Missing validate-workflow.xml referenced in create-story checklist

[adahan]

Description
The file _bmad/bmm/workflows/4-implementation/create-story/checklist.md references a validation framework file that does not exist in the repository.

Affected File
_bmad/bmm/workflows/4-implementation/create-story/checklist.md

Missing Reference
The checklist references {project-root}/_bmad/core/tasks/validate-workflow.xml in multiple locations:

Line 36: The {project-root}/_bmad/core/tasks/validate-workflow.xml framework will automatically:
Line 66: Load validation framework: {project-root}/_bmad/core/tasks/validate-workflow.xml``
Expected Behavior

Either:

The _bmad/core/tasks/validate-workflow.xml file should exist, or
The references should be updated to point to the correct file/mechanism, or
The references should be removed if the validation framework is not yet implemented

Version
v6 beta 4