feat: update auto-form components and utilities to latest

[olliethedev]

Changes in this PR:

• pulling in latest auto-form via 'pnpm dlx shadcn@latest add ...'
• cms plugin fumadocs updated

---

Note

Modernizes the auto-form module and aligns consumers with new helpers and types.

• Migrates auto-form/utils to auto-form/helpers; updates all imports in UI, CMS, and form-builder; adds ./components/auto-form/helpers export and relocates shared-form-types under auto-form/
• Implements buildFieldConfigFromJsonSchema in helpers.tsx and updates field components (array, date, enum, radio-group, object), AutoForm, and SteppedAutoForm to use helper utilities
• Minor UI polish: Button adds default variant/size and data attributes; DialogContent removes focus outline; SelectContent default position now item-aligned and adds item indicator slot
• Docs: CMS client hooks section expanded (query/suspense/mutation), updated useContent/relation hooks to include infinite loading API details
• Version bump @btst/stack to 1.9.1; tooling: biome.json excludes test-results/

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Project	Deployment	Review	Updated (UTC)
better-stack-docs	Ready	Preview, Comment	Jan 8, 2026 3:46pm