feat: Add Compliance Wiki as internal admin knowledge base

Migration 040 with wiki_categories + wiki_articles tables, 10 seed
articles across 8 categories (DSGVO, Art. 9, AVV, HinSchG etc.).
Read-only FastAPI API, Next.js proxy, and two-column frontend with
full-text search.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

backend-compliance/compliance/api/__init__.py

@@ -32,6 +32,7 @@ from .incident_routes import router as incident_router
 from .change_request_routes import router as change_request_router
 from .generation_routes import router as generation_router
 from .project_routes import router as project_router
+from .wiki_routes import router as wiki_router
 
 # Include sub-routers
 router.include_router(audit_router)
@@ -65,6 +66,7 @@ router.include_router(incident_router)
 router.include_router(change_request_router)
 router.include_router(generation_router)
 router.include_router(project_router)
+router.include_router(wiki_router)
 
 __all__ = [
     "router",
@@ -98,4 +100,5 @@ __all__ = [
     "change_request_router",
     "generation_router",
     "project_router",
+    "wiki_router",
 ]