chore: Introduce Qodana static analysis configuration and apply minor code formatting and C# 12 collection expressions.

Core/HistoryManager.cs

@@ -36,7 +36,7 @@ public class HistoryManager : IHistoryManager
             };
 
             var json = JsonSerializer.Serialize(entry, CompactJsonSerializerContext.Default.HistoryEntry);
-            
+
             // Thread-safe append
             lock (HistoryFile)
             {
@@ -67,7 +67,7 @@ public class HistoryManager : IHistoryManager
                 if (string.IsNullOrWhiteSpace(line)) continue;
                 if (!line.Trim().StartsWith("{") || !line.Trim().EndsWith("}")) continue; // Skip malformed old multiline json entries
 
-                try 
+                try
                 {
                     var entry = JsonSerializer.Deserialize(line, CompactJsonSerializerContext.Default.HistoryEntry);
                     if (entry != null)
@@ -75,7 +75,7 @@ public class HistoryManager : IHistoryManager
                         entries.Add(entry);
                     }
                 }
-                catch 
+                catch
                 {
                     // Skip entry if deserialization fails
                 }