Remove serverReadyAction for apphost, manually open the dashboard URL using vs code APIs

[adamint]

Description

We already have access to the proper dashboard login URL later in the apphost startup process, when the CLI tells the extension that it has dashboard URLs available.

Instead of setting a serverReadyAction for the apphost, we can use VS Code's openExternal API to open the dashboard URL we get from the CLI (which already includes the token) in the user's browser.

Checklist

• Is this feature complete?
  • Yes. Ready to ship.
  • No. Follow-up changes expected.
• Are you including unit tests for the changes and scenario tests if relevant?
  • Yes
  • No
• Did you add public API?
  • Yes
    • If yes, did you have an API Review for it?
      • Yes
      • No
    • Did you add <remarks /> and <code /> elements on your triple slash comments?
      • Yes
      • No
  • No
• Does the change make any security assumptions or guarantees?
  • Yes
    • If yes, have you done a threat model and had a security review?
      • Yes
      • No
  • No
• Does the change require an update in our Aspire docs?
  • Yes
    • Link to aspire-docs issue (consider using one of the following templates):
      • New (or update) doc-idea template
      • New breaking-change template
      • New diagnostic template
  • 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 -- 12907

Or

• Run remotely in PowerShell:

iex "& { $(irm https://raw.githubusercontent.com/dotnet/aspire/main/eng/scripts/get-aspire-cli-pr.ps1) } 12907"

[Copilot]

Pull Request Overview

This PR refactors how the Aspire dashboard is opened when debugging an apphost. Instead of using VS Code's serverReadyAction mechanism (which would open the dashboard URL without the login token), the extension now manually opens the dashboard URL (which includes the login token) using VS Code's openExternal API after receiving the dashboard URLs from the CLI.

Key Changes:

• Removed serverReadyAction setup for apphost debugging sessions
• Added manual browser opening logic that uses the dashboard URL with login token
• Properly handles Codespaces URL preference when available

Reviewed Changes

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

File	Description
extension/src/debugger/languages/dotnet.ts	Modified to skip serverReadyAction setup for apphost projects by inverting the conditional logic
extension/src/server/interactionService.ts	Added logic to automatically open the dashboard URL with login token when auto-launch is enabled

[adamint]

to test: create new starter project, run using aspire debugger