feat: add IPAM discovery from Proxmox with IP enrichment, improve workload insights, and enhance DataTable interactivity

Add /ipam/discover endpoint to automatically import IP addresses from Proxmox clusters with error tracking and audit logging, implement ensure_discovered_network helper to create "discovered-ipam" network for auto-discovered IPs, add import_discovered_ips function to parse IP interfaces and create subnet/address records with assignment tracking, enhance ProxmoxProvider.enrich_work

frontend/src/pages/Ipam.tsx

@@ -13,6 +13,7 @@ export function Ipam() {
   const networks = useQuery({ queryKey: ["networks"], queryFn: () => api<Network[]>("/networks") });
   const subnets = useQuery({ queryKey: ["subnets"], queryFn: () => api<Subnet[]>("/ipam/subnets") });
   const addresses = useQuery({ queryKey: ["addresses"], queryFn: () => api<IpAddress[]>("/ipam/addresses") });
+  const [message, setMessage] = useState("");
   const [subnetForm, setSubnetForm] = useState({ network_id: "", cidr: "10.50.0.0/24", gateway: "10.50.0.1", dns: ["10.50.0.10"], dhcp_enabled: false });
   const [ipForm, setIpForm] = useState({ subnet_id: "", address: "10.50.0.20", status: "reserved", note: "" });
   const [subnetOpen, setSubnetOpen] = useState(false);
@@ -21,16 +22,20 @@ export function Ipam() {
   const createSubnet = useMutation({
     mutationFn: () => api<Subnet>("/ipam/subnets", { method: "POST", body: JSON.stringify({ ...subnetForm, network_id: subnetForm.network_id || networks.data?.[0]?.id }) }),
     onSuccess: () => {
+      setMessage("Subnet created.");
       setSubnetOpen(false);
       queryClient.invalidateQueries({ queryKey: ["subnets"] });
     },
+    onError: (error) => setMessage(error instanceof Error ? error.message : "Subnet creation failed."),
   });
   const createIp = useMutation({
     mutationFn: () => api<IpAddress>("/ipam/addresses", { method: "POST", body: JSON.stringify({ ...ipForm, subnet_id: ipForm.subnet_id || subnets.data?.[0]?.id }) }),
     onSuccess: () => {
+      setMessage("IP address saved.");
       setIpOpen(false);
       queryClient.invalidateQueries({ queryKey: ["addresses"] });
     },
+    onError: (error) => setMessage(error instanceof Error ? error.message : "IP reservation failed."),
   });
 
   async function submitSubnet(event: FormEvent) {
@@ -56,6 +61,17 @@ export function Ipam() {
     URL.revokeObjectURL(url);
   }
 
+  async function discoverIpam() {
+    try {
+      const result = await api<{ imported: number; errors: Array<Record<string, unknown>> }>("/ipam/discover", { method: "POST" });
+      setMessage(`Discovery imported ${result.imported} IP addresses${result.errors.length ? " with errors" : ""}.`);
+      await queryClient.invalidateQueries({ queryKey: ["subnets"] });
+      await queryClient.invalidateQueries({ queryKey: ["addresses"] });
+    } catch (error) {
+      setMessage(error instanceof Error ? error.message : "IPAM discovery failed.");
+    }
+  }
+
   return (
     <>
       <PageHeader title="IPAM" subtitle="Manage subnets, reservations, assignments, conflicts, and export state." />
@@ -63,8 +79,10 @@ export function Ipam() {
         <div className="flex flex-wrap gap-2">
           <button className={buttonClass} onClick={() => setSubnetOpen(true)}><Plus size={16} /> Add Subnet</button>
           <button className={buttonClass} onClick={() => setIpOpen(true)}><Plus size={16} /> Reserve IP</button>
+          <button className={secondaryButtonClass} onClick={discoverIpam}>Discover from Proxmox</button>
           <button className={secondaryButtonClass} onClick={exportCsv}><Download size={16} /> Export CSV</button>
         </div>
+        {message ? <div className="rounded-md border border-border bg-panel p-3 text-sm">{message}</div> : null}
         <Modal title="Add Subnet" open={subnetOpen} onClose={() => setSubnetOpen(false)}>
           <form onSubmit={submitSubnet}>
           <div className="mb-4 flex items-center gap-2 font-medium"><Database size={18} /> Add Subnet</div>
@@ -103,6 +121,7 @@ export function Ipam() {
           </form>
         </Modal>
         <section className="space-y-4">
+          <DataTable rows={(subnets.data ?? []) as unknown as Record<string, unknown>[]} columns={[{ key: "cidr", label: "Subnet" }, { key: "gateway", label: "Gateway" }, { key: "dhcp_enabled", label: "DHCP" }]} />
           <DataTable rows={(addresses.data ?? []) as unknown as Record<string, unknown>[]} columns={[{ key: "address", label: "Address" }, { key: "status", label: "Status" }, { key: "note", label: "Note" }]} />
         </section>
       </div>