add-iron-proxy

# Add Iron Proxy gateway Install the official `iron-control` console and PostgreSQL alongside one central Iron Proxy. NanoClaw core supplies the generic gateway seam and human approval flow. Read `docs/gateway-seam.md` before changing the integration. Use the bundled setup scripts and the source revisions in `versions.json`. The console is the upstream Rails application; its UI is not generated or copied into NanoClaw. This is a local Docker installation. Reuse this copy's recorded services and keys when refreshing it. ## Install the provider payload Copy the package's provider, approval middleware, tests, and agent guidance into their normal NanoClaw paths. ```nc:copy payload/src/gateway-providers/iron-proxy.ts -> src/gateway-providers/iron-proxy.ts payload/src/gateway-providers/iron-proxy.test.ts -> src/gateway-providers/iron-proxy.test.ts payload/src/gateway-providers/iron-proxy-approval.ts -> src/gateway-providers/iron-proxy-approval.ts payload/src/gateway-providers/iron-proxy-approval.test.ts -> src/gateway-providers/iron-proxy-approval.test.ts payload/src/gateway-providers/iron-proxy-transform.proto -> src/gateway-providers/iron-proxy-transform.proto payload/container/skills/iron-proxy-gateway/SKILL.md -> container/skills/iron-proxy-gateway/SKILL.md payload/container/skills/iron-proxy-gateway/instructions.md -> container/skills/iron-proxy-gateway/instructions.md ``` ## Register once The provider file makes the only product registration call. It declares idempoten...