[desktop] Links in chat render as inactive: pointer cursor unchanged, click does nothing (regression in 1.18.33) #52255

Description

In the desktop app, URLs in assistant messages are rendered blue and underlined, but hovering over them does not change the mouse cursor to a pointer/link cursor, and clicking does nothing — neither the default browser nor the embedded viewer opens. Plain-text selection still works normally.

Rollback confirms this is a regression introduced in 1.18.33:

• 1.18.32: links open in the default browser on click (hover cursor still shows arrow, minor cosmetic quirk)
• 1.18.33: links are dead — no hover cursor change, no click handler fires

Related historical issues (both fixed previously, likely touched the same code path):

• when click on a link ,in opencode desktop , it opens the link in the same window , not external browser #8361 — closed by fix(app): restore external link opening in system browser #10697 (links opened in-app instead of external browser)
• Opening a link within the Linux app brings you to a "dead end" #6484 — closed by fix(desktop): open external links in default browser #7221 (Linux: links opened in embedded fullscreen viewer)
• desktop: file links send literal ellipsis (U+2026) to /api/fs/read and 404 #51516 — recently filed, adjacent symptom: desktop file links sending U+2026 to /api/fs/read

Plugins

No response

OpenCode version

1.18.33 (working: 1.18.32)

Steps to reproduce

1. Run any session and ask the model to include a URL in its reply (e.g. "send me a link to google")
2. Hover over the rendered URL in the message
3. Observe: cursor stays as arrow, underline-on-hover highlight appears
4. Left-click the URL
5. Nothing happens

Expected behavior

Hover shows pointer cursor and underline-on-hover highlight; click opens the URL in the default browser (as in 1.18.32).

Operating System

Linux (Debian-family, X11)

Notes

Verified by installing the official 1.18.32 deb alongside:
https://github.com/anomalyco/opencode/releases/download/v1.18.32/opencode-desktop-linux-amd64.deb
Same machine, same user profile/config — 1.18.32 handles link clicks correctly.