Status from artifacts — the roll-up that can't lie, and the not-ready call — step 7 of 8

Write ready_to_ship(tasks) — the go/no-go, computed.

Each task has id, launch_blocking, and the three acceptance-record fields. Using the provided task_rag, return (verdict, blockers):

• blockers: ids (in list order) of tasks where launch_blocking is True AND the derived rag is not "green".
• verdict: "GO" if blockers is empty, else "NO-GO".

A red or amber on a non-blocking task never blocks the release — it rides along in the notes, not in this gate.

Two releases run. Expected output:

release A: NO-GO — T-2, T-5
release B: GO