changed to sqlite connection to ef core

app/MindWork AI Studio/Tools/Databases/EmbeddingState/EmbeddingStateSchemaMigrator.cs

@@ -0,0 +1,15 @@
+using System.Diagnostics.CodeAnalysis;
+
+using Microsoft.EntityFrameworkCore;
+
+namespace AIStudio.Tools.Databases.EmbeddingState;
+
+internal static class EmbeddingStateSchemaMigrator
+{
+    [DynamicDependency(DynamicallyAccessedMemberTypes.All, typeof(Migrations.InitialRagIndex))]
+    public static async Task MigrateAsync(EmbeddingStateDbContext context, CancellationToken token)
+    {
+        await context.Database.MigrateAsync(token);
+        await context.Database.ExecuteSqlRawAsync("PRAGMA journal_mode=WAL;", token);
+    }
+}