Remove test-markdown.json and update .gitignore

.gitignore

@@ -1,4 +1,6 @@
 .DS_Store
 node_modules
+rendered.html
+test-markdown.json
 
 **/.claude/settings.local.json

test-markdown.json

@@ -1,5 +0,0 @@
-{
-  "text": "# Test Rendering\n\n\![](https://github.githubassets.com/images/modules/logos_page/GitHub-Mark.png)\n\nThe image above has no alt text but should still render.",
-  "mode": "gfm",
-  "context": "anthropics/claude-code-action"
-}