feat: refactor play area into sidebar layout with buttplug, recordings, and leaderboard sub-pages

- Add /play sidebar layout (mobile nav + desktop sidebar) with SexyBackground
- Move buttplug device control to /play/buttplug with Empty component and scan button
- Move recordings from /me/recordings to /play/recordings
- Move leaderboard to /play/leaderboard; redirect /leaderboard → /play/leaderboard
- Redirect /me/recordings → /play/recordings and /play → /play/buttplug
- Remove recordings entry from /me sidebar nav
- Rename "SexyPlay" → "Play", swap bluetooth icon for rocket, remove subtitle
- Add play.nav i18n keys (play, recordings, leaderboard, back_to_site, back_mobile)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

packages/frontend/src/routes/play/leaderboard/+page.server.ts

@@ -0,0 +1,60 @@
+import type { PageServerLoad } from "./$types";
+import { gql } from "graphql-request";
+import { getGraphQLClient } from "$lib/api";
+
+const LEADERBOARD_QUERY = gql`
+  query Leaderboard($limit: Int, $offset: Int) {
+    leaderboard(limit: $limit, offset: $offset) {
+      user_id
+      display_name
+      avatar
+      total_weighted_points
+      total_raw_points
+      recordings_count
+      playbacks_count
+      achievements_count
+      rank
+    }
+  }
+`;
+
+export const load: PageServerLoad = async ({ fetch, url }) => {
+  try {
+    const limit = parseInt(url.searchParams.get("limit") || "100");
+    const offset = parseInt(url.searchParams.get("offset") || "0");
+
+    const client = getGraphQLClient(fetch);
+    const data = await client.request<{
+      leaderboard: {
+        user_id: string;
+        display_name: string | null;
+        avatar: string | null;
+        total_weighted_points: number | null;
+        total_raw_points: number | null;
+        recordings_count: number | null;
+        playbacks_count: number | null;
+        achievements_count: number | null;
+        rank: number;
+      }[];
+    }>(LEADERBOARD_QUERY, { limit, offset });
+
+    return {
+      leaderboard: data.leaderboard || [],
+      pagination: {
+        limit,
+        offset,
+        hasMore: data.leaderboard?.length === limit,
+      },
+    };
+  } catch (error) {
+    console.error("Leaderboard load error:", error);
+    return {
+      leaderboard: [],
+      pagination: {
+        limit: 100,
+        offset: 0,
+        hasMore: false,
+      },
+    };
+  }
+};