# Evidence and development

Use this section to inspect how PyMixEF is tested, which warning contracts are
stable, and how the project is maintained.

::::{grid} 1 2 2 2
:gutter: 3

:::{grid-item-card} Validation
:link: ../validation
:link-type: doc

Review validation layers, reproducibility classes, benchmark evidence, and
cross-engine comparison policy.
:::

:::{grid-item-card} Warnings and errors
:link: ../warnings
:link-type: doc

Look up stable warning codes, structured records, exceptions, and automation
guidance.
:::

:::{grid-item-card} Development and release
:link: ../development/index
:link-type: doc

Understand the architecture, documentation pipeline, contribution checks, and
release process.
:::
::::

```{toctree}
:maxdepth: 2

Validation <../validation>
Warnings and errors <../warnings>
Development and release <../development/index>
```