Give the foliage two green tones and fix the textured_solid import bug

TODO.md

@@ -184,6 +184,11 @@ licence-free zone only.
       `trash_bin` are ship-ready.)
 - [ ] Foliage: replace the flat-shaded `_shrub()`/`_tree()` clumps with `vegetation-artist`-style
       carded clusters; measure triangles and keep the 60k `LIBRARY_TRIANGLE_BUDGET`.
+      (Partial 2026-11-04: `_shrub()` clumps and the palm fronds now alternate two green tones
+      (`foliage`/`foliage_dark`, `palm_leaf`/`palm_leaf_dark`) so the crown is no longer one flat
+      colour, and a `textured_solid` bug that broke `planter_box`/`round_planter` imports was
+      fixed. The two-tone read is subtle at gallery distance; the full carded-cluster pass remains
+      the owner-gated P1.)
 - [ ] Materials and emissives: `lookdev` pass on bulbs, signs, lanterns, the marquee and the
       sedan at day and late; confirm the flashlight stays a tight spot with no beam geometry.
 - [ ] Collision: verify every prop collider and navigation obstacle matches its silhouette and