Refactor export-user-data, notify-user-submission-status, and resend-deletion-code to use createEdgeFunction wrapper. Remove manual CORS, auth, rate limiting boilerplate; adopt standardized EdgeFunctionContext (supabase, user, span, requestId), and integrate built-in tracing, rate limiting, and logging through the wrapper. Update handlers to rely on wrapper context and ensure consistent error handling and observability.
Consolidate CORS handling by introducing a shared supabase/functions/_shared/cors.ts and migrate edge functions to import from it. Remove inline cors.ts usage across functions, standardize headers (including traceparent and x-request-id), and prepare for environment-aware origins.