# Phase 163 Summary

Status: implemented in working tree

## Goal

Close the next post-`v1.88` gap by turning transition resumption into an
operator-visible transition-commitment surface instead of leaving operators to
infer whether a resumed route has become the durable committed bounded lane.

## What Landed

- route transition-commitment payload construction and runtime/read-path
  rendering in:
  - `research/knowledge-hub/knowledge_hub/runtime_read_path_support.py`
- runtime protocol rendering for the new transition-commitment section in:
  - `research/knowledge-hub/knowledge_hub/kernel_markdown_renderers.py`
  - `research/knowledge-hub/knowledge_hub/runtime_bundle_support.py`
- replay support for `none`, `waiting_resumption`, `pending_commitment`, and
  `committed` transition-commitment visibility in:
  - `research/knowledge-hub/knowledge_hub/topic_replay.py`
- public runtime-bundle schema coverage for `route_transition_commitment` in:
  - `research/knowledge-hub/runtime/schemas/progressive-disclosure-runtime-bundle.schema.json`
- one new isolated acceptance lane:
  - `research/knowledge-hub/runtime/scripts/run_hypothesis_route_transition_commitment_acceptance.py`
- new contract/runtime coverage in:
  - `research/knowledge-hub/tests/test_hypothesis_route_transition_commitment_contracts.py`
  - `research/knowledge-hub/tests/test_runtime_scripts.py`
  - `research/knowledge-hub/tests/test_topic_replay.py`
  - `research/knowledge-hub/tests/test_schema_contracts.py`
- documentation and runbook updates across:
  - `research/knowledge-hub/README.md`
  - `research/knowledge-hub/runtime/README.md`
  - `research/knowledge-hub/runtime/AITP_TEST_RUNBOOK.md`

## Outcome

Phase `163` now closes the first bounded route transition-commitment slice:

- `status --json` and the runtime protocol note now surface one
  `route_transition_commitment` summary with `none`, `waiting_resumption`,
  `pending_commitment`, and `committed` states
- `replay-topic --json` exposes the same transition-commitment payload plus
  the commitment status on the replay surface
- the new isolated acceptance proves AITP can make durable committed-lane state
  explicit without widening into fresh runtime mutation
