chore: add BMAD agent workflows and configuration system

- Add comprehensive agent workflow definitions for 8 specialized roles (analyst, architect, developer, product manager, scrum master, technical writer, UX designer, QA engineer)
- Add 35+ workflow definitions covering analysis, planning, solutioning, and implementation phases
- Add BMAD configuration system with agent, task, tool, workflow, and file manifests
- Add BMM (Business Model Methodology) documentation including quick-start guides, architecture references, and workflow analysis
- Add test architecture knowledge base with 20+ testing patterns and best practices
- Add team configuration templates and party mode setup for collaborative development
- Establish foundation for enterprise agentic development framework with adaptive scaling capabilities

.bmad/bmm/workflows/workflow-status/paths/method-brownfield.yaml

@@ -0,0 +1,110 @@
+# BMad Method - Brownfield
+# Full product + architecture planning for complex brownfield additions (10-50+ stories typically)
+
+method_name: "BMad Method"
+track: "bmad-method"
+field_type: "brownfield"
+description: "Complete product and system design for complex brownfield work"
+
+phases:
+  - prerequisite: true
+    name: "Documentation"
+    conditional: "if_undocumented"
+    note: "NOT a phase - prerequisite for brownfield without docs"
+    workflows:
+      - id: "document-project"
+        required: true
+        agent: "analyst"
+        command: "document-project"
+        output: "Comprehensive project documentation"
+        purpose: "Understand existing codebase before planning"
+
+  - phase: 0
+    name: "Discovery (Optional)"
+    optional: true
+    note: "User-selected during workflow-init"
+    workflows:
+      - id: "brainstorm-project"
+        optional: true
+        agent: "analyst"
+        command: "brainstorm-project"
+        included_by: "user_choice"
+
+      - id: "research"
+        optional: true
+        agent: "analyst"
+        command: "research"
+        included_by: "user_choice"
+
+      - id: "product-brief"
+        optional: true
+        agent: "analyst"
+        command: "product-brief"
+        included_by: "user_choice"
+        note: "Optional for brownfield, less common than greenfield"
+
+  - phase: 1
+    name: "Planning"
+    required: true
+    workflows:
+      - id: "prd"
+        required: true
+        agent: "pm"
+        command: "prd"
+        output: "PRD focused on new features/changes"
+        note: "Must consider existing system constraints"
+
+      - id: "validate-prd"
+        optional: true
+        agent: "pm"
+        command: "validate-prd"
+
+      - id: "create-design"
+        conditional: "if_has_ui"
+        agent: "ux-designer"
+        command: "create-design"
+
+  - phase: 2
+    name: "Solutioning"
+    required: true
+    workflows:
+      - id: "create-architecture"
+        recommended: true
+        agent: "architect"
+        command: "create-architecture"
+        output: "Integration architecture - solution design for THIS project"
+        note: "HIGHLY RECOMMENDED: Distills massive brownfield context into focused solution design. Prevents agent confusion."
+
+      - id: "create-epics-and-stories"
+        required: true
+        agent: "pm"
+        command: "create-epics-and-stories"
+        note: "Required: Break down PRD into implementable epics and stories with full context (PRD + UX + Architecture)"
+
+      - id: "test-design"
+        recommended: true
+        agent: "tea"
+        command: "test-design"
+        output: "System-level testability review"
+        note: "Testability assessment before gate check - auto-detects system-level mode"
+
+      - id: "validate-architecture"
+        optional: true
+        agent: "architect"
+        command: "validate-architecture"
+
+      - id: "implementation-readiness"
+        required: true
+        agent: "architect"
+        command: "implementation-readiness"
+        note: "Validates PRD + UX + Architecture + Epics cohesion before implementation"
+
+  - phase: 3
+    name: "Implementation"
+    required: true
+    workflows:
+      - id: "sprint-planning"
+        required: true
+        agent: "sm"
+        command: "sprint-planning"
+        note: "Creates sprint plan with stories"