fix(integrations): resolve intermittent Seerr/Overseerr crashes and add query status to context menu

- Add fallbackToStaleOnError option to createRequestHandler to serve
  stale cached data when upstream APIs fail transiently
- Set cacheTtlMs: 60_000 and fallbackToStaleOnError: true on
  mediaRequestListRequestHandler to restore pre-v1.69.0 cache duration
- Add response.ok check in OverseerrIntegration.getItemInformationAsync
- Change Promise.all to Promise.allSettled in getRequestsAsync so a
  single failing media detail fetch skips that item instead of crashing
- Replace WidgetCacheAge with WidgetQueryStatus in the right-click
  context menu, showing error/success/loading state with age and
  error message tooltip

Fixes #6329

packages/request-handler/src/lib/integration-request-handler.ts

@@ -13,6 +13,7 @@ type IntegrationOfKind<TKind extends IntegrationKind> = Omit<Integration, "kind"
 interface Options<TData, TKind extends IntegrationKind, TInput extends Record<string, unknown>> {
   requestAsync: (integration: IntegrationOfKind<TKind>, input: TInput) => Promise<TData>;
   cacheTtlMs?: number;
+  fallbackToStaleOnError?: boolean;
 }
 
 export const createIntegrationRequestHandler = <
@@ -32,6 +33,7 @@ export const createIntegrationRequestHandler = <
       return options.requestAsync(integration, input.options);
     },
     cacheTtlMs: options.cacheTtlMs,
+    fallbackToStaleOnError: options.fallbackToStaleOnError,
   });
 
   return {

packages/request-handler/src/lib/request-handler.ts

@@ -1,6 +1,7 @@
 interface Options<TData, TInput extends Record<string, unknown>> {
   requestAsync: (input: TInput) => Promise<TData>;
   cacheTtlMs?: number;
+  fallbackToStaleOnError?: boolean;
 }
 
 type CacheEntry<TData> = { data: TData; timestamp: Date; expiresAt: number };
@@ -35,7 +36,6 @@ export const createRequestHandler = <TData, TInput extends Record<string, unknow
         if (cached && Date.now() < cached.expiresAt) {
           return { data: cached.data, timestamp: cached.timestamp };
         }
-        if (cached) cache.delete(key);
 
         const existing = inflight.get(key);
         if (existing) return existing;
@@ -55,6 +55,9 @@ export const createRequestHandler = <TData, TInput extends Record<string, unknow
           })
           .catch((err) => {
             inflight.delete(key);
+            if (options.fallbackToStaleOnError && cached) {
+              return cached;
+            }
             throw err;
           });
 

packages/request-handler/src/media-request-list.ts

@@ -13,4 +13,6 @@ export const mediaRequestListRequestHandler = createIntegrationRequestHandler<
     const integrationInstance = await createIntegrationAsync(integration);
     return await integrationInstance.getRequestsAsync();
   },
+  cacheTtlMs: 60_000,
+  fallbackToStaleOnError: true,
 });