Fix sharp in container, add admin downloads and anchor mark

- ship libvips with the runtime image so POST /api/v1/media stops failing
- admin downloads openapi.json and the style guide via session, no token
- copy rows for both API addresses
- anchor mark in the wordmark and a favicon

src/app/icon.svg

@@ -0,0 +1,14 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 32 32" width="32" height="32">
+	<rect width="32" height="32" fill="#14161a" />
+	<g
+		transform="translate(4 4)"
+		fill="none"
+		stroke="#f2f1ec"
+		stroke-width="2"
+		stroke-linecap="round"
+		stroke-linejoin="round"
+	>
+		<path d="M12 9v12m-8 -8a8 8 0 0 0 16 0m1 0h-2m-14 0h-2" />
+		<path d="M9 6a3 3 0 1 0 6 0a3 3 0 1 0 -6 0" />
+	</g>
+</svg>