feat(ground-suite): add system glass themes

docs/src/ground-suite.md

@@ -13,6 +13,11 @@ every inbound MAVLink frame, and SITL does not yet expose a MAVLink endpoint.
 Link presence is never presented as proof of safety, authority, arming state,
 or write capability.
 
+Ground Suite provides light and dark themes, selecting the operating system's
+current preference by default. The dark theme uses Orkavian's near-black,
+muted-silver, and restrained green-accent visual language with locally blurred
+translucent panels.
+
 Ground Suite uses a receive-only source/decoder/classifier boundary. The
 replay implementation feeds typed observations today. A future live adapter
 must combine pinned MAVLink Common definitions with `kaptan.xml`, reject