feat: Add centralized logging system with @link-stack/logger package

- Create new @link-stack/logger package wrapping Pino for structured logging
- Replace all console.log/error/warn statements across the monorepo
- Configure environment-aware logging (pretty-print in dev, JSON in prod)
- Add automatic redaction of sensitive fields (passwords, tokens, etc.)
- Remove dead commented-out logger file from bridge-worker
- Follow Pino's standard argument order (context object first, message second)
- Support log levels via LOG_LEVEL environment variable
- Export TypeScript types for better IDE support

This provides consistent, structured logging across all applications
and packages, making debugging easier and production logs more parseable.

apps/link/app/(main)/page.tsx

@@ -1,6 +1,9 @@
 import { Metadata } from "next";
 import { redirect } from "next/navigation";
 import { Home } from "./_components/Home";
+import { createLogger } from "@link-stack/logger";
+
+const logger = createLogger('link-page');
 // import { getServerSession } from "app/_lib/authentication";
 // import { Home } from "@link-stack/leafcutter-ui";
 // import { getUserVisualizations } from "@link-stack/opensearch-common";
@@ -28,7 +31,7 @@ export default async function Page() {
   try {
     visualizations = await getUserVisualizations(email ?? "none", 20);
   } catch (e) {
-    console.error(e.meta);
+    logger.error({ meta: e.meta }, "Error metadata");
   }
 
   return (