feat: add "Without German" tab to filter media missing German audio or subtitles

Add new navigation tab showing count of movies and episodes without German tracks. Implement has_german_track() helper to check for German audio or subtitles. Filter movies and series to create missing_german_movies and missing_german_series lists passed to template. Add dedicated view section with tables for movies and series lacking German content, including empty state message. Update navigation translation logic

app.py

@@ -153,6 +153,10 @@ def language_state(audios):
     if "Englisch" in names: return {"class":"bad", "label":"English only"}
     return {"class":"neutral", "label":"Andere"}
 
+def has_german_track(row):
+    languages = row.get("audio_languages", []) + row.get("subtitle_languages", [])
+    return any(language.get("name") == "Deutsch" for language in languages)
+
 def media_row(name, year, media_file, remote, local, extra=None):
     path = media_file.get("path") if media_file else None
     if not path and media_file and media_file.get("relativePath"): path = str(Path(media_file.get("basePath") or "") / media_file["relativePath"])
@@ -224,7 +228,17 @@ def index():
             series = sonarr_groups()
             if any(row["pending"] for group in series for row in group["episodes"]): start_scan("sonarr")
         except Exception as exc: log.exception("Sonarr nicht erreichbar"); error = f"{error + ' | ' if error else ''}Sonarr: {exc}"
-    return render_template("index.html", rows=rows, series=series, error=error, sonarr_enabled=bool(SONARR_URL and SONARR_API_KEY), sab_enabled=bool(SAB_URL and SAB_API_KEY), radarr_media_path=RADARR_MEDIA_PATH, local_media_path=LOCAL_MEDIA_PATH, local_series_path=LOCAL_SERIES_PATH)
+    missing_german_movies = [row for row in rows if not has_german_track(row)]
+    missing_german_series = []
+    for group in series:
+        episodes = [episode for episode in group["episodes"] if not has_german_track(episode)]
+        if episodes:
+            missing_german_series.append({**group, "episodes": episodes})
+    return render_template("index.html", rows=rows, series=series, missing_german_movies=missing_german_movies,
+                           missing_german_series=missing_german_series, error=error,
+                           sonarr_enabled=bool(SONARR_URL and SONARR_API_KEY), sab_enabled=bool(SAB_URL and SAB_API_KEY),
+                           radarr_media_path=RADARR_MEDIA_PATH, local_media_path=LOCAL_MEDIA_PATH,
+                           local_series_path=LOCAL_SERIES_PATH)
 
 @app.post("/api/rescan")
 def api_rescan():