1 files changed, 20 insertions, 0 deletions
diff --git a/internal/validate/shipped_data_test.go b/internal/validate/shipped_data_test.go
new file mode 100644
index 0000000..9c5bef1
--- /dev/null
+++ b/internal/validate/shipped_data_test.go
@@ -0,0 +1,20 @@
+package validate
+
+import (
+	"path/filepath"
+	"testing"
+)
+
+// TestShippedDataHasNoUnknownFields guards the authored content tree against
+// misspelled or stale YAML keys: every data file is decoded with
+// KnownFields(true), so an unread key (like the old exit-level
+// set_player_flags or the legacy triggers key) fails CI instead of being
+// silently discarded at load time.
+func TestShippedDataHasNoUnknownFields(t *testing.T) {
+	dataDir := filepath.Join("..", "..", "data")
+	for _, issue := range validateKnownFields(dataDir) {
+		if issue.Level == "ERROR" {
+			t.Errorf("%s", issue.Message)
+		}
+	}
+}