## CHANGES
- Add warning to stderr when using incompatible models with image generation
- Add GPT-5, GPT-5-nano, and GPT-5.2 to supported image generation models
- Create `checkImageGenerationCompatibility` function in OpenAI plugin
- Add comprehensive tests for image generation compatibility warnings
- Add integration test scenarios for CLI image generation workflows
- Suggest gpt-4o as alternative in incompatibility warning messages
CHANGES
- Integrate notification sending into chat processing workflow
- Add --notification and --notification-command CLI flags and help
- Provide cross-platform providers: macOS, Linux, Windows with fallbacks
- Escape shell metacharacters to prevent injection vulnerabilities
- Truncate Unicode output safely for notification message previews
- Update bash, zsh, fish completions with new notification options
- Add docs and YAML examples for configuration and customization
- Add unit tests for providers and notification integration paths
