# Functional smoke-test record

**Evidence status:** Research-preview maize screening model evaluated on
documented development datasets and limited field samples.

These recorded checks used non-redistributed local reference images to verify
model loading, tensor shape, preprocessing, and routing behavior. They are
implementation evidence only—not an accuracy benchmark, a leakage-safe test set,
an agronomist-confirmed diagnosis, or field validation.

| Test | Expected pathway | Recorded status |
| --- | --- | --- |
| Healthy maize development reference | Stage 1 → healthy | Pass — `healthy` 0.976533 |
| Indoor/non-maize development reference | Stage 1 → not maize/unclear | Pass — `not_maize_or_unclear` 0.967990 |
| Limited maize field sample; disease label unconfirmed | Stage 1 → Stage 2 | Pass — Stage 1 `diseased` 0.980578; Stage 2 screened `northern_leaf_blight` 0.911019 |

Verification was recorded with Python 3.12, TensorFlow 2.20.0, and the packaged
FP16 files. The reference images are not included in this staging directory, so
the recorded image-level outputs are not independently reproducible from this
package alone.

The limited field sample verifies only that the routing and symptom-crop code can
run end to end. Its disease label was not independently confirmed by an
agronomist, and the predicted class is not accuracy evidence. Field validation is
incomplete.

Separately, a retrospective audit of the original v1.4 `metadata.csv` found
80,313 records, 68,786 source + group IDs, and 2,205 groups crossing
train/validation/test. The historical 0.992/0.993 development metrics are not
leakage-safe release results and must not be presented as public or field
performance. The detailed evidence is in
[`development-data-audit.json`](development-data-audit.json).

[`corrected-split-plan.json`](corrected-split-plan.json) records a deterministic
group-disjoint assignment of 57,914 train, 11,107 validation, and 11,292 test
records, with zero cross-split groups and records. That is a repair plan—not new
training or evaluation evidence. The packaged models have not been retrained or
evaluated on the corrected assignment, and the independent Ghana field holdout
is incomplete.