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]>

sentry.edge.config.ts

@@ -0,0 +1,16 @@
+import * as Sentry from "@sentry/nextjs";
+import { redactSentryEvent } from "@/lib/sentry-redact";
+
+const dsn = process.env.SENTRY_DSN;
+
+if (dsn) {
+	Sentry.init({
+		dsn,
+		environment: process.env.NODE_ENV,
+		release: process.env.APP_VERSION,
+		tracesSampleRate: process.env.NODE_ENV === "production" ? 0.1 : 1.0,
+		enabled: process.env.NODE_ENV === "production",
+		ignoreErrors: ["AbortError", "NEXT_REDIRECT", "NEXT_NOT_FOUND"],
+		beforeSend: redactSentryEvent,
+	});
+}