# Session S2 Report

Session ID: S2
Status: 已完成
Started at: 2026-04-17 23:26:01 +08:00
Completed at: 2026-04-17 23:26:40 +08:00

## Modified Files
`git diff --name-only` at report time:

```text
.planning/STATE.md
.planning/phases/165.2/PLAN.md
docs/AUDIT_REPORT_ALIGNMENT.md
docs/EXECUTION_PLAN.md
docs/protocols/L4_validation_protocol.md
docs/protocols/brain_protocol.md
docs/protocols/closed_loop_protocol.md
research/knowledge-hub/canonical/bridges/bridge--tfim-toy-model-code-method-bridge.json
research/knowledge-hub/knowledge_hub/aitp_cli.py
research/knowledge-hub/knowledge_hub/aitp_codex.py
research/knowledge-hub/knowledge_hub/l1_source_bridge_support.py
research/knowledge-hub/knowledge_hub/l1_source_intake_support.py
research/knowledge-hub/knowledge_hub/l1_vault_support.py
research/knowledge-hub/knowledge_hub/l2_compiler.py
research/knowledge-hub/knowledge_hub/l2_consultation_support.py
research/knowledge-hub/knowledge_hub/l2_graph.py
research/knowledge-hub/knowledge_hub/layer_graph_support.py
research/knowledge-hub/knowledge_hub/mode_envelope_support.py
research/knowledge-hub/knowledge_hub/protocol_manifest.py
research/knowledge-hub/knowledge_hub/runtime_bundle_support.py
research/knowledge-hub/knowledge_hub/source_distillation_support.py
research/knowledge-hub/knowledge_hub/topic_loop_support.py
research/knowledge-hub/knowledge_hub/topic_shell_support.py
research/knowledge-hub/maintainability_budgets.json
research/knowledge-hub/runtime/scripts/decide_next_action.py
research/knowledge-hub/runtime/scripts/orchestrator_contract_support.py
research/knowledge-hub/runtime/scripts/run_consultation_followup_selection_acceptance.py
research/knowledge-hub/runtime/scripts/run_first_source_followthrough_acceptance.py
research/knowledge-hub/runtime/scripts/run_mode_enforcement_acceptance.py
research/knowledge-hub/runtime/scripts/run_promotion_review_gate_acceptance.py
research/knowledge-hub/runtime/scripts/run_selected_candidate_promotion_writeback_acceptance.py
research/knowledge-hub/runtime/scripts/run_selected_candidate_route_choice_acceptance.py
research/knowledge-hub/runtime/scripts/run_staged_l2_advancement_acceptance.py
research/knowledge-hub/runtime/scripts/run_staged_l2_reentry_acceptance.py
research/knowledge-hub/tests/test_aitp_codex.py
research/knowledge-hub/tests/test_aitp_service.py
research/knowledge-hub/tests/test_hci_jargon_gate.py
research/knowledge-hub/tests/test_layer_graph_support.py
research/knowledge-hub/tests/test_runtime_profiles_and_projections.py
research/knowledge-hub/tests/test_runtime_scripts.py
research/knowledge-hub/tests/test_topic_start_regressions.py
schemas/topic-synopsis.schema.json
```

S2-owned files actually modified by this session:

```text
research/knowledge-hub/knowledge_hub/layer_graph_support.py
research/knowledge-hub/knowledge_hub/runtime_bundle_support.py
research/knowledge-hub/knowledge_hub/topic_loop_support.py
```

## Changes Summary
- `research/knowledge-hub/knowledge_hub/layer_graph_support.py`
  Replaced legacy `promote` mode check with canonical `implement` mode plus promotion/distillation signals. Added mode normalization and signal-aware L3-D detection so L3-A/L3-R/L3-D routing stays correct under the new 3-mode system.
- `research/knowledge-hub/knowledge_hub/runtime_bundle_support.py`
  Imported `normalize_runtime_mode` and changed the bounded-loop autonomy branch from `verify + iterative_verify` to `learn + derivation`. Renamed the resulting autonomy posture to `continuous_derivation_loop`.
- `research/knowledge-hub/knowledge_hub/topic_loop_support.py`
  Imported `normalize_runtime_mode` and changed auto-step budget extension from `verify + iterative_verify` to `learn + derivation`. Updated the budget-reason string to `derivation_auto_extension`.

