Abort installation on SIGINT (Ctrl+C)

Without a trap, pressing Ctrl+C during a sudo password prompt does not
terminate the script. sudo catches SIGINT internally to restore terminal
state and exits with a non-zero code, but bash never sees a signal-killed
child and continues execution.

Registering a trap on INT ensures the script always exits with code 130
(the conventional code for SIGINT-terminated processes) regardless of
how the signal is handled by child processes.

Author: albertodebortoli

install.sh

@@ -25,6 +25,8 @@ POST_CHECKOUT_HOOK_URL="https://raw.githubusercontent.com/LucaTools/LucaScripts/
 # GITHUB API AUTHENTICATION
 # =============================================================================
 
+trap 'printf "\n❌ Installation interrupted.\n"; exit 130' INT
+
 # Build curl options for GitHub API requests.
 # If GITHUB_TOKEN is set, include it as a Bearer token to avoid rate limiting
 # (5000 req/hr authenticated vs. 60 req/hr unauthenticated).