fix(start): register /stream SSE route in CLI start command

The SSE endpoint was only wired in index.ts, not in start.ts (the CLI
'marionette start' path). The catch-all app.get("*") was intercepting
GET /stream and returning index.html, causing the dashboard EventSource
to receive text/html instead of text/event-stream.

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

Author: yarin-mag

apps/server/src/cli/start.ts

@@ -32,7 +32,7 @@ export async function start(): Promise<void> {
 
   const server = app.listen(config.port, () => {
     logger.info(`Server listening on http://localhost:${config.port}`);
-    logger.info(`WebSocket: ws://localhost:${config.port}/stream`);
+    logger.info(`SSE stream: http://localhost:${config.port}/stream`);
   });
 
   const agentService = new AgentService();
@@ -43,6 +43,7 @@ export async function start(): Promise<void> {
   wsService.start();
 
   app.use("/api", createApiRoutes(wsService, commandService, eventService));
+  app.get("/stream", (req, res) => wsService.handleSseConnection(req, res));
 
   // Serve bundled React app
   const webDist = process.env.WEB_DIST ?? resolve(distDir, "../web");