Send reactions to messages

[sgrimee]

Summary

Implement the ability to send reactions to messages. This is the complement to displaying reactions and will require similar research to understand the API endpoints.

Current Status

• No known API endpoint for sending reactions
• webex-rust crate lacks reaction sending support
• May need to reverse engineer the API calls
• Potentially first implementation of this feature

Research Required

• Find API endpoint for sending reactions
• Understand reaction format and encoding requirements
• Research what reaction types are supported
• Test API calls to send different reaction types
• Determine authentication and permission requirements

Implementation Challenges

• Unknown API endpoint and payload format
• Need to extend webex-rust crate with sending capability
• UI design for reaction selection in TUI
• Integration with existing message interaction system

Dependencies

• This depends on issue Display reactions to messages #84 (Display reactions to messages)
• Research from displaying reactions will inform sending implementation
• May share common API understanding and data structures

Approach

1. Build on research from reaction display feature
2. Capture network traffic from official clients to understand API calls
3. Experiment with different API endpoints and payloads
4. Implement sending logic in webex-rust crate
5. Add UI for reaction selection and sending
6. Test with different reaction types and message formats

Acceptance Criteria

• Users can send reactions to messages
• Multiple reaction types are supported
• Reactions appear immediately in local UI
• Sent reactions sync with other clients
• Error handling for failed reaction sends

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