fix(console-log): initialize capture at server boot + prevent SSE proxy buffering

Initialize initConsoleLogCapture() via Next.js instrumentation register()
hook so logs are captured from startup in headless/Docker deployments, and
add X-Accel-Buffering/Cache-Control headers to the SSE stream route to
prevent reverse proxies from buffering the initial payload.

src/app/api/translator/console-logs/stream/route.js

@@ -83,8 +83,9 @@ export async function GET(request) {
   return new Response(stream, {
     headers: {
       "Content-Type": "text/event-stream",
-      "Cache-Control": "no-cache",
+      "Cache-Control": "no-cache, no-transform",
       "Connection": "keep-alive",
+      "X-Accel-Buffering": "no",
     },
   });
 }

src/instrumentation.js

@@ -0,0 +1,6 @@
+export async function register() {
+  if (process.env.NEXT_RUNTIME === "nodejs") {
+    const { initConsoleLogCapture } = await import("@/lib/consoleLogBuffer");
+    initConsoleLogCapture();
+  }
+}