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/solacenet/public/README.md

@@ -0,0 +1,12 @@
+# SolaceNet — public documentation (markdown)
+
+Markdown in this folder is the **canonical source** for public-facing SolaceNet narrative. The live **web** summary is published on **https://info.defi-oracle.io/solacenet** (see `info-defi-oracle-138` in the Proxmox repo).
+
+| File | Purpose |
+|------|---------|
+| [OVERVIEW.md](OVERVIEW.md) | What SolaceNet is; public vs authenticated expectations; repo pointers |
+| [GAPS_AND_INCONSISTENCIES.md](GAPS_AND_INCONSISTENCIES.md) | Consolidated gaps and doc/product inconsistencies |
+
+**Internal** (not necessarily reproduced on the public site): [RAIL_AND_PROTOCOL_GOVERNANCE.md](../RAIL_AND_PROTOCOL_GOVERNANCE.md), [PROTOCOL_GAPS_CHECKLIST.md](../PROTOCOL_GAPS_CHECKLIST.md), [REMAINING_TASKS_FULL_LIST.md](../REMAINING_TASKS_FULL_LIST.md) (prioritized backlog), [AUDIT_GAPS_INCONSISTENCIES_MISSING.md](../AUDIT_GAPS_INCONSISTENCIES_MISSING.md) (delta audit), [PLUGIN_AND_GATEWAY_BRIDGE.md](../PLUGIN_AND_GATEWAY_BRIDGE.md).
+
+**Operator index:** `docs/04-configuration/SOLACENET_PUBLIC_HUB.md` (Proxmox repo root).