Architektur: Craftvia-Domänenmodell, Verträge und Team-Schnitte

- Migration 0002_craftvia_domain: 27 Fachtabellen inkl. RLS (enable_tenant_rls)
- TENANT_MODELS (db.ts, backup/topology.ts) um alle Fachmodelle ergänzt
- moduleGuard liefert DB-autoritative Rechte; ServiceCtx für Domänen-Services
- Verträge: Statusmaschine, Events, Nummernkreise, Sichtbarkeits-Scopes,
  Job-Queues + Worker, KI-Provider-Interfaces, Sync-Envelope
- docs/craftvia/ARCHITEKTUR.md mit Lanes, Ownership und DoD

Gate: tsc, lint, build, 22/22 Tests grün.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

package.json

@@ -13,7 +13,8 @@
     "gate": "prisma generate && tsc --noEmit && npm run lint && npm run build && npm run test",
     "worker:mail": "tsx scripts/mail-worker.ts",
     "worker:backup": "tsx scripts/backup-worker.ts",
-    "brand:icons": "tsx scripts/generate-brand-icons.ts"
+    "brand:icons": "tsx scripts/generate-brand-icons.ts",
+    "worker:craftvia": "tsx scripts/craftvia-worker.ts"
   },
   "dependencies": {
     "@anthropic-ai/sdk": "^0.115.0",