Delphine (clean skeleton)

This is a cleaned-up skeleton based on your current codebase.

What was removed

• All references to the Microsoft catScratch / catCustoms sample.
• The huge sample HTML (GrapesJS demo) and commented dead code.
• The repeated panel.webview.html = html assignments.
• Multiple duplicated onDidReceiveMessage handlers.
• Reveal / focus timer storms that were causing Webview is disposed errors.

What you get

• Preview panel (reliable): command Delphine: Open Preview Panel
• Custom editor (optional): viewType delphine.previewEditor with priority: option
  • Use Open With… on an .html file to choose it.

Files / structure

• src/extension.ts — registers commands + custom editor provider
• src/preview/PreviewPanel.ts — webview panel (separate from custom editor)
• src/preview/html.ts — HTML builder + CSP (nonce + webview.cspSource)
• src/editor/DelphineEditorProvider.ts — optional custom editor provider

Notes for your media scripts

The preview HTML expects these files in your extension folder:

• media/boot.js
• media/zaza.compiled.js

If you want to load scripts from somewhere else (workspace folder, generated output, etc.), change the URIs in src/preview/html.ts.

Build

npm install
npm run compile

Then run the extension in VS Code (F5).