Optimize the key usage experience

lib/menu_paginated.sh

@@ -27,21 +27,6 @@ _pm_parse_csv_to_array() {
     done
 }
 
-# Non-blocking input drain (bash 3.2) - improved for mouse wheel
-drain_pending_input() {
-    local _k drained=0
-    # Multiple passes to handle mouse wheel burst sequences
-    while IFS= read -r -s -n 1 -t 0.01 _k 2> /dev/null; do
-        ((drained++))
-        [[ $drained -gt 1000 ]] && break
-    done
-    # Second pass with shorter timeout
-    while IFS= read -r -s -n 1 -t 0.001 _k 2> /dev/null; do
-        ((drained++))
-        [[ $drained -gt 1500 ]] && break
-    done
-}
-
 # Main paginated multi-select menu function
 paginated_multi_select() {
     local title="$1"