Abort installation on sudo or command failure in sudo_if_install_dir_not_writeable

The function silently returned non-zero exit codes to callers (wrong
password, missing source file, permission denied, etc.), which allowed
the script to continue in a broken state.

Capturing $? immediately after the command and calling exit preserves
the original exit code and ensures any failure stops the installation
with a clear error message.

Author: albertodebortoli

install.sh

@@ -212,6 +212,7 @@ echo "🧹 Cleaned up temporary files"
 # This checks if the install directory is writable before using sudo
 sudo_if_install_dir_not_writeable() {
     local command="$1"
+    local exit_code
     if [ -w "$INSTALL_DIR" ]; then
         # Directory is writable, run without sudo
         sh -c "$command"
@@ -220,6 +221,11 @@ sudo_if_install_dir_not_writeable() {
         echo "🔐 Administrator privileges required for installation to $INSTALL_DIR"
         sudo sh -c "$command"
     fi
+    exit_code=$?
+    if [ "$exit_code" -ne 0 ]; then
+        echo "❌ ERROR: Command failed or was interrupted (exit code: $exit_code)"
+        exit "$exit_code"
+    fi
 }
 
 # Create install directory if it doesn't exist