Disk Browser hides folders with dots in name (e.g. cc0textures.com)

[blakelinkd]

Summary

Browser listing can hide valid folders when the folder name contains a dot (.), for example Textures from cc0textures.com - Part 2.

This affects Disk paths and can also affect Cloud paths with dotted folder names.

Repro

1. Open ArmorPaint.
2. Go to Browser -> Disk.
3. Navigate to a folder containing dotted directory names (example: /home/blake/Downloads).
4. Observe missing folders with names like:
   • Textures from cc0textures.com - Part 2
   • Textures from sharetextures.com - Part 4

Actual

Some valid directories are not shown.

Expected

All valid directories should be listed, including names containing dots.

Root Cause

Browser listing logic relies on dot-based filename heuristics to infer file vs folder.
Dotted folder names can be misclassified and filtered as unknown file extensions.

Fix Direction

Use explicit filesystem directory checks when classifying entries, rather than relying on . in the name.