Session

• Prevent closing tab during active listening.
• Prevent quitting app during live session.
• Add Deepgram API key validation.

Window

• Fix window sizing validation.
• Add min/max size caps to prevent oversized windows.
• Fix traffic light position for macOS.

Others

• Rendering optimizations for long transcript. (around 20% improvement)
• Responsive search with manual expansion.
• Various UI fixes and refactors.