The praça session-orchestration substrate for the mado/tear terminal — automation-first: sessions are auto-named + auto-bound to projects, cd auto-attaches the project's session, the picker is the fallback. Pure typed logic: project-root detection, frecency ranking, project↔session bindings, a fuzzy/frecency session index, and the cd-driven attach decision engine. No I/O, no daemon wiring, all time injected.