fix: use effective uid instead of uid

src/ahriman/core/utils.py

@@ -192,7 +192,7 @@ def check_user(root: Path, *, unsafe: bool) -> None:
     if unsafe:
         return  # unsafe flag is enabled, no check performed
 
-    current_uid = os.getuid()
+    current_uid = os.geteuid()
     root_uid, _ = owner(root)
 
     if current_uid != root_uid:

src/ahriman/models/repository_paths.py

@@ -239,7 +239,7 @@ class RepositoryPaths(LazyLogging):
         # the reason we do this is that it only works if permissions can be actually changed. Hence,
         # non-privileged user (e.g. personal user or ahriman user) can't change permissions.
         # The only one who can do so is root, so if user is not root we just terminate function
-        current_uid, current_gid = os.getuid(), os.getgid()
+        current_uid, current_gid = os.geteuid(), os.getegid()
         if current_uid != 0:
             yield
             return