feat: Server-Konsolen-Mitschnitt (24h, wie docker logs) als Download im Logs-Bereich

backend/src/consoleLog.js

@@ -0,0 +1,57 @@
+const fs = require('fs');
+
+// Persistenter Pfad (selbes Volume wie die DB), übersteht Container-Neustarts
+const LOG_FILE = process.env.CONSOLE_LOG_FILE || '/data/app-console.log';
+const MAX_AGE_MS = 24 * 60 * 60 * 1000;
+
+const origLog   = console.log.bind(console);
+const origError = console.error.bind(console);
+const origWarn  = console.warn.bind(console);
+
+function stringifyArg(a) {
+  if (typeof a === 'string') return a;
+  if (a instanceof Error) return a.stack || a.message;
+  try { return JSON.stringify(a); } catch { return String(a); }
+}
+
+function appendLine(level, args) {
+  try {
+    const msg = args.map(stringifyArg).join(' ');
+    fs.appendFileSync(LOG_FILE, `[${new Date().toISOString()}] [${level}] ${msg}\n`);
+  } catch {
+    // Darf niemals die eigentliche Konsolen-Ausgabe verhindern
+  }
+}
+
+// Entfernt Zeilen, die älter als MAX_AGE_MS sind. Zeilen ohne erkennbaren
+// Zeitstempel (z.B. Fortsetzungszeilen eines mehrzeiligen Stacktraces) werden
+// bewusst behalten, um nichts mittendrin abzuschneiden.
+function pruneOldLines() {
+  try {
+    if (!fs.existsSync(LOG_FILE)) return;
+    const content = fs.readFileSync(LOG_FILE, 'utf8');
+    const cutoff = Date.now() - MAX_AGE_MS;
+    const lines = content.split('\n').filter(line => {
+      const m = line.match(/^\[([^\]]+)\]/);
+      if (!m) return true;
+      const t = new Date(m[1]).getTime();
+      return Number.isNaN(t) || t >= cutoff;
+    });
+    fs.writeFileSync(LOG_FILE, lines.join('\n'));
+  } catch (e) {
+    origError('Konsolen-Log-Aufräumen fehlgeschlagen:', e.message);
+  }
+}
+
+function installConsoleCapture() {
+  console.log   = (...args) => { origLog(...args);   appendLine('LOG', args); };
+  console.error = (...args) => { origError(...args); appendLine('ERROR', args); };
+  console.warn  = (...args) => { origWarn(...args);  appendLine('WARN', args); };
+
+  pruneOldLines(); // einmal direkt beim Start
+  setInterval(pruneOldLines, 60 * 60 * 1000); // danach stündlich
+}
+
+function getLogFilePath() { return LOG_FILE; }
+
+module.exports = { installConsoleCapture, getLogFilePath, pruneOldLines };

backend/src/index.js

@@ -1,3 +1,5 @@
+require('./consoleLog').installConsoleCapture();
+
 const express = require('express');
 const path    = require('path');
 const fs      = require('fs');

backend/src/routes/admin.js

@@ -590,4 +590,14 @@ router.delete('/logs/:id', authenticate, requireAdmin, (req, res) => {
   res.json({ ok: true });
 });
 
+// GET /console-log/download – Live-Konsolen-Mitschnitt (letzte 24h) als
+// Datei herunterladen (Admin)
+router.get('/console-log/download', authenticate, requireAdmin, (req, res) => {
+  const { getLogFilePath } = require('../consoleLog');
+  const filePath = getLogFilePath();
+  if (!fs.existsSync(filePath)) return res.status(404).json({ error: 'Noch keine Logs vorhanden' });
+  const stamp = new Date().toISOString().replace(/[:T]/g, '-').slice(0, 19);
+  res.download(filePath, `dickendock-console-${stamp}.log`);
+});
+
 module.exports = router;

frontend/src/App.jsx

@@ -3238,6 +3238,21 @@ function PushLogs({ toast }) {
     }
   };
 
+  const downloadConsoleLog = async () => {
+    try {
+      const tokenVal = localStorage.getItem('sk_token');
+      const res = await fetch('/api/admin/console-log/download', { headers: { Authorization: `Bearer ${tokenVal}` } });
+      if (!res.ok) { const d = await res.json().catch(()=>({})); throw new Error(d.error || 'Fehler'); }
+      const blob = await res.blob();
+      const url = URL.createObjectURL(blob);
+      const a = document.createElement('a');
+      a.href = url;
+      a.download = `dickendock-console-${new Date().toISOString().slice(0,10)}.log`;
+      document.body.appendChild(a); a.click(); document.body.removeChild(a);
+      URL.revokeObjectURL(url);
+    } catch(e) { toast?.(e.message||'Fehler','error'); }
+  };
+
   const fmtDate = iso => {
     if (!iso) return '—';
     const d = new Date(iso.replace(' ', 'T'));
@@ -3263,11 +3278,18 @@ function PushLogs({ toast }) {
   return (
     <div>
       <Sec title={`LOGS (${filtered.length})`}>
+        <div style={{ ...S.sub, marginBottom:10 }}>
+          Live-Mitschnitt der Server-Konsole (wie <code>docker logs -f dickendock</code>), letzte 24 Stunden — danach
+          werden ältere Zeilen automatisch überschrieben.
+        </div>
         <div style={{ display:'flex', gap:8, marginBottom:8, flexWrap:'wrap' }}>
           <select value={typeFilter} onChange={e=>setTypeFilter(e.target.value)}
             style={{ ...S.inp, flex:'1 1 200px' }}>
             {LOG_TYPE_OPTIONS.map(([id,label]) => <option key={id} value={id}>{label}</option>)}
           </select>
+          <button onClick={downloadConsoleLog} style={{ ...S.btn('#4ecdc4'), flexShrink:0, whiteSpace:'nowrap' }}>
+            ⬇ Server-Konsole (24h)
+          </button>
         </div>
         <div style={{ display:'flex', gap:8, marginBottom:12 }}>
           <input value={filter} onChange={e=>setFilter(e.target.value)}