Markdown Viewer Mobilev1.3.0

What changed

• New featureAdded a Collapse All button to close all expanded folders in the library tree with one tap.
• New featureIntroduced the ability to rename folder and GitHub repository sources via long-press.
• UXImplemented instant UI updates for renamed sources across the drawer, library title, and search results.

Original release notes

Added a Collapse All button next to the library search bar — close every expanded folder in the tree with a single tap.
You can now rename folder and GitHub repository sources. Long-press a source and choose Rename to give it a shorter, friendlier label that fits the drawer.
Renamed sources update everywhere instantly — drawer, library title, search results — without needing to reopen the app.