Refactor clawx (#344)

Co-authored-by: ashione <skyzlxuan@gmail.com>

electron/api/routes/usage.ts

@@ -0,0 +1,20 @@
+import type { IncomingMessage, ServerResponse } from 'http';
+import { getRecentTokenUsageHistory } from '../../utils/token-usage';
+import type { HostApiContext } from '../context';
+import { sendJson } from '../route-utils';
+
+export async function handleUsageRoutes(
+  req: IncomingMessage,
+  res: ServerResponse,
+  url: URL,
+  _ctx: HostApiContext,
+): Promise<boolean> {
+  if (url.pathname === '/api/usage/recent-token-history' && req.method === 'GET') {
+    const parsedLimit = Number(url.searchParams.get('limit') || '');
+    const limit = Number.isFinite(parsedLimit) ? Math.max(Math.floor(parsedLimit), 1) : undefined;
+    sendJson(res, 200, await getRecentTokenUsageHistory(limit));
+    return true;
+  }
+
+  return false;
+}