Remove markdown test docs and document tests inline

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

@@ -2,6 +2,7 @@ package inbox
 
 import "testing"
 
+// TestRenewExtendsActiveLease verifies renew extends active lease.
 func TestRenewExtendsActiveLease(t *testing.T) {
 	t.Parallel()
 
@@ -53,6 +54,7 @@ func TestRenewExtendsActiveLease(t *testing.T) {
 	}
 }
 
+// TestRenewRejectsNonOwner verifies renew rejects non owner.
 func TestRenewRejectsNonOwner(t *testing.T) {
 	t.Parallel()
 
@@ -82,6 +84,7 @@ func TestRenewRejectsNonOwner(t *testing.T) {
 	assertErrorJSON(t, stdout, "lease_conflict")
 }
 
+// TestRenewRejectsWithoutActiveLease verifies renew rejects without active lease.
 func TestRenewRejectsWithoutActiveLease(t *testing.T) {
 	t.Parallel()