feat: SolaceNet gateway rails, IRU marketplace hardening, and docs

- Gateway adapter registry, rails routes, optional SOLACENET_GATEWAY_RAILS_ENFORCE; HTTP integration tests.
- IRU marketplace: rate limits, public routes, notifications/SMTP env docs; marketplace UI constants and flows.
- Quantum proxy legacy protocol types; debank/tezos/GSDS touch-ups; .env.example operator notes.
- SolaceNet doc set (gaps, runbooks, telecom schema example).

Tests: npm run test:iru-marketplace, npm run test:gateway (pass).
Note: full-repo tsc still reports unrelated legacy errors outside this change set.
Made-with: Cursor

docs/IRU_IMPLEMENTATION_STATUS.md

@@ -15,6 +15,7 @@ This document tracks the complete implementation of the IRU Production Readiness
 ### Phase 1: Marketplace & Portal Foundation ✅ COMPLETE
 
 #### 1.1 Sankofa Phoenix Marketplace ✅
+- **Catalog model:** Phoenix IRU marketplace rows are **partner-style** offerings (e.g. SolaceNet). **Native** platform services (VMs, IPs, app hosting, etc.) are documented and operated separately; see `docs/03-deployment/SANKOFA_MARKETPLACE_SURFACES.md` (native vs partner methodology).
 - ✅ Database schema (IruOffering, IruInquiry, IruSubscription, IruAgreement)
 - ✅ Backend services:
   - `marketplace.service.ts` - Marketplace business logic