feat(agent): 4-Status-Modell (NOT_APPLICABLE/INSUFFICIENT_EVIDENCE/POSSIBLY_APPLICABLE) für Impressum

Kanonisches Compliance-Datenmodell, Impressum-Agent als Referenz:
- CheckStatus-Enum + Finding.status GETRENNT von severity (Verdikt ≠ Risiko)
- Unbestimmte Rechtsform (weder Text noch Wizard) → INSUFFICIENT_EVIDENCE (INFO)
  statt hartem HIGH-FAIL; legal_form_dependent-Gate + detect_legal_form_present
- §18-MStV-Graubereich (Corporate-Blog via has_editorial_content) →
  POSSIBLY_APPLICABLE (LOW Prüf-Hinweis); 3-stufig via scope_disposition
- Recommendations nur aus echten FAILs; mc_insufficient/mc_possibly-Aggregate
- Frontend: Verdikt-Pill + Coverage-Vokabular
- 19 neue Tests (test_four_status.py, AgentFindingCard); CI-Suite 204 grün,
  v3 25 / GT 13 unverändert

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

backend-compliance/compliance/api/agent_check/_agent_outputs.py

@@ -43,6 +43,13 @@ def _derive_scope(profile_dict: dict) -> list[str]:
         scope.add("regulated_profession")
     if profile_dict.get("industry") in ("insurance", "Finance", "finance"):
         scope.add("insurance")
+    # §18 MStV — 3-stufig: Medienunternehmen (Verlag/Presse) = harte Pflicht;
+    # nur Blog/News-Inhalte (has_editorial_content) = Graubereich → der Agent
+    # wertet 'editorial_possible' als POSSIBLY_APPLICABLE (Pruef-Hinweis).
+    if profile_dict.get("industry") == "media":
+        scope.add("editorial")
+    elif profile_dict.get("has_editorial_content"):
+        scope.add("editorial_possible")
     return sorted(scope)