PERFORMANCE — Centralize and memoize AES-256-GCM encryption helpers

[prakshithamalla-art]

Problem

The application processes environment variables using individual crypto hooks or duplicate local instances. Centralizing the crypto library allocations with clean error boundaries ensures mismatched keys do not silently break sandbox deployments.

Proposed Solution

Refactor lib/crypto.ts to ensure strict environment variable validation for ENCRYPTION_KEY at runtime initialization and implement explicit data serialization catches for the payload delivery.

File(s) to Modify

• lib/crypto.ts
• app/api/secrets/route.ts

I want to work on this issue. Please assign it to me.