📘 Description

Implement file attachment support in chat, allowing users to share documents, images, and other files.

✅ Acceptance Criteria

• Create AttachmentButton component for message input
• Create AttachmentPreview component before sending
• Create MessageAttachment component for displaying in messages
• Support multiple file selection
• Show file type icons based on mime type
• Display file size and name
• Show upload progress indicator
• Support image preview in chat
• Add download button for attachments
• Validate file types and sizes client-side
• Handle upload errors with retry option
• Create API client for attachment upload
• Ensure responsive design

🔧 Context AI

• https://github.com/OFFER-HUB/OFFER-HUB-Frontend/tree/main/docs

📋 Additional Notes

• Consider drag-and-drop into chat window
• Show image thumbnails inline in messages
• Add option to cancel upload in progress