diff --git a/NucleicRemote/NucleicRemote/Views/Transcript/TranscriptProjection.swift b/NucleicRemote/NucleicRemote/Views/Transcript/TranscriptProjection.swift
index 6b1a6ca..64ae655 100644
--- a/NucleicRemote/NucleicRemote/Views/Transcript/TranscriptProjection.swift
+++ b/NucleicRemote/NucleicRemote/Views/Transcript/TranscriptProjection.swift
@@ -321,7 +321,7 @@ enum TranscriptProjection {
     /// Maps each tool-call id to its parent subagent's id, built from the call start/complete
     /// events. A tool *result* or *file change* names only a tool id, so it inherits its subagent
     /// scope from the call it belongs to via this map.
-    private static func toolParentMap(_ events: [AgentEvent]) -> [String: String] {
+    private static func toolParentMap(_ events: ArraySlice<AgentEvent>) -> [String: String] {
         var map: [String: String] = [:]
         for event in events {
             switch event.kind {