Add Flux Multilingual support to WorkersAIFluxSTT

[whoiskatrin]

Summary

Fixes #1441.

This adds @cloudflare/voice support for configuring Deepgram Flux multilingual transcription through WorkersAIFluxSTT.

Previously, WorkersAIFluxSTT always called @cf/deepgram/flux with only the default audio and end-of-turn options, so callers could not request flux-general-multi or pass language hints for non-English or multilingual voice agents.

Changes

• Add model to WorkersAIFluxSTTOptions so callers can request Deepgram Flux variants such as flux-general-multi.
• Add languageHints to WorkersAIFluxSTTOptions to bias Flux Multilingual toward expected languages.
• Forward multilingual configuration through the Workers AI websocket input as model and language_hint.
• Automatically set model: "flux-general-multi" when languageHints are provided and no explicit model is set.
• Preserve existing default behavior when no multilingual options are provided.
• Add tests covering Workers AI Flux input construction.
• Update packages/voice/README.md with multilingual examples.
• Add a changeset for @cloudflare/voice.

Example

// Multilingual auto-detect
transcriber = new WorkersAIFluxSTT(this.env.AI, {
  model: "flux-general-multi"
});

// Bias recognition toward expected languages
transcriber = new WorkersAIFluxSTT(this.env.AI, {
  languageHints: ["en", "es"]
});

When languageHints is provided without model, WorkersAIFluxSTT automatically requests flux-general-multi.

Validation

Passed:

npm run test -w @cloudflare/voice -- src/tests/workers-ai-providers.test.ts
npm run test:workers -w @cloudflare/voice
npm run build -w @cloudflare/voice
npx oxfmt --check packages/voice/src/workers-ai-providers.ts packages/voice/src/tests/workers-ai-providers.test.ts packages/voice/README.md .changeset/fuzzy-badgers-speak.md

Notes:

• npm run test -w @cloudflare/voice

[changeset-bot]

🦋 Changeset detected

Latest commit: 3bb6e68

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@cloudflare/voice	Minor

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[devin-ai-integration]

✅ Devin Review: No Issues Found

Devin Review analyzed this PR and found no potential bugs to report.

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commit: 3bb6e68