feat: WireGuard (server + client + peers + QR) + shared UI components

WireGuard
---------
* Migration 0013: wireguard_interfaces (server|client mode, key envelope-
  encrypted) + wireguard_peers (per-server roster). Drop old empty
  0005-Schema (Option-A peer_type, kein Iface-FK), neuer Aufbau mit
  zwei Tabellen + FK.
* internal/services/secrets: Box mit AES-256-GCM, Master-Key in
  /var/lib/edgeguard/.master_key (lazy-create, 0600). Sealed/Open
  für PrivateKey + PSK.
* internal/services/wireguard: KeyGen (Curve25519 mit clamping),
  PublicFromPrivate (für Import), InterfacesRepo, PeersRepo, Importer
  (parst /etc/wireguard/*.conf, server vs. client heuristisch nach
  ListenPort + Peer-Anzahl).
* internal/wireguard: Renderer schreibt /etc/edgeguard/wireguard/<iface>.conf
  (0600), restartet wg-quick@<iface> via sudo (sudoers im postinst
  erweitert). Idempotent — re-render nur wenn content geändert.
* internal/handlers/wireguard.go: REST CRUD für interfaces+peers,
  /generate-keypair, /peers/:id/config (text/plain wg-quick conf),
  /peers/:id/qr (PNG via go-qrcode). Auto-reload nach Mutation.
* edgeguard-ctl wg-import [--path /etc/wireguard]: liest existierende
  conf-Files in die DB. Idempotent (überspringt vorhandene Iface-Namen).

Shared UI components (proxy-lb-waf design pattern)
--------------------------------------------------
* PageHeader: icon + title + subtitle + extras row, einheitlich oben
  auf jeder Page.
* ActionButtons: Edit + Delete combo mit Popconfirm + Tooltip.
* StatusDot: AntD Badge pattern statt "Yes/No" — schneller scanbar
  in dichten Tabellen.
* DataTable: pageSizeOptions [20,50,100,200] + extraActions-Alias +
  optional renderMobileCard für Card-Liste auf < md Breakpoint.
* enterprise.css: .page-header* + .datatable-toolbar Klassen.

Frontend WireGuard
------------------
* /vpn/wireguard mit zwei Tabs (Server / Client) im neuen Pattern.
* Server-Tab: Modal mit Generate-Keypair-Toggle, Peer-Roster im
  Drawer per Server. Pro Peer: QR-Code-Modal + .conf-Download.
* Client-Tab: Upstream-Card im Modal, full-tunnel-Default
  (0.0.0.0/0,::/0), Keepalive 25.
* i18n DE/EN für wg.* Block + common.* Erweiterung.

Misc
----
* Sidebar: WireGuard unter Security-Sektion.
* Nav-i18n: "Firewall (v2)" → "Firewall".
* Version 1.0.8 → 1.0.11.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

management-ui/src/components/ActionButtons.tsx

@@ -0,0 +1,64 @@
+import { Button, Popconfirm, Space, Tooltip } from 'antd'
+import { DeleteOutlined, EditOutlined } from '@ant-design/icons'
+import { useTranslation } from 'react-i18next'
+
+// ActionButtons is the standard "Edit / Delete" pair used at the
+// end of every CRUD table row. Centralising it means we only style
+// the action column once across the app.
+//
+// Either prop may be omitted to suppress that button — useful for
+// rows that aren't editable (e.g. builtin services).
+interface ActionButtonsProps {
+  onEdit?: () => void
+  onDelete?: () => void
+  deleteConfirm?: string
+  editTooltip?: string
+  deleteTooltip?: string
+  editDisabled?: boolean
+  deleteDisabled?: boolean
+  editDisabledReason?: string
+  deleteDisabledReason?: string
+}
+
+export default function ActionButtons({
+  onEdit, onDelete,
+  deleteConfirm,
+  editTooltip, deleteTooltip,
+  editDisabled, deleteDisabled,
+  editDisabledReason, deleteDisabledReason,
+}: ActionButtonsProps) {
+  const { t } = useTranslation()
+  return (
+    <Space size={4}>
+      {onEdit && (
+        <Tooltip title={editDisabled ? editDisabledReason : (editTooltip ?? t('common.edit'))}>
+          <Button
+            type="text"
+            size="small"
+            icon={<EditOutlined />}
+            disabled={editDisabled}
+            onClick={onEdit}
+          />
+        </Tooltip>
+      )}
+      {onDelete && (
+        deleteDisabled ? (
+          <Tooltip title={deleteDisabledReason ?? t('common.delete')}>
+            <Button type="text" size="small" danger icon={<DeleteOutlined />} disabled />
+          </Tooltip>
+        ) : (
+          <Popconfirm
+            title={deleteConfirm ?? t('common.deleteConfirm')}
+            okText={t('common.yes')}
+            cancelText={t('common.no')}
+            onConfirm={onDelete}
+          >
+            <Tooltip title={deleteTooltip ?? t('common.delete')}>
+              <Button type="text" size="small" danger icon={<DeleteOutlined />} />
+            </Tooltip>
+          </Popconfirm>
+        )
+      )}
+    </Space>
+  )
+}