Add Doppel model card

README.md

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+---
+license: apache-2.0
+library_name: coreml
+pipeline_tag: text-generation
+base_model: z-lab/Qwen3.5-9B-DFlash
+inference: false
+tags:
+  - coreml
+  - apple-silicon
+  - macos
+  - neural-engine
+  - speculative-decoding
+  - dflash
+  - doppel
+---
+
+# Doppel speculative-decoding companion
+
+This repository is Doppel's distribution channel for an app-specific Core ML
+conversion of
+[`z-lab/Qwen3.5-9B-DFlash`](https://huggingface.co/z-lab/Qwen3.5-9B-DFlash).
+Doppel uses it as a Neural Engine draft companion while its target model
+performs verification.
+
+## Intended use
+
+These artifacts are intended to be downloaded, verified, and invoked by
+compatible Doppel releases on Apple-silicon Macs running macOS 15 or later.
+They are an optimization for Doppel's on-device inference path.
+
+This is not a standalone language model, text generator, or supported
+developer API. It omits a standalone vocabulary head and depends on Doppel's
+exact target model, hidden-state contract, cache lineage, verification logic,
+and runtime orchestration. Loading the Core ML packages individually does not
+constitute a valid or supported inference path. For research or general DFlash
+use, start with the upstream model and project.
+
+## Artifact and integrity notes
+
+The source checkpoint is split into app-specific Core ML packages. The
+repository's `manifest.json` is the authoritative compatibility and artifact
+inventory; it records the integrity hashes checked by Doppel. Core ML's local
+compilation cache is deliberately not distributed.
+
+The repository contains no user prompts, conversations, model caches,
+telemetry, or other customer data.
+
+## Limitations
+
+This companion is qualified only as part of Doppel's complete speculative
+decoder. It must not be evaluated as an independent generator, and compatibility
+must not be inferred from a shared tokenizer or architecture name.
+
+## License and attribution
+
+The DFlash checkpoint is provided under the
+[Apache License 2.0](https://www.apache.org/licenses/LICENSE-2.0).
+Doppel pairs the conversion with the separately licensed
+[`Ornith-1.0-9B`](https://huggingface.co/deepreinforce-ai/Ornith-1.0-9B)
+target. This converted distribution remains subject to the applicable
+upstream terms. Doppel provides no support or warranty for use outside the
+Doppel app.