Auto Sort Bookmarks от Bobo Pikachu

Automatically organizes the Bookmarks Menu and Other Bookmarks in Firefox.

Sorting rules:
Recursively sorts all subfolders;
Treats separators as section boundaries and sorts each section independently;
Places folders first and sorts them by title from A to Z;
Sorts bookmarks by title, then by URL when titles are identical;
Distinguishes letter case and accented characters, with uppercase letters sorted first;
Uses natural numeric ordering, so Page 2 appears before Page 10;
Pauses sorting while the Firefox Library window is open to avoid interfering with bookmark management.

This extension does not collect, store, or transmit any user data.