Refactor clawx (#344)

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

electron/api/routes/app.ts

@@ -0,0 +1,32 @@
+import type { IncomingMessage, ServerResponse } from 'http';
+import type { HostApiContext } from '../context';
+import { setCorsHeaders, sendNoContent } from '../route-utils';
+
+export async function handleAppRoutes(
+  req: IncomingMessage,
+  res: ServerResponse,
+  url: URL,
+  ctx: HostApiContext,
+): Promise<boolean> {
+  if (url.pathname === '/api/events' && req.method === 'GET') {
+    setCorsHeaders(res);
+    res.writeHead(200, {
+      'Content-Type': 'text/event-stream; charset=utf-8',
+      'Cache-Control': 'no-cache, no-transform',
+      Connection: 'keep-alive',
+    });
+    res.write(': connected\n\n');
+    ctx.eventBus.addSseClient(res);
+    // Send a current-state snapshot immediately so renderer subscribers do not
+    // miss lifecycle transitions that happened before the SSE connection opened.
+    res.write(`event: gateway:status\ndata: ${JSON.stringify(ctx.gatewayManager.getStatus())}\n\n`);
+    return true;
+  }
+
+  if (req.method === 'OPTIONS') {
+    sendNoContent(res);
+    return true;
+  }
+
+  return false;
+}