Execute Azure deployments for prepared applications with built-in error recovery and validation.

• Requires .azure/plan.md with Validated status from azure-validate and azure-prepare skills; will not proceed without both prerequisites
• Executes azd up, azd deploy, terraform apply, and az deployment commands with error handling and post-deployment verification
• Includes pre-deploy checklist, recipe-based deployment workflows, and post-deploy configuration for SQL managed identity and Entity Framework migrations
• Supports applications with API Management gateway infrastructure created during preparation phase