Flatpak krokiet

[qarmin]

• Adds removing files via portal, so files can be removed to trash
• Update to slint 1.15

Fixes #1197
Fixes #811
Fixes #1545
Fixes #1720 - updating to slint 1.15, which fixes crash, that happened there

[Copilot]

Pull request overview

This PR adds Flatpak support to Krokiet by implementing XDG portal-based trash functionality, addressing file deletion issues in sandboxed environments (Flatpak). It also consolidates per-tool settings for hard links and cache management into global settings, updates Slint to version 1.14.1, migrates error messages to i18n, and improves the video optimizer's CLI interface by using strongly-typed codec enums.

Changes:

• Implements XDG portal trash functionality for Linux Flatpak environments using ashpd and tokio
• Consolidates hide_hard_links and delete_outdated_cache_entries settings from per-tool to global settings
• Updates application metadata files (metainfo, desktop) with corrected IDs and license information
• Migrates numerous error messages in core library to use fluent i18n translations
• Changes video optimizer CLI to use strongly-typed VideoCodec enum instead of strings
• Re-enables Android build checks in CI with blake_pure feature

Reviewed changes

Copilot reviewed 64 out of 65 changed files in this pull request and generated 8 comments.

Show a summary per file

File	Description
czkawka_core/src/common/mod.rs	Adds XDG portal trash implementation with tokio runtime management
czkawka_core/Cargo.toml	Adds ashpd and tokio dependencies for XDG portal support
krokiet/src/settings/model.rs	Consolidates hide_hard_links and delete_outdated_cache_entries to global settings
krokiet/ui/settings.slint	Updates UI to reflect consolidated global settings
krokiet/ui/translations.slint	Adds new translation strings for consolidated settings
krokiet/i18n/en/krokiet.ftl	Adds English translations for new UI strings
czkawka_core/i18n/en/czkawka_core.ftl	Adds extensive i18n strings for error messages
czkawka_cli/src/main.rs	Updates CLI to use set_hide_hard_links() method
czkawka_cli/src/commands.rs	Changes video codec parameters from String to VideoCodec enum
data/io.github.qarmin.krokiet.metainfo.xml	New metainfo file with corrected app ID and license
data/io.github.qarmin.krokiet.desktop	Updated desktop file comment (em dash to hyphen)
.github/workflows/linux.yml	Re-enables Android build check with blake_pure feature
Cargo.lock	Updates dependencies including slint 1.14.1, ashpd, tokio

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