Rename Postgres tables for better recognition and add additional routes in web app

web-app/src/routes/(authenticated)/account/+page.svelte

@@ -0,0 +1,51 @@
+<script lang="ts">
+  import { enhance } from "$app/forms";
+
+  const { data, form } = $props();
+</script>
+
+<section>
+  <h2>Overview</h2>
+
+  <p>
+    <strong>Username:</strong>
+    {data.user.username}
+  </p>
+  <p>
+    <strong>ID:</strong>
+    {data.user.id}
+  </p>
+</section>
+
+<section>
+  <h2>Logout</h2>
+
+  {#if form?.logout?.success}
+    <p>Successfully logged out</p>
+  {/if}
+
+  <form method="POST" action="?/logout" use:enhance>
+    <button type="submit">Logout</button>
+  </form>
+</section>
+
+<section>
+  <h2>Delete account</h2>
+
+  {#if form?.deleteAccount?.success}
+    <p>Account was deleted</p>
+  {/if}
+
+  {#if form?.deleteAccount?.success === false}
+    <p>{form.deleteAccount.message}</p>
+  {/if}
+
+  <form method="POST" action="?/deleteAccount" use:enhance>
+    <label>
+      Password
+      <input type="password" name="password" required />
+    </label>
+
+    <button type="submit">Delete account</button>
+  </form>
+</section>