fix: bring back HF repo ID search in Hub

[louis-jan]

Describe Your Changes

This PR is to add back missing function where users can input HF repository ID in Hub search box to download GGUF models.

This is a part of cortex deprecation where we don't add source to cortex for this action but just fetch directly the repo information.

CleanShot.2025-07-23.at.21.46.32.mp4

Fixes Issues

• feat: Jan app uses llama.cpp model provider extension (cortex.cpp replacement) #5444

Self Checklist

• Added relevant comments, esp in complex areas
• Updated docs (for bug fixes / features)
• Created issues for follow-up changes or refactoring needed

---

Important

Reintroduces HF repository ID search in Hub for direct GGUF model downloads, updating useModelSources and adding fetchHuggingFaceRepo function with corresponding tests.

• Behavior:
  • Reintroduces HF repository ID search in Hub to download GGUF models directly.
  • Updates Hub component to fetch and display HF repository data.
  • Adds fetchHuggingFaceRepo function in models.ts to retrieve HF repo data.
• Hooks:
  • Modifies useModelSources in useModelSources.ts to handle CatalogModel instead of strings.
  • Updates tests in useModelSources.test.ts to reflect new addSource behavior.
• Tests:
  • Adds huggingface-conversion.test.ts to test conversion of HF repo data to CatalogModel.
  • Updates models.test.ts to include tests for fetchHuggingFaceRepo.
• Misc:
  • Adds HuggingFaceRepo interface to models.ts for type safety.
  • Updates index.tsx in routes/hub to integrate HF repo search and display.

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[ellipsis-dev]

Important

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1. web-app/src/hooks/__tests__/useModelSources.test.ts:237

• Draft comment:
  Good update: the tests now assert state changes for addSource using CatalogModel objects instead of relying on console.log.
• Reason this comment was not posted:
  Confidence changes required: 0% <= threshold 50% None

2. web-app/src/routes/hub/__tests__/huggingface-conversion.test.ts:4

• Draft comment:
  Comprehensive tests for the conversion logic; consider extracting convertHfRepoToCatalogModel into a shared utility module to avoid duplicating the logic in the component.
• Reason this comment was not posted:
  Confidence changes required: 33% <= threshold 50% None

3. web-app/src/routes/hub/index.tsx:103

• Draft comment:
  Using a case‐insensitive regex to remove the file extension is a solid improvement over a plain string replace.
• Reason this comment was not posted:
  Confidence changes required: 0% <= threshold 50% None

4. web-app/src/routes/hub/index.tsx:86

• Draft comment:
  The conversion logic here is duplicated from the tests; consider extracting it to a shared helper to improve maintainability.
• Reason this comment was not posted:
  Confidence changes required: 33% <= threshold 50% None

5. web-app/src/routes/hub/index.tsx:139

• Draft comment:
  Consider using a debouncing utility instead of manual setTimeouts for handling repo search updates, to simplify the logic.
• Reason this comment was not posted:
  Confidence changes required: 33% <= threshold 50% None

6. web-app/src/routes/hub/index.tsx:516

• Draft comment:
  The global constant IS_LINUX is used for disabling the overlay. Ensure it is defined or imported to avoid runtime issues.
• Reason this comment was not posted:
  Comment was not on a location in the diff, so it can't be submitted as a review comment.

7. web-app/src/services/__tests__/models.test.ts:277

• Draft comment:
  FetchHuggingFaceRepo tests are thorough, covering various input formats and error scenarios. Nice job!
• Reason this comment was not posted:
  Confidence changes required: 0% <= threshold 50% None

Workflow ID: wflow_R4OMsjiYLLhfk9cK

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[github-actions]

Barecheck - Code coverage report

Total: 36.91%

Your code coverage diff: -0.04% ▾

Uncovered files and lines

File	Lines
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web-app/src/services/models.ts	244