Expand patch for python 3.14 issue with archinstall 4.2

configs/airootfs/root/.automated_script.sh

@@ -80,10 +80,17 @@ install_base_system() {
   # Ensure that no mounts exist from past install attempts
   findmnt -R /mnt >/dev/null && umount -R /mnt
 
-  # Workaround for archinstall 4.2 regression in sync_log_to_install_medium:
-  # `self.target / absolute_logfile` drops self.target because the RHS is
-  # absolute, so Python 3.14 Path.copy() raises EINVAL (source == target).
-  sed -i 's|logfile_target = self\.target / absolute_logfile$|logfile_target = self.target / absolute_logfile.relative_to("/")|' \
+  # Workarounds for archinstall 4.2 regressions under Python 3.14:
+  # 1. sync_log_to_install_medium: `self.target / absolute_logfile` drops
+  #    self.target because the RHS is absolute, so Path.copy() raises EINVAL
+  #    (source == target).
+  # 2. _add_limine_bootloader: `Path.copy(efi_dir_path)` raises IsADirectoryError
+  #    because 3.14's Path.copy treats target as a literal path, not a directory
+  #    (shutil.copy used to auto-append the source filename).
+  sed -i \
+    -e 's|logfile_target = self\.target / absolute_logfile$|logfile_target = self.target / absolute_logfile.relative_to("/")|' \
+    -e 's|(limine_path / file)\.copy(efi_dir_path)|(limine_path / file).copy(efi_dir_path / file)|' \
+    -e "s|(limine_path / 'limine-bios.sys')\.copy(boot_limine_path)|(limine_path / 'limine-bios.sys').copy(boot_limine_path / 'limine-bios.sys')|" \
     /usr/lib/python3.14/site-packages/archinstall/lib/installer.py
 
   # Install using files generated by the ./configurator