fix(stalker): refresh stale embedded-series snapshots from favorites and dashboard (#1253)

Favorites and recently-viewed rows store Stalker items as full JSON
snapshots, so a vclub-style embedded series[] episode list froze at the
moment the row was written: a series favorited when only episode 1 was out
kept showing one episode forever when opened from favorites, recents,
Continue Watching, or any dashboard rail.

New withStalkerSnapshotRefresh() store feature renders the stored snapshot
immediately and re-fetches the item from the portal in the background via a
title search (get_ordered_list&type=vod&search=..., matched by id, paginated
up to 5 pages, wildcard-category retry), patching fresh episodes and cmd into
the active selection. The patch is guarded on both the item id and the active
playlist id, since Stalker ids are only unique per portal.

Only the in-memory selection is patched — the stored snapshot row is
deliberately left alone, because every entry path into the detail view runs
this refresh and writing it back would add an uncontrolled background writer
to the whole-playlist read-modify-write that every favorite/recent mutation
performs.

Also fixes the stalker-mock-server embedded-series scenario, which generated
series[] as objects the app's vclub adapters filter out instead of the
episode-number arrays real portals send.

Regular type=series and Ministra is_series items are unaffected; Xtream is
unaffected (get_series_info is never cached).

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

apps/stalker-mock-server/src/app/data-generator.ts

@@ -55,7 +55,8 @@ export interface RawVodItem {
     category_id: string;
     is_series: 0 | 1 | '1';
     has_files: number;
-    series?: RawEmbeddedEpisode[];
+    /** vclub-style embedded episode numbers, e.g. ['1', '2', '3'] */
+    series?: string[];
 }
 
 export interface RawSeriesItem {
@@ -95,12 +96,6 @@ export interface RawSeason {
     series: string[];
 }
 
-export interface RawEmbeddedEpisode {
-    id: number;
-    name: string;
-    cmd: string;
-}
-
 export interface RawEpgProgram {
     id: string;
     name: string;
@@ -388,19 +383,19 @@ function generateVodItems(
         };
 
         if (hasEmbeddedSeries) {
-            item.series = generateEmbeddedEpisodes(id, seasonsPerSeries * episodesPerSeason);
+            // Real vclub portals expose embedded episodes as an array of
+            // episode numbers; playback appends the number to the item cmd.
+            item.series = generateEmbeddedEpisodes(
+                seasonsPerSeries * episodesPerSeason
+            );
         }
 
         return item;
     });
 }
 
-function generateEmbeddedEpisodes(parentId: string, count: number): RawEmbeddedEpisode[] {
-    return Array.from({ length: count }, (_, i) => ({
-        id: parseInt(parentId) * 100 + i,
-        name: `Episode ${i + 1}`,
-        cmd: `ffrt4://vod/${parentId}/ep${i + 1}/index.m3u8`,
-    }));
+function generateEmbeddedEpisodes(count: number): string[] {
+    return Array.from({ length: count }, (_, i) => String(i + 1));
 }
 
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