Feature: Implement Heading Permalinks with Hover/Visible Chain Icon

[zihanKuang]

Introduce a feature that allows users to easily obtain and share direct hyperlinks (anchor links) for each heading (e.g., H1, H2, H3, H4) in Layer5 Docs. This should be visually indicated by a chain icon (🔗) associated with each heading, which could either appear on mouse hover or be always visible.

The functionality on GitHub Docs serves as a good example: https://docs.github.com/en/account-and-profile/setting-up-and-managing-your-personal[…]/managing-user-account-settings/changing-your-github-username

[FavourTy]

Hi @zihanKuang I would like to work on this issue

[HIMU-2001]

Hi @zihanKuang ,

I'd love to take this up! Just wanted to confirm a couple of things before I proceed:

1. Should the permalink icon (🔗) appear only on hover, or do we want it to always be visible?
2. Do we have any existing styling or behavior guidelines for the icon placement and animation (e.g., fade in/out on hover)?
3. Should it support all headings (h1 through h4) across all content pages, or only within the main documentation content?

Please assign this to me if everything looks good. I'd be happy to help implement this!

Thanks!

[zihanKuang]

@HIMU-2001 ,Thanks! When you're implementing this, please pay attention to the issues mentioned here: #597 😎

[HIMU-2001]

Hi @zihanKuang ,

Could you please take a look at the PR : 606

Thank You.