Make *.localhost resource endpoint URLs the primary endpoint URL

[DamianEdwards]

Description

Make *.localhost resource endpoint URLs the primary endpoint URL so that callers of WithUrlForEndpoint update that URL instead of the localhost URL that isn't shown on the resources summary page.

Fixes #12465

Checklist

• Is this feature complete?
  • Yes. Ready to ship.
• Are you including unit tests for the changes and scenario tests if relevant?
  • Yes
• Did you add public API?
  • No
• Does the change make any security assumptions or guarantees?
  • No
• Does the change require an update in our Aspire docs?
  • No

[github-actions]

🚀 Dogfood this PR with:

⚠️ WARNING: Do not do this without first carefully reviewing the code of this PR to satisfy yourself it is safe.

curl -fsSL https://raw.githubusercontent.com/dotnet/aspire/main/eng/scripts/get-aspire-cli-pr.sh | bash -s -- 12466

Or

• Run remotely in PowerShell:

iex "& { $(irm https://raw.githubusercontent.com/dotnet/aspire/main/eng/scripts/get-aspire-cli-pr.ps1) } 12466"

[Copilot]

Pull Request Overview

This PR fixes the URL ordering behavior when the dashboard uses a *.dev.localhost address. The change ensures that WithUrlForEndpoint callbacks target the *.dev.localhost URL (which is displayed prominently in the dashboard) rather than the plain localhost URL.

Key changes:

• Swapped URL ordering in ApplicationOrchestrator.cs so the *.dev.localhost URL is added as the primary URL before the localhost URL
• Updated test to verify that WithUrlForEndpoint correctly targets the primary *.dev.localhost URL
• Improved code comments to clarify the intent of URL swapping

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
src/Aspire.Hosting/Orchestrator/ApplicationOrchestrator.cs	Modified URL creation logic to swap primary and additional URLs, ensuring *.dev.localhost URLs are added first and targeted by WithUrlForEndpoint calls
tests/Aspire.Hosting.Tests/WithUrlsTests.cs	Enhanced test to verify WithUrlForEndpoint applies customizations to the primary *.dev.localhost URL; refactored assertions from multiple Assert.Single calls to a single Assert.Collection for better readability

[mitchdenny]

/test-scenario smoke-test-dotnet

[mitchdenny]

/test-scenario smoke-test-python

[github-actions]

🤖 AI Agent Task Created

Scenario: smoke-test-dotnet

An AI agent has been assigned to execute this scenario.

📝 Issue: https://github.com/dotnet/aspire-playground/issues/78

Please navigate to the issue for more details and to track progress.

[github-actions]

🤖 AI Agent Task Created

Scenario: smoke-test-python

An AI agent has been assigned to execute this scenario.

📝 Issue: https://github.com/dotnet/aspire-playground/issues/79

Please navigate to the issue for more details and to track progress.