Ask for confirmation before uninstalling packages

[Maxime Landry (mlandry-devolutions)]

• I have read the contributing guidelines, and I agree with the Code of Conduct.
• Have you checked that there aren't other open pull requests for the same changes?
• Have you tested that the committed code can be executed without errors?
• Have you confirmed that this issue is caused by UniGetUI itself, and not by the package manager or the package involved?

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UninstallConfirmationDialog already exists (translated, with the package list), but only the Software Catalog called it: every other uninstall started right away. On the Updates page every row is checked by default, so a single click on "Uninstall selected packages" uninstalled every package with an update.

• Installed page: the toolbar button and its as-admin / interactive variants, the context menu (Uninstall, as admin, interactive, remove data), Ctrl+Enter, double-click and the uninstall options dialog now go through ConfirmAndLaunchUninstall.
• Updates page: "Uninstall selected packages" and the context menu confirm in LaunchUninstallFromUpdates.
• Package details: the Uninstall button and its variants confirm on top of the details dialog (the main window stacks immersive dialogs), and the dialog stays open on No. This covers every caller, Installed page and catalog included.
• No double prompt: the confirmation lives in the entry points, not in LaunchUninstall, because the catalog confirms before calling it.

No new string. Left as is: "Uninstall then reinstall" (reinstalls right after), repeating an operation from the history, and the IPC API.

Tested on macOS: Installed and Updates pages, context menu, package details and its variants; No cancels everywhere and nothing is uninstalled.

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Relates to UNI-37

🤖 Generated with Claude Code

[Copilot]

🟢 Approval recommended

Static review found no blocking issues in confirmation routing, cancellation handling, or existing caller integration.

0 open findings

What changed in this PR

Adds confirmation before uninstalling packages through the desktop UI, reusing the existing translated confirmation dialog.

Changes:

• Routes Installed and Updates page uninstall actions through confirmation.
• Confirms package-details uninstall actions while keeping details open when declined.
• Preserves catalog confirmation without adding duplicate prompts.

File	Description
src/​UniGetUI.Avalonia/​Views/​SoftwarePages/​SoftwareUpdatesPage.cs	Confirms selected packages before uninstalling.
src/​UniGetUI.Avalonia/​Views/​SoftwarePages/​InstalledPackagesPage.cs	Adds shared confirmation routing for uninstall entry points.
src/​UniGetUI.Avalonia/​Views/​DialogPages/​PackageDetailsWindow.axaml.cs	Confirms primary and variant uninstall actions.

🧠 Review effort: Balanced

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