Wire Hysteria 2 UI with per-server SSL defaults and renew.

Expose domain/email on servers, warn that TCP 80/443 must be free on install, and allow Let's Encrypt re-issue from Hysteria settings.

Co-authored-by: Cursor <cursoragent@cursor.com>

managers/backup_manager.py

@@ -62,6 +62,10 @@ class BackupManager:
             remote_dir = inst_path('/opt/amnezia/telemt')
             paths['host'] = [remote_dir]
             paths['container'] = [remote_dir]
+        elif base == 'hysteria':
+            remote_dir = inst_path('/opt/amnezia/hysteria')
+            paths['host'] = [remote_dir]
+            paths['container'] = ['/etc/hysteria']
         elif base == 'dns':
             paths['host'] = ['/opt/amnezia/dns']
             paths['container'] = ['/opt/amnezia/dns']