Migration 0033: adds teams.lifecycle ('permanent' | 'ephemeral') and a
topology_runs.team_id back-ref with a partial index for the sibling-in-
flight check.
cm-db repo:
- teams::insert_team_with_lifecycle (insert_team keeps the permanent default)
- topology_runs::enqueue_run_for_team (populates team_id)
- topology_runs::check_ephemeral_teardown — atomic SELECT that only
returns Some when the team is ephemeral AND no siblings are still
queued/running; carries the workspace + bound claw ids for cleanup.
cm-api:
- topology_worker post-terminal hook maybe_teardown_ephemeral_team
runs deprovision_claw on each bound claw (best-effort; failures log
but don't block Postgres deletion), then hard_purge each agent row,
then delete_team.
- routes::teams::build_team_with_lifecycle (build_team keeps default);
run_team enqueues with team_id.
- planner ScaffoldRequest gains mode; lifecycle_for(mode) sets the team
to ephemeral for scheduled + triggered, permanent otherwise.
Frontend MasterPlannerModal passes mode in the scaffold payload so the
backend can derive lifecycle without duplicating the mode taxonomy.
Tests: 3 new (returns claws when no siblings, holds when siblings queued,
ignores permanent teams). 10/10 topology_jobs green; workspace clippy
--tests clean.
