CB-609: bridge_ack takes target, not ticket (template must match CLAUDE.md)

7-Use-Cases.md

@@ -366,7 +366,7 @@ below are the procedure — run them in order, every task, not only the big ones
    what makes them reliable. Where the project ships no such skill, spell the procedure out in the
    brief instead. The brief is self-contained — the worker sees your message and the repo, nothing
    of your context, your plan, or your screen.
-5. **Collect** — `bridge_poll{ticket}` → `bridge_ack{ticket, msgId}`. Answer a worker's `bridge_ask`
+5. **Collect** — `bridge_poll{ticket}` → `bridge_ack{target, msgId}`. Answer a worker's `bridge_ask`
    with `bridge_send{turnId, content}` — **not** `sessionId`. A worker gone quiet is diagnosed with
    `bridge_status`, never by reading its terminal; it also reports an open question and the `turnId`
    that answers it. **A worker's ask waits ~55 seconds, and no nudge makes that longer** — so never