feat: Update API versioning and parser handling for improved schedule updates and error management

shared/updates.js

@@ -15,12 +15,15 @@ export function namesGroup(fileName, group) {
 }
 
 /**
- * changed: the same document was republished (or parsed by an older version) — reload it quietly.
+ * changed: the same document was republished, or parsed by an older parser than the server's
+ *          (`catalog.parserVersion`, from API version 10) — reload it quietly.
  * newer:   another document for this group appeared later, e.g. the next semester — offer it.
  * missing: the document left the catalog, e.g. a new academic year began.
  */
 export function scheduleUpdate(saved, catalog, group, options = {}) {
-  const { dismissed = [], schemaVersion = 0 } = options;
+  // A server without parserVersion never asks for a re-read: comparing with a guess could
+  // reload the same document on every check.
+  const { dismissed = [], schemaVersion = catalog?.parserVersion ?? 0 } = options;
   const fileId = saved?.source?.fileId;
   if (!fileId || !catalog?.files || catalog.stale) return null;
   const current = catalog.files.find((f) => f.id === fileId) || null;