UUID File Provider Domains

[i2h3]

Successor to #8635 which I had to close due to a required branch renaming. The client now relies on UUIDs for the file provider domain identifiers but leaves already existing file provider domains in place with their current legacy identifiers which are based on the account identifiers. Also includes the implementation for the empty Finder modal for signing in. Also fixes an account error state cache invalidation.

• Closes Use UUIDs for File Provider Domain Identifiers #8491
• Closes Handle Sign-in From Finder #8617
• Affects [Bug]: 3.17.0 - MacOS Finder shows “Nextcloud is signed out” for Virtual Files domain; client UI stuck at “0.00 GB of 0.00 GB” #8599

[nilsding]

/backport! 2ba2b25 to stable-3.17

[Copilot]

Pull Request Overview

This PR implements UUID-based file provider domain identifiers to replace legacy account-based identifiers, while maintaining backward compatibility for existing domains. It introduces authentication UI handling for unauthenticated file provider domains and includes account error state cache invalidation improvements.

Key changes:

• Migration from account-based to UUID-based file provider domain identifiers
• Addition of authentication modal UI for handling file provider authentication failures
• Implementation of UUID mapping system in config files for domain identification

Reviewed Changes

Copilot reviewed 36 out of 36 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
src/libsync/configfile.h & src/libsync/configfile.cpp	Adds UUID mapping functions for file provider domains
src/gui/macOS/fileproviderdomainmanager_mac.mm	Implements UUID generation and domain resolution logic
src/gui/macOS/fileproviderxpc_mac.mm	Updates method names from extension to domain terminology
shell_integration/MacOSX/NextcloudIntegration/FileProviderUIExt/Authentication/	Adds authentication modal UI components
shell_integration/MacOSX/NextcloudIntegration/FileProviderExt/FileProviderDomainDefaults.swift	Replaces config system with domain-specific defaults

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[github-actions]

Artifact containing the AppImage: nextcloud-appimage-pr-8726.zip

Digest: sha256:a15e5afe429cd151e56f1a727286d0b9bc666d6ce400a17dcbc75865f473aabe

To test this change/fix you can download the above artifact file, unzip it, and run it.

Please make sure to quit your existing Nextcloud app and backup your data.

[sonarqubecloud]

Quality Gate failed

Failed conditions
0.0% Coverage on New Code (required ≥ 80%)
90 New Code Smells (required ≤ 0)
D Maintainability Rating on New Code (required ≥ A)

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