Initial commit: BMAD framework + Story 1.1 Component Trait Definition

Features:
- BMAD (Build Modular AI-driven Development) framework setup
- BMM, BMB, CIS, Core modules configured
- Story 1.1: Component trait with error handling
- Workspace Cargo.toml with components crate
- 31 tests passing (19 unit + 12 doc tests)

Technical:
- Component trait with compute_residuals, jacobian_entries, n_equations
- ComponentError enum with thiserror
- JacobianBuilder for sparse matrix construction
- Object-safe trait supporting Box<dyn Component>
- Comprehensive documentation and examples

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

@@ -0,0 +1,53 @@
+# 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