Add mandatory update gate with installer handoff and app shutdown

[Copilot]

• Inspect ApplicationUpdateLauncherService build errors
• Run existing focused validation before changes
• Resolve ambiguous Android/MAUI type references in ApplicationUpdateLauncherService
• Re-run focused validation after the fix
• Run code review and security scan, then address any findings

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Automatic Application Updating for Andorid and Windows</issue_title>
<issue_description>I want a facility within my application that will check a configured endpoint for application updates (might be a version number in the POST) and a response to say update is required/not required.

This process must if told an application update is available must download the application (might be different flow for Android/Windows) and install the application on the device.

Is this something that is achievable without going through the Play Store/Windows store or a paid service. </issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Automatic Application Updating for Andorid and Windows #481

---

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[codacy-production]

Not up to standards ⛔

🔴 Issues 2 medium

Alerts:
⚠ 2 issues (≤ 0 issues of at least medium severity)

Results:
2 new issues

Category	Results
BestPractice	2 medium

View in Codacy

🟢 Metrics 47 complexity · 0 duplication

Metric	Results
Complexity	47
Duplication	0

View in Codacy

_{TIP This summary will be updated as you push new changes. Give us feedback}

[StuartFerguson]

@copilot can you look at resolving the codacy issues

[Copilot]

@copilot can you look at resolving the codacy issues

Addressed the Codacy-style issues in the update flow in cdd6302. The follow-up tightens URI validation, disposes update-check HTTP objects correctly, and refines the Android installer intent handling by API level.

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[StuartFerguson]

@copilot unit tests still have a failure and codacy as well :|

[Copilot]

@copilot unit tests still have a failure and codacy as well :|

Addressed in 03dfa0f with a small follow-up in 502f07e. The update-related login tests now await the async relay command instead of verifying immediately after Execute, and I also refactored the update helpers to reduce the Codacy findings. Fresh checks are running on the branch now.

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I tried to connect to the following addresses, but was blocked by firewall rules:

• app.codacy.com
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[StuartFerguson]

@copilot the LoginPageViewModel_LoginCommand_Execute_UpdateRequired_UpdateLauncherIsCalled_And_AppQuits test is still failing with

Message: 
System.NullReferenceException : Object reference not set to an instance of an object.

Stack Trace: 
LoginPageViewModel.GetUserToken() line 105
LoginPageViewModel.Logon() line 265
LoginPageViewModelTests.LoginPageViewModel_LoginCommand_Execute_UpdateRequired_UpdateLauncherIsCalled_And_AppQuits() line 182
--- End of stack trace from previous location ---

[Copilot]

@copilot the LoginPageViewModel_LoginCommand_Execute_UpdateRequired_UpdateLauncherIsCalled_And_AppQuits test is still failing with

Message: 
...

Fixed in db278c2 with a small style follow-up in ae1ead5. The mandatory-update path was launching the installer and then falling through into the normal login flow, so GetUserToken() still ran. CheckForUpdates() now returns a continue/stop flag, and Logon() exits immediately after a required update is launched. I also re-ran the targeted test locally with --no-restore after the fix.

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• f.feedz.io
  • Triggering command: /opt/hostedtoolcache/CodeQL/2.25.1/x64/codeql/csharp/tools/linux64/Semmle.Autobuild.CSharp /opt/hostedtoolcache/CodeQL/2.25.1/x64/codeql/csharp/tools/linux64/Semmle.Autobuild.CSharp (dns block)

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