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/select-next-arc.md

@@ -0,0 +1,27 @@
+# /select-next-arc Task
+
+When this command is used, execute the following task:
+
+<!-- Powered by BMAD™ Core -->
+
+# ------------------------------------------------------------
+
+# 12. Select Next Arc (Serial)
+
+# ------------------------------------------------------------
+
+---
+
+task:
+id: select-next-arc
+name: Select Next Arc
+description: Choose the next 2–4‑chapter arc for serial publication.
+persona_default: plot-architect
+inputs:
+
+- retrospective data (retro.md) | snowflake-outline.md
+  steps:
+- Analyze reader feedback.
+- Update release-plan.md with upcoming beats.
+  output: release-plan.md
+  ...