Fix PowerShell syntax error in concepts.md code example

[Copilot]

Summary

Fixed PowerShell syntax error in documentation code example where line continuation was missing.

Motivation

The PowerShell code example in docs/about/concepts.md had a syntax error: the -DesiredState parameter appeared on a new line without proper line continuation, making the example invalid PowerShell code.

Type of Change

• Bug fix
• New feature
• Breaking change
• Documentation update
• Refactoring / internal improvement

Changes

• Added backtick () line continuation character before -DesiredState` parameter in code example

Before:

$Request = New-IdleLifecycleRequest -LifecycleEvent 'Joiner' -IdentityKeys @{
    key = 'first.last'
}
-DesiredState @{  # ❌ Syntax error - parameter on new line without continuation
    Firstname = 'First'
}

After:

$Request = New-IdleLifecycleRequest -LifecycleEvent 'Joiner' -IdentityKeys @{
    key = 'first.last'
} `
-DesiredState @{  # ✓ Valid - backtick continues the command
    Firstname = 'First'
}

Testing

• Manual testing
• Unit tests
• Contract tests

How to test & review

Verify the PowerShell syntax is now valid by checking that the backtick appears at the end of line 74 in docs/about/concepts.md.

Checklist

• Code follows STYLEGUIDE.md
• Tests added or updated (N/A - documentation fix)
• Documentation updated
• No UI/auth logic added to IdLE.Core
• No breaking changes without discussion

Related Issues

Addresses feedback from PR #128.

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