feat: add container network filtering, enhance IP address display, and improve workload insights UI

Add is_docker_or_container_network helper to detect Docker bridge, Kubernetes CNI, and loopback networks, implement cleanup_discovered_container_networks to remove container bridge IPs from discovered networks during IPAM discovery, add ip_address_payload helper to enrich IP addresses with subnet CIDR and workload details, update ProxmoxProvider to ignore guest interfaces matching common container pref

backend/app/services/providers/proxmox.py

@@ -7,6 +7,17 @@ from app.services.providers.base import Provider, ProviderConnection
 
 class ProxmoxProvider(Provider):
     name = "proxmox"
+    ignored_guest_interface_prefixes = (
+        "br-",
+        "cali",
+        "cni",
+        "docker",
+        "flannel",
+        "kube",
+        "lo",
+        "veth",
+        "virbr",
+    )
 
     def auth_header(self, token: str) -> str:
         token = token.strip()
@@ -67,6 +78,9 @@ class ProxmoxProvider(Provider):
                     return
                 interfaces = response.json().get("data", {}).get("result", [])
                 for interface in interfaces:
+                    interface_name = str(interface.get("name") or "").lower()
+                    if interface_name.startswith(self.ignored_guest_interface_prefixes):
+                        continue
                     for address in interface.get("ip-addresses", []):
                         ip_address = address.get("ip-address")
                         prefix = address.get("prefix")