Initial commit: Rampart v0.2.0

Multi-layer DDoS protection for Minecraft servers.

- rampart-core: Edge node with XDP/eBPF + Rust L7 filtering
- rampart-manager: REST API with JWT auth, Redis sync
- rampart-cli: CLI tool for operators
- velocity-plugin: Domain check, HMAC verify, server registry, load balancer
- paper-plugin: Auto-registration, heartbeat, HMAC verify
- dashboard: React + Vite web UI for management

dashboard/src/components/Servers.tsx

@@ -0,0 +1,86 @@
+import { useState, useEffect } from 'react'
+import { fetchServers, type Server } from '../api'
+
+function Servers() {
+  const [servers, setServers] = useState<Server[]>([])
+  const [error, setError] = useState('')
+  const [loading, setLoading] = useState(true)
+
+  useEffect(() => {
+    let cancelled = false
+
+    async function load() {
+      try {
+        const data = await fetchServers()
+        if (!cancelled) {
+          setServers(data)
+          setError('')
+        }
+      } catch (err: unknown) {
+        if (!cancelled) {
+          setError(err instanceof Error ? err.message : 'Failed to load servers')
+        }
+      } finally {
+        if (!cancelled) setLoading(false)
+      }
+    }
+
+    load()
+    const interval = setInterval(load, 10000)
+    return () => {
+      cancelled = true
+      clearInterval(interval)
+    }
+  }, [])
+
+  if (loading) return <div className="spinner" />
+
+  return (
+    <>
+      <h1>Servers</h1>
+      {error && <div className="error-msg">{error}</div>}
+      <div className="table-container">
+        <table>
+          <thead>
+            <tr>
+              <th>Name</th>
+              <th>Type</th>
+              <th>IP:Port</th>
+              <th>Status</th>
+              <th>Online/Max</th>
+              <th>TPS</th>
+              <th>Last Heartbeat</th>
+            </tr>
+          </thead>
+          <tbody>
+            {servers.length === 0 && (
+              <tr>
+                <td colSpan={7} style={{ textAlign: 'center', padding: '2rem', color: 'var(--text-secondary)' }}>
+                  No servers found
+                </td>
+              </tr>
+            )}
+            {servers.map((s) => (
+              <tr key={s.name}>
+                <td>{s.name}</td>
+                <td>{s.server_type}</td>
+                <td>{s.ip}:{s.port}</td>
+                <td>
+                  <span className="status-badge">
+                    <span className={`status-dot ${s.status === 'online' ? 'online' : 'offline'}`} />
+                    {s.status}
+                  </span>
+                </td>
+                <td>{s.online_players}/{s.max_players}</td>
+                <td>{s.tps.toFixed(1)}</td>
+                <td>{new Date(s.last_heartbeat).toLocaleString()}</td>
+              </tr>
+            ))}
+          </tbody>
+        </table>
+      </div>
+    </>
+  )
+}
+
+export default Servers