Support Migration Checklist Agent

Software migrations go wrong when prerequisites are skipped, such as a setting, a permission or a data clean-up. Customers then hit errors halfway through and support has to roll back. This agent reads the account configuration and walks the prerequisite list in strict dependency order. For each prerequisite it looks for evidence that it is met. When one is missing, it creates an internal task for it and holds everything that depends on it until the evidence arrives. Unsupported settings are flagged before any preparation starts. Once every prerequisite is met, it prepares the migration tasks. The migration lead approves execution; the agent never runs the migration itself. Edge case: a prerequisite marked done without evidence, such as a ticket closed with no log, is treated as not met.