fix(web): warn before silent Windows updates

[nateEc]

Closes #4328

Summary

• warn Windows users that T3 Code can remain closed for several minutes during a silent update
• explain that no installer window may appear and that T3 Code will reopen automatically
• use the same confirmation copy across the legacy sidebar, sidebar update pill, and About settings entry points

Verification

• vp test run apps/web/src/components/desktopUpdate.logic.test.ts (26 passed)
• vp run --filter @t3tools/web typecheck
• targeted lint for the changed files (one pre-existing array-index-key warning)
• test-t3-app: paired an isolated environment, launched the app, and opened the Settings panel successfully

The platform-specific copy is covered with explicit Win32 and MacIntel cases because the isolated web runner is not an Electron/Windows host.

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Note

Low Risk
Copy-only change to install confirmation strings with platform gating; no updater or install logic modified.

Overview
Windows users see extra copy in the desktop install update confirmation dialog explaining that T3 Code may stay closed for several minutes during a silent install, that no installer window may appear, and that the app will reopen when finished.

getDesktopUpdateInstallConfirmationMessage gains an optional platform argument (default empty) and uses isWindowsPlatform to append that paragraph only on Windows. Sidebar, SidebarUpdatePill, and About settings now pass navigator.platform so all install paths share the same message.

Unit tests cover Win32 (warning present) vs MacIntel (warning absent).

^{Reviewed by Cursor Bugbot for commit 4ffba05. Bugbot is set up for automated code reviews on this repo. Configure here.}

Note

Warn Windows users before silent desktop updates in confirmation dialogs

Adds a Windows-specific warning to the update installation confirmation dialog shown in the sidebar and settings. getDesktopUpdateInstallConfirmationMessage in desktopUpdate.logic.ts now accepts an optional platform parameter and appends the warning when isWindowsPlatform(platform) is true. Callers in Sidebar.tsx, SidebarUpdatePill.tsx, and SettingsPanels.tsx pass navigator.platform as the second argument.

^{Macroscope summarized 4ffba05.}

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[macroscopeapp]

Approvability

Verdict: Approved

This PR adds Windows-specific warning copy to the update confirmation dialog, informing users that silent updates may take several minutes. The change is purely informational text with no impact on update behavior. Unit tests cover the new functionality.

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[inayayousfi]

Do you think you could add the same to the installation part? and also for switching between branch tracking?