fix: volume as number in front matter, add 404 page

_includes/layouts/edition.njk

@@ -29,7 +29,7 @@ layout: base
 <hr class="rule">
 
 <div class="dateline">
-  <span class="vol">Volume {{ volume_number | roman }}, Edition No. {{ edition_number }}</span>
+  <span class="vol">Volume {{ volume | roman }}, Edition No. {{ edition_number }}</span>
   <span class="place">Opelousas, Louisiana, {{ date | newsDate }}</span>
   <span class="price">Price 3 Acorns</span>
 </div>

content/404.md

@@ -0,0 +1,9 @@
+---
+layout: base
+title: "Page Not Found"
+permalink: /404.html
+---
+<div style="text-align:center; padding:3rem 1rem;">
+  <div class="banner">EXTRA! PAGE NOT FOUND</div>
+  <p style="font-style:italic; margin-top:1rem;">The article you seek was never filed, or the copy boy lost it. <a href="/">Return to today's edition</a>.</p>
+</div>

content/editions/2026-07-03/index.md

@@ -1,6 +1,6 @@
 ---
 layout: edition
-volume: I
+volume: 1
 edition_number: 1
 date: 2026-07-03
 status: published

content/editions/2026-07-04/index.md

@@ -1,6 +1,6 @@
 ---
 layout: edition
-volume: I
+volume: 1
 edition_number: 2
 date: 2026-07-04
 status: published

content/index.11tydata.js

@@ -2,6 +2,7 @@ module.exports = {
     eleventyComputed: {
         title: data => data.latest ? data.latest.data.title : "Printing Presses Warming Up",
         date: data => data.latest ? data.latest.date : new Date(),
-        edition_number: data => data.latest ? data.latest.data.edition_number : 0
+        edition_number: data => data.latest ? data.latest.data.edition_number : 0,
+        volume: data => data.latest ? data.latest.data.volume : 1
     }
 };