fix: hand off completed triage packets to execution

[ApexWorm]

Problem\nCompleted triage could leave queued review IDs in active clusters while the persisted lifecycle remained plan. The snapshot then showed review postflight, and a later reconcile could preserve the wrong phase.\n\n## Fix\nRecognize only a completed triage board whose current review IDs are all triaged, queued, and owned by active clusters. Completion asks the lifecycle pipeline to persist execute for that board; generic, stale, nonqueued, and forced-rescan paths retain normal planning behavior.\n\n## Verification\n- python3 -m pytest -q desloppify/tests/plan\n- python3 -m pytest -q desloppify/tests/commands/plan\n- python3 -m pytest -q desloppify/tests/review/test_work_queue_plan_order_and_triage.py desloppify/tests/commands/scan/test_plan_reconcile_postflight_and_reconcile.py desloppify/tests/commands/test_queue_progress.py desloppify/tests/commands/scan/test_scan_preflight.py\n- python3 -m pytest -q desloppify/tests/engine/test_sync_split_modules_direct.py desloppify/tests/commands/test_postflight_lifecycle_integration.py desloppify/tests/commands/scan/test_plan_reconcile.py desloppify/tests/commands/resolve/test_living_plan_direct.py\n- python3 -m ruff check and ruff format --check on changed files\n\nThe full suite reaches an existing unrelated review prompt assertion failure: test_do_run_batches_dry_run_generates_packet_and_prompts expects "Previously flagged issues" in the generated prompt; it reproduces unchanged from base.