Semitexa is an open-source PHP 8.4 framework for long-running Swoole servers and AI-assisted development. A project graph lets you (or your AI agent) query routes, dependencies and blast radius before editing. Pages render on the server and arrive in stages, with deferred blocks and live SSE updates and no second frontend. ORM, tenancy and queues are built in, and traces plus targeted tests verify every change. Explore 81 live demo routes, with the source next to each one.