Merge pull request #3119 from ImranR98/dev

- Fix wrong download size preview for sources like Uptodown (#3104)
- Minor visual tweaks

Update pubspec.yaml

Merge pull request #3097 from ImranR98/dev

Fix spacing, source names, and redundant button

Merge pull request #3095 from ImranR98/dev

Fix keyboard closing on add-app additional settings fields (as mentioned in #3000)

Merge pull request #3088 from ImranR98/dev

Various visual tweaks

Merge pull request #3081 from ImranR98/dev

- Prevent background retry tasks from spawning duplicate install tasks; only the initial check runs the install phase
- Return all install-capable activities per app for external installer selection (#3067)

Merge pull request #3066 from ImranR98/dev

- Add missing German translations
- Fix force-all update checks ignoring only-check-installed-or-track-only-apps setting (#3063)
- Fix pt-BR locale auto-detecting as pt-PT and reverting to pt-PT after app restart (#3052)

Merge pull request #3055 from bluefly000/japanese-translation

Update ja.json

Merge pull request #3037 from ImranR98/dev

Minor changes

Merge pull request #3024 from ImranR98/dev

Performance improvements, Tablet UI improvements (#1466)