new file structure

inc/background.secret_lab.go

@@ -0,0 +1,14 @@
+package inc
+
+import (
+	inkwell "git.teletypegames.org/engines/inkwell"
+)
+
+// secretLab — deck 15.
+func backgroundSecretLab() inkwell.Asset {
+	return inkwell.Asset{
+		Name: BgSecretLab,
+		Path: "assets/bg/secret_lab.png",
+		Kind: inkwell.AssetImage,
+	}
+}