---
status: passed
phase: 166.1-contentful-source-registration-default
updated: 2026-04-13T12:10:53.2283281+08:00
---

# Phase 166.1 Verification

## Goal Verdict

Passed. The phase goal was to make the new concrete `L0` source-acquisition
handoff useful immediately by turning arXiv registration into a
contentful-by-default path, aligning discovery forwarding and docs to that same
default, and closing the milestone with one bounded fresh-topic proof of
`bootstrap -> handoff -> registration`. The implementation now does that.

## Must-Haves

- [x] arXiv registration now attempts content acquisition by default, with
  `--metadata-only` as the explicit lightweight opt-out
- [x] discovery-driven registration inherits the same default semantics as
  direct registration
- [x] one bounded fresh-topic proof now lands on the real repository kernel
  root and leaves durable registration artifacts

## Evidence

- `python -m pytest research/knowledge-hub/tests/test_source_discovery_contracts.py -q`
  - `13 passed`
- `python -m pytest research/knowledge-hub/tests/test_source_discovery_contracts.py research/knowledge-hub/tests/test_aitp_cli_e2e.py research/knowledge-hub/tests/test_runtime_scripts.py -q`
  - `105 passed`
- `python research/knowledge-hub/runtime/scripts/run_first_run_topic_acceptance.py --json`
  - passed on isolated temp kernel root
- `python research/knowledge-hub/runtime/scripts/run_first_run_topic_acceptance.py --package-root D:\BaiduSyncdisk\repos\AITP-Research-Protocol\research\knowledge-hub --repo-root D:\BaiduSyncdisk\repos\AITP-Research-Protocol --use-package-root-as-kernel --topic-slug jones-chapter-4-source-registration-proof-20260413 --register-arxiv-id 2401.00001v2 --registration-metadata-json D:\BaiduSyncdisk\repos\AITP-Research-Protocol\.planning\phases\166.1-contentful-source-registration-default\evidence\jones-chapter-4-source-registration-proof-20260413\metadata.json --json`
  - passed on real repository kernel root
  - `selected_action_summary` contained `discover_and_register.py` and `register_arxiv_source.py`
  - registration finished with `download_status = downloaded`
  - registration finished with `extraction_status = extracted`
  - durable proof receipt: `.planning/phases/166.1-contentful-source-registration-default/evidence/jones-chapter-4-source-registration-proof-20260413/proof.json`

## Notes

- The real-kernel proof used a local tar-backed metadata override fixture so the
  registration continuation stayed deterministic while still exercising the
  contentful default path end-to-end.
- Existing dirty `runtime/current_topic.json|md` state was preserved across the
  real-kernel proof; the fresh proof artifacts were left under the new topic
  slug instead of overwriting prior runtime context.
