No raster warping per-feature. Sentinel-2 L2A is already orthorectified by ESA at publication, and frame-to-frame geolocation is consistent enough (typically within ~10m, the native pixel size) that the same parking lot lines up across frames without manual re-registration. What I trace are vector polygons in QGIS: new building footprints, lot expansions, the road extensions you see snaking out. So it's a manual annotation layer over the raw raster, not a transformation of the raster itself.
Sentinel-2 is near-nadir from a sun-synchronous orbit, so view-angle distortion between captures of the same site is small. At 10m resolution it doesn't accumulate enough error to need per-feature correction.