TrueNAS 26 rewrites cloud_backup from async to sync. Every block the nested module injects is an async wrapper around an awaited original, so on 26 it hands sync.py a coroutine where it unpacks a tuple. tools/compat.py records what each module assumes and checks it two ways: CI runs it against iX's source at every release line (including master and the current BETA) and files a bug report when an unreleased line breaks; apply.sh runs it against the middlewared actually installed and refuses to apply a module whose assumptions no longer hold. Stock TrueNAS without a feature beats TrueNAS with a broken one. Workflows run on both forges; only the release/issue API calls differ.