Release v3.15.2

[3.15.2] - 2025-05-02

• Fix terminal performance issues
• Handle Mermaid validation errors
• Add customizable headers for OpenAI-compatible provider (thanks @mark-bradshaw!)
• Add config option to overwrite OpenAI's API base (thanks @GOODBOY008!)
• Fixes to padding and height issues when resizing the sidebar (thanks @zhangtony239!)
• Remove tool groups from orchestrator mode definition
• Add telemetry for title button clicks