diff --git a/docs/workflows.md b/docs/workflows.md
index 0455ac8e..9ead2474 100644
--- a/docs/workflows.md
+++ b/docs/workflows.md
@@ -31,32 +31,6 @@ rules.
 | `REFUNDED` | None | Terminal. |
 | `SHIPPED` | `COMPLETED`, `DELIVERED`, `PARTIALLY_REFUNDED`, `REFUNDED` | - |
 
-The `DELIVERED` transition can be driven automatically by delivery-tracking
-polling (TrackShip or the active shopping connector, via `/api/cron/delivery-status`).
-That cron path runs the **same** transition guard and side effects as a manual
-delivery — it does not write the status directly. Because the cron has no user
-session it skips only the permission check (not the state-machine guard, unlike
-the WooCommerce status-sync path), so if an order has moved out of a deliverable
-state (e.g. cancelled or refunded after dispatch) between the poll's SHIPPED
-query and the under-lock write, the guard rejects the change and the cron logs a
-`delivery_status_skipped` warning instead of forcing it.
-
-**`COMPLETED` vs `DELIVERED`.** Both are manual, operator-set terminal-ish
-statuses reached from `SHIPPED` (and `COMPLETED → DELIVERED`). `DELIVERED` means
-the carrier confirmed delivery and can be set automatically by the delivery-status
-cron; `COMPLETED` is a manual "this order is done from our side" marker for
-businesses that don't track delivery (no automatic trigger sets it). Neither is
-forced by any sync; both still allow `PARTIALLY_REFUNDED`/`REFUNDED` afterwards.
-Use `DELIVERED` when delivery tracking is in play, `COMPLETED` otherwise.
-
-Manual status edits are rejected on **archived** orders (unarchive first);
-automated pushes (WooCommerce force-sync, the delivery-status cron) still apply.
-Deleting a payment that takes an already-paid order in an advanced status
-(`SHIPPED`/`COMPLETED`/`DELIVERED`/`PARTIALLY_REFUNDED`) back below fully-paid
-does not auto-revert the status but raises a `payment_status_mismatch` warning
-activity log so the operator can decide (it fires only on a genuine paid→unpaid
-transition, not for orders that were never fully paid, e.g. credit terms).
-
 ### Shipments
 
 | Status | Allowed next statuses | Notes |
diff --git a/lib/domain/inventory/invariants.ts b/lib/domain/inventory/invariants.ts
index abf421f7..71288a87 100644
--- a/lib/domain/inventory/invariants.ts
+++ b/lib/domain/inventory/invariants.ts
@@ -1710,7 +1710,7 @@ function buildSqlInventoryInvariantQuery(options: Required<Pick<InventoryInvaria
           'fromWarehouseId', st."fromWarehouseId",
           'dispatchedAt', st."dispatchedAt",
           'qty', stl.qty::float8,
-          'thresholdDays', ${STRANDED_TRANSFER_DAYS}
+          'thresholdDays', ${STRANDED_TRANSFER_DAYS}::int
         ) AS details
       FROM "stock_transfers" st
       INNER JOIN "stock_transfer_lines" stl ON stl."transferId" = st.id
diff --git a/prisma/migrations/20260619120000_cost_layer_qty_precision_14_6/migration.sql b/prisma/migrations/20260619120000_cost_layer_qty_precision_14_6/migration.sql
index 1f9f8e65..82d84f7d 100644
--- a/prisma/migrations/20260619120000_cost_layer_qty_precision_14_6/migration.sql
+++ b/prisma/migrations/20260619120000_cost_layer_qty_precision_14_6/migration.sql
@@ -25,9 +25,25 @@ ALTER TABLE "stock_levels"
   ALTER COLUMN "quantity" TYPE numeric(14,6),
   ALTER COLUMN "reservedQty" TYPE numeric(14,6);
 
+-- The stock_movements_reporting_evidence_guard constraint trigger (migration
+-- 20260602103000) lists qty in its "UPDATE OF ... qty ..." column set, so Postgres
+-- refuses to alter qty's type while it exists ("cannot alter type of a column used
+-- in a trigger definition"). Drop the trigger, rewrite the column, then recreate it
+-- identically — the trