Add production observability: Sentry, pino, and sharp badge encoding.

Sentry is opt-in via DSN env vars; logger uses structured pino JSON in prod; badge uploads are normalized to GIF with sharp.

Co-authored-by: Cursor <[email protected]>

src/instrumentation.ts

@@ -0,0 +1,12 @@
+import * as Sentry from "@sentry/nextjs";
+
+export async function register() {
+	if (process.env.NEXT_RUNTIME === "nodejs") {
+		await import("../sentry.server.config");
+	}
+	if (process.env.NEXT_RUNTIME === "edge") {
+		await import("../sentry.edge.config");
+	}
+}
+
+export const onRequestError = Sentry.captureRequestError;