style tweaks: add OG meta tags and remove homepage registration banner

fonsp · fonsp · commit bbcbde01e2d3 · 2025-12-19T11:59:43.000+01:00
diff --git a/src/_includes/layout.jlhtml b/src/_includes/layout.jlhtml
@@ -3,13 +3,13 @@ $(begin
     "The contents of `<head>` from a Pluto HTML export."
     const pluto_head = let
         default = Pluto.generate_html(; 
-            pluto_cdn_root=Pluto.PLUTO_VERSION < v"0.19" ? "https://cdn.jsdelivr.net/gh/fonsp/Pluto.jl@9ca70c36/frontend/" : nothing)
+            version=PlutoSliderServer.try_get_exact_pluto_version(),
+        )
         m = match(r"<head.*?>(.*)</head>"s, default)
         reduce([
             # r"<script[^\n]data-pluto-file=[\"']?launch-parameters.*?/script>"s
             r"<title.*?/title>"
             r"<meta name=[\"']?description.*?>"
-            r"<meta name=[\"']?description.*?>"
             r"<link rel=[\"']?icon.*?>"
         ]; init=m[1]) do s,r
             replace(s, r => "")
@@ -29,12 +29,7 @@ $(begin
 end)<html lang="en">
 <head>
 
-<title>$(f("title", splitext(basename(page.input.relative_path))[1])) — Interactive Computational Thinking — MIT</title>
-$(let d = f("description", nothing)
-    if d !== nothing
-        @htl("""<meta name="description" content=$(d) />""")
-    end
-end)
+$(Pluto.frontmatter_html(page.output.frontmatter) |> HTML)
 
 <link rel="root" href="$(root_url)" />
 
diff --git a/src/_includes/welcome.md b/src/_includes/welcome.md
@@ -4,25 +4,6 @@ layout: "layout.jlhtml"
 
 <link rel="stylesheet" href="$(root_url)/assets/styles/homepage.css" type="text/css" />
 
-<div style="
-    background: white;
-    padding: 0.3em 1em;
-    border: 3px solid #b97777;
-    box-shadow: 0px 0px 10px #00000036;
-    z-index: 99999999;
-    position: relative;
-    font-size: 1.3rem;
-    color: black;
-">
-    <p><strong>MIT students:</strong> Sign up for the Fall 2024 edition of this class!</p><p>Register for <strong><code>18C25</code></strong>, <strong><code>6C25</code></strong>, etc: <br><em>"Julia: Solving Real-World Problems with Computation"</em> (<a href="https://student.mit.edu/catalog/search.cgi?search=computation+with+Julia&amp;style=verbatim&amp;when=C&amp;termleng=4&amp;days_offered=*&amp;start_time=*&amp;duration=*&amp;total_units=*" class="" style="
-    color: #6c6cca;
-    font-weight: bold;
-    text-decoration: underline;
-">catalog link</a>)</p>
-<p style="
-    opacity: .7;
-">Counts for course 6 and course 18 majors, etc.</p><p></p></div>
-
 <div id="title" class="banner">
     <h1>Julia: <strong>A Fresh Approach to Computing</strong></h1>
 </div>
