switch to directly importing post, and install static adapter

src/routes/[slug].svelte

@@ -3,18 +3,18 @@
         let post = await import(`./_posts/${page.params.slug}.svx`);
         return {
             props: {
-                metadata: post.metadata,
-                BlogPost: post.default
+                meta: post.metadata,
+                body: post.default
             }
         }
     }
 </script>
 
 <script>
-    export let metadata, BlogPost;
+    export let meta, body;
 </script>
 
 <div id="post">
-    <h1>{metadata.title}</h1>
-    <svelte:component this={BlogPost} />
+    <h1>{meta.title}</h1>
+    <svelte:component this={body} />
 </div>