feat: web UI chat render, panels, presence + analytics

frontend/src/lib/components/settings/About.svelte

@@ -0,0 +1,46 @@
+<script lang="ts">
+  const appVersion = "0.0.1";
+</script>
+
+<div class="about">
+  <div class="title">Beavergram</div>
+  <div class="line">Версия {appVersion}</div>
+  <div class="line">Лицензия GPL-3.0</div>
+  <a
+    class="line link"
+    href="https://github.com/Ajaxy/telegram-tt"
+    target="_blank"
+    rel="noopener"
+  >
+    UI портирован из Telegram A
+  </a>
+</div>
+
+<style lang="scss">
+  .about {
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+    gap: 0.375rem;
+
+    padding: 1.5rem 1rem;
+
+    font-size: 0.875rem;
+    color: var(--color-text-secondary);
+  }
+
+  .title {
+    font-size: 1rem;
+    font-weight: var(--font-weight-medium);
+    color: var(--color-text);
+  }
+
+  .link {
+    color: var(--color-primary);
+    text-decoration: none;
+
+    &:hover {
+      text-decoration: underline;
+    }
+  }
+</style>