fix: Sektions-Ueberschrift "Recherchebericht" statt "Analyse"

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

src/report_generator.py

@@ -359,7 +359,7 @@ async def generate_docx(
 
     if scope in ("report", "full"):
         # --- Lagebild ---
-        doc.add_heading("Analyse" if incident.get("type") == "research" else "Lagebild", level=1)
+        doc.add_heading("Recherchebericht" if incident.get("type") == "research" else "Lagebild", level=1)
         raw_summary = incident.get("summary") or "Keine Zusammenfassung verfügbar."
         summary = _strip_citation_numbers(
             _truncate_lagebild(raw_summary, 4000) if scope == "report" else raw_summary