fix(roadtrip): a stay that outlasts the day takes the road with it

Three things the day boundary was swallowing, all from the same stay.

The stop after it stayed on yesterday. It is reached a full day later but at a
later reading on the clock, and the only rule watching for a new day was "the
clock went backwards" — which that never does. The schedule's own count knows,
as long as it is read as a difference: a day whose first arrivals came out
negative is lifted whole, and reading the lifted offsets raw once moved an early
stop to tomorrow while leaving the late one behind. It now crosses over properly,
marked as having set off the day before.

The morning after started at the exact minute the stay ended, as if the road to
the first stop took no time. The carried minute is a departure; the drive from
there is added to it.

And that drive was invisible. It was on the map and in the day's total, but the
rail jumped straight to a stop at 08:11 after a stay that ended at 08:00. It gets
the same band any other drive gets, above the stop it arrives at — except where a
stop crossed over, which already draws that road under its own block.

client/src/components/Roadtrip/RoadtripSidebar.tsx

@@ -1609,6 +1609,11 @@ function DaySection({ day, selectedAssignmentId, onSelectStop, onReorderStop, on
       {/* Folded to the header, and with it off the map: what is not listed here is not
           drawn there either, which is the whole point of putting a day away. */}
       <ol className="px-3.5 pb-3 pt-3" hidden={collapsed}>
+        {/* The drive in from yesterday, above the first stop, because that is where it
+            happens. Without it a morning that starts at 08:11 after a stay that ended at
+            08:00 looks like eleven minutes went missing. A day whose first stop crossed
+            over instead gets that road under its own block, so this is left out there. */}
+        {day.arrivingLeg ? <DriveBand leg={day.arrivingLeg} /> : null}
         {runs.map(run => (
           run.spill ? (
             <SpillBlock key={`spill-${run.from}`} spill={run.spill}>