Fix plan-export.md example to use correct New-IdlePlan syntax

[Copilot]

Summary

Corrected the plan export example to match the actual New-IdlePlan API contract.

Motivation

The example used incorrect syntax: .json workflow extension, non-existent -IdentityId parameter, and omitted the mandatory lifecycle request object creation.

Type of Change

• Documentation update

Changes

• Changed workflow file extension from .json to .psd1
• Added New-IdleLifecycleRequest call to create proper request object
• Updated New-IdlePlan to use mandatory -Request parameter

Before

$plan = New-IdlePlan -WorkflowPath './workflows/joiner.json' -IdentityId 'jdoe'

After

$request = New-IdleLifecycleRequest -LifecycleEvent 'Joiner' -IdentityKeys @{ EmployeeId = 'jdoe' }
$plan = New-IdlePlan -WorkflowPath './workflows/joiner.psd1' -Request $request

Testing

• Manual testing

How to test & review

Verify the example now matches:

• New-IdlePlan cmdlet reference at docs/reference/cmdlets/New-IdlePlan.md
• Patterns in examples/Invoke-IdleDemo.ps1 (line 268-269)

Checklist

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

Related Issues

Addresses feedback from #121 (review comment 2738687275)

---

💬 We'd love your input! Share your thoughts on Copilot coding agent in our 2 minute survey.

[chatgpt-codex-connector]

You have reached your Codex usage limits for code reviews. You can see your limits in the Codex usage dashboard.