feat(terminal): add clickable file path links

[maskar]

Summary

File paths in terminal output are now highlighted and clickable. Clicking opens the file with the system default handler.

Supports:

• Absolute paths: /Users/foo/bar.ts
• Relative paths: ./src/lib/theme.ts, ../package.json
• Bare relative: src/components/Foo.tsx
• Scoped packages: @xterm/xterm/typings/xterm.d.ts
• Line/col suffixes: src/App.tsx:42:10 (stripped before opening)
• Trailing punctuation is stripped (e.g. file.md. → file.md)

Also adds an onFileLink callback prop to TerminalView for parent components to handle specific file types differently.

Test plan

• File paths in terminal output are underlined on hover
• Clicking a file path opens it in the default application
• Paths with :line:col suffixes are recognized and opened correctly
• Trailing punctuation (., ,, )) is not included in the link

[johannesjo]

Very nice addition! Could you have a look at the conflicts?

[maskar]

Rebased on latest main, conflicts resolved.

[johannesjo]

Thank you! Was closing this intentional?

[maskar]

No, not intentional — the force push after rebasing may have caused GitHub to auto-close it. I can't reopen it (GitHub error). Want me to open a fresh PR from the same branch?

[johannesjo]

Want me to open a fresh PR from the same branch? Yes, that would be great! Though I think I might have somehow merged this. Maybe together with one of the other PRs?