TitleDb loading is handled for multithreading

Fix some memory leaks

TinfoilVibeServer/Services/SnapshotService.cs

@@ -543,9 +543,16 @@ public sealed class SnapshotService : IDisposable, ISnapshotService, IHostedServ
 
     public void RebuildSnapshot()
     {
-        // Build a fresh snapshot and persist it.
-        BuildSnapshotAsync(); // private method inside the same class
-        PersistSnapshotAsync(); // private method inside the same class
+        // 1️⃣  Flush the old in‑memory snapshot
+        _cache.Clear();
+        _hashCache.Clear();
+        _archiveLookup.Clear();
+        _sizeLookup.Clear();
+        //_failedAttempts.Clear();  // if you keep per‑user counters
+
+        // 2️⃣  Re‑build from disk again
+        BuildSnapshotAsync().Wait();          // synchronous – we already own the lock
+        PersistSnapshotAsync().Wait();        // same
         SnapshotRebuilt?.Invoke(this, EventArgs.Empty);
     }
     #endregion
@@ -602,7 +609,6 @@ public sealed class SnapshotService : IDisposable, ISnapshotService, IHostedServ
         var ext = Path.GetExtension(filePath).ToLowerInvariant();
         if (ext is not ".nsp" and not ".xci" and not ".xcz")
         {
-           
             // Open the NSP/XCI with LibHac and read the first stream.
             // The first stream is the first entry returned by GetContentInfos().
             try
@@ -612,12 +618,16 @@ public sealed class SnapshotService : IDisposable, ISnapshotService, IHostedServ
                 var first = reader.GetEntries().FirstOrDefault();
                 if (first == null) return ComputeFullHash(filePath);
 
-                return _nspExtractor.ExtractHashFromStream(first.Stream);
+                using var firstStream = first.Stream;
+                var hash = _nspExtractor.ExtractHashFromStream(firstStream);
+                return hash;
             }
             catch
             {
                 // On error, fall back to the full file hash
-                return ComputeFullHash(filePath);
+                using var fs = new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.Read);
+                var ncaMetadataWithHash = _nspExtractor.ExtractFromStream(fs);
+                return ncaMetadataWithHash?.Hash ?? string.Empty;
             }
         }
         else