[Feature]: allow wider side panel sizes for built-in browser

[olivoil]

Before submitting

• I searched existing issues and did not find a duplicate.
• I am describing a concrete problem or use case, not just a vague idea.

Area

apps/web

Problem or use case

The right panel has a hard stop at 1400px. On larger monitors, that leaves plenty of negative space around the chat, while the browser viewport stays pretty narrow.

It would be useful to remove the hard 1400px wide limit to preview wider desktop layouts in the built-in browser.

The width of the panel is currently limited to this in apps/web/src/components/preview/PreviewPanelShell.tsx:

return Math.min(
  PREVIEW_PANEL_MAX_WIDTH_PX, // 1400px
  Math.floor(vw * PREVIEW_PANEL_MAX_WIDTH_FRACTION), // 0.7
);

Proposed solution

Would it make sense to remove the fixed 1400px ceiling and let the existing 70vw limit handle this instead?

return Math.floor(vw * PREVIEW_PANEL_MAX_WIDTH_FRACTION);

Why this matters

Users with larger monitors. On a 6k monitor, at the moment, I have to switch to an external browser, because the built-in browser is just too small.

Smallest useful scope

return Math.floor(vw * PREVIEW_PANEL_MAX_WIDTH_FRACTION);

Alternatives considered

No response

Risks or tradeoffs

No response

Examples or references

No response

Contribution

• I would be open to helping implement this.