feat(#76): bound primary-route fetches and local-first driver summary

Add shared apiFetch timeouts/abort/typed errors with in-flight dedupe, a
RouteState UI for loading/empty/timeout/error+retry, and wire it through
Weekend (Data Health), Championship, Driver Profile, Briefing, Live, and
Race Hub. Driver summary is local-first with bounded optional OpenF1
enrichment so a hung remote call cannot block the profile.

Spike note: parseSourceMode defaults to openf1; driver summary now treats
omitted ?source= as auto so local season data is preferred.

Co-authored-by: Cursor <cursoragent@cursor.com>

frontend/src/main.tsx

@@ -9,7 +9,8 @@ const queryClient = new QueryClient({
   defaultOptions: {
     queries: {
       staleTime: 30_000,
-      retry: 1,
+      // Explicit Retry on RouteState — avoid automatic retry storms.
+      retry: false,
     },
   },
 })