Feature: Open .html files in the built-in browser pane

[arnestrickmann]

Feature Request

Description
Allow users to open local .html files directly in Emdash's built-in browser pane. This would be useful for previewing static HTML files, generated reports, documentation, or test output without leaving the app.

Current Behavior

The built-in browser pane only supports URLs. There's no way to open a local .html file from the file explorer or editor into the browser pane.

Expected Behavior

• Right-click an .html file in the file explorer → "Open in Browser Pane"
• Or click an .html file and have an option to preview it in the built-in browser
• The browser pane loads the file via a file:// URL or a local dev server

Why This Matters

Many workflows generate HTML output — test coverage reports, documentation builds, static site previews, email templates. Being able to preview these inline keeps the workflow inside Emdash.

[prath47]

@arnestrickmann i'll pick this one if nobody has. Please assign this to me

[prath47]

ok i see a PR tagged to it leaving it for now