fix(capture): honor context during replay sleeps

adb_test.go

@@ -1,6 +1,8 @@
 package adb
 
 import (
+	"context"
+	"errors"
 	"net"
 	"reflect"
 	"testing"
@@ -238,6 +240,27 @@ func TestTapSequence_GetLength(t *testing.T) {
 	}
 }
 
+func TestSequenceSleep_PlayHonorsContextCancellation(t *testing.T) {
+	ctx, cancel := context.WithCancel(context.Background())
+	cancel()
+
+	start := time.Now()
+	err := (SequenceSleep{Duration: time.Second, Type: SeqSleep}).Play(Device{}, ctx)
+	if !errors.Is(err, context.Canceled) {
+		t.Fatalf("SequenceSleep.Play() error = %v, want context.Canceled", err)
+	}
+	if elapsed := time.Since(start); elapsed > 100*time.Millisecond {
+		t.Fatalf("SequenceSleep.Play() took %v after cancellation", elapsed)
+	}
+}
+
+func TestSequenceSleep_PlayCompletesAfterDuration(t *testing.T) {
+	err := (SequenceSleep{Duration: time.Millisecond, Type: SeqSleep}).Play(Device{}, context.Background())
+	if err != nil {
+		t.Fatalf("SequenceSleep.Play() error = %v, want nil", err)
+	}
+}
+
 func TestTapSequence_JSONRoundTrip(t *testing.T) {
 	now := time.UnixMilli(1700000000000)
 	original := TapSequence{

capture.go

@@ -71,9 +71,15 @@ type SequenceSleep struct {
 }
 
 func (s SequenceSleep) Play(d Device, ctx context.Context) error {
-	// TODO check if context is expired
-	time.Sleep(s.Duration)
-	return nil
+	timer := time.NewTimer(s.Duration)
+	defer timer.Stop()
+
+	select {
+	case <-ctx.Done():
+		return ctx.Err()
+	case <-timer.C:
+		return nil
+	}
 }
 
 func (s SequenceSleep) Length() time.Duration {