Promote ship to the user-facing delivery skill. Kind is short or long
from an explicit mode, then self-judgment, then a question, defaulting
to short. Old names remain deprecation stubs.
short-ship and long-ship share one ship-id record under .pouch/ship/<id>/.
specifier writes PRDs into spec/; delivery-loop appends evidence pointers.
Old names stay as deprecation stubs so existing installs keep working.
Keep pouch naming and .pouch/ack project state, and bring in ACK
regression mode, deployer test-environment binding, and manage-release
updates from main.
Use ~/.pouch, the pouch CLI, and .pouch.yaml as the SSOT container.
Keep the inner skills/ packages, and store ACK project state in
.pouch/ack instead of docs/ack.
ACK 0.19.0 hands test-environment deploys to the deployer skill,
documents bug-fix as a first-class scenario, and adds
docs/ack/regression.yaml harvest plus a /ack regression run.