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/epic-tech-context/template.md

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+# Epic Technical Specification: {{epic_title}}
+
+Date: {{date}}
+Author: {{user_name}}
+Epic ID: {{epic_id}}
+Status: Draft
+
+---
+
+## Overview
+
+{{overview}}
+
+## Objectives and Scope
+
+{{objectives_scope}}
+
+## System Architecture Alignment
+
+{{system_arch_alignment}}
+
+## Detailed Design
+
+### Services and Modules
+
+{{services_modules}}
+
+### Data Models and Contracts
+
+{{data_models}}
+
+### APIs and Interfaces
+
+{{apis_interfaces}}
+
+### Workflows and Sequencing
+
+{{workflows_sequencing}}
+
+## Non-Functional Requirements
+
+### Performance
+
+{{nfr_performance}}
+
+### Security
+
+{{nfr_security}}
+
+### Reliability/Availability
+
+{{nfr_reliability}}
+
+### Observability
+
+{{nfr_observability}}
+
+## Dependencies and Integrations
+
+{{dependencies_integrations}}
+
+## Acceptance Criteria (Authoritative)
+
+{{acceptance_criteria}}
+
+## Traceability Mapping
+
+{{traceability_mapping}}
+
+## Risks, Assumptions, Open Questions
+
+{{risks_assumptions_questions}}
+
+## Test Strategy Summary
+
+{{test_strategy}}