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/docs/codex-instructions.md

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+# BMAD Method - Codex Instructions
+
+## Activating Agents
+
+BMAD agents, tasks and workflows are installed as custom prompts in
+`$CODEX_HOME/prompts/bmad-*.md` files. If `CODEX_HOME` is not set, it
+defaults to `$HOME/.codex/`.
+
+### Examples
+
+```
+/bmad-bmm-agents-dev - Activate development agent
+/bmad-bmm-agents-architect - Activate architect agent
+/bmad-bmm-workflows-dev-story - Execute dev-story workflow
+```
+
+### Notes
+
+Prompts are autocompleted when you type /
+Agent remains active for the conversation
+Start a new conversation to switch agents

.bmad/docs/cursor-instructions.md

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+# BMAD Method - Cursor Instructions
+
+## Activating Agents
+
+BMAD agents are installed in `.cursor/rules/bmad/` as MDC rules.
+
+### How to Use
+
+1. **Reference in Chat**: Use `@.bmad/{module}/agents/{agent-name}`
+2. **Include Entire Module**: Use `@.bmad/{module}`
+3. **Reference Index**: Use `@.bmad/index` for all available agents
+
+### Examples
+
+```
+@.bmad/core/agents/dev - Activate dev agent
+@.bmad/bmm/agents/architect - Activate architect agent
+@.bmad/core - Include all core agents/tasks
+```
+
+### Notes
+
+- Rules are Manual type - only loaded when explicitly referenced
+- No automatic context pollution
+- Can combine multiple agents: `@.bmad/core/agents/dev @.bmad/core/agents/test`

.bmad/docs/roo-instructions.md

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+# BMAD Method - Roo Code Instructions
+
+## Activating Agents
+
+BMAD agents are installed as custom modes in `.roomodes`.
+
+### How to Use
+
+1. **Open Project**: Modes auto-load when project opens
+2. **Select Mode**: Use mode selector in Roo interface
+3. **Choose Agent**: Pick `bmad-{module}-{agent}` mode
+4. **Activate**: Mode is now active with configured permissions
+
+### Permission Levels
+
+Modes are configured with file edit permissions:
+
+- Development files only
+- Configuration files only
+- Documentation files only
+- All files (if configured)
+
+### Notes
+
+- Modes persist until changed
+- Each mode has specific file access rights
+- Icon shows in mode selector for easy identification