Phase 5-9: Matching-Engine, Podcast-Support, Web-Interface + Player

Backend:
- Matching-Orchestrator mit deutschen Serien-Patterns (drei ???, TKKG, ...)
- Vollständige MusicBrainz-Integration (Tracklist → Kapitel, Cover Art Archive)
- OpenLibrary + Google Books als Fallback-Quellen
- Auto-Accept (≥0.75) vs zu_prüfen (0.5-0.75) vs kein Match
- Manuelles Matching: GET /api/items/:id/match/search, POST apply
- RSS-Feed-Manager: feedparser, iTunes Search, periodisches Update
- APScheduler für Podcast-Feed-Updates (konfigurierbares Intervall)
- Podcast-Router: Feed-URL setzen, Episoden, Feed-Suche
- HLS: FFmpeg läuft als Background-Task, wartet auf ersten Segment
- main.py: APScheduler + neue Router eingebunden

Frontend (React + Vite + Tailwind + HLS.js):
- Login-Seite mit Fehlerbehandlung
- Library-Seite: Grid/Listen-Ansicht, Suche, Tag-Filter, Pagination, Scan
- BookCard: Cover, Fortschrittsbalken, zu_prüfen Badge, Quick-Play
- BookDetail: Metadaten, Matching-Panel, Kapitel-Liste, Lesezeichen
- AudioPlayer: HLS.js, Kapitel-Marker auf Fortschrittsbalken, Speed,
  Sleep-Timer, Lesezeichen, Keyboard-Shortcuts (Space/Arrows)
- MiniPlayer: persistent an Fußzeile, expandierbar
- PodcastDetail: Feed-URL, iTunes-Suche, Episoden-Liste
- Admin-Panel: Benutzer/Bibliotheken/Einstellungen verwalten
- App.tsx: React Router, Auth-Guard, Player-Overlay

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

frontend/src/components/player/MiniPlayer.tsx

@@ -0,0 +1,53 @@
+import React from 'react'
+import { Play, Pause, X, ChevronUp } from 'lucide-react'
+import { usePlayerStore } from '../../store/playerStore'
+import CoverImage from '../common/CoverImage'
+import { coverUrl } from '../../api/items'
+
+export default function MiniPlayer() {
+  const { item, currentTime, duration, isPlaying, setPlaying, stop, setExpanded } = usePlayerStore()
+  if (!item) return null
+
+  const meta = item.media?.metadata || {}
+  const title = meta.title || item.relPath || ''
+  const author = meta.authors?.[0]?.name || ''
+  const pct = duration > 0 ? (currentTime / duration) * 100 : 0
+
+  return (
+    <div className="fixed bottom-0 left-0 right-0 bg-surface border-t border-white/10 z-50">
+      {/* Progress bar */}
+      <div className="h-0.5 bg-white/10">
+        <div className="h-full bg-primary transition-all" style={{ width: `${pct}%` }} />
+      </div>
+
+      <div className="flex items-center gap-3 px-4 py-3">
+        <div
+          className="cursor-pointer flex items-center gap-3 flex-1 min-w-0"
+          onClick={() => setExpanded(true)}
+        >
+          <CoverImage
+            src={item.media?.coverPath ? coverUrl(item.id) : null}
+            alt={title}
+            className="w-10 h-10 rounded flex-shrink-0"
+          />
+          <div className="min-w-0">
+            <p className="text-sm font-medium text-white truncate">{title}</p>
+            {author && <p className="text-xs text-gray-400 truncate">{author}</p>}
+          </div>
+        </div>
+
+        <div className="flex items-center gap-2 flex-shrink-0">
+          <button
+            className="w-9 h-9 rounded-full bg-primary text-black flex items-center justify-center"
+            onClick={() => setPlaying(!isPlaying)}
+          >
+            {isPlaying ? <Pause size={16} fill="currentColor" /> : <Play size={16} fill="currentColor" />}
+          </button>
+          <button className="text-gray-400 hover:text-white p-1" onClick={stop}>
+            <X size={18} />
+          </button>
+        </div>
+      </div>
+    </div>
+  )
+}