatch.sh

@@ -1,12 +1,9 @@
 #!/bin/bash
 set -euo pipefail
 
-case "$SSH_ORIGINAL_COMMAND" in
-    deploy-nginx)       sudo /opt/hantim/scripts/deploy-nginx.sh ;;
-    deploy-timothykim)  sudo /opt/hantim/scripts/deploy-timothykim.sh ;;
-    *)
-        echo "Unknown command: $SSH_ORIGINAL_COMMAND"
-        echo "Available: deploy-nginx, deploy-timothykim"
-        exit 1
-        ;;
-esac
+if [[ "$SSH_ORIGINAL_COMMAND" =~ ^deploy-[a-zA-Z0-9._-]+$ ]]; then
+    sudo /opt/hantim/scripts/deploy.sh "$SSH_ORIGINAL_COMMAND"
+else
+    echo "Unknown command: $SSH_ORIGINAL_COMMAND"
+    exit 1
+fi