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-generator-fn/readme.md

@@ -0,0 +1,33 @@
+# is-generator-fn [![Build Status](https://travis-ci.org/sindresorhus/is-generator-fn.svg?branch=master)](https://travis-ci.org/sindresorhus/is-generator-fn)
+
+> Check if something is a [generator function](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/function*)
+
+
+## Install
+
+```
+$ npm install is-generator-fn
+```
+
+
+## Usage
+
+```js
+const isGeneratorFn = require('is-generator-fn');
+
+isGeneratorFn(function * () {});
+//=> true
+
+isGeneratorFn(function () {});
+//=> false
+```
+
+
+## Related
+
+- [is](https://github.com/sindresorhus/is) - Type check values
+
+
+## License
+
+MIT © [Sindre Sorhus](https://sindresorhus.com)