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

src/__tests__/setup.ts

@@ -15,8 +15,6 @@ jest.setTimeout(10000);
 
 // Cleanup after all tests
 afterAll(async () => {
-  // Close any open connections
-  const prisma = new PrismaClient();
-  await prisma.$disconnect();
+  await prisma.$disconnect().catch(() => undefined);
 });