Feature request: Controls and Help buttons open external docs instead of showing help in the GUI

[NileshArnaiya]

Describe the issue:

Environment

• OS: macOS 15.7.4 (aware macOS isn't fully supported)
• kilosort: v4.1.3

Current behavior

Clicking "Controls" or "Help" in the main window opens
https://kilosort.readthedocs.io/en/latest/gui_guide.html in a browser.

Why this is a problem

• Breaks flow: you leave the app to learn how to use the app

Proposal

Replace both with an in-app modal:

• Controls -> keyboard/mouse shortcut table, generated from the same source
  as the docs so it can't drift
• Help -> short panel for the current context, with a "full docs" link out

Happy to implement this. Two questions before I start:

1. Modal dialog, or dockable side panel?
2. Would you accept the shortcut table being generated from a single dict
   in the codebase that the sphinx docs also read from?

PS: This is mainly a UI/UX enhancement.

Reproduce the bug:

Error message:

Version information:

Environment

• OS: macOS 15.7.4 (aware macOS isn't fully supported)
• kilosort: v4.1.3
• python: 3.11.15

[jacobpennington]

Can discuss that as a possibility for the future, but for the moment that is the intended behavior (not a bug). Clicking opens the links, while mouse-hover opens in-GUI help.