fix: harden Structural S/R after OHLCV writes and surface cleanup failures

Honor custom S/R tolerance as a transient detect, refresh levels after OHLCV
mutations without failing committed price writes, report per-ticker S/R
rebuild failures from admin cleanup, and warn in the admin UI when refresh is partial.

frontend/src/api/admin.ts

@@ -269,9 +269,18 @@ export function acknowledgeSystemEvents(days = 7) {
 }
 
 // Data cleanup
+export interface CleanupResult {
+  ohlcv: number;
+  sentiment: number;
+  fundamentals: number;
+  sr_refresh_ok: number;
+  sr_refresh_failed: number;
+  sr_refresh_failures: { symbol: string; error: string }[];
+}
+
 export function cleanupData(olderThanDays: number) {
   return apiClient
-    .post<{ message: string }>('admin/data/cleanup', {
+    .post<CleanupResult>('admin/data/cleanup', {
       older_than_days: olderThanDays,
     })
     .then((r) => r.data);