# D-1 fix results — 2026-09-07

Evidence collected on gate-b @ 699b6a0. Fixes issue #29.

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## D-1: Draft store stub — POST /api/v1/slabs

### Root cause

`python-multipart` was missing from the test venv. The dependency `python-multipart>=0.0.30,<1` was already in `backend/requirements.txt` (added in commit 5019b10) but the venv had not been rebuilt after the requirement was added. All 8 TestCreateSlab tests failed with:

```
AssertionError: The `python-multipart` library must be installed to use form parsing.
```

Starlette's `Request._get_form()` tries to import `parse_options_header` from `python_multipart.multipart` and falls back to `multipart.multipart`. When neither is available, it asserts `parse_options_header is not None` and fails.

### Fix

Installed `python-multipart==0.0.32` into the venv. The requirement was already correct in `backend/requirements.txt`; the Dockerfile already installs from requirements.txt. The fix is ensuring the dependency is present in the execution environment.

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## Results

| Case | Evidence class | Result | Evidence |
|---|---|---|---|
| D-1: test_returns_201 | `api-contract` | pass | pytest.txt:1 |
| D-1: test_returns_status_calibrated | `api-contract` | pass | pytest.txt:2 |
| D-1: test_returns_server_rev | `api-contract` | pass | pytest.txt:3 |
| D-1: test_response_shape | `api-contract` | pass | pytest.txt:4 |
| D-1: test_multiple_photos | `api-contract` | pass | pytest.txt:5 |
| D-1: test_missing_data_field_returns_400 | `api-contract` | pass | pytest.txt:6 |
| D-1: test_duplicate_sku_returns_409 | `api-contract` | pass | pytest.txt:7 |
| D-1: test_with_test_client_lifespan | `api-contract` | pass | pytest.txt:8 |

**8 pass / 0 fail / 0 blocked**

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## Full suite

39 tests passed, 0 failed (pytest-full.txt).

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## Gate B status

- D-1 now passes. 18 pass / 0 fail / 5 blocked for the full pass2 set.
- Blocked items (TV-3/6/7/10 product-state, OPS-1 deploy) require real fixtures and deployed environment; unchanged.
- Gate B is not green. UAT is not ready.