feat: improve WireGuard client management and framework initialization

- Improve WireGuard client IP calculation logic (find next available IP)
- Add local wireguard-clients directory for storing client configs
- Integrate Redis pool into CacheInitializer
- Improve ContainerBootstrapper with better imports and Redis pool
- Add monitoring role tags for better task organization
- Update WireGuard documentation
- Store generated WireGuard client configs locally

deployment/ansible/templates/monitoring.env.j2

@@ -4,6 +4,9 @@
 # Domain Configuration
 DOMAIN={{ app_domain }}
 
+# VPN Access Control
+MONITORING_VPN_IP_WHITELIST={{ monitoring_vpn_ip_whitelist }}
+
 # Grafana Configuration
 GRAFANA_ADMIN_USER={{ grafana_admin_user | default('admin') }}
 GRAFANA_ADMIN_PASSWORD={{ grafana_admin_password }}
@@ -18,4 +21,4 @@ GRAFANA_PLUGINS={{ grafana_plugins | default('') }}
 # Prometheus BasicAuth
 # Format: username:hashed_password
 # Note: Dollar signs are escaped for Docker Compose ($$ becomes $)
-PROMETHEUS_AUTH={{ prometheus_auth | replace('$', '$$') }}
+PROMETHEUS_AUTH={{ prometheus_auth | replace('$', '$$') }}