Chams: material styles and viewmodel support

- Material selector 0..4: debugwhite, debug wireframe (ignorez), vgui
  white_additive, debugtranslucentsinglecolor, vgui/white; cached per index
  with a debugwhite fallback.
- Add "Viewmodel (hands/weapon)" toggle; viewmodel entities (class contains
  viewmodel or model path /v_...) get a normal-depth chams pass.
- [chams] gains viewmodel= and material=.

1 files changed, 11 insertions, 6 deletions

diff --git a/CONTEXT.md b/CONTEXT.md
index 60a5a91..c95095b 100644
--- a/CONTEXT.md
+++ b/CONTEXT.md
@@ -293,12 +293,17 @@ vocabulary / decisions.
   materials ignore ColorModulate. The shared material's flag and colour are
   restored to (false, white) after the draw.
 - Material lookup walks the `IMaterialSystem` list (`world_find_material`), with
-  `FindMaterial` (slot 71) as the fallback. Candidates, in order:
-  `models/debug/debugwhite{2,3}`, `vgui/white`,
-  `debug/debugtranslucentsinglecolor`, `debug/debugwireframevertexcolorignorez`.
-  The chosen material name is logged.
-- Feature is off by default; `[chams] active/bind/walls/r/g/b`, with a
-  "Through walls" toggle and colour picker in the Visuals card.
+  `FindMaterial` (slot 71) as the fallback. The style index selects:
+  0 `models/debug/debugwhite`, 1 `debug/debugwireframevertexcolorignorez`,
+  2 `vgui/white_additive`, 3 `debug/debugtranslucentsinglecolor`,
+  4 `vgui/white`; if the requested style is unavailable it falls back to the
+  first available debugwhite candidate. The chosen material name is logged.
+- `Viewmodel (hands/weapon)` also applies the override to entities whose class
+  contains `viewmodel` or whose model path is `.../v_...`. The viewmodel gets
+  only the normal-depth pass (no ignorez).
+- Feature is off by default; `[chams] active/bind/walls/viewmodel/material/r/g/b`,
+  with Through walls, Viewmodel, Material (0..4) and colour in the Visuals
+  card.
 - This is a flat material override, not stencil outlines; depth handling is
   the simple ignorez/normal two-pass.