Every migration, one file

Dataset, corridor, row count, and where each one stands in the crossing.

#	Dataset	Corridor	Rows	Status
#1029	Subscriber list + campaign history	Mailchimp → Klaviyo	48,112	Run
#1031	Product catalog + order history	Shopify → Medusa	12,480	Mapping
#1024	Stored payment methods	Stripe → Spreedly	9,800	Complete