HuggingFace operator: stacked PR split - alignment check

[PG1204]

Hi team, the MCS team would like to align on how we should be splitting the HuggingFace operator feature before opening the remaining PRs.

The feature is ~5,000 lines of code across ~25 files on our huggingFace branch. To keep each PR reviewable, we sliced it into 9 stacked PRs of ~500 lines each. The PRs are sequential: PR 2 branches off PR 1, PR 3 off PR 2, etc., so they need to land in order. PR 1 is already open as #5124.

Here is the split we have in mind:

A few notes on the choices:

• PR 2 (~800 lines) is slightly over budget because it's the smallest unit that compiles and runs end-to-end: the refactored operator skeleton plus the text-generation codegen. Splitting it further would land code that doesn't execute on its own.
• PRs 3–5 each add one task-family codegen file (image, audio + media-gen, QA/ranking) on top of the dispatcher pattern established in PR 2. These are mechanical to review once the pattern lands.
• PR 6 (~1000 lines) is the only one meaningfully over budget. It is all frontend - hugging-face.component.{ts,html,scss,spec.ts} plus the formly + app.module.ts registrations.

We'd love your guidance on two things:

1. Does the overall slicing align with what you're looking for? Anything you'd like us to regroup, merge, or split differently?

2. For PR 6 specifically: since it's noticeably larger than the others and is all frontend, would you prefer us to split it further (e.g., separate out the .spec.ts, the .scss, or the formly/module registrations into their own PRs), or is it OK to keep the task-selector / model-browser UI together as one cohesive unit? Our concern with splitting is that the component, its styles, and its tests are tightly coupled, so fragmenting them may make individual PRs less reviewable on their own.

Happy to adjust the plan before we open PRs 2-9. Thanks!

[juliethecao]

To build off from this post, several PRs depend on earlier ones and won't compile on their own. Is there any preference if we open them in parallel or open them sequentially in dependency order so each PR is independently mergeable? As of now, we are working on the other PRs simultaneously and will put them up in order as the previous ones get approved. However, we are open to discussing an alternate way such that all PRs can go up in one shot.

[chenlica]

A minimal requirement for each PR is that the codebase with the PR should compile. Multiple PRs should be merged sequentially.