feat(bmad): initialize comprehensive BMAD system with agents and configurations

Add complete BMAD method implementation including:
- 20+ specialized agents (dev, qa, pm, architect, etc.)
- 50+ reusable tasks for workflow automation
- IDE-specific configurations for Claude, Cursor, Gemini
- Chat modes and rule definitions for various environments
- Web bundles and team configurations
- Documentation and checklists for BMAD processes

This establishes the full BMAD ecosystem for collaborative development workflows.

.claude/commands/bmad-cw/tasks/build-world.md

@@ -0,0 +1,28 @@
+# /build-world Task
+
+When this command is used, execute the following task:
+
+<!-- Powered by BMAD™ Core -->
+
+# ------------------------------------------------------------
+
+# 2. Build World
+
+# ------------------------------------------------------------
+
+---
+
+task:
+id: build-world
+name: Build World
+description: Create a concise world guide covering geography, cultures, magic/tech, and history.
+persona_default: world-builder
+inputs:
+
+- concept-brief.md
+  steps:
+- Summarize key themes from concept.
+- Draft World Guide using world-guide-tmpl.
+- Execute tasks#advanced-elicitation.
+  output: world-guide.md
+  ...