chore(agent): configure AI agents and tools

Add configuration for BMad, Claude, OpenCode, and other AI agent tools and workflows.

.claude/commands/bmad-cw/tasks/create-draft-section.md

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+# /create-draft-section Task
+
+When this command is used, execute the following task:
+
+<!-- Powered by BMAD™ Core -->
+
+# ------------------------------------------------------------
+
+# 4. Create Draft Section (Chapter)
+
+# ------------------------------------------------------------
+
+---
+
+task:
+id: create-draft-section
+name: Create Draft Section
+description: Draft a complete chapter or scene using the chapter-draft-tmpl.
+persona_default: editor
+inputs:
+
+- story-outline.md | snowflake-outline.md | scene-list.md | release-plan.md
+  parameters:
+  chapter_number: integer
+  steps:
+- Extract scene beats for the chapter.
+- Draft chapter using template placeholders.
+- Highlight dialogue blocks for later polishing.
+  output: chapter-{{chapter_number}}-draft.md
+  ...