Mock inference gains a one-shot `E2E_CALL(<tool>)[<json>]` script so a spec can make the REAL tool run from a real Bot Chat; the new spec creates a sender bot, seeds a `writer` profile titled "Scribe", sends a DM to "Scribe" and asserts the rendered tool result says "Message dispatched to @writer" (base: "No teammate named 'Scribe'"), plus the sender's state.db tool row.