Keep mapping collapsed on reload

public/app.ts

@@ -436,7 +436,7 @@ function renderMappingSources(data) {
   if (!data.mapped || !items.length) {
     setMappingStatus(data.message || "Mapping missing", "is-missing");
     mappingList.replaceChildren();
-    mappingDetails.open = true;
+    mappingDetails.open = false;
     return;
   }
 
@@ -448,7 +448,7 @@ function renderMappingSources(data) {
     ? `Sources OK ✓ (${testedCount}/${enabledCount})`
     : data.message || `Sources problem (${testedCount}/${enabledCount})`;
   setMappingStatus(statusText, ready ? "is-ready" : testedCount > 0 ? "is-warning" : "is-missing");
-  mappingDetails.open = !ready || failedCount > 0;
+  mappingDetails.open = false;
 
   mappingList.replaceChildren(
     ...items.map((item) => {