v1.2.9

Core

• Add missing id, sessionID, and messageID to MCP tool attachments (@NatChung)
• Remove unnecessary deep clones from session loop and LLM stream
• Remove User-Agent header assertion from LLM test to fix failing test

TUI

• Use structuredClone instead of remeda's clone for better performance and native support (@mhart)

Desktop

• Restore settings header mask

Thank you to 2 community contributors:

• @mhart:

• Use structuredClone instead of remeda's clone (#14351)
• @NatChung:

• fix: add missing id/sessionID/messageID to MCP tool attachments (#14345)