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>

admin-compliance/app/sdk/agent/_components/AgentMcCoverage.tsx

@@ -16,6 +16,8 @@ const STATUS_COLOR: Record<string, string> = {
   high: '#dc2626',
   medium: '#f59e0b',
   low: '#3b82f6',
+  insufficient_evidence: '#64748b',
+  possibly_applicable: '#ca8a04',
 }
 
 const STATUS_LABEL: Record<string, string> = {
@@ -25,6 +27,8 @@ const STATUS_LABEL: Record<string, string> = {
   high: 'HIGH',
   medium: 'MEDIUM',
   low: 'LOW',
+  insufficient_evidence: 'unklar',
+  possibly_applicable: 'evtl. relevant',
 }
 
 export function AgentMcCoverage({ coverage }: { coverage: McCoverage[] }) {