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/story-context/context-template.xml

@@ -0,0 +1,34 @@
+<story-context id="{bmad_folder}/bmm/workflows/4-implementation/story-context/template" v="1.0">
+  <metadata>
+    <epicId>{{epic_id}}</epicId>
+    <storyId>{{story_id}}</storyId>
+    <title>{{story_title}}</title>
+    <status>{{story_status}}</status>
+    <generatedAt>{{date}}</generatedAt>
+    <generator>BMAD Story Context Workflow</generator>
+    <sourceStoryPath>{{story_path}}</sourceStoryPath>
+  </metadata>
+
+  <story>
+    <asA>{{as_a}}</asA>
+    <iWant>{{i_want}}</iWant>
+    <soThat>{{so_that}}</soThat>
+    <tasks>{{story_tasks}}</tasks>
+  </story>
+
+  <acceptanceCriteria>{{acceptance_criteria}}</acceptanceCriteria>
+
+  <artifacts>
+    <docs>{{docs_artifacts}}</docs>
+    <code>{{code_artifacts}}</code>
+    <dependencies>{{dependencies_artifacts}}</dependencies>
+  </artifacts>
+
+  <constraints>{{constraints}}</constraints>
+  <interfaces>{{interfaces}}</interfaces>
+  <tests>
+    <standards>{{test_standards}}</standards>
+    <locations>{{test_locations}}</locations>
+    <ideas>{{test_ideas}}</ideas>
+  </tests>
+</story-context>