feat(desktop): add support for Open in Windows Terminal in the header menu

[NazmusSayad]

Issue for this PR

N/A: new feature request. No existing issue.

Type of change

• New feature

What does this PR do?

• Uses the Windows Terminal icon for the new menu item.
• Adds a Windows only Terminal option to the session header's "Open in x" menu.
• Wires the option through both desktop implementations: Tauri and Electron.

Note: wt.exe -d <dir> alone isn’t enough. working directory is important to ensure new tabs open in the same folder.

How did you verify your code works?

• Tested on Windows 11 with both Tauri and Electron builds. Verified that the Terminal option appears in the session header menu and opens the terminal in the correct directory.
• Tested opening new tabs from the initial terminal to confirm they inherit the expected directory behavior.
• Not tested in Windows 10, but should work similarly since the Windows Terminal behavior is pretty consistent across os versions.

Screenshots / recordings

Video attached:

1777022362.mp4

Checklist

• I have tested my changes locally
• I have not included unrelated changes in this PR

[github-actions]

Hey! Your PR title desktop: add support for Open in Windows Terminal in the header menu doesn't follow conventional commit format.

Please update it to start with one of:

• feat: or feat(scope): new feature
• fix: or fix(scope): bug fix
• docs: or docs(scope): documentation changes
• chore: or chore(scope): maintenance tasks
• refactor: or refactor(scope): code refactoring
• test: or test(scope): adding or updating tests

Where scope is the package name (e.g., app, desktop, opencode).

See CONTRIBUTING.md for details.

[github-actions]

Thanks for updating your PR! It now meets our contributing guidelines. 👍

[github-actions]

Thanks for updating your PR! It now meets our contributing guidelines. 👍