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/4-implementation/create-story/template.md

@@ -0,0 +1,51 @@
+# Story {{epic_num}}.{{story_num}}: {{story_title}}
+
+Status: drafted
+
+## Story
+
+As a {{role}},
+I want {{action}},
+so that {{benefit}}.
+
+## Acceptance Criteria
+
+1. [Add acceptance criteria from epics/PRD]
+
+## Tasks / Subtasks
+
+- [ ] Task 1 (AC: #)
+  - [ ] Subtask 1.1
+- [ ] Task 2 (AC: #)
+  - [ ] Subtask 2.1
+
+## Dev Notes
+
+- Relevant architecture patterns and constraints
+- Source tree components to touch
+- Testing standards summary
+
+### Project Structure Notes
+
+- Alignment with unified project structure (paths, modules, naming)
+- Detected conflicts or variances (with rationale)
+
+### References
+
+- Cite all technical details with source paths and sections, e.g. [Source: docs/<file>.md#Section]
+
+## Dev Agent Record
+
+### Context Reference
+
+<!-- Path(s) to story context XML will be added here by context workflow -->
+
+### Agent Model Used
+
+{{agent_model_name_version}}
+
+### Debug Log References
+
+### Completion Notes List
+
+### File List