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/bmb/workflows/workflow/data/csv-data-file-standards.md

@@ -1,53 +0,0 @@
-# CSV Data File Standards
-
-## When to Use CSV
-
-Use for:
-- Domain-specific data not in training data
-- Too large for prompt context
-- Structured lookup/reference needs
-- Cross-session consistency required
-
-**Don't use for:** Web-searchable info, common syntax, general knowledge, LLM-generatable content
-
-## CSV Structure
-
-```csv
-category,name,pattern,description
-"collaboration","Think Aloud Protocol","user speaks thoughts → facilitator captures","Make thinking visible during work"
-```
-
-**Rules:**
-- Header row required, descriptive column names
-- Consistent data types per column
-- UTF-8 encoding
-- All columns must be used in workflow
-
-## Common Use Cases
-
-### Method Registry
-```csv
-category,name,pattern
-collaboration,Think Aloud,user speaks thoughts → facilitator captures
-advanced,Six Thinking Hats,view problem from 6 perspectives
-```
-
-### Knowledge Base Index
-```csv
-keywords,document_path,section
-"nutrition,macros",data/nutrition-reference.md,## Daily Targets
-```
-
-### Configuration Lookup
-```csv
-scenario,required_steps,output_sections
-"2D Platformer",step-01,step-03,step-07,movement,physics,collision
-```
-
-## Best Practices
-
-- Keep files small (<1MB preferred)
-- No unused columns
-- Use efficient encoding (codes vs full descriptions)
-- Document purpose
-- Validate data quality