# Phase 183 Summary: Promotion-Review Gate Materialization

Implemented the bounded post-`l2_promotion_review` advancement so the same
selected staged candidate no longer stalls on promotion-review summary prose.

## What changed

- added selected-candidate promotion-gate derivation helpers in
  `research/knowledge-hub/runtime/scripts/orchestrator_contract_support.py`
- taught `materialize_action_queue()` to replace stale
  `l2_promotion_review` summary output with one explicit gate-driven action
  (`approve_promotion`) once the sixth bounded continue is reached
- persisted the derived gate as the durable runtime artifacts
  `runtime/topics/<topic>/promotion_gate.json` and `promotion_gate.md`

## Verification

- `python -m pytest research/knowledge-hub/tests/test_runtime_scripts.py -k "materialize_action_queue_materializes_promotion_review_gate_after_later_continue" -q`

