Resolved ShellCheck warnings for intentional shell literals.

config/defaults.conf

@@ -23,7 +23,7 @@ INSTALLER_NAME="LogalDeveloper's Arch Linux Installer"
 
 # Network configuration
 INTERNET_CHECK_URL="https://logal.dev/"
-MIRROR_URL='https://mirrors.logal.dev/archlinux/$repo/os/$arch'
+MIRROR_URL="https://mirrors.logal.dev/archlinux/\$repo/os/\$arch"
 
 # Paths
 CA_CERTS_DIR="${SCRIPT_DIR}/files/certs"

lib/system/secureboot.sh

@@ -167,6 +167,7 @@ verify_signed_artifacts_in_chroot() {
     local artifact_path
 
     for artifact_path in "$@"; do
+        # shellcheck disable=SC2016 # Variables are expanded by the inner chroot shell.
         run_cmd_in_chroot sh -c '
 esp_path="$1"
 artifact_path="$2"