update reconcile sigma script

[Yostra]

Summary

• Improves Sigma vs Postgres reconciliation by matching the sync engine's Stripe list API scope before reporting missing IDs.
• Adds livemode-aware filtering, table aliases/skips, retry/concurrency tuning, and a --table option for focused checks.
• Expands reports with skipped tables, missing samples, and IDs dropped because list endpoints do not return them.