save changes

src/Signals/__Libraries/StellaOps.Signals.Ebpf/Schema/RuntimeCallEvent.cs

@@ -204,6 +204,42 @@ public sealed record ObservedCallPath
     public IReadOnlyList<ulong?>? BinaryOffsets { get; init; }
 }
 
+/// <summary>
+/// Metadata describing which BTF source was selected for probe loading.
+/// </summary>
+public sealed record RuntimeBtfSelection
+{
+    /// <summary>
+    /// Selected BTF source kind (kernel, external-vmlinux, split-btf, unsupported, unavailable).
+    /// </summary>
+    public required string SourceKind { get; init; }
+
+    /// <summary>
+    /// Absolute path of the selected BTF source.
+    /// </summary>
+    public string? SourcePath { get; init; }
+
+    /// <summary>
+    /// SHA-256 digest of the selected BTF source.
+    /// </summary>
+    public string? SourceDigest { get; init; }
+
+    /// <summary>
+    /// Deterministic reason for the selected source.
+    /// </summary>
+    public required string SelectionReason { get; init; }
+
+    /// <summary>
+    /// Kernel release used for BTF lookup.
+    /// </summary>
+    public required string KernelRelease { get; init; }
+
+    /// <summary>
+    /// Kernel architecture used for BTF lookup.
+    /// </summary>
+    public required string KernelArch { get; init; }
+}
+
 /// <summary>
 /// Summary of runtime signals collected for a container.
 /// </summary>
@@ -265,6 +301,11 @@ public sealed record RuntimeSignalSummary
     /// Combined hash of all observed paths for summary-level identity.
     /// </summary>
     public string? CombinedPathHash { get; init; }
+
+    /// <summary>
+    /// BTF source metadata selected for this runtime collection.
+    /// </summary>
+    public RuntimeBtfSelection? BtfSelection { get; init; }
 }
 
 /// <summary>