Differences from upstream

msi-core is based on the MSI of Magento 2.4.9, synced with magento/inventory develop, and keeps the original Magento_Inventory* module names and Magento\Inventory* namespaces.

Features

	Upstream MSI	msi-core
Default Stock	a MySQL view over cataloginventory_stock_status, special-cased in about fifty places	an ordinary stock, indexed by MSI
Stock item configuration	cataloginventory_stock_item	inventory_stock_item_configuration
Legacy cataloginventory_* tables	written on every stock change	frozen; writes are reported
Reservations	per stock	per source, opt-in
Place-order lock	per stock, around place-order	per source, around the reservation write, only for SKUs that get a reservation
Ledger repair	inventory:reservation:create-compensations	plus reconciliation and oversell detection
Salable quantity in the admin	one figure per stock	broken down by source
Stock change history	none	every source item change recorded
Storefront availability	in stock or out of stock	an Availability panel, opt-in

Fixes

Curated fixes are applied on top of the baseline. Cherry-picked upstream commits keep their original subject and carry a [picked #NNNN] marker. The changelog lists every fix with the release that carries it.

Removed modules

• InventoryRequisitionList is removed: it is proprietary and not covered by the OSL-3.0 / AFL-3.0 open source license.
• InventoryLogging is removed: it targets the Adobe Commerce Magento_Logging module and is excluded from the upstream Open Source metapackage, so shipping it would break setup:di:compile on Magento Open Source.

Packaging

msi-core uses Composer’s replace directive to provide the 73 open-source MSI modules that ship with Magento, plus its own modules, for both the magento/* and the mage-os/* package names. It pins magento/framework to its target line and declares a conflict on jeanmarcos/inventory.