refactor(admin): split roadmap page.tsx into colocated components

Split 876-LOC page.tsx into 146 LOC with 7 colocated components
(RoadmapCard, CreateRoadmapModal, CreateItemModal, ImportWizard,
RoadmapDetailView split into header + items table), plus _types.ts,
_constants.ts, and _api.ts. Behavior preserved.

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

admin-compliance/app/sdk/roadmap/_constants.ts

@@ -0,0 +1,44 @@
+export const statusColors: Record<string, string> = {
+  draft: 'bg-gray-100 text-gray-700',
+  active: 'bg-green-100 text-green-700',
+  completed: 'bg-purple-100 text-purple-700',
+  archived: 'bg-red-100 text-red-700',
+}
+
+export const statusLabels: Record<string, string> = {
+  draft: 'Entwurf',
+  active: 'Aktiv',
+  completed: 'Abgeschlossen',
+  archived: 'Archiviert',
+}
+
+export const itemStatusColors: Record<string, string> = {
+  PLANNED: 'bg-gray-100 text-gray-700',
+  IN_PROGRESS: 'bg-blue-100 text-blue-700',
+  BLOCKED: 'bg-red-100 text-red-700',
+  COMPLETED: 'bg-green-100 text-green-700',
+  DEFERRED: 'bg-yellow-100 text-yellow-700',
+}
+
+export const itemStatusLabels: Record<string, string> = {
+  PLANNED: 'Geplant',
+  IN_PROGRESS: 'In Arbeit',
+  BLOCKED: 'Blockiert',
+  COMPLETED: 'Erledigt',
+  DEFERRED: 'Verschoben',
+}
+
+export const priorityColors: Record<string, string> = {
+  CRITICAL: 'bg-red-100 text-red-700',
+  HIGH: 'bg-orange-100 text-orange-700',
+  MEDIUM: 'bg-yellow-100 text-yellow-700',
+  LOW: 'bg-green-100 text-green-700',
+}
+
+export const categoryLabels: Record<string, string> = {
+  TECHNICAL: 'Technisch',
+  ORGANIZATIONAL: 'Organisatorisch',
+  PROCESSUAL: 'Prozessual',
+  DOCUMENTATION: 'Dokumentation',
+  TRAINING: 'Schulung',
+}