Remove markdown test docs and document tests inline

packages/inbox-runtime/internal/cli/inbox/reply_integration_test.go

@@ -6,6 +6,7 @@ import (
 	"testing"
 )
 
+// TestReplyAddsAnswerMessage verifies reply appends an answer message to the thread.
 func TestReplyAddsAnswerMessage(t *testing.T) {
 	t.Parallel()
 
@@ -37,6 +38,7 @@ func TestReplyAddsAnswerMessage(t *testing.T) {
 	}
 }
 
+// TestReplySupportsControlKind verifies reply accepts control messages in addition to answers.
 func TestReplySupportsControlKind(t *testing.T) {
 	t.Parallel()
 
@@ -63,6 +65,7 @@ func TestReplySupportsControlKind(t *testing.T) {
 	}
 }
 
+// TestReplyAttachesArtifact verifies reply persists an attached artifact on the reply message.
 func TestReplyAttachesArtifact(t *testing.T) {
 	t.Parallel()
 
@@ -115,6 +118,7 @@ func TestReplyAttachesArtifact(t *testing.T) {
 	}
 }
 
+// TestReplyRejectsInvalidPayloadJSON verifies reply returns invalid_input for malformed payload JSON.
 func TestReplyRejectsInvalidPayloadJSON(t *testing.T) {
 	t.Parallel()