diff --git a/crates/headless/src/main.rs b/crates/headless/src/main.rs
index 5990508c..bfd7e24a 100644
--- a/crates/headless/src/main.rs
+++ b/crates/headless/src/main.rs
@@ -256,3 +256,5 @@ fn wait_for_interrupt() {
     use std::io::Read as _;
     let _ = std::io::stdin().read(&mut [0_u8]);
 }
+
+// Temporary CI scope probe; this branch is never merged.
diff --git a/docs/ci-scope-probe.md b/docs/ci-scope-probe.md
new file mode 100644
index 00000000..b189a6cd
--- /dev/null
+++ b/docs/ci-scope-probe.md
@@ -0,0 +1 @@
+Temporary documentation-only CI scope probe. This branch is never merged.