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/_cfg/agents/bmm-sm.customize.yaml

@@ -0,0 +1,42 @@
+# Agent Customization
+# Customize any section below - all are optional
+# After editing: npx bmad-method build <agent-name>
+
+# Override agent name
+agent:
+  metadata:
+    name: ""
+
+# Replace entire persona (not merged)
+persona:
+  role: ""
+  identity: ""
+  communication_style: ""
+  principles: []
+
+# Add custom critical actions (appended after standard config loading)
+critical_actions: []
+
+# Add persistent memories for the agent
+memories: []
+# Example:
+# memories:
+#   - "User prefers detailed technical explanations"
+#   - "Current project uses React and TypeScript"
+
+# Add custom menu items (appended to base menu)
+# Don't include * prefix or help/exit - auto-injected
+menu: []
+# Example:
+# menu:
+#   - trigger: my-workflow
+#     workflow: "{project-root}/custom/my.yaml"
+#     description: My custom workflow
+
+# Add custom prompts (for action="#id" handlers)
+prompts: []
+# Example:
+# prompts:
+# - id: my-prompt
+#   content: |
+#     Prompt instructions here