fix(voicewake): avoid crash on foreign transcript ranges

Swabble/Sources/SwabbleKit/WakeWordGate.swift

@@ -106,20 +106,14 @@ public enum WakeWordGate {
         triggerEndTime: TimeInterval)
     -> String {
         let threshold = triggerEndTime + 0.001
+        var commandWords: [String] = []
+        commandWords.reserveCapacity(segments.count)
         for segment in segments where segment.start >= threshold {
-            if normalizeToken(segment.text).isEmpty { continue }
-            if let range = segment.range {
-                let slice = transcript[range.lowerBound...]
-                return String(slice).trimmingCharacters(in: Self.whitespaceAndPunctuation)
-            }
-            break
+            let normalized = normalizeToken(segment.text)
+            if normalized.isEmpty { continue }
+            commandWords.append(segment.text)
         }
-
-        let text = segments
-            .filter { $0.start >= threshold && !normalizeToken($0.text).isEmpty }
-            .map(\.text)
-            .joined(separator: " ")
-        return text.trimmingCharacters(in: Self.whitespaceAndPunctuation)
+        return commandWords.joined(separator: " ").trimmingCharacters(in: Self.whitespaceAndPunctuation)
     }
 
     public static func matchesTextOnly(text: String, triggers: [String]) -> Bool {