Added a way to read what the AI received from your sources (#1100)

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

app/MindWork AI Studio/Tools/Databases/IndexStore/EmbeddingStateChunkEntity.cs

@@ -10,10 +10,68 @@ internal sealed class EmbeddingStateChunkEntity
 
     public int? PageNumber { get; set; }
 
+    public int? EndPageNumber { get; set; }
+
     public int ChunkIndex { get; set; }
 
     public string ChunkText { get; set; } = string.Empty;
 
+    /// <summary>
+    /// The hash of the chunk text, cf. ChunkTextHash, or null for a chunk stored before v26.10.1.
+    /// </summary>
+    /// <remarks>
+    /// Stored so that a document read again need not hash every old chunk text before it can tell
+    /// which vectors to keep. A chunk without it is hashed from its text instead.
+    /// </remarks>
+    public string? TextHash { get; set; }
+
+    /// <summary>
+    /// How many times the document was indexed before this chunk was written, cf. IndexedDocumentIds.CreateChunkIdSource.
+    /// </summary>
+    /// <remarks>
+    /// The chunk id includes it, so a document indexed again never overwrites its old chunks with
+    /// new ones, even where its fingerprint stays the same, as a mail's does. Chunks stored before
+    /// v26.10.1 are generation 0.
+    /// </remarks>
+    public int Generation { get; set; }
+
+    /// <summary>
+    /// The sheet the chunk is from, or null when its document has no sheets or the chunk was stored before v26.10.1.
+    /// </summary>
+    /// <remarks>
+    /// A chunk never runs from one sheet into the next, cf. TextChunker.SplitBySheets. The location
+    /// columns hold what the runtime states about the pieces of a document. A chunk stored before
+    /// they existed keeps NULL in all of them, which reads as unknown, and gains them once its
+    /// document is indexed again.
+    /// </remarks>
+    public string? SheetName { get; set; }
+
+    /// <summary>
+    /// The row of its sheet the chunk starts at, counted from one as a spreadsheet program counts it.
+    /// </summary>
+    public int? StartRow { get; set; }
+
+    /// <summary>
+    /// The row of its sheet the chunk ends at.
+    /// </summary>
+    public int? EndRow { get; set; }
+
+    /// <summary>
+    /// The line the chunk starts at, for text, CSV and source code, counted from one.
+    /// </summary>
+    public int? StartLine { get; set; }
+
+    /// <summary>
+    /// The line the chunk ends at.
+    /// </summary>
+    public int? EndLine { get; set; }
+
+    /// <summary>
+    /// Which attachment of a mail the chunk is from, as mail_parts numbers the attachments of a
+    /// mail, or null for the text of the mail itself and for every chunk of a file.
+    /// </summary>
+    public int? AttachmentPosition { get; set; }
+
     public DateTimeOffset EmbeddedAtUtc { get; set; }
 
     public EmbeddingStateFileEntity? File { get; set; }