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/istanbul-reports/README.md

@@ -0,0 +1,12 @@
+# istanbul-reports
+
+[![Build Status](https://travis-ci.org/istanbuljs/istanbul-reports.svg?branch=main)](https://travis-ci.org/istanbuljs/istanbul-reports)
+
+-   node.getRelativeName
+
+-   context.getSource(filePath)
+-   context.classForPercent(type, percent)
+-   context.console.colorize(str, class)
+-   context.writer
+-   context.console.write
+-   context.console.println