Add signal handlers for SIGINT, SIGCHLD and terminal resize events

pshell.pl

@@ -15,6 +15,11 @@ my $env = Environment::SQLite->new(
     db_path => 'pshell_env.db'
 );
 
+# Signal handling setup
+$SIG{INT} = sub { print "\n"; };
+$SIG{CHLD} = 'IGNORE';
+$SIG{WINCH} = sub { $term->resize_terminal if defined $term };
+
 print "Perl Shell (pshell) - Type 'exit' to quit\n";
 
 my $term = Term::ReadLine->new('pshell');