feat: add ioBroker REST API integration

- New iobroker_sources + iobroker_states tables
- Source manager with discover, test, CRUD
- State poller (10s interval, getBulk endpoint)
- REST API routes under /api/iobroker
- Frontend page with search + pagination
- Sidebar link, app route

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

display/frontend/src/App.tsx

@@ -6,6 +6,7 @@ import Dashboard from './pages/Dashboard';
 import MqttBrokers from './pages/MqttBrokers';
 import MqttTopics from './pages/MqttTopics';
 import PgSources from './pages/PgSources';
+import IoBroker from './pages/IoBroker';
 import Datapoints from './pages/Datapoints';
 import Displays from './pages/Displays';
 import Layouts from './pages/Layouts';
@@ -31,6 +32,7 @@ export default function App() {
         <Route path="/mqtt/brokers" element={<ProtectedRoute><MqttBrokers /></ProtectedRoute>} />
         <Route path="/mqtt/topics/:brokerId" element={<ProtectedRoute><MqttTopics /></ProtectedRoute>} />
         <Route path="/pg/sources" element={<ProtectedRoute><PgSources /></ProtectedRoute>} />
+        <Route path="/iobroker" element={<ProtectedRoute><IoBroker /></ProtectedRoute>} />
         <Route path="/datapoints" element={<ProtectedRoute><Datapoints /></ProtectedRoute>} />
         <Route path="/displays" element={<ProtectedRoute><Displays /></ProtectedRoute>} />
         <Route path="/layouts" element={<ProtectedRoute><Layouts /></ProtectedRoute>} />

display/frontend/src/assets/react.svg

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display/frontend/src/components/Sidebar.tsx

@@ -5,6 +5,7 @@ const links = [
   { to: '/', label: 'Dashboard', exact: true },
   { to: '/mqtt/brokers', label: 'MQTT Broker' },
   { to: '/pg/sources', label: 'PostgreSQL Quellen' },
+  { to: '/iobroker', label: 'ioBroker' },
   { to: '/datapoints', label: 'Datenpunkte' },
   { to: '/displays', label: 'Displays' },
   { to: '/layouts', label: 'Layouts' },

