Update README.md

README.md

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----
-license: gpl-3.0
----
+---
+license: gpl-3.0
+language:
+- en
+tags:
+- science
+- physics
+metadata:
+  parameterization: "slab"
+  number_of_layers: 1
+  param_ranges:
+    thicknesses: [1., 1500.]
+    roughnesses: [0., 60.]
+    slds: [-8., 16.]
+    r_scale: [0.9, 1.1]
+    log10_background: [-10.0, -4.0]
+  bound_width_ranges:
+    thicknesses: [1.0e-2, 1500.]
+    roughnesses: [1.0e-2, 60.]
+    slds: [1.0e-2, 5.]
+    r_scale: [1.0e-3, 0.2]
+    log10_background: [1.0e-2, 6.0]
+  shift_param_config:
+    r_scale: true
+    log10_background: true
+---
+# Model Card for `neutrons-1layer-basic-v1`
+
+## Summary
+This is a trained **neutron reflectometry (NR)** model designed for use with the [`reflectorch`](https://pypi.org/project/reflectorch/) package.  
+
+---
+
+## Specifications
+
+- **Number of layers**: 1 (excluding fronting and backing media; ordered from *fronting* → *backing*)  
+- **Maximum q-range**: `[0.05, 0.4]`  
+
+### Parameter Types and Ranges
+
+| Parameter            | Range                  | Units              |
+|----------------------|------------------------|--------------------|
+| Thicknesses            | `[1.0, 1500.0]`        | Å                 |
+| Roughnesses            | `[0.0, 60.0]`          | Å                 |
+| Nuclear SLDs          | `[-8.0, 16.0]`        | 10⁻⁶ Å⁻²               |
+| Intensity scaling    | `[0.9, 1.1]`           | multiplicative factor |
+| Background (log₁₀)   | `[-10.0, -4.0]`        | dimensionless      |
+
+---
+
+## Notes on Usage
+- For inference, **prior bounds on SLDs** should not exceed a width of **5 Å**.  
+
+---
+
+## License
+This model is distributed under the [GPL-3.0 license](https://www.gnu.org/licenses/gpl-3.0.html).