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README.md

@@ -169,6 +169,16 @@ harder: cast shadows, embossed lettering, print over brushed metal, a plate half
 degradation suite, not the clean row, and treat every low-confidence field as one a person must confirm.
 
 
+## Fine-tuning — the higher-accuracy server model
+
+The engine above is the on-device path. Alongside it, a **Donut** model
+([`naver-clova-ix/donut-base`](https://huggingface.co/naver-clova-ix/donut-base)) is fine-tuned to read a plate
+**straight into fields** (`<s_nameplate><s_type>ups</s_type><s_manufacturer>…`) for a server / endpoint where
+the browser engine falls short. Training data is synthetic plates with real-photo degradations, plus corrected
+real plates from the field. Once trained, the weights are published in a sibling repository and linked here.
+
+Nothing on this page claims the accuracy of that model yet — it is the roadmap, not a result.
+
 ## Intended use
 
 - **Commissioning and QA walks:** photograph each unit as it is installed; confirm the delivered unit matches