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.

packages/opensearch-common/lib/opensearch.ts

@@ -1,6 +1,9 @@
 /* eslint-disable no-underscore-dangle */
 import { Client } from "@opensearch-project/opensearch";
 import { v4 as uuid } from "uuid";
+import { createLogger } from "@link-stack/logger";
+
+const logger = createLogger('opensearch-common-opensearch');
 
 /* Common */
 
@@ -284,7 +287,7 @@ export const updateUserVisualization = async (
     });
   } catch (e) {
     // eslint-disable-next-line no-console
-    console.error({ e });
+    logger.error({ e });
   }
 
   return id;