Wrap Deimos in Stooke's Viking map, once its longitudes were settled on the body

Audit #40. deimos.jpg was a 592x592 disc photograph, 32.6% black sky, left in the folder
unlisted by 302fa96 because the one cylindrical map found then (USGS
wms_basemaps/Deimos/deimoscyl4.jpg) gave no way to tell which way its longitudes ran. It is now
Stooke's later map of the same set, from the NASA PDS Small Bodies Node
(MULTI-SA-MULTI-6-STOOKEMAPS-V3.0, deimos_cyl_viking_mro.jpg): Viking Orbiter images with MRO
HiRISE detail, 7200x3600 simple cylindrical, "0 longitude at the center".

The guide does not say which way longitude runs, and USGS georeferences its copy of the older
version with 0 at the left edge. Settled on the body: read with 0 in the middle and east to the
right, and drawn as a globe from outside, the hemisphere at 90 E matches unmirrored the sheet
Stooke titles "trailing side" (270 W), and the one at 90 W his "leading side". A synchronous
prograde moon trails at 90 E, so that reading holds; read the USGS way, the sheets would land on
the wrong hemispheres. A 1 km depression sits at Swift's Gazetteer position (12.5 N, 1.8 E).

Processed like the other maps (build_maps.py): no no-data pixels to grey (13 source pixels of 26
million at 0), area-downsampled to 1024x512, JPEG q85, 55 KB. Black pixels (under 8 of 255): 0%.
The map wraps seamlessly (mean 1.8 grey levels across the seam).

Measured in the running app (port 4311) through the IAU rotation and MAP_TO_BODY: Mars stands
over 0.18 W, 0.41 W and 0.20 W of the drawn map (latitudes within 0.04 deg) on 2000-01-01.5,
2025-01-01 and 2050-01-01, and Deimos heads toward 90.08 W, 90.30 W and 90.11 W: the hemisphere
that matched Stooke's leading sheet leads.

texture-catalog.spec.ts now lists Deimos among the mapped bodies. Mutant: the deimos line removed
from BODY_TEXTURE_PATHS; only 'wraps the moons and dwarf planets that have a mission mosaic in it'
failed (1 of 805). The textures README gives the source, credit, licence (the PDS archive states no
use restriction) and the longitude check; the root README counts twenty-eight photographed bodies.
The five Uranian moons stay derived: USGS has only Voyager control networks for them, no mosaic.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

README.md

@@ -134,11 +134,11 @@ its own readout, so a stale image is visible as one.
 
 ### On surfaces that were never photographed
 
-Twenty-seven bodies here are wrapped in real photography: the Sun, the eight planets and the Moon,
-and seventeen moons and dwarf planets in mission mosaics, grey where no probe has seen them
+Twenty-eight bodies here are wrapped in real photography: the Sun, the eight planets and the Moon,
+and eighteen moons and dwarf planets in mission mosaics, grey where no probe has seen them
 (`src/assets/textures/README.md`). Everything else is not, and no exoplanet ever will be on
-current instruments: none has had its surface imaged. Deimos, the five large moons of Uranus and
-a few small bodies have no map in this asset set either.
+current instruments: none has had its surface imaged. The five large moons of Uranus and a few
+small bodies have no map in this asset set either.
 
 Those bodies get a surface reasoned from what *has* been measured, in a chain that is worth
 following because every link is standard: