phsl / new-api

Summary
• Added visual model icons to dropdown options in both Token (`EditToken.js`) and Channel (`EditChannel.js`) editors.

Details
1. Token Editor
   - Imported `getModelCategories` from helpers.
   - Re-built Model Limits option list to prepend the matching icon to each model label.

2. Channel Editor
   - Imported `getModelCategories`.
   - Extended model‐option construction to include icons, unifying behaviour with Token editor.
   - Maintained existing logic for merging origin options and user-selected models.

Benefits
• Provides immediate visual identification of model vendors.
• Aligns UX with existing icon usage across the application, improving consistency and clarity.
• No functional changes to data handling; purely UI/UX enhancement.

Co-authored-by: [Your Name]