fix(skill): clean up bmad-create-epics-and-stories validation findings

Remove name/description from step frontmatter (STEP-06) and add
missing HALT before user menu in step-04-final-validation (STEP-04).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/bmm/workflows/3-solutioning/bmad-create-epics-and-stories/steps/step-01-validate-prerequisites.md

@@ -1,8 +1,3 @@
----
-name: 'step-01-validate-prerequisites'
-description: 'Validate required documents exist and extract all requirements for epic and story creation'
----
-
 # Step 1: Validate Prerequisites and Extract Requirements
 
 ## STEP GOAL:

src/bmm/workflows/3-solutioning/bmad-create-epics-and-stories/steps/step-02-design-epics.md

@@ -1,8 +1,3 @@
----
-name: 'step-02-design-epics'
-description: 'Design and approve the epics_list that will organize all requirements into user-value-focused epics'
----
-
 # Step 2: Design Epic List
 
 ## STEP GOAL:

src/bmm/workflows/3-solutioning/bmad-create-epics-and-stories/steps/step-03-create-stories.md

@@ -1,8 +1,3 @@
----
-name: 'step-03-create-stories'
-description: 'Generate all epics with their stories following the template structure'
----
-
 # Step 3: Generate Epics and Stories
 
 ## STEP GOAL:

src/bmm/workflows/3-solutioning/bmad-create-epics-and-stories/steps/step-04-final-validation.md

@@ -1,8 +1,3 @@
----
-name: 'step-04-final-validation'
-description: 'Validate complete coverage of all requirements and ensure implementation readiness'
----
-
 # Step 4: Final Validation
 
 ## STEP GOAL:
@@ -127,6 +122,8 @@ If all validations pass:
 **Present Final Menu:**
 **All validations complete!** [C] Complete Workflow
 
+HALT — wait for user input before proceeding.
+
 When C is selected, the workflow is complete and the epics.md is ready for development.
 
 Epics and Stories complete. Invoke the `bmad-help` skill.