feat: initial commit

test/testutil/fake_speech_transcriber.go

@@ -0,0 +1,14 @@
+package testutil
+
+import "context"
+
+type FakeSpeechTranscriber struct {
+	Transcript string
+	Error      error
+	CallCount  int
+}
+
+func (f *FakeSpeechTranscriber) Transcribe(_ context.Context, _ []byte, _ string) (string, error) {
+	f.CallCount++
+	return f.Transcript, f.Error
+}