rename TranscriptionAdapter to BatchAdapter, add StreamingAdapter interface

internal/transcriber/streaming.go

@@ -0,0 +1,25 @@
+package transcriber
+
+import "context"
+
+// TranscriptionResult represents a single transcription result from a streaming adapter
+type TranscriptionResult struct {
+	Text    string // the transcription text (partial or final)
+	IsFinal bool   // true if this is a final result, false for interim results
+	Error   error  // non-nil if an error occurred
+}
+
+// StreamingAdapter interface for streaming transcription backends (send audio in real-time)
+type StreamingAdapter interface {
+	// Start initiates the streaming connection with the given language setting
+	Start(ctx context.Context, language string) error
+
+	// SendChunk sends a chunk of audio data to the transcription service
+	SendChunk(audio []byte) error
+
+	// Results returns a channel that receives transcription results (partial and final)
+	Results() <-chan TranscriptionResult
+
+	// Close gracefully closes the streaming connection
+	Close() error
+}