stabilizaiton work - projects rework for maintenanceability and ui livening

src/__Libraries/StellaOps.Provcache/ChunkMetadata.cs

@@ -0,0 +1,34 @@
+using System;
+
+namespace StellaOps.Provcache;
+
+/// <summary>
+/// Metadata for a single chunk (no blob).
+/// </summary>
+public sealed record ChunkMetadata
+{
+    /// <summary>
+    /// Chunk identifier.
+    /// </summary>
+    public required Guid ChunkId { get; init; }
+
+    /// <summary>
+    /// Zero-based index.
+    /// </summary>
+    public required int Index { get; init; }
+
+    /// <summary>
+    /// SHA256 hash for verification.
+    /// </summary>
+    public required string Hash { get; init; }
+
+    /// <summary>
+    /// Size in bytes.
+    /// </summary>
+    public required int Size { get; init; }
+
+    /// <summary>
+    /// Content type.
+    /// </summary>
+    public required string ContentType { get; init; }
+}