feat(settings): unify Streamystats + Marlin URL inputs via the resolver

- jellyfinProbe (/System/Info/Public, ProductName check) + reachabilityProbe (services with no health route).

- ServerUrlStatusText: compact resolver status for ListItem-row layouts.

- Streamystats + Marlin: resolve the URL on blur (https-first, http fallback) and store the canonical URL; inline status feedback.

utils/serverUrl/index.ts

@@ -3,7 +3,9 @@ export {
   type ParsedServerInput,
   parseServerInput,
 } from "./candidates";
+export { jellyfinProbe } from "./probes/jellyfin";
 export { jellyseerrProbe } from "./probes/jellyseerr";
+export { reachabilityProbe } from "./probes/reachability";
 export {
   type ResolveFailureReason,
   type ResolveOptions,