chore: upgrade BMAD framework to skill-based architecture

Migrates from slash-command files (.claude/commands, .cursor/commands)
to the new skill-based architecture with workflow step files.

_bmad/bmm/workflows/2-plan-workflows/create-prd/steps-v/step-v-01-discovery.md

@@ -4,8 +4,6 @@ description: 'Document Discovery & Confirmation - Handle fresh context validatio
 
 # File references (ONLY variables used in this step)
 nextStepFile: './step-v-02-format-detection.md'
-advancedElicitationTask: '{project-root}/_bmad/core/workflows/advanced-elicitation/workflow.xml'
-partyModeWorkflow: '{project-root}/_bmad/core/workflows/party-mode/workflow.md'
 prdPurpose: '../data/prd-purpose.md'
 ---
 
@@ -195,8 +193,8 @@ Display: **Select an Option:** [A] Advanced Elicitation [P] Party Mode [C] Conti
 
 #### Menu Handling Logic:
 
-- IF A: Read fully and follow: {advancedElicitationTask}, and when finished redisplay the menu
-- IF P: Read fully and follow: {partyModeWorkflow}, and when finished redisplay the menu
+- IF A: Invoke the `bmad-advanced-elicitation` skill, and when finished redisplay the menu
+- IF P: Invoke the `bmad-party-mode` skill, and when finished redisplay the menu
 - IF C: Read fully and follow: {nextStepFile} to begin format detection
 - IF user provides additional document: Load it, update report, redisplay summary
 - IF Any other: help user, then redisplay menu

_bmad/bmm/workflows/2-plan-workflows/create-prd/steps-v/step-v-10-smart-validation.md

@@ -6,7 +6,6 @@ description: 'SMART Requirements Validation - Validate Functional Requirements m
 nextStepFile: './step-v-11-holistic-quality-validation.md'
 prdFile: '{prd_file_path}'
 validationReportPath: '{validation_report_path}'
-advancedElicitationTask: '{project-root}/_bmad/core/workflows/advanced-elicitation/workflow.xml'
 ---
 
 # Step 10: SMART Requirements Validation
@@ -24,6 +23,7 @@ Validate Functional Requirements meet SMART quality criteria (Specific, Measurab
 - 🔄 CRITICAL: When loading next step with 'C', ensure entire file is read
 - 📋 YOU ARE A FACILITATOR, not a content generator
 - ✅ YOU MUST ALWAYS SPEAK OUTPUT In your Agent communication style with the config `{communication_language}`
+- ✅ YOU MUST ALWAYS WRITE all artifact and document content in `{document_output_language}`
 
 ### Role Reinforcement:
 

_bmad/bmm/workflows/2-plan-workflows/create-prd/steps-v/step-v-11-holistic-quality-validation.md

@@ -6,7 +6,6 @@ description: 'Holistic Quality Assessment - Assess PRD as cohesive, compelling d
 nextStepFile: './step-v-12-completeness-validation.md'
 prdFile: '{prd_file_path}'
 validationReportPath: '{validation_report_path}'
-advancedElicitationTask: '{project-root}/_bmad/core/workflows/advanced-elicitation/workflow.xml'
 ---
 
 # Step 11: Holistic Quality Assessment
@@ -24,6 +23,7 @@ Assess the PRD as a cohesive, compelling document - evaluating document flow, du
 - 🔄 CRITICAL: When loading next step with 'C', ensure entire file is read
 - 📋 YOU ARE A FACILITATOR, not a content generator
 - ✅ YOU MUST ALWAYS SPEAK OUTPUT In your Agent communication style with the config `{communication_language}`
+- ✅ YOU MUST ALWAYS WRITE all artifact and document content in `{document_output_language}`
 
 ### Role Reinforcement:
 
@@ -66,8 +66,8 @@ Assess the PRD as a cohesive, compelling document - evaluating document flow, du
 
 "Perform holistic quality assessment on this PRD using multi-perspective evaluation:
 
-**Read fully and follow the Advanced Elicitation workflow:**
-{advancedElicitationTask}
+**Advanced Elicitation workflow:**
+Invoke the `bmad-advanced-elicitation` skill
 
 **Evaluate the PRD from these perspectives:**
 

_bmad/bmm/workflows/2-plan-workflows/create-prd/steps-v/step-v-13-report-complete.md

@@ -22,6 +22,7 @@ Finalize validation report, summarize all findings from steps 1-12, present summ
 - 🔄 CRITICAL: When loading next step with 'C', ensure entire file is read
 - 📋 YOU ARE A FACILITATOR, not a content generator
 - ✅ YOU MUST ALWAYS SPEAK OUTPUT In your Agent communication style with the config `{communication_language}`
+- ✅ YOU MUST ALWAYS WRITE all artifact and document content in `{document_output_language}`
 
 ### Role Reinforcement:
 
@@ -181,7 +182,7 @@ Display:
 - **IF E (Use Edit Workflow):**
   - Explain: "The Edit workflow (steps-e/) can use this validation report to systematically address issues. Edit mode will guide you through discovering what to edit, reviewing the PRD, and applying targeted improvements."
   - Offer: "Would you like to launch Edit mode now? It will help you fix validation findings systematically."
-  - If yes: Read fully and follow: steps-e/step-e-01-discovery.md
+  - If yes: Read fully and follow: `./steps-e/step-e-01-discovery.md`
   - If no: Return to menu
 
 - **IF F (Fix Simpler Items):**
@@ -197,7 +198,7 @@ Display:
 - **IF X (Exit):**
   - Display: "**Validation Report Saved:** {validationReportPath}"
   - Display: "**Summary:** {overall status} - {recommendation}"
-  - PRD Validation complete. Read fully and follow: `{project-root}/_bmad/core/tasks/help.md`
+  - PRD Validation complete. Invoke the `bmad-help` skill.
 
 - **IF Any other:** Help user, then redisplay menu