add benchmark and calibration charts to model card

README.md

@@ -42,6 +42,21 @@ The first request includes MLX graph and memory warm-up. On the same machine, a
 
 The published Jev-Omni H200 numbers are not transferable to this Mac mini. This model card reports local measurements only.
 
+![Local warm latency](assets/local-latency.svg)
+
+## Results
+
+The public JevBench files were evaluated with the same typed-choice mapping used by the runtime. Temperature scaling changes probabilities only; it does not change the selected option.
+
+| Benchmark | Accuracy / state macro | Micro accuracy | ECE-10 |
+|---|---:|---:|---:|
+| JevBench public · 231 decisions | **87.88%** | **87.88%** | 0.04497 raw / **0.03069** scaled |
+| DecisionBench Medium · 293 questions | — | — | Full run not published |
+
+![JevBench public accuracy](assets/jevbench-accuracy.svg)
+
+The JevBench result is our local public-set measurement, not a claim that the 4-bit MLX conversion reproduces the upstream card's protocol. The upstream [Jev-Omni card](https://huggingface.co/akhilaaa3/Jev-Omni) reports its own merged-model result separately. Dataset revisions, item filtering and scoring splits must match before comparing the numbers.
+
 ## Validation
 
 - Upstream unified verification cases: 4/4 argmax decisions matched after 4-bit conversion.
@@ -89,6 +104,12 @@ Omit `--calibration` to inspect the raw quantized probabilities. The included ca
 - [`calibration.json`](calibration.json) is the small runtime file consumed by `--calibration`.
 - The benchmark runner and raw checkpoints remain in the source project so the long DecisionBench run can be resumed without putting the full benchmark text into this model repository.
 
+## Calibration
+
+Temperature scaling was fit on 116 even-indexed public JevBench rows and checked on 115 odd-indexed rows. The fitted temperature is `T=1.11516790625`. On the full public set, ECE-10 moves from `0.04497` to `0.03069`; on the held-out split it moves from `0.06261` to `0.06774`. This is a transparent post-hoc calibration file, not a guarantee of calibrated confidence on game footage.
+
+![JevBench calibration](assets/jevbench-calibration.svg)
+
 ## Local conversion code
 
 `omni_mlx/convert.py` contains the conversion path used for this release. The original unquantized checkpoint is not bundled here; it can be obtained from the upstream repository under its own license and terms.