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The killer demo finally works: place a sales order, ship it, watch inventory drop. This chunk lands the two pieces that close the loop: the inventory movement ledger (the audit-grade history of every stock change) and the sales-order /ship endpoint that calls InventoryApi.recordMovement to atomically debit stock for every line. This is the framework's FIRST cross-PBC WRITE flow. Every earlier cross-PBC call was a read (CatalogApi.findItemByCode, PartnersApi.findPartnerByCode, InventoryApi.findStockBalance). Shipping inverts that: pbc-orders-sales synchronously writes to inventory's tables (via the api.v1 facade) as a side effect of changing its own state, all in ONE Spring transaction. What landed ----------- * New `inventory__stock_movement` table — append-only ledger (id, item_code, location_id FK, signed delta, reason enum, reference, occurred_at, audit cols). CHECK constraint `delta <> 0` rejects no-op rows. Indexes on item_code, location_id, the (item, location) composite, reference, and occurred_at. Migration is in its own changelog file (002-inventory-movement-ledger.xml) per the project convention that each new schema cut is a new file. * New `StockMovement` JPA entity + repository + `MovementReason` enum (RECEIPT, ISSUE, ADJUSTMENT, SALES_SHIPMENT, PURCHASE_RECEIPT, TRANSFER_OUT, TRANSFER_IN). Each value carries a documented sign convention; the service rejects mismatches (a SALES_SHIPMENT with positive delta is a caller bug, not silently coerced). * New `StockMovementService.record(...)` — the ONE entry point for changing inventory. Cross-PBC item validation via CatalogApi, local location validation, sign-vs-reason enforcement, and negative-balance rejection all happen BEFORE the write. The ledger row insert AND the balance row update happen in the SAME database transaction so the two cannot drift. * `StockBalanceService.adjust` refactored to delegate: it computes delta = newQty - oldQty and calls record(... ADJUSTMENT). The REST endpoint keeps its absolute-quantity semantics — operators type "the shelf has 47" not "decrease by 3" — but every adjustment now writes a ledger row too. A no-op adjustment (re-saving the same value) does NOT write a row, so the audit log doesn't fill with noise from operator clicks that didn't change anything. * New `StockMovementController` at `/api/v1/inventory/movements`: GET filters by itemCode, locationId, or reference (for "all movements caused by SO-2026-0001"); POST records a manual movement. Both protected by `inventory.stock.adjust`. * `InventoryApi` facade extended with `recordMovement(itemCode, locationCode, delta, reason: String, reference)`. The reason is a String in the api.v1 surface (not the local enum) so plug-ins don't import inventory's internal types — the closed set is documented on the interface. The adapter parses the string with a meaningful error on unknown values. * New `SHIPPED` status on `SalesOrderStatus`. Transitions: DRAFT → CONFIRMED → SHIPPED (terminal). Cancelling a SHIPPED order is rejected with "issue a return / refund flow instead". * New `SalesOrderService.ship(id, shippingLocationCode)`: walks every line, calls `inventoryApi.recordMovement(... -line.quantity reason="SALES_SHIPMENT" reference="SO:{order_code}")`, flips status to SHIPPED. The whole operation runs in ONE transaction so a failure on any line — bad item, bad location, would push balance negative — rolls back the order status change AND every other line's already-written movement. The customer never ends up with "5 of 7 lines shipped, status still CONFIRMED, ledger half-written". * New `POST /api/v1/orders/sales-orders/{id}/ship` endpoint with body `{"shippingLocationCode": "WH-MAIN"}`, gated by the new `orders.sales.ship` permission key. * `ShipSalesOrderRequest` is a single-arg Kotlin data class — same Jackson deserialization trap as `RefreshRequest`. Fixed with `@JsonCreator(mode = PROPERTIES) + @param:JsonProperty`. The trap is documented in the class KDoc. End-to-end smoke test (the killer demo) --------------------------------------- Reset Postgres, booted the app, ran: * Login as admin * POST /catalog/items → PAPER-A4 * POST /partners → CUST-ACME * POST /inventory/locations → WH-MAIN * POST /inventory/balances/adjust → quantity=1000 (now writes a ledger row via the new path) * GET /inventory/movements?itemCode=PAPER-A4 → ADJUSTMENT delta=1000 ref=null * POST /orders/sales-orders → SO-2026-0001 (50 units of PAPER-A4) * POST /sales-orders/{id}/confirm → status CONFIRMED * POST /sales-orders/{id}/ship body={"shippingLocationCode":"WH-MAIN"} → status SHIPPED * GET /inventory/balances?itemCode=PAPER-A4 → quantity=950 (1000 - 50) * GET /inventory/movements?itemCode=PAPER-A4 → ADJUSTMENT delta=1000 ref=null SALES_SHIPMENT delta=-50 ref=SO:SO-2026-0001 Failure paths verified: * Re-ship a SHIPPED order → 400 "only CONFIRMED orders can be shipped" * Cancel a SHIPPED order → 400 "issue a return / refund flow instead" * Place a 10000-unit order, confirm, try to ship from a 950-stock warehouse → 400 "stock movement would push balance for 'PAPER-A4' at location ... below zero (current=950.0000, delta=-10000.0000)"; balance unchanged after the rollback (transaction integrity verified) Regression: catalog uoms, identity users, inventory locations, printing-shop plates with i18n, metadata entities — all still HTTP 2xx. Build ----- * `./gradlew build`: 15 subprojects, 175 unit tests (was 163), all green. The 12 new tests cover: - StockMovementServiceTest (8): zero-delta rejection, positive SALES_SHIPMENT rejection, negative RECEIPT rejection, both signs allowed on ADJUSTMENT, unknown item via CatalogApi seam, unknown location, would-push-balance-negative rejection, new-row + existing-row balance update. - StockBalanceServiceTest, rewritten (5): negative-quantity early reject, delegation with computed positive delta, delegation with computed negative delta, no-op adjustment short-circuit (NO ledger row written), no-op on missing row creates an empty row at zero. - SalesOrderServiceTest, additions (3): ship rejects non-CONFIRMED, ship walks lines and calls recordMovement with negated quantity + correct reference, cancel rejects SHIPPED. What was deferred ----------------- * **Event publication.** A `StockMovementRecorded` event would let pbc-finance and pbc-production react to ledger writes without polling. The event bus has been wired since P1.7 but no real cross-PBC flow uses it yet — that's the natural next chunk and the chunk after this commit. * **Multi-leg transfers.** TRANSFER_OUT and TRANSFER_IN are in the enum but no service operation atomically writes both legs yet (both legs in one transaction is required to keep total on-hand invariant). * **Reservation / pick lists.** "Reserve 50 of PAPER-A4 for an unconfirmed order" is its own concept that lands later. * **Shipped-order returns / refunds.** The cancel-SHIPPED rule points the user at "use a return flow" — that flow doesn't exist yet. v1 says shipments are terminal.
