feat(cover): add new cover and decrease content image size

src/content/journal/2007/koi-design.mdx

@@ -42,10 +42,7 @@ In addition to gods, mythical creatures, and demons, the most important source o
 
 ## Water Margin
 
-<Figure
-  caption="Motif from Suikoden by Kuniyoshi: Captain Lu-Ta, the flowery monk, smashes a tree with a blow to impress a gang of good-for-nothings."
-  size="wide"
->
+<Figure caption="Motif from Suikoden by Kuniyoshi: Captain Lu-Ta, the flowery monk, smashes a tree with a blow to impress a gang of good-for-nothings.">
   <Image src="/assets/images/posts/suikoden-luta.webp" alt="Woodblock print of a Chinese Monk" />
 </Figure>
 
@@ -60,8 +57,8 @@ The motif I chose for my design shows a koi (carp) trying to swim up the heavy r
 Legend has it that a koi, who manages to swim up the magical waterfalls, transforms into a dragon. After another 500 years, he turns into a horned dragon and after 1000 years into a winged dragon. Thus, the next design should show a dragon.
 
 <Figure
-  caption="Koi floating up the Longmen Waterfalls. It contains typical elements such as leaves, flowers, and wave crests."
-  size="fullsize"
+  caption="Koi floating up the Longmen Waterfalls. It contains typical elements such as leaves, flowers, and wave crests (AI upscaled from a pixel image)."
+  size="wide"
 >
   <Image src="/assets/images/posts/design-koi.png" format="avif" alt="Design: Digital Irezumi" />
 </Figure>