Add component search support utilities

[Mbeaulne]

Tophatting

No manual tophatting required for this PR by itself. These helpers are exercised through later Components V2 PRs.

What changed

Adds small support utilities used by the Components V2 page.

This includes:

• registering component library factories where the dashboard page needs them
• a helper for copying a component reference so it can be pasted into a pipeline later

Why

These helpers keep the main Components V2 page smaller and avoid mixing setup/clipboard details into the page component.

Test plan

• Run pnpm run typecheck --pretty false
• Open the app and confirm existing registered component libraries still load normally
• If testing the copy helper through the full stack, copy a component from Components V2 and paste it into a pipeline

[Mbeaulne]

Warning

This pull request is not mergeable via GitHub because a downstack PR is open. Once all requirements are satisfied, merge this PR as a stack on Graphite.
Learn more

• Add AI rerank and detail actions to Components V2 #2323
• Add multi-source Components V2 search and filters #2322
• Add Components V2 route shell #2319
• Add component search support utilities #2318 👈 (View in Graphite)
• Extract shared component detail view #2317
• Add natural-language component rerank service #2321
• Add Agent Settings UI for AI search #2320
• Add BYOK component search settings hook #2316
• Add component search index service #2315
• master

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[github-actions]

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