Reworked the gamescope to work better with scaling and maximize window.

ptlinux/self_update.py

@@ -837,6 +837,11 @@ def _extract_release_archive(archive: Path, destination: Path, version: str) ->
 				raise LauncherUpdateError(
 					f"launcher archive member is group/world writable: {member.name!r}"
 				)
+			permissions = member.mode & 0o777
+			if member.isfile() and permissions not in {0o644, 0o755}:
+				raise LauncherUpdateError(
+					f"launcher archive member has unsupported permissions: {member.name!r}"
+				)
 			target = destination.joinpath(*relative.parts)
 			if member.isdir():
 				target.mkdir(parents=True, exist_ok=True, mode=0o755)
@@ -866,7 +871,7 @@ def _extract_release_archive(archive: Path, destination: Path, version: str) ->
 				raise LauncherUpdateError(
 					f"launcher payload was incomplete: {member.name!r}"
 				)
-			target.chmod(0o644)
+			target.chmod(permissions)
 
 
 def _validate_release_directory(release: Path) -> str: