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/bmm/config.yaml

@@ -0,0 +1,16 @@
+# BMM Module Configuration
+# Generated by BMAD installer
+# Version: 6.0.0-Beta.8
+# Date: 2026-02-12T20:59:55.871Z
+
+project_name: Entropyk
+user_skill_level: intermediate
+planning_artifacts: "{project-root}/_bmad-output/planning-artifacts"
+implementation_artifacts: "{project-root}/_bmad-output/implementation-artifacts"
+project_knowledge: "{project-root}/docs"
+
+# Core Configuration Values
+user_name: Sepehr
+communication_language: French
+document_output_language: English
+output_folder: "{project-root}/_bmad-output"