Smarter Branch Sorting & Cleaner UI Update

🛠 Fixes

• Fixed: Color switcher unexpectedly visible Screenshot
• Fixed: Panel layout issues on window resize
  Before: 1, 2
  After: 1, 2
• Fixed: Layout shift of color switcher when clicking "Sort it out"
• Fixed: Tour button displayed incorrectly without files panel Screenshot
• Fixed: "Quote" button in tour not showing Screenshot
• Fixed: Unwanted deletion of center node during editing Video

✨ New Features

• New: Branches are now sorted by AI relevance and timestamp during transcription
  Speaking branch is kept at the bottom
• New: Auto-collapse based on visible branch count Screenshot

And other improvements