Refactored `VectorSearchService.cs` to use Dapper for DB operations, replacing raw ADO.NET commands. Updated methods for inserting, retrieving, and deleting documents and chunks. Modified vector search query to use Dapper's `QueryAsync`.
Updated `SqlDatabaseVectorSearch.csproj` to include Dapper package reference, version `2.1.35`.
- Updated `Scripts.sql` to add a new `[Index]` column to `[dbo].[DocumentChunks]` for order tracking.
- Modified `DocumentChunk.cs` to include a new `Index` property, and introduced a new immutable record class for document chunks.
- Introduced new API endpoints in `Program.cs` for document and chunk retrieval, including embedding details, with OpenAPI documentation enhancements.
- Updated an API endpoint description in `Program.cs` to clarify document embedding handling.
- Updated `VectorSearchService.cs` to reflect schema changes in service logic, adding methods for fetching document chunks and specific embeddings.
Marco Minerva