Count both paths of a rename in the docs-only CI skip

src/ci-gate.test.ts

@@ -28,7 +28,11 @@ test("the commit-hash image is pushed even when the gate no-ops", () => {
 	assert.doesNotMatch(step("docker push"), /^\s*if:/m);
 });
 
-test("only *.md counts as docs, and a dirty working tree counts as changed", () => {
+test("only *.md counts as docs; a dirty tree and a rename both count as changed", () => {
 	assert.ok(gate.includes("\\.md$"), "the non-docs match is a *.md suffix test");
-	assert.match(gate, /git status --porcelain/, "uncommitted code can never be skipped over");
+	assert.match(gate, /git status --porcelain --no-renames/, "uncommitted code can never be skipped over");
+	// Rename detection hides the source path: `git mv src/app.ts notes.md` reads as the .md alone
+	// under --name-only, and as a single `R src/app.ts -> notes.md` line under --porcelain — so
+	// without --no-renames a deleted source file looks like docs and skips the gate.
+	assert.match(gate, /git diff --name-only --no-renames/, "a rename must list both of its paths");
 });