fix(#3165): OSC 8 hyperlinks not opening in the terminal

[nino-robotfutures-co]

OSC 8 escape-sequence hyperlinks are handled by xterm's internal OSC link provider, which uses the Terminal linkHandler option. We never set one, so it fell back to xterm's built-in default handler that calls window.open() with no URL and then assigns location.href. Under Electron the resulting about:blank open is denied by the window-open handler (it only forwards http/https/file URLs to shell.openExternal), so the link silently never opened — the confirm dialog appeared but nothing happened.

Provide a linkHandler that routes OSC 8 links through the same openLink path already used for URLs detected by the WebLinksAddon. The activate/hover/ leave behavior is factored into shared closures so both link types behave identically (including hover, which enables the "Open in External Browser" context menu on OSC 8 links).

Closes #3165

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No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Repository UI

Review profile: CHILL

Plan: Pro

Run ID: 7ceff6f6-2822-4e72-9d4e-ae8c04af7e8a

📥 Commits

Reviewing files that changed from the base of the PR and between 22197d4 and 18e3e9e.

📒 Files selected for processing (1)

• frontend/app/view/term/termwrap.ts

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Walkthrough

The TermWrap constructor in termwrap.ts is refactored to define three named local functions—activateLink, linkHover, and linkLeave—that consolidate all hyperlink interaction logic in one place. activateLink gates execution on the correct platform modifier key (Cmd on macOS, Ctrl elsewhere) and calls openLink(uri) via fireAndForget. linkHover updates hoveredLinkUri and invokes onLinkHover with mouse coordinates; linkLeave clears those values. These functions are then assigned to options.linkHandler (for OSC 8 links) and passed directly to the WebLinksAddon constructor, replacing previously duplicated inline callbacks.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately describes the main change: fixing OSC 8 hyperlinks not opening in the terminal, which is the primary objective of this pull request.
Description check	✅ Passed	The description is directly related to the changeset, explaining the root cause of the issue, the implementation approach, and how it resolves the problem by routing OSC 8 links through the existing openLink path.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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[nino-robotfutures-co]

I've signed the license; but it's not refreshing status here, despite pressing the nudge button; that's also the cause of the merge gatekeeper failure.