Add cc-switch-dev-workflow skill

cc-switch-dev-workflow/agents/openai.yaml

@@ -0,0 +1,4 @@
+interface:
+  display_name: "CC Switch Dev Workflow"
+  short_description: "Run the internal spec-driven multi-agent delivery workflow"
+  default_prompt: "Use $cc-switch-dev-workflow to choose the right playbook, align against my local CC Switch config, and run the 7-stage software delivery workflow."