diff --git a/.mintignore b/.mintignore
new file mode 100644
index 00000000..924fca3a
--- /dev/null
+++ b/.mintignore
@@ -0,0 +1,5 @@
+# Internal authoring guidance is not public product documentation.
+CLAUDE.md
+
+# Coding-agent test definitions and helpers are repository infrastructure.
+tests/