chore: update project state and prepare for image support development

- Add comprehensive image test document with various image types
- Update project structure with development artifacts
- Prepare foundation for image support enhancement phase
- Include test files for validating image editing workflows

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

node_modules/human-signals/CHANGELOG.md

@@ -0,0 +1,11 @@
+# 2.1.0
+
+## TypeScript types
+
+- Add [TypeScript definitions](src/main.d.ts)
+
+# 2.0.0
+
+## Breaking changes
+
+- Minimal supported Node.js version is now `10.17.0`