fix: Improve sudo privilege check and provide user guidance for password prompts

update.sh

@@ -135,12 +135,14 @@ check_privileges() {
         return 0
     fi
 
-    if ! sudo -n true 2>/dev/null; then
-        log_message "ERROR" "This script requires sudo privileges"
-        exit 4
+    # Check if sudo is available, but don't require it upfront
+    if sudo -n true 2>/dev/null; then
+        debug_log "Sudo privileges confirmed and cached"
+    else
+        log_message "INFO" "Sudo credentials not cached - you may be prompted for password during updates"
+        log_message "INFO" "To avoid prompts, run: sudo -v before running this script"
     fi
 
-    debug_log "Sudo privileges confirmed"
     return 0
 }
 
@@ -239,7 +241,7 @@ detect_os() {
     log_message "INFO" "Detecting operating system..."
 
     if [[ -f /etc/os-release ]]; then
-        # shellcheck source=/etc/os-release
+        # shellcheck disable=SC1091
         . /etc/os-release
         OS_NAME="$ID"
         OS_VERSION="$VERSION_ID"