Feature request: inline WYSIWYG / live-preview editing for Markdown

Summary

Add inline WYSIWYG (or live-preview) editing for Markdown, so users can edit the rendered view directly instead of the raw markup.

Problem

Today Markdown lives in two disconnected modes:

• Preview renders it in a clean, human-readable form (headings, lists, bold, links).
• Editing drops you into the raw text, where you see the control characters #, *, -, [](), etc.

So to change formatting you have to keep the Markdown syntax in your head and mentally map the rendered view back to the raw symbols. It's a context switch every time you edit.

Proposed solution

Let users edit text in the rendered form — the way Notion, Typora, or Obsidian (Live Preview) work: you type and edit clean text, and formatting is applied in place without manually inserting syntax characters.

Two acceptable flavors:

• Full WYSIWYG — control characters are never shown.
• Live Preview — syntax is hidden on inactive lines and revealed only on the line you're currently editing (Obsidian-style).

A WYSIWYG ⇄ Raw toggle would keep power users who want the source happy.

Benefits

• Lower barrier for users who don't know Markdown syntax.
• Fewer markup mistakes.
• Faster edits — no switching between "raw" and "preview".