Replace plain page headings with a terminal-style, PageHeader component

src/components/PageHeader.astro

@@ -0,0 +1,64 @@
+---
+interface Props {
+  /** Shell-style path shown as the heading, e.g. "~/projects" */
+  path: string;
+  /** Command echoed under the heading, without the "$ " prompt */
+  command?: string;
+  /** Heading level; pages with their own <h1> elsewhere should stay at 2 */
+  level?: 1 | 2;
+}
+const { path, command, level = 2 } = Astro.props;
+const Heading = level === 1 ? "h1" : "h2";
+---
+
+<style>
+  .page-header {
+    margin-block-end: var(--stack-large);
+  }
+  .listing-line {
+    color: var(--color-mg);
+    font-size: var(--pt-small-pica);
+  }
+  .prompt-cursor {
+    margin-inline-start: 0.667em;
+    animation: blink 1.2s steps(1) infinite;
+    color: var(--color-accent);
+  }
+  @keyframes blink {
+    50% {
+      opacity: 0;
+    }
+  }
+
+  :root[data-reduce-motion="on"] .prompt-cursor {
+    animation: none;
+  }
+  @media (prefers-reduced-motion: reduce) {
+    :root:not([data-reduce-motion="off"]) .prompt-cursor {
+      animation: none;
+    }
+  }
+
+  :root[data-more-contrast="on"] .listing-line {
+    color: var(--color-fg);
+  }
+  @media (prefers-contrast: more) {
+    :root:not([data-more-contrast="off"]) .listing-line {
+      color: var(--color-fg);
+    }
+  }
+</style>
+
+<hgroup class="page-header">
+  <Heading>
+    {path}
+    <span class="prompt-cursor" aria-hidden="true">█</span>
+  </Heading>
+  {
+    command && (
+      <p class="listing-line" aria-hidden="true">
+        $ {command}
+      </p>
+    )
+  }
+</hgroup>

src/pages/contact.astro

@@ -1,5 +1,6 @@
 ---
 import Layout from "@layouts/BaseLayout.astro";
+import PageHeader from "@components/PageHeader.astro";
 import { actions, isInputError } from "astro:actions";
 export const prerender = false;
 
@@ -147,7 +148,7 @@ const msgValue = pickValue("msg") || (await Astro.session?.get("msg"));
     </style>
   </Fragment>
   <Fragment slot="main">
-    <h2>Contact</h2>
+    <PageHeader path="~/contact" command="mail badblocks" />
     {
       (nextAction != "complete" && (
         <form method="post" x-data="{}" action={actions.contact.submitForm}>

src/pages/license.astro

@@ -1,5 +1,6 @@
 ---
 import Layout from "@layouts/BaseLayout.astro";
+import PageHeader from "@components/PageHeader.astro";
 import fs from "node:fs";
 
 const txtToHtml = (string: string) => {
@@ -23,13 +24,11 @@ const license_file_contents = txtToHtml(
 <Layout>
   <title slot="head">LICENSE | badblocks.dev</title>
   <Fragment slot="main">
-    <header>
-      <h1>
-        <a href="https://opensource.org/license/mit" target="_blank"
-          >MIT License</a
+    <PageHeader path="~/license" command="cat LICENSE" level={1} />
+    <p>
+      <a href="https://opensource.org/license/mit" target="_blank">MIT License</a
       >
-      </h1>
-    </header>
+    </p>
     <div style="font-size: medium;" set:html={license_file_contents} />
   </Fragment>
 </Layout>

src/pages/tools.astro

@@ -1,5 +1,6 @@
 ---
 import Layout from "@layouts/BaseLayout.astro";
+import PageHeader from "@components/PageHeader.astro";
 ---
 
 <Layout>
@@ -15,7 +16,7 @@ import Layout from "@layouts/BaseLayout.astro";
   </style>
   <Fragment slot="main">
     <section class="tools" id="tools">
-      <h2>Tools</h2>
+      <PageHeader path="~/tools" command="ls" />
       <div class="tools-grid">
         <div class="tool-card">Tool 1</div>
         <div class="tool-card">Tool 2</div>