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/is-arrayish/README.md

@@ -0,0 +1,16 @@
+# node-is-arrayish [![Travis-CI.org Build Status](https://img.shields.io/travis/Qix-/node-is-arrayish.svg?style=flat-square)](https://travis-ci.org/Qix-/node-is-arrayish) [![Coveralls.io Coverage Rating](https://img.shields.io/coveralls/Qix-/node-is-arrayish.svg?style=flat-square)](https://coveralls.io/r/Qix-/node-is-arrayish)
+> Determines if an object can be used like an Array
+
+## Example
+```javascript
+var isArrayish = require('is-arrayish');
+
+isArrayish([]); // true
+isArrayish({__proto__: []}); // true
+isArrayish({}); // false
+isArrayish({length:10}); // false
+```
+
+## License
+Licensed under the [MIT License](http://opensource.org/licenses/MIT).
+You can find a copy of it in [LICENSE](LICENSE).