v1.8.68: auto-fix X display authorization on startup

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

main.py

@@ -5,14 +5,48 @@ ServerManager — GUI application for managing remote servers.
 
 import sys
 import os
+import subprocess
 
 # Add project root to path
 sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))
 
+
+def _ensure_display_access():
+    """Auto-fix X display authorization for root and non-owner users."""
+    display = os.environ.get("DISPLAY")
+    if not display:
+        # Try common displays
+        for d in (":0", ":1", ":0.0"):
+            os.environ["DISPLAY"] = d
+            display = d
+            break
+    try:
+        subprocess.run(["xhost", "+local:"], stdout=subprocess.DEVNULL,
+                       stderr=subprocess.DEVNULL, timeout=3)
+    except (FileNotFoundError, subprocess.TimeoutExpired):
+        pass
+    # Fallback: generate xauth cookie if xhost not available
+    if display:
+        try:
+            subprocess.run(["xdpyinfo"], stdout=subprocess.DEVNULL,
+                           stderr=subprocess.DEVNULL, timeout=3, check=True)
+        except (FileNotFoundError, subprocess.TimeoutExpired, subprocess.CalledProcessError):
+            try:
+                xauth_file = os.path.expanduser("~/.Xauthority")
+                os.environ.setdefault("XAUTHORITY", xauth_file)
+                subprocess.run(
+                    ["xauth", "generate", display, ".", "trusted"],
+                    stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL, timeout=5
+                )
+            except (FileNotFoundError, subprocess.TimeoutExpired):
+                pass
+
+
 from gui.app import App
 
 
 def main():
+    _ensure_display_access()
     app = App()
     app.mainloop()