Compatibility: Custom Classes backtick syntax (`.classname` before block)

[Dev-Ray-Hunt]

Goal

Support the Custom Classes plugin syntax — an inline code marker placed on the line before a block element.

Syntax

``.highlight``
This paragraph gets the highlight class.

```.stat-block``
| header |
|---|
| data |

Expected Output

<p class="highlight">This paragraph gets the highlight class.</p>
<table class="stat-block">...</table>

Notes

• Plugin: https://github.com/LilaRest/obsidian-custom-classes
• Marker goes BEFORE the block (opposite of our current post-line approach)
• Degrades gracefully in other editors (renders as inline code)
• Actively maintained and Live Preview compatible