Upgrade Qdrant Edge to 0.8.0 and make unreadable vector stores repairable (#982)

app/MindWork AI Studio/Tools/Databases/VectorStore/VectorStoreUnreadableException.cs

@@ -0,0 +1,13 @@
+namespace AIStudio.Tools.Databases.VectorStore;
+
+/// <summary>
+/// Thrown when a vector store is there on disk, but cannot be opened.
+/// </summary>
+/// <remarks>
+/// Separate from every other database failure, because it is the one which no retry heals and which
+/// the app must not heal on its own: building the index anew sends every document to the embedding
+/// provider once more, which costs real money and, for a large data source, hours. So this failure
+/// travels as its own type up to the places which can say so and offer the rebuild, and the decision
+/// stays with the user.
+/// </remarks>
+public sealed class VectorStoreUnreadableException(string message) : Exception(message);