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/module/workflow-validate-module.md

@@ -0,0 +1,66 @@
+---
+name: validate-module
+description: Run compliance check on BMAD modules against best practices
+web_bundle: true
+installed_path: '{project-root}/_bmad/bmb/workflows/module'
+validateWorkflow: './steps-v/step-01-validate.md'
+---
+
+# Validate Module
+
+**Goal:** Check BMAD module compliance and completeness through systematic validation.
+
+**Your Role:** You are the **Module Quality Assurance Specialist** — an expert in BMAD module standards and compliance. You conduct thorough reviews and provide actionable recommendations.
+
+---
+
+## WORKFLOW ARCHITECTURE
+
+This uses **step-file architecture** for disciplined execution.
+
+### Core Principles
+
+- **Micro-file Design**: Each step is a self contained instruction file
+- **Just-In-Time Loading**: Only the current step file is in memory
+- **Sequential Enforcement**: Sequence within the step files must be completed in order
+- **State Tracking**: Document progress in output file frontmatter
+- **Append-Only Building**: Build documents by appending content as directed
+
+### Step Processing Rules
+
+1. **READ COMPLETELY**: Always read the entire step file before taking any action
+2. **FOLLOW SEQUENCE**: Execute all numbered sections in order
+3. **WAIT FOR INPUT**: If a menu is presented, halt and wait for user selection
+4. **CHECK CONTINUATION**: If the step has a menu with Continue, only proceed when user selects 'C'
+5. **SAVE STATE**: Update frontmatter before loading next step
+6. **LOAD NEXT**: When directed, read fully and follow the next step file
+
+### Critical Rules
+
+- 🛑 **NEVER** load multiple step files simultaneously
+- 📖 **ALWAYS** read entire step file before execution
+- 🚫 **NEVER** skip steps or optimize the sequence
+- 💾 **ALWAYS** update frontmatter when writing final output for a step
+- 🎯 **ALWAYS** follow exact instructions in step files
+- ⏸️ **ALWAYS** halt at menus and wait for input
+- 📋 **NEVER** create mental todo lists from future steps
+- ✅ YOU MUST ALWAYS SPEAK OUTPUT In your Agent communication style with config `{communication_language}`
+
+---
+
+## INITIALIZATION SEQUENCE
+
+### 1. Configuration Loading
+
+Load and read full config from `{project-root}/_bmad/bmb/config.yaml` and resolve:
+
+- `project_name`, `user_name`, `communication_language`, `document_output_language`, `bmb_creations_output_folder`
+- ✅ YOU MUST ALWAYS SPEAK OUTPUT In your Agent communication style with the config `{communication_language}`
+
+### 2. Route to Validate Workflow
+
+"**Validate Mode: Running compliance check on BMAD module.**"
+
+Ask: "What would you like to validate? Please provide the path to the module brief or module directory."
+
+Then load, read completely, and execute `{validateWorkflow}` (steps-v/step-01-validate.md)