Migrate shadcn components from Radix to Base UI and adopt Field primitive for forms

[dlhck]

Overview

Migrate all shadcn/ui components from Radix UI primitives to Base UI, and update form components to use the new Field primitive pattern.

Background

Our current dashboard components are built on shadcn/ui with Radix primitives. To improve consistency, accessibility, and maintainability, we should migrate to Base UI primitives and adopt the Field primitive for form handling.

Tasks

• Audit all existing shadcn components currently using Radix primitives
• Migrate component primitives from Radix to Base UI
• Implement the new Field primitive for form components
• Update all form usages to leverage the Field primitive
• Ensure accessibility standards are maintained throughout migration
• Update component tests to reflect new implementations

Acceptance Criteria

• All shadcn components use Base UI primitives instead of Radix
• Forms use the Field primitive pattern consistently
• No regressions in functionality or accessibility
• All existing tests pass (updated as needed)