Redesign LCP dialog with shared localized strings

[mickael-menu]

Changelog

Changed

• The iOS minimum deployment target is now iOS 15.0.

LCP

• The LCP dialog used by LCPDialogAuthentication has been redesigned.
  • Breaking: The LCP dialog localization string keys have been renamed. If you overrode these strings in your app, you must update them.
• LCP localized strings are now sourced from the thorium-locales repository. Contributions are welcome on Weblate.

Migration Guide

LCP Dialog Localization Keys

The LCP dialog localization string keys have been renamed to align with the thorium-locales repository. Contributions are welcome on Weblate.

If you overrode any of these strings in your app's Localizable.strings, you must update them to use the new keys:

Old Key	New Key
ReadiumLCP.dialog.cancel	readium.lcp.dialog.actions.cancel
ReadiumLCP.dialog.continue	readium.lcp.dialog.actions.continue
ReadiumLCP.dialog.forgotYourPassphrase	readium.lcp.dialog.actions.recoverPassphrase
ReadiumLCP.dialog.hint	readium.lcp.dialog.passphrase.hint
ReadiumLCP.dialog.header	readium.lcp.dialog.message
ReadiumLCP.dialog.details.title	readium.lcp.dialog.info.title
ReadiumLCP.dialog.details.body	readium.lcp.dialog.info.body
ReadiumLCP.dialog.details.more	readium.lcp.dialog.info.more
ReadiumLCP.dialog.error.incorrectPassphrase	readium.lcp.dialog.errors.incorrectPassphrase
ReadiumLCP.dialog.title	readium.lcp.dialog.title
ReadiumLCP.dialog.passphrase.placeholder	readium.lcp.dialog.passphrase.placeholder

The following legacy strings from the old UIKit-based dialog have been removed entirely:

• ReadiumLCP.dialog.prompt.message1
• ReadiumLCP.dialog.prompt.message2
• ReadiumLCP.dialog.reason.passphraseNotFound
• ReadiumLCP.dialog.reason.invalidPassphrase
• ReadiumLCP.dialog.prompt.forgotPassphrase
• ReadiumLCP.dialog.prompt.support
• ReadiumLCP.dialog.prompt.continue
• ReadiumLCP.dialog.prompt.passphrase
• ReadiumLCP.dialog.support
• ReadiumLCP.dialog.support.website
• ReadiumLCP.dialog.support.phone
• ReadiumLCP.dialog.support.mail

[Copilot]

Pull request overview

This pull request redesigns the LCP (Licensed Content Protection) authentication dialog from a UIKit-based interface to SwiftUI, while aligning localization strings with the thorium-locales repository. The minimum iOS deployment target has been increased from iOS 13.4 to iOS 15.0 to support the new implementation.

Changes:

• Redesigned LCP authentication dialog using SwiftUI with backwards compatibility helpers for iOS 15-16
• Integrated localization strings from the thorium-locales repository with an automated conversion script
• Updated minimum iOS deployment target to iOS 15.0

Reviewed changes

Copilot reviewed 11 out of 12 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
Sources/LCP/Resources/en.lproj/Localizable.strings	Updated with new localization keys from thorium-locales, replacing previous manual translations
Sources/LCP/Resources/fr.lproj/Localizable.strings	Added empty French localization file (auto-generated, awaiting translations)
Sources/LCP/Authentications/LCPDialogViewController.swift	Simplified to host SwiftUI dialog instead of UIKit-based implementation
Sources/LCP/Authentications/LCPDialogAuthentication.swift	Removed navigation controller wrapper, now presents dialog directly
Sources/LCP/Authentications/LCPDialog.swift	Added iOS 15 compatibility helpers and renamed localization keys
Sources/LCP/Authentications/Base.lproj/LCPDialogViewController.xib	Removed UIKit interface builder file (no longer needed)
Package.swift	Updated minimum iOS deployment target to 15.0
Makefile	Added update-thorium-locales target for automated localization updates
BuildTools/Scripts/convert-thorium-localizations.js	New script to convert thorium-locales JSON files to Apple .strings format
CHANGELOG.md	Documented breaking changes and new features
.gitignore	Added Claude AI development artifacts

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