docs: prefer hosted Kumo docs for agent lookup

[mattrothenberg]

Summary

• Add docs-first lookup guidance for Kumo usage/API questions.
• Point agents to the hosted LLM index, component markdown pages, and hosted registry before local package files.
• Clarify that installed package registry lookup is for version-specific debugging or package/build investigation.
• Document consumer CLI usage with pnpm exec kumo doc <ComponentName> or npx @cloudflare/kumo doc <ComponentName>.

Testing

• Ran a local behavioral check with temporary consumer fixtures and confirmed docs-first guidance made the first lookup use hosted Kumo component markdown instead of installed package files.

• Ran git diff --check.

• Pre-push changeset validation passed.

• Reviews

• bonk has reviewed the change

• automated review not possible because: documentation-only guidance update

• Tests

• Tests included/updated

• Automated tests not possible - manual testing has been completed as follows: local behavioral check for lookup source selection plus git diff whitespace validation

• Additional testing not necessary because: documentation-only guidance update

[pkg-pr-new]

npm i https://pkg.pr.new/@cloudflare/kumo@590

commit: bebff92

[github-actions]

Docs Preview

View docs preview

Commit: bebff92

[github-actions]

Visual Regression Report — 20 changed, 20 unchanged

20 screenshot(s) with visual changes:

Button / Basic

317 px (0.31%) changed

Before	After	Diff

Button / Variant: Outline

269 px (0.26%) changed

Before	After	Diff

Button / Loading State

3 px (0%) changed

Before	After	Diff

Dialog / Dialog With Actions

298 px (0.29%) changed

Before	After	Diff

Dialog / Dialog Basic

396 px (0.39%) changed

Before	After	Diff

Dialog / Dialog Alert

744 px (0.73%) changed

Before	After	Diff

Dialog / Dialog Confirmation

352 px (0.35%) changed

Before	After	Diff

Dialog / Custom Max Width

739 px (0.73%) changed

Before	After	Diff

Dialog / Dialog With Select

500 px (0.49%) changed

Before	After	Diff

Dialog / Dialog With Dropdown

480 px (0.47%) changed

Before	After	Diff

Select / Select Basic

1,048 px (1.03%) changed

Before	After	Diff

Select / Select With Description

1,688 px (1.43%) changed

Before	After	Diff

Select / Select With Error

1,730 px (1.46%) changed

Before	After	Diff

Select / Select Loading

0 px (0%) changed

Before	After	Diff

Select / Select Multiple

1,633 px (1.61%) changed

Before	After	Diff

Select / Select Complex

1,655 px (1.4%) changed

Before	After	Diff

Select / Select Disabled Options

1,640 px (1.62%) changed

Before	After	Diff

Select / Select Disabled Items

735 px (0.72%) changed

Before	After	Diff

Select / Select Long List

2,311 px (1.95%) changed

Before	After	Diff

Select (Open)

0 px (0%) changed

Before	After	Diff

20 screenshot(s) unchanged

• Button / Variant: Primary
• Button / Variant: Secondary
• Button / Variant: Ghost
• Button / Variant: Destructive
• Button / Variant: Secondary Destructive
• Button / Sizes
• Button / With Icon
• Button / Icon Only
• Button / Disabled State
• Button / Title
• Button / Link as Button
• Dialog / Dialog With Combobox
• Dialog (Open)
• Select / Select Sizes
• Select / Select Without Label
• Select / Select Placeholder
• Select / Select With Tooltip
• Select / Select Custom Rendering
• Select / Select Grouped
• Select / Select Grouped With Disabled

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Generated by Kumo Visual Regression