[WIP] Fix type recognition for rolldown package in REPL

[Copilot]

Plan to Fix Type Recognition Issue

• Explore repository structure and understand the issue
• Locate monaco-editor-auto-typings configuration in CodeEditor.vue
• Understand the JsDelivrSourceResolver implementation
• Identify the root cause (fileRootPath or package detection issue)
• Test the current behavior to understand what's not working
• Implement fix to properly fetch types from jsdelivr
• Verify types are loaded and recognized in the editor
• Test with rolldown package specifically
• Run linting and type checking
• Take screenshots to verify the fix works

Original prompt

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This section details on the original issue you should resolve

<issue_title>bug: does not recognize types rolldown</issue_title>
<issue_description>When using the repl, types from the rolldown package are not recognized.
Default setup, tested in both Firefox and Chrome

As a user, I'd expect to have type safety in the REPL for config options</issue_description>

<agent_instructions>We already have monaco-editor-auto-typings but it doesn't seem working. The fetch does not seem to be happening. We should fetch from jsdelivr.</agent_instructions>

Comments on the Issue (you are @copilot in this section)

• Fixes bug: does not recognize types rolldown #25

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