Sub-ticket of EVO-34 BUILD spawn-agent.sh + reaper (EVO-26 productionization; Elazar greenlit 2026-06-22). One-command on-demand worker spawn (task launch-arg'd) + PTD-gated external teardown. KEY CONSTRAINTS: tmux->ccs DIRECT via tmux-ccs.sh, NO extra terminal layer (Elazar caveat; extra PID=orphan bug); full -cc agent name (bare double-registers); external teardown only (agents can't self-/exit); /unregister SINGULAR {agent:x} per call (array form returns missing_agent), clean both -cc + bare rows; TTL hang-reaper must hub-deregister; reuse per-app agent dirs; shared-tree flock for mars/pluto. Script in ~/Documents/terminal/sh/ (shared, notify bin-whey per sh.git); PMs EXECUTE, bin OWNS+versions. Inputs from venus pilot EVO-33. · evolutiva