Add Doppel model card

README.md

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+---
+license: apache-2.0
+library_name: coreml
+pipeline_tag: automatic-speech-recognition
+base_model: Qwen/Qwen3-ASR-0.6B-hf
+inference: false
+tags:
+  - coreml
+  - apple-silicon
+  - macos
+  - on-device
+  - doppel
+---
+
+# Doppel ASR companion
+
+This repository is Doppel's distribution channel for an app-specific Core ML
+conversion of [`Qwen/Qwen3-ASR-0.6B-hf`](https://huggingface.co/Qwen/Qwen3-ASR-0.6B-hf).
+It exists so supported Doppel releases can perform speech recognition on the
+user's Mac.
+
+## Intended use
+
+These artifacts are intended to be downloaded, verified, and invoked by
+Doppel on Apple-silicon Macs running macOS 15 or later. Inference stays on the
+device.
+
+This is not a standalone ASR distribution or a supported developer API. The
+repository does not include Doppel's audio preprocessing, tokenizer assets,
+runtime orchestration, output handling, or compatibility logic. It is not
+expected to work with generic Transformers, Core ML sample code, or Hugging
+Face hosted inference. For general-purpose use, start with the upstream model.
+
+## Artifact and integrity notes
+
+The compiled Core ML components are modified from the upstream checkpoint for
+Doppel's fixed runtime contract. `manifest.json` is the authoritative artifact
+inventory and records the integrity hashes checked by the app.
+
+The repository contains no user audio, transcripts, prompts, indexes,
+telemetry, or other customer data.
+
+## Limitations
+
+Speech recognition can be inaccurate, especially with noise, overlapping
+speakers, uncommon names, code switching, or domain-specific language. Doppel
+must not treat a transcript as a verbatim or safety-critical record without
+human review.
+
+## License and attribution
+
+The upstream model is provided under the
+[Apache License 2.0](https://www.apache.org/licenses/LICENSE-2.0).
+This converted distribution remains subject to the applicable upstream terms.
+Doppel provides no support or warranty for use outside the Doppel app.