Hovering a ticket card reveals a person-simple-run icon; clicking it
fetches the full ticket (pql.tickets.show withContext), builds a "pick
this up and start" prompt, and publishes ('builtin.tickets','pick-up',
{id,prompt}) on the message bus. The Claude builtin subscribes and
injects it into the active session (primary, else first visible) as a
user turn — a quiet no-op when no session is live. Sidebar stays
decoupled from the orchestrator (bus-only). Prompt-builder test.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>