refactor(admin): split whistleblower page.tsx + restore scope helpers

Whistleblower (1220 -> 349 LOC) split into 6 colocated components:
TabNavigation, StatCard, FilterBar, ReportCard, WhistleblowerCreateModal,
CaseDetailPanel. All under the 300 LOC soft target.

Drive-by fix: the earlier fc6a330 split of compliance-scope-types.ts
dropped several helper exports that downstream consumers still import
(lib/sdk/index.ts, compliance-scope-engine.ts, obligations page,
compliance-scope page, constraint-enforcer, drafting-engine validate).
Restored them in the appropriate domain modules:

- core-levels.ts: maxDepthLevel, getDepthLevelNumeric, depthLevelFromNumeric
- state.ts: createEmptyScopeState
- decisions.ts: createEmptyScopeDecision + ApplicableRegulation,
  RegulationObligation, RegulationAssessmentResult, SupervisoryAuthorityInfo

Verification: next build clean (142 pages generated), /sdk/whistleblower
still builds at ~11.5 kB.

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

admin-compliance/lib/sdk/compliance-scope-types/core-levels.ts

@@ -27,3 +27,42 @@ export interface ComplianceScores {
   /** Zusammengesetzter Score (0-100): Gewichtete Kombination aller Scores */
   composite_score: number;
 }
+
+/**
+ * Gibt das höhere von zwei Depth Levels zurück.
+ */
+export function maxDepthLevel(
+  a: ComplianceDepthLevel,
+  b: ComplianceDepthLevel
+): ComplianceDepthLevel {
+  const levels: ComplianceDepthLevel[] = ['L1', 'L2', 'L3', 'L4'];
+  const indexA = levels.indexOf(a);
+  const indexB = levels.indexOf(b);
+  return levels[Math.max(indexA, indexB)];
+}
+
+/**
+ * Konvertiert Depth Level zu numerischem Wert (1-4).
+ */
+export function getDepthLevelNumeric(level: ComplianceDepthLevel): number {
+  const map: Record<ComplianceDepthLevel, number> = {
+    L1: 1,
+    L2: 2,
+    L3: 3,
+    L4: 4,
+  };
+  return map[level];
+}
+
+/**
+ * Konvertiert numerischen Wert (1-4) zu Depth Level.
+ */
+export function depthLevelFromNumeric(n: number): ComplianceDepthLevel {
+  const map: Record<number, ComplianceDepthLevel> = {
+    1: 'L1',
+    2: 'L2',
+    3: 'L3',
+    4: 'L4',
+  };
+  return map[Math.max(1, Math.min(4, Math.round(n)))] || 'L1';
+}

admin-compliance/lib/sdk/compliance-scope-types/decisions.ts

@@ -109,3 +109,79 @@ export interface ScopeReasoning {
   /** Auswirkung */
   impact: string;
 }
+
+/**
+ * Erstellt eine leere ScopeDecision mit Default-Werten.
+ */
+export function createEmptyScopeDecision(): ScopeDecision {
+  return {
+    id: `decision_${Date.now()}`,
+    determinedLevel: 'L1',
+    scores: {
+      risk_score: 0,
+      complexity_score: 0,
+      assurance_need: 0,
+      composite_score: 0,
+    },
+    triggeredHardTriggers: [],
+    requiredDocuments: [],
+    riskFlags: [],
+    gaps: [],
+    nextActions: [],
+    reasoning: [],
+    createdAt: new Date().toISOString(),
+    updatedAt: new Date().toISOString(),
+  };
+}
+
+// ============================================================================
+// Regulation Assessment Types (from Go AI SDK /assess-from-scope)
+// ============================================================================
+
+/** Eine anwendbare Regulierung (aus Go SDK ApplicableRegulation). */
+export interface ApplicableRegulation {
+  id: string
+  name: string
+  classification: string
+  reason: string
+  obligation_count: number
+  control_count: number
+}
+
+/** Einzelne Pflicht aus dem Go SDK. */
+export interface RegulationObligation {
+  id: string
+  regulation_id: string
+  title: string
+  description: string
+  category: string
+  responsible: string
+  priority: string
+  legal_basis?: Array<{ article: string; name: string }>
+  how_to_implement?: string
+  breakpilot_feature?: string
+}
+
+/** Ergebnis der Regulierungs-Bewertung vom Go AI SDK. */
+export interface RegulationAssessmentResult {
+  applicable_regulations: ApplicableRegulation[]
+  obligations: RegulationObligation[]
+  executive_summary: {
+    total_regulations: number
+    total_obligations: number
+    critical_obligations: number
+    compliance_score: number
+    key_risks: string[]
+    recommended_actions: string[]
+  }
+}
+
+/** Aufsichtsbehoerden-Ergebnis. */
+export interface SupervisoryAuthorityInfo {
+  domain: string
+  authority: {
+    name: string
+    abbreviation: string
+    url: string
+  }
+}

admin-compliance/lib/sdk/compliance-scope-types/state.ts

@@ -20,3 +20,15 @@ export interface ComplianceScopeState {
   /** Sind alle Pflichtfragen beantwortet? */
   isComplete: boolean;
 }
+
+/**
+ * Erstellt einen leeren ComplianceScopeState mit Default-Werten.
+ */
+export function createEmptyScopeState(): ComplianceScopeState {
+  return {
+    answers: [],
+    decision: null,
+    lastEvaluatedAt: null,
+    isComplete: false,
+  };
+}