Current view: https://github.com/cal-itp/benefits/blob/main/benefits/core/views.py#L25

Figma: https://www.figma.com/design/SeSd3LaLd6WkbEYhmtKpO3/Benefits--Full-Application-?node-id=9754-52797

Acceptance Criteria

• Using HTML / browser-native <select> element
• Reuse existing focus-ring style e.g. on buttons, links for the select
• Agency selection is required to submit the form, browser native validation message indicates that a selection is required
• Active agencies are listed in alphabetical order in the select
• Selecting an agency updates the homepage copy to reflect that agency (in-place without a redirect/page change)
• Clicking Next takes you to the Eligibility Start view

Additional context