Add quotation marks in dashboard around arguments with spaces in them

[adamint]

Description

Before:

After:

Fixes #10048

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, included playground resource examples for this
• 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

[Copilot]

Pull Request Overview

This PR ensures that dashboard launch arguments containing spaces are displayed with surrounding quotation marks, improving readability. It also removes a duplicate using directive and adds playground examples to cover single and multiple argument scenarios.

• Wrapped arguments with spaces in quotes in the Razor component
• Removed redundant @using in SourceColumnDisplay.razor
• Added playground executables to test argument quoting behavior

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
src/Aspire.Dashboard/Components/ResourcesGridColumns/SourceColumnDisplay.razor	Remove duplicate @using and add conditional logic to quote values with spaces
playground/Stress/Stress.AppHost/Program.cs	Add example executables for testing arguments with and without spaces

Comments suppressed due to low confidence (1)

src/Aspire.Dashboard/Components/ResourcesGridColumns/SourceColumnDisplay.razor:23

• Consider adding unit tests to verify that arguments with spaces are correctly wrapped in quotes and that single-word arguments remain unquoted.

                    if (launchArgument.Value.Contains(' '))

[Copilot]

[nitpick] The nested if-else duplicates the <span> markup; consider extracting the display value into a variable (e.g., displayValue) and rendering a single <span> for cleaner, DRY code.

[JamesNK]

I don't think a space turns into a non-breaking space. Double check before/after that args are still properly spaced.

Suggested change

	<span class="subtext">@FormatValue(launchArgument.Value)</span>
	static string FormatValue(string value)
	{
	return " " + (value.Contains(' ') ? $"\"{value}\"" : value);
	<span class="subtext">&nbsp;@FormatValue(launchArgument.Value)</span>
	static string FormatValue(string value)
	{
	return (value.Contains(' ') ? $"\"{value}\"" : value);