Added local RAG (#756)

Co-authored-by: Thorsten Sommer <SommerEngineering@users.noreply.github.com>

app/MindWork AI Studio/Tools/Services/DataSourceEmbeddingService.State.cs

@@ -0,0 +1,26 @@
+using AIStudio.Tools.Databases.IndexStore;
+using AIStudio.Tools.Databases.VectorStore;
+
+namespace AIStudio.Tools.Services;
+
+public sealed partial class DataSourceEmbeddingService
+{
+    private async Task ResetPersistedStateAsync(
+        string dataSourceId,
+        VectorStoreClient? vectorStore,
+        IndexStoreClient? indexStore,
+        CancellationToken token)
+    {
+        await this.DeleteCollectionAsync(DataSourceEmbeddingNames.GetCollectionName(dataSourceId), vectorStore, token);
+
+        indexStore ??= await databaseClientProvider.GetIndexStoreAsync(token);
+        if (!indexStore.IsAvailable)
+        {
+            logger.LogWarning("Could not delete local RAG embedding state for data source '{DataSourceId}' because the database '{DatabaseName}' is unavailable.", dataSourceId, indexStore.Name);
+            return;
+        }
+
+        await indexStore.DeleteDataSourceAsync(dataSourceId, token);
+        logger.LogInformation("Reset persisted local RAG embedding state for data source '{DataSourceId}'.", dataSourceId);
+    }
+}