# Progress Log

## Session: 2026-05-27

### Phase 1: Inventory
- **Status:** in_progress
- **Started:** 2026-05-27
  - Actions taken:
  - Loaded required conversation-start skill.
  - Listed repository files.
  - Checked git branch and dirty state.
  - Checked for repo instruction files.
  - Created audit planning files.
  - Files created/modified:
  - `task_plan.md`
  - `findings.md`
  - `progress.md`

### Phase 2: Architecture Review
- **Status:** in_progress
- Actions taken:
  - Read training entrypoint, trainer registry, base trainer, supervised trainer.
  - Read segmentation configs and experiment scripts.
  - Read local ignored data package implementation.
  - Read XNet2d model implementation and tool modules for loss/metrics/optimizer/config.
  - Checked dependency/import availability and syntax compilation.
- Files created/modified:
  - `findings.md`
  - `progress.md`

## Test Results
| Test | Input | Expected | Actual | Status |
|------|-------|----------|--------|--------|
| Dependency import check | `python` import selected packages | Core packages import | Only `yaml` imported; ML dependencies missing | Partial |
| Syntax compilation | `python -m py_compile ...` | No syntax errors | Passed | Pass |
| Dependency import check in `xnet_mamba` | import selected packages | Core packages import | `torch`, `monai`, `ptwt`, `timm`, `triton`, `PIL` import; `pytest` and `swanlab` missing | Partial |
| XNet2d shape test | direct call to `tests.test_xnet_2d` in `xnet_mamba` | `seg_logits` shape equals input spatial size | Passed | Pass |
| BUSI split check | `scripts/generate_project_split.py --dataset BUSI --root data/BUSI --seed 42` | Train/val splits load | 624 train, 156 val | Pass |
| CPU smoke training | 1 epoch small BUSI run on CPU | Training loop completes | Failed in VMamba `cross_scan_fn`: expected cuda device, got cpu | Fail |
| CUDA smoke training | 1 epoch small BUSI run on CUDA | Training loop completes | Passed 312/312 steps, final total loss 0.8458519516847073 | Pass |

### Phase 5: Readiness Fixes
- **Status:** complete
- Actions taken:
  - Updated `.gitignore` to keep `/data/` ignored while allowing `lib/data/` tracking.
  - Added root `requirements.txt`.
  - Added `tests/test_xnet_2d.py`.
  - Verified syntax compilation.
  - Verified XNet2d shape behavior in `xnet_mamba`.
  - Verified BUSI project splits.
  - Ran CPU smoke and recorded VMamba CPU limitation.
  - Ran CUDA smoke successfully.
- Files created/modified:
  - `.gitignore`
  - `requirements.txt`
  - `tests/test_xnet_2d.py`
  - `task_plan.md`
  - `findings.md`
  - `progress.md`

## Error Log
| Timestamp | Error | Attempt | Resolution |
|-----------|-------|---------|------------|
| 2026-05-27 | CPU XNet2d/Trainer fails with `ValueError: Expected a cuda device, but got: cpu` in `lib/modules/lib_mamba/csm_triton.py` | Direct shape test and CPU 1-epoch smoke | Shape test disables global branches on CPU; full smoke verified on CUDA |

## 5-Question Reboot Check
| Question | Answer |
|----------|--------|
| Where am I? | Phase 1 repository inventory |
| Where am I going? | Architecture review, light verification, Chinese status summary |
| What's the goal? | Summarize repository state for future work |
| What have I learned? | See `findings.md` |
| What have I done? | See above |