light palettes: --duoUser = --undUser felt so input/aperture fills blend with the page

On *-light palettes the dark-olive --duoUser felt (terFor) read too heavy as an input / aperture fill against the light page. The light-palette override block (body[class*="-light"]) now sets --duoUser: var(--undUser), so every --duoUser surface — e.g. oblivion-light's New Game / New Post composer inputs — uses the lighter forest felt and blends in. Overrides the :root --duoUser for every *-light palette (body[class*="-light"] out-specifies :root).

Composer polish (_applets.scss): the New Game / New Post line inputs gain an explicit --duoUser background fill + a --priUser placeholder colour, alongside the 700 weight + terUser focus shift already added. Forest felt (priFor) retuned in rootvars to suit the lighter light-palette fill.

[[project-room-scroll-of-events]]

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/static_src/scss/rootvars.scss

@@ -229,7 +229,7 @@
     --secPmm: 150, 120, 182;
     --terPmm: 112, 79, 146;
     // forest
-    --priFor: 114, 146, 79;
+    --priFor: 124, 156, 89;
     --secFor: 94, 124, 61;
     --terFor: 74, 102, 43;
 
@@ -512,6 +512,11 @@
 body[class*="-light"] {
     --tooltip-bg: 255, 255, 255;
     --title-shadow-offset: -0.06125rem;
+    /* The dark-olive --duoUser felt (terFor) reads too heavy as an input /
+       aperture fill against a light page — use the lighter --undUser felt
+       (priFor) instead, so e.g. oblivion-light's composer inputs blend with
+       the page. Overrides the :root --duoUser for every *-light palette. */
+    --duoUser: var(--undUser);
 }
 
 /* Palette Classes */