display/frontend/src/pages/IoBroker.tsx

@@ -0,0 +1,367 @@
+import { useEffect, useState, useCallback } from 'react';
+import type { FormEvent } from 'react';
+import { api } from '../api/client';
+import StatusBadge from '../components/StatusBadge';
+
+interface IoBrokerSource {
+  id: number;
+  name: string;
+  host: string;
+  port: number;
+  enabled: number;
+  status: string;
+  created_at: string;
+}
+
+interface IoBrokerState {
+  id: number;
+  source_id: number;
+  state_id: string;
+  selected: number;
+  last_value: string | null;
+  last_ts: number | null;
+  discovered_at: string;
+}
+
+interface StatesResponse {
+  states: IoBrokerState[];
+  total: number;
+}
+
+const emptyForm = { name: '', host: '', port: '8087' };
+const PAGE_SIZE = 50;
+
+export default function IoBroker() {
+  const [sources, setSources] = useState<IoBrokerSource[]>([]);
+  const [selectedSource, setSelectedSource] = useState<IoBrokerSource | null>(null);
+  const [form, setForm] = useState(emptyForm);
+  const [error, setError] = useState('');
+  const [testResult, setTestResult] = useState<string | null>(null);
+  const [discoveryMsg, setDiscoveryMsg] = useState('');
+
+  // States panel state
+  const [statesData, setStatesData] = useState<StatesResponse>({ states: [], total: 0 });
+  const [search, setSearch] = useState('');
+  const [searchInput, setSearchInput] = useState('');
+  const [showSelected, setShowSelected] = useState(false);
+  const [page, setPage] = useState(0);
+
+  async function loadSources() {
+    try {
+      setSources(await api.get<IoBrokerSource[]>('/api/iobroker/sources'));
+    } catch (e) {
+      setError((e as Error).message);
+    }
+  }
+
+  const loadStates = useCallback(async () => {
+    if (!selectedSource) return;
+    try {
+      const params = new URLSearchParams();
+      if (search) params.set('search', search);
+      if (showSelected) params.set('selected', '1');
+      params.set('limit', String(PAGE_SIZE));
+      params.set('offset', String(page * PAGE_SIZE));
+      const result = await api.get<StatesResponse>(
+        `/api/iobroker/sources/${selectedSource.id}/states?${params}`
+      );
+      setStatesData(result);
+    } catch (e) {
+      setError((e as Error).message);
+    }
+  }, [selectedSource, search, showSelected, page]);
+
+  useEffect(() => { loadSources(); }, []);
+  useEffect(() => { loadStates(); }, [loadStates]);
+
+  // Debounced search
+  useEffect(() => {
+    const timer = setTimeout(() => { setSearch(searchInput); setPage(0); }, 400);
+    return () => clearTimeout(timer);
+  }, [searchInput]);
+
+  async function handleAdd(e: FormEvent) {
+    e.preventDefault();
+    setError('');
+    try {
+      await api.post('/api/iobroker/sources', { ...form, port: parseInt(form.port) });
+      setForm(emptyForm);
+      loadSources();
+    } catch (e) {
+      setError((e as Error).message);
+    }
+  }
+
+  async function handleDelete(id: number) {
+    if (!confirm('Quelle wirklich loeschen?')) return;
+    try {
+      await api.del(`/api/iobroker/sources/${id}`);
+      if (selectedSource?.id === id) {
+        setSelectedSource(null);
+        setStatesData({ states: [], total: 0 });
+      }
+      loadSources();
+    } catch (e) {
+      setError((e as Error).message);
+    }
+  }
+
+  async function handleTest(source: IoBrokerSource) {
+    setTestResult(null);
+    try {
+      const result = await api.post<{ success: boolean }>(
+        `/api/iobroker/sources/${source.id}/test`
+      );
+      setTestResult(result.success ? 'Verbindung erfolgreich' : 'Nicht erreichbar');
+    } catch (e) {
+      setTestResult('Fehler: ' + (e as Error).message);
+    }
+  }
+
+  async function handleDiscover(source: IoBrokerSource) {
+    setDiscoveryMsg('Discovery laeuft...');
+    try {
+      await api.post(`/api/iobroker/sources/${source.id}/discover`);
+      setDiscoveryMsg('Discovery gestartet. States werden geladen...');
+      setTimeout(() => {
+        loadStates();
+        setDiscoveryMsg('');
+      }, 3000);
+    } catch (e) {
+      setDiscoveryMsg('Fehler: ' + (e as Error).message);
+    }
+  }
+
+  async function handleSelectState(state: IoBrokerState, selected: boolean) {
+    try {
+      await api.put(`/api/iobroker/states/${state.id}`, { selected: selected ? 1 : 0 });
+      loadStates();
+    } catch (e) {
+      setError((e as Error).message);
+    }
+  }
+
+  function handleSelectSource(source: IoBrokerSource) {
+    setSelectedSource(source);
+    setPage(0);
+    setSearch('');
+    setSearchInput('');
