docs: folder browsing screenshots and docs; translate folder counts

Retakes the explorer screenshots on 1.4.0 (they still showed 0.4.0) and adds
the Folders view in English and Portuguese. The folder rows' file count sat
inside .xp-lnm, which the DOM translator skips, so it stayed in Portuguese
in the English UI; it is now translated explicitly.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

README.md

@@ -77,6 +77,10 @@ A desktop app (Tauri) in the style of a file manager, designed for when Guará f
 <p align="center"><img src="docs/img/explorer-dark-en.png" width="640" alt="The explorer in the dark theme"> <img src="docs/img/settings-language-en.png" width="250" alt="Settings with the language selector"></p>
 
 - **Thumbnail grid** or **list**, grouping by day or month and virtual scrolling for tens of thousands of files.
+- **Folder browsing:** open what was found one folder at a time, like a file manager, and recover whole folders or only some subfolders and files, recreated from the ticked folder down.
+
+<p align="center"><img src="docs/img/folders-light-en.png" width="720" alt="The Folders view: the root of the recovered files with DCIM ticked, Viagens partly ticked and the folder details on the right"></p>
+
 - **Sidebar navigation** by type, real photo date (EXIF), folder, camera, confidence and GPS, with an option to hide duplicates.
 - **Finder or Explorer style selection** and full-screen **quick look** (Space, Enter or double click).
 - **Details panel** with preview, dates and metadata.