feat(tv): add Jellyseerr connect support on TV (incl. Apple TV)

Adds the missing piece for Jellyseerr on TV: a way to configure and
connect to a Jellyseerr server from the TV settings screen. The discover
and search UI, native tvOS search field, and post-login auto-connect
already existed on develop, but there was no TV-side connect/disconnect
flow — so seerr could never be enabled on Apple TV.

- settings.tv.tsx: new "seerr" section with server URL + password inputs
  and Connect/Disconnect (respects plugin-locked server URLs)
- useJellyseerr: add validateJellyseerrSession(); clear cached search
  results on disconnect
- search: prompt to connect when a server is configured but no session
  exists, and warn when the session has expired on Discover
- translations: add connect/session keys to en + sv

All additions are platform-agnostic React Native, so they work on both
Apple TV and Android TV. Ported from #1676 (which was 40 commits behind
develop and conflicting); the unrelated Android tv-recommendations
changes from that PR were intentionally left out.

Co-authored-by: Lance Chant <13349722+lancechant@users.noreply.github.com>
Claude-Session: https://claude.ai/code/session_016Hhu5DruGLPhdP4LAoy1Xd

hooks/useJellyseerr.ts

@@ -70,6 +70,35 @@ export const clearJellyseerrStorageData = () => {
   storage.remove(JELLYSEERR_COOKIES);
 };
 
+export type JellyseerrSessionStatus =
+  | { valid: true }
+  | { valid: false; reason: "no_session" | "expired" };
+
+/**
+ * Checks whether the persisted Jellyseerr session (user + cookies) is still
+ * valid by hitting the server status endpoint. Clears local session data if the
+ * request fails (expired/revoked cookie).
+ */
+export async function validateJellyseerrSession(
+  serverUrl: string,
+): Promise<JellyseerrSessionStatus> {
+  const user = storage.get<JellyseerrUser>(JELLYSEERR_USER);
+  const cookies = storage.get<string[]>(JELLYSEERR_COOKIES);
+
+  if (!user || !cookies) {
+    return { valid: false, reason: "no_session" };
+  }
+
+  try {
+    const api = new JellyseerrApi(serverUrl);
+    await api.axios.get(Endpoints.API_V1 + Endpoints.STATUS);
+    return { valid: true };
+  } catch {
+    clearJellyseerrStorageData();
+    return { valid: false, reason: "expired" };
+  }
+}
+
 export enum Endpoints {
   STATUS = "/status",
   API_V1 = "/api/v1",
@@ -450,7 +479,8 @@ export const useJellyseerr = () => {
     clearJellyseerrStorageData();
     setJellyseerrUser(undefined);
     updateSettings({ jellyseerrServerUrl: undefined });
-  }, []);
+    queryClient.removeQueries({ queryKey: ["search", "jellyseerr"] });
+  }, [queryClient]);
 
   const requestMedia = useCallback(
     (title: string, request: MediaRequestBody, onSuccess?: () => void) => {