diff --git a/.github/.ci-trigger-marker b/.github/.ci-trigger-marker
new file mode 100644
index 00000000..7573e8aa
--- /dev/null
+++ b/.github/.ci-trigger-marker
@@ -0,0 +1,6 @@
+# CI re-trigger marker
+# Touched 2026-05-08 to fire Tests + Nix workflows after operator host
+# disk pressure relief (99% → 79%). Last run had ENOSPC errors that
+# masked which test failures are real vs env-induced.
+#
+# Safe to delete after confirming a clean run.