Late spring evenings on the streets off High Street go gold, then blue, and the porch lights come on one at a time. Hernandez Lawn Care & Construction LLC works the narrow driveways and small front lawns along there — mowing, trimming close to steps and railings, edging the walk so it holds a line. These are compact yards where every foot is visible, and sloppy work has nowhere to hide. Cleanups in spring and fall keep the beds honest between the mowing months. A short lawn, a crisp edge, a swept walk: that is the whole ambition, and it is enough.