Fix EZ-Homelab scripts for successful fresh installs

- Fix Authelia config template paths (/data/ -> /config/)
- Add secret placeholder replacement in deploy script
- Add user database placeholder replacement
- Add automatic dashboard stack deployment (Homepage, Homarr)
- Remove incorrect Portainer reference from infrastructure log
- Update deployment steps and final summary

config-templates/authelia/configuration.yml

@@ -73,9 +73,9 @@ regulation:
 storage:
   encryption_key: ${AUTHELIA_STORAGE_ENCRYPTION_KEY}
   local:
-    path: /data/db.sqlite3
+    path: /config/db.sqlite3
 
 notifier:
   # File-based notifications (for development/testing)
   filesystem:
-    filename: /data/notification.txt
+    filename: /config/notification.txt