+    setShowSelected(false);
+    setDiscoveryMsg('');
+    setTestResult(null);
+  }
+
+  const totalPages = Math.ceil(statesData.total / PAGE_SIZE);
+
+  return (
+    <div>
+      <h2 className="text-xl font-semibold text-gray-800 mb-6">ioBroker Quellen</h2>
+      {error && (
+        <div className="mb-4 p-3 bg-red-50 border border-red-200 rounded text-red-700 text-sm">
+          {error}
+          <button className="ml-2 font-bold" onClick={() => setError('')}>x</button>
+        </div>
+      )}
+
+      {/* Sources table */}
+      <div className="bg-white rounded-lg border border-gray-200 overflow-hidden mb-6">
+        <table className="w-full text-sm">
+          <thead className="bg-gray-50">
+            <tr>
+              <th className="px-4 py-2 text-left text-xs font-medium text-gray-500 uppercase">Name</th>
+              <th className="px-4 py-2 text-left text-xs font-medium text-gray-500 uppercase">Host:Port</th>
+              <th className="px-4 py-2 text-left text-xs font-medium text-gray-500 uppercase">Status</th>
+              <th className="px-4 py-2 text-left text-xs font-medium text-gray-500 uppercase">Aktionen</th>
+            </tr>
+          </thead>
+          <tbody className="divide-y divide-gray-100">
+            {sources.length === 0 && (
+              <tr>
+                <td colSpan={4} className="px-4 py-6 text-center text-gray-400">
+                  Keine ioBroker Quellen konfiguriert
+                </td>
+              </tr>
+            )}
+            {sources.map((s) => (
+              <tr
+                key={s.id}
+                className={`hover:bg-gray-50 cursor-pointer ${selectedSource?.id === s.id ? 'bg-sky-50 ring-1 ring-inset ring-sky-200' : ''}`}
+                onClick={() => handleSelectSource(s)}
+              >
+                <td className="px-4 py-2 font-medium text-gray-800">{s.name}</td>
+                <td className="px-4 py-2 text-gray-600">{s.host}:{s.port}</td>
+                <td className="px-4 py-2"><StatusBadge status={s.status} /></td>
+                <td className="px-4 py-2 flex gap-2">
+                  <button
+                    onClick={(e) => { e.stopPropagation(); handleTest(s); }}
+                    className="text-sky-500 hover:text-sky-700 text-xs"
+                  >
+                    Testen
+                  </button>
+                  <button
+                    onClick={(e) => { e.stopPropagation(); handleSelectSource(s); handleDiscover(s); }}
+                    className="text-indigo-500 hover:text-indigo-700 text-xs"
+                  >
+                    Discovery
+                  </button>
+                  <button
+                    onClick={(e) => { e.stopPropagation(); handleDelete(s.id); }}
+                    className="text-red-500 hover:text-red-700 text-xs"
+                  >
+                    Loeschen
+                  </button>
+                </td>
+              </tr>
+            ))}
+          </tbody>
+        </table>
+      </div>
+
+      {testResult && (
+        <div className="mb-4 p-3 bg-blue-50 border border-blue-200 rounded text-blue-700 text-sm">
+          {testResult}
+        </div>
+      )}
+
+      {/* Add form */}
+      <div className="bg-white rounded-lg border border-gray-200 p-6 mb-8">
+        <h3 className="font-medium text-gray-700 mb-4">Quelle hinzufuegen</h3>
+        <form onSubmit={handleAdd} className="grid grid-cols-3 gap-4">
+          <div>
+            <label className="block text-xs text-gray-600 mb-1">Name *</label>
+            <input
+              type="text"
+              required
+              className="w-full border border-gray-300 rounded px-3 py-1.5 text-sm"
+              value={form.name}
+              onChange={(e) => setForm({ ...form, name: e.target.value })}
+            />
+          </div>
+          <div>
+            <label className="block text-xs text-gray-600 mb-1">Host *</label>
+            <input
+              type="text"
+              required
+              className="w-full border border-gray-300 rounded px-3 py-1.5 text-sm"
+              value={form.host}
+              onChange={(e) => setForm({ ...form, host: e.target.value })}
+            />
+          </div>
+          <div>
+            <label className="block text-xs text-gray-600 mb-1">Port</label>
+            <input
+              type="number"
+              className="w-full border border-gray-300 rounded px-3 py-1.5 text-sm"
+              value={form.port}
+              onChange={(e) => setForm({ ...form, port: e.target.value })}
