feat: dynamic ish terminal preview

test/post-terminal-preview-layout.test.js

@@ -0,0 +1,10 @@
+import test from "node:test";
+import assert from "node:assert/strict";
+import fs from "node:fs";
+import path from "node:path";
+
+const postLayout = fs.readFileSync(path.resolve("src/_includes/layouts/post.njk"), "utf-8");
+
+test("Post layout: omits the leading terminal preview from the public article body", () => {
+  assert.match(postLayout, /content\s*\|\s*removeTerminalPreview\s*\|\s*safe/);
+});