fix(pty): pass display/desktop env vars to PTY to open browser on linux

[jschwxrz]

summary:

• on linux, running gh pr view -w inside terminal fails because the PTY environment is missing display server variables

fix:

• added DISPLAY_ENV_VARS and pass them to PTY spawn functions

limits:

• could not reproduce on mac, linux specific issue

fixes #1147

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[greptile-apps]

Greptile Summary

This PR fixes an issue where running commands like gh pr view -w inside Emdash terminals fail on Linux because the PTY environment lacks display server variables needed to open a browser. The fix introduces a comprehensive set of display/desktop environment variables and passes them through to all three PTY spawn functions (startPty(), startDirectPty(), and startSshPty()). The implementation properly handles both X11 and Wayland display servers, including XDG desktop environment variables and D-Bus session addresses required by modern Linux desktop portals.

Confidence Score: 5/5

• This PR is safe to merge with minimal risk
• The changes are well-scoped, follow existing code patterns, and only add environment variable passthrough without modifying core logic. The implementation properly handles cross-platform compatibility (variables will be undefined on non-Linux systems), includes comprehensive comments, and applies the fix consistently across all PTY spawn functions.
• No files require special attention

Important Files Changed

Filename	Overview
src/main/services/ptyManager.ts	Added comprehensive display server environment variables (X11, Wayland, XDG, D-Bus) to enable browser opening from PTY on Linux

_{Last reviewed commit: b04ee7c}