## Summary
- make the fetch response-body cast explicit across DOM and desktop
TypeScript library definitions
- preserve the existing async byte-stream runtime behavior
## Test plan
- `pnpm --filter @fusion/dashboard exec vitest run
src/stt/__tests__/model-manager.test.ts --reporter=dot`
- `pnpm --filter @fusion/desktop typecheck`
- `pnpm --filter @fusion/dashboard typecheck`
- `node scripts/check-changeset-format.mjs`
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **Bug Fixes**
* Improved desktop build typechecking for streamed speech-model
downloads by refining how streamed response bodies are interpreted for
TypeScript.
* Preserved runtime behavior, including streaming, integrity/hash
checking, file writing, and cancellation handling.
* **Maintenance**
* Updated the release metadata so this fix is published with the correct
patch classification.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
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