fix(stt): limit Soniqo model options

[ComputelessComputer]

• Only advertise Soniqo Parakeet Streaming and Parakeet Batch in the local STT model list.
• Keep legacy Soniqo Omnilingual and Qwen model IDs parseable for existing configs.

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Note

Low Risk
Low risk: this only narrows the advertised Soniqo model list while keeping legacy model IDs parseable; main risk is UI/config expectations changing due to fewer selectable models.

Overview
Limits the local STT SUPPORTED_MODELS list to only advertise Soniqo Parakeet Streaming/Batch, removing Omnilingual and Qwen variants from the selectable model set.

Introduces SoniqoModel::selectable() (distinct from SoniqoModel::all()) and updates parsing/tests to ensure legacy Soniqo model IDs/repos remain supported while only the curated subset is surfaced.

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[cursor]

Cursor Bugbot has reviewed your changes and found 1 potential issue.

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