Add simple stats

public/robots.txt

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+User-agent: *
+Disallow: /stats

src/pages/stats.astro

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+---
+import { db } from "../db";
+
+export const prerender = false;
+
+const query = db.selectFrom("letters").select(({ fn }) => [fn.count("id").as("count")]);
+
+const [totalSubmissions] = await query.execute();
+const [confirmedSubmissions] = await query.where("confirmed", "=", 1).execute();
+
+const submissionsByLanguage = await db
+  .selectFrom("letters")
+  .groupBy("language")
+  .select(({ fn }) => ["language", fn.count("id").as("count")])
+  .orderBy("count", "desc")
+  .execute();
+---
+
+<div>
+  <p>Total submissions: {totalSubmissions.count}</p>
+  <p>Confirmed submissions: {confirmedSubmissions.count}</p>
+
+  <table>
+    <thead>
+      <tr>
+        <th>Lang</th>
+        <th>Submissions</th>
+      </tr>
+    </thead>
+    <tbody>
+      {
+        submissionsByLanguage.map((row) => (
+          <tr>
+            <th class="text-left">{row.language}</th>
+            <th class="text-right">{row.count}</th>
+          </tr>
+        ))
+      }
+    </tbody>
+  </table>
+</div>