Gateway v2.5.1 - Fixed first-run completion with native HTTPS: Apply stays loading while Gateway restarts, then navigates freshly to sign-in after TLS has settled. - Hardened setup and installer coverage, including release-script expectations and SQL Explorer loading-state test races. - Expanded Gateway AI documentation for installation, authentication, Cloudflare, registries, ClickHouse, and troubleshooting. - Updated installation, node, capability, and database-connector documentation for browser-first setup and private connector bindings. - Included installer terminal and certificate-guidance refinements introduced since v2.5.0.