Apply shadcn preset

[mwarman]

Describe the story

Create a shadcn theme preset using shadcn/create. Apply the preset to the project. Update the project documentation to include the preset value.

--preset b1FSRcurA

Acceptance criteria

GIVEN the shadcn preset has been applied to the web application
WHEN the web application is viewed
THEN the preset theme is visible throughout the web application

Additional context

Note: These changes will only impact the shadcn components.