Persistent thread mapping, and persistent state for order/fulfillment data

Scheduled cleanup to purge thread/state options based on TTL and terminal grace period.

Interaction buttons no longer lose context after cache clears or restarts (state is persisted).

Eliminated concurrent creation of duplicate threads for the same order via an atomic lock.

Thread creation flow performs in-lock recheck and sends the initial message only once.

1.1.0 - 7th October 2025

SyncPA