Add comprehensive agent inbox functionality including:
- Status filter dropdown to filter conversations by bot/waiting/active/resolved
- Priority tags displayed in conversation list for non-normal priorities
- Internal notes feature with visual distinction (orange styling, dashed border)
- Quick replies panel showing shortcut tags with tooltip previews
- Transfer modal for moving conversations to queues or agents
- Transfer to bot action for returning conversations to bot handling
- Resolve conversation action to close conversations
- Helper functions for message styling (background, color, border)
- Refactored render functions for improved code organization
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>