## Conflict Check
- 越界文件:

```text
.planning/STATE.md
.planning/phases/165.2/PLAN.md
docs/AUDIT_REPORT_ALIGNMENT.md
docs/EXECUTION_PLAN.md
docs/protocols/L4_validation_protocol.md
docs/protocols/brain_protocol.md
docs/protocols/closed_loop_protocol.md
research/knowledge-hub/canonical/bridges/bridge--tfim-toy-model-code-method-bridge.json
research/knowledge-hub/knowledge_hub/aitp_cli.py
research/knowledge-hub/knowledge_hub/aitp_codex.py
research/knowledge-hub/knowledge_hub/l1_source_bridge_support.py
research/knowledge-hub/knowledge_hub/l1_source_intake_support.py
research/knowledge-hub/knowledge_hub/l1_vault_support.py
research/knowledge-hub/knowledge_hub/l2_compiler.py
research/knowledge-hub/knowledge_hub/l2_consultation_support.py
research/knowledge-hub/knowledge_hub/l2_graph.py
research/knowledge-hub/knowledge_hub/mode_envelope_support.py
research/knowledge-hub/knowledge_hub/protocol_manifest.py
research/knowledge-hub/knowledge_hub/source_distillation_support.py
research/knowledge-hub/knowledge_hub/topic_shell_support.py
research/knowledge-hub/maintainability_budgets.json
research/knowledge-hub/runtime/scripts/decide_next_action.py
research/knowledge-hub/runtime/scripts/orchestrator_contract_support.py
research/knowledge-hub/runtime/scripts/run_consultation_followup_selection_acceptance.py
research/knowledge-hub/runtime/scripts/run_first_source_followthrough_acceptance.py
research/knowledge-hub/runtime/scripts/run_mode_enforcement_acceptance.py
research/knowledge-hub/runtime/scripts/run_promotion_review_gate_acceptance.py
research/knowledge-hub/runtime/scripts/run_selected_candidate_promotion_writeback_acceptance.py
research/knowledge-hub/runtime/scripts/run_selected_candidate_route_choice_acceptance.py
research/knowledge-hub/runtime/scripts/run_staged_l2_advancement_acceptance.py
research/knowledge-hub/runtime/scripts/run_staged_l2_reentry_acceptance.py
research/knowledge-hub/tests/test_aitp_codex.py
research/knowledge-hub/tests/test_aitp_service.py
research/knowledge-hub/tests/test_hci_jargon_gate.py
research/knowledge-hub/tests/test_layer_graph_support.py
research/knowledge-hub/tests/test_runtime_profiles_and_projections.py
research/knowledge-hub/tests/test_runtime_scripts.py
research/knowledge-hub/tests/test_topic_start_regressions.py
schemas/topic-synopsis.schema.json
```

- 冲突文件: 无
- 模式名一致性: 是。S2 改动后的 3 个目标文件使用 `explore/learn/implement`，并通过 `normalize_runtime_mode` 处理兼容输入；未新增旧模式名判断。

## Test Results
- `python -c "import sys; sys.path.insert(0, r'D:\\BaiduSyncdisk\\repos\\AITP-Research-Protocol\\research\\knowledge-hub'); import knowledge_hub.layer_graph_support, knowledge_hub.runtime_bundle_support, knowledge_hub.topic_loop_support; print('import-ok')"`
  Result: `import-ok`
- `python -m pytest research/knowledge-hub/tests/test_layer_graph_support.py -v`
  Result: `3 passed`
- `python -m pytest research/knowledge-hub/tests/test_bundle_support.py -v`
  Result: `3 passed`

## Issues
- Shared workspace is dirty because multiple sessions are modifying the same repository at once. The global `git diff --name-only` output includes many files outside S2 ownership; this reflects repository-wide state, not files edited by S2.
- `git diff` emits CRLF working-tree warnings on this Windows host. These are warnings only and did not block verification.

## Next Steps
- Keep the S2 changes in `layer_graph_support.py`, `runtime_bundle_support.py`, and `topic_loop_support.py` stable for downstream test alignment.
- Let S4 continue test updates against the current S2/S3-compatible mode system.
- If requested, perform a follow-up S2-only regression pass after additional parallel-session changes land.
