Add syntax highlighting, support draft posts

pages/layout.rb

@@ -34,6 +34,7 @@ module Pages
           meta(charset: "utf-8")
           meta(name: "viewport", content: "width=device-width, initial-scale=1.0")
           link(rel: "stylesheet", href: "/tailwind.css")
+          link(rel: "stylesheet", href: "/prism/prism.css")
 
           script(defer: true, 'data-domain' => "farthergate.com", src: "https://plausible.farthergate.com/js/script.js")
 
@@ -65,6 +66,8 @@ module Pages
             p { "built with phlexite and tailwindcss" }
             p { "© #{Time.now.year} Aleks Rūtiņš" }
           }
+
+          script(src: "/prism/prism.js")
         }
       }
     end

pages/post.rb

@@ -8,7 +8,14 @@ class Pages::Post < ::Phlex::HTML
     render ::Pages::Layout.new({title: meta['title']}) {
       article(class: 'prose prose-lg m-auto') {
         h1 { meta['title'] }
-        time(datetime: meta['published_on']) { meta['published_on'] }
+        if meta['published_on']
+          time(datetime: meta['published_on']) { meta['published_on'] }
+        else
+          div(class: 'flex flex-row gap-2 -my-5 items-center') {
+            raw safe(::Util::Heroicons.pencil_square('size-4 block'))
+            p { 'Draft' }
+          }
+        end
 
         hr