feat: RDG 302/303 display path labels and RDS session break (0.3.1)

Show RDS access via RDG-Comp or Haproxy-RDG-Comp, enable qwinsta/logoff on any RDG event with internal_ip.

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

backend/app/config.py

@@ -106,6 +106,8 @@ class Settings(BaseSettings):
     sac_rdg_flap_window_min_sec: int = 1
     sac_rdg_flap_window_max_sec: int = 10
     sac_rdg_flap_dedup_sec: int = 30
+    # Внешние IP HAProxy/RDG-прокси: если external_ip в списке — путь Haproxy-RDG-Comp, иначе RDG-Comp
+    sac_rdg_haproxy_external_ips: str = ""
 
     # Windows admin for agent qwinsta/logoff (domain-wide)
     sac_win_admin_user: str = ""