lineup: shiny Lapras on the open sea (ROUTE_20 mid-water)

Checked rather than assumed: the arena stages fine out there (noArena=0),
which was the open question -- STADIUM A wants clear GROUND and there is none
for fifty tiles in either direction. The water reads as the floor, the
shoreline sits on the horizon, and the sparkle ring lands clear of the shell.

tests/shiny_run.sh

@@ -20,16 +20,16 @@ DRIVER=mods/DramaticShapeVoxelMod/tests/shiny_one.lua
 
 # species | level | map | cell x | cell y | rung
 #
-# Each legendary in the cave it actually lives in. A species or map this
-# dataset does not have is skipped with a line rather than failing the run,
-# so trimming this list is just deleting rows.
+# Lapras out on the open sea: ROUTE_20 is the 50-wide water run between
+# Fuchsia and Cinnabar, and the middle of it is nothing but water in every
+# direction. A species or map this dataset does not have is skipped with a
+# line rather than failing the run.
 #
 # The rung column picks STADIUM A (the fight staged on the map itself) or
-# STADIUM B (the two carried discs). A cave floor is cramped and often has no
-# clear ground to stage on, which is precisely what B exists for.
+# STADIUM B (the two carried discs). Over open water there is no clear GROUND
+# to stage on, which is exactly the case B exists for -- see shiny_one.lua.
 RUNS=(
-  "MEWTWO|70|CERULEAN_CAVE_B1F|7|4|stadium"
-  "ARTICUNO|50|SEAFOAM_ISLANDS_B4F|7|4|stadium"
+  "LAPRAS|40|ROUTE_20|25|4|stadium"
 )
 
 OPTS="$APPDATA/LOVE/pokemon-love2d/options.lua"