Smarter Map Control & Section Splitting Update

✨ New Features

• Added "Next Section" button for manual top-level split — users can now organize mind maps into clear, meaningful sections instead of relying solely on AI, improving comprehension and engagement.
  Screenshot Screenshot 2

• Transcription panel in branch can now be resized to fit any screen — drag the edge to adjust width.
  Demo video

🔄 Improvements

• Scrollbars on macOS are now always visible, making map navigation clearer and preventing disorientation.
  Screenshot

🛠 Fixes

• Fixed: scrolling to the transcription block was broken — now it works. Video
• Fixed: topic offset and size bug after AI text generation — branch geometry now stable.
  Screenshot

And other improvements