Improved Conversations, Macros, Partner Creation, And Legacy Scheduling

Added an admin Create partner flow from the partner selector, with a single backend step that provisions the partner, default brands, business hours, and related records.

Added an Attachments section on the conversation side panel so you can browse every file on a thread in one place, open files in a new tab, and keep your expand or collapse preference across conversations.

Macros: managing folders no longer surfaces other partners' folders; the list stays scoped to your partner.

Improved the Choose your plan experience: fewer dead-ends on refresh, clearer support and setup CTAs, and better behavior when no plans are available.