+            />
+          </div>
+          <div className="col-span-3">
+            <button
+              type="submit"
+              className="bg-sky-500 hover:bg-sky-600 text-white text-sm font-medium px-4 py-2 rounded transition-colors"
+            >
+              Hinzufuegen
+            </button>
+          </div>
+        </form>
+      </div>
+
+      {/* States panel */}
+      {selectedSource && (
+        <div>
+          <h3 className="text-lg font-semibold text-gray-700 mb-2">
+            States — {selectedSource.name}
+          </h3>
+          <p className="text-sm text-gray-500 mb-4">
+            {statesData.total} States gefunden
+          </p>
+
+          {discoveryMsg && (
+            <p className="text-sm text-indigo-600 mb-3">{discoveryMsg}</p>
+          )}
+
+          {/* Controls */}
+          <div className="flex gap-3 mb-4 flex-wrap items-center">
+            <input
+              placeholder="States suchen..."
+              className="border border-gray-300 rounded px-3 py-1.5 text-sm w-72"
+              value={searchInput}
+              onChange={(e) => setSearchInput(e.target.value)}
+            />
+            <label className="flex items-center gap-1.5 text-sm text-gray-600 cursor-pointer">
+              <input
+                type="checkbox"
+                checked={showSelected}
+                onChange={(e) => { setShowSelected(e.target.checked); setPage(0); }}
+                className="accent-green-500"
+              />
+              Nur ausgewaehlte
+            </label>
+          </div>
+
+          <div className="bg-white rounded-lg border border-gray-200 overflow-hidden">
+            <table className="w-full text-sm">
+              <thead className="bg-gray-50">
+                <tr>
+                  <th className="px-3 py-2 text-left text-xs font-medium text-gray-500 w-10">Aktiv</th>
+                  <th className="px-3 py-2 text-left text-xs font-medium text-gray-500">State ID</th>
+                  <th className="px-3 py-2 text-left text-xs font-medium text-gray-500 w-48">Letzter Wert</th>
+                </tr>
+              </thead>
+              <tbody className="divide-y divide-gray-100">
+                {statesData.states.length === 0 && (
+                  <tr>
+                    <td colSpan={3} className="px-3 py-6 text-center text-gray-400">
+                      {statesData.total === 0
+                        ? 'Keine States gefunden. Starte Discovery.'
+                        : 'Keine States fuer diese Suche.'}
+                    </td>
+                  </tr>
+                )}
+                {statesData.states.map((s) => (
+                  <tr key={s.id} className={`hover:bg-gray-50 ${s.selected ? 'bg-green-50' : ''}`}>
+                    <td className="px-3 py-1.5 text-center">
+                      <input
+                        type="checkbox"
+                        checked={!!s.selected}
+                        onChange={(e) => handleSelectState(s, e.target.checked)}
+                        className="w-4 h-4 accent-green-500 cursor-pointer"
+                      />
+                    </td>
+                    <td className="px-3 py-1.5 font-mono text-xs text-gray-700 truncate max-w-md" title={s.state_id}>
+                      {s.state_id}
+                    </td>
+                    <td className="px-3 py-1.5 text-xs text-gray-500 truncate max-w-48" title={s.last_value ?? ''}>
+                      {s.last_value ?? '—'}
+                    </td>
+                  </tr>
+                ))}
+              </tbody>
+            </table>
+          </div>
+
+          {totalPages > 1 && (
+            <div className="flex items-center gap-2 mt-3 text-sm text-gray-600">
+              <button
+                onClick={() => setPage(Math.max(0, page - 1))}
+                disabled={page === 0}
+                className="px-3 py-1 rounded border border-gray-300 disabled:opacity-30 hover:bg-gray-50"
+              >
+                Zurueck
+              </button>
+              <span>Seite {page + 1} von {totalPages}</span>
+              <button
+                onClick={() => setPage(Math.min(totalPages - 1, page + 1))}
+                disabled={page >= totalPages - 1}
+                className="px-3 py-1 rounded border border-gray-300 disabled:opacity-30 hover:bg-gray-50"
+              >
+                Weiter
+              </button>
+            </div>
+          )}
+        </div>
+      )}
+    </div>
+  );
+}