Drop the unused Logo icon variant, poll the Home runs tile at 10s

The icon variant lost its last caller when the responsive variant stopped
carrying a second cropped image. runOverviewQueryOptions now takes the
refetch interval, defaulting to the 30s the Runs screen and the dashboard
panel want; Home passes 10s so a short run does not linger on the tile.
agents.md spells the API host as api.${DOMAIN}, which is what the rest of
the docs use.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01CL9zvnnvcp1mvA8o7impxk

frontend/src/components/Runs/queries.ts

@@ -73,10 +73,16 @@ export const runsListQueryOptions = (
   queryFn: () => RunsService.readRuns(filters),
 })
 
-export const runOverviewQueryOptions = () => ({
+/**
+ * Runs counted by status.
+ *
+ * A training run is measured in hours, so half a minute is close enough by
+ * default; a caller watching short runs land passes something shorter.
+ */
+export const runOverviewQueryOptions = (refetchInterval = 30_000) => ({
   queryKey: runKeys.overview,
   queryFn: () => RunsService.readOverview(),
-  refetchInterval: 30_000,
+  refetchInterval,
 })
 
 export const runQueryOptions = (id: string) => ({