fix ags: build deps separately with log capture, sync DB preflight

modules/core/preflight.sh

@@ -53,6 +53,9 @@ module_main() {
       exit 0
     fi
 
+    tui_info "Updating system (pacman -Syu) on fresh VM..."
+    sudo_run pacman -Syu --noconfirm
+
     if ! have paru && ! have yay; then
       install_aur_helper
     fi