feat(ground-suite): redesign observability console

docs/src/ground-suite.md

@@ -14,10 +14,22 @@ 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 near-black, muted-silver,
-and restrained green accents with locally blurred translucent panels.
-The observation bar also offers a current-session System, Light, or Dark
-appearance selector.
+current preference by default. Its dark theme uses a near-black canvas,
+muted-silver text, and restrained green accents. Locally blurred glass is
+limited to persistent navigation and session chrome; vehicle facts and the
+event stream use opaque instrument surfaces so they remain readable at volume.
+The desktop rail and compact session strip offer a current-session System,
+Light, or Dark appearance selector.
+
+The replay shell is organised as an operator scan path: source and authority,
+then last reported heartbeat and observed streams, then ingress accounting and
+the event stream. It labels reported vehicle state precisely and never infers
+current safety, command authority, or configuration capability from a replay
+or a received diagnostic record. The event stream keeps ordinary logs, runtime
+errors, and orderly shutdown reports visually and semantically distinct. Its
+local history is bounded; the interface prioritises runtime errors and orderly
+shutdown reports, and reports any local UI eviction independently from
+vehicle-side diagnostic loss.
 
 Ground Suite uses a receive-only source/decoder/classifier boundary. The
 replay implementation feeds typed observations today. A future live adapter