feat: restore legacy named playlist workflows

Web/legacy-foreign-index-candle-workflow.js

@@ -308,6 +308,14 @@
     }) : null;
   }
 
+  function withEnabled(entry, enabled) {
+    if (!materializedEntries.has(entry) || typeof enabled !== "boolean") return null;
+    if (entry.enabled === enabled) return entry;
+    const replacement = Object.freeze({ ...entry, enabled });
+    materializedEntries.add(replacement);
+    return replacement;
+  }
+
   function matchesRaw(entry, raw) {
     const signature = legacySelectionForEntry(entry);
     return Boolean(signature && raw && typeof raw.enabled === "boolean" &&
@@ -333,6 +341,7 @@
     normalizeError,
     materialize,
     restorePlaylistEntry,
+    withEnabled,
     legacySelectionForEntry,
     matchesRaw,
     isPending,