feat(web): tell pending seasons from settled empty

web/src/series.ts

@@ -16,6 +16,8 @@ export interface ApiSeries {
   year: number | null;
   root_id: number;
   blocked: boolean;
+  /** Null until a metadata refresh has stamped it (#160, #177). */
+  metadata_refreshed_at: string | null;
   status: SeriesStatus;
   wanted_episodes: number;
   available_episodes: number;
@@ -79,6 +81,19 @@ export async function fetchSeasons(seriesId: number): Promise<SeasonsOutcome> {
   }
 }
 
+/** Issue #177: resend the on-demand refresh a page gave up polling for. */
+export async function refreshSeriesMetadata(seriesId: number): Promise<ActionOutcome> {
+  try {
+    const response = await fetch(`/api/series/${seriesId}/refresh-metadata`, { method: "POST" });
+    if (!response.ok) {
+      return { kind: "error", detail: await errorDetail(response) };
+    }
+    return { kind: "done" };
+  } catch {
+    return { kind: "error", detail: "daemon unreachable" };
+  }
+}
+
 /** One imported episode file as `/api/series/{id}/files` reports it (§7.4). */
 export interface EpisodeFile {
   episode_id: number;