MultiSelectInput component - Code Implementation

[batmaster]

Implement MultiSelectInput component following React Admin patterns.

Component Type: Form Input
Category: Input Components
Priority: HIGH

Requirements:

• Multi-select input with multiple option selection
• Support for different selection modes and validation
• Integration with form validation system
• Accessibility features (ARIA, keyboard navigation)
• Theme integration with consistent styling
• TypeScript interfaces for all props
• Support for custom option renderers

React Admin Equivalent: component
Integration: Works with form validation, selection systems

Dependencies: Form validation system, theme system, selection libraries

Acceptance Criteria:

• Component renders correctly as multi-select input
• Multiple selection working properly
• Selection modes implemented
• Accessibility features implemented
• Theme integration working
• TypeScript compilation passes
• Component exported from package index

Related tasks:

• Testing: [To be created]
• Documentation: [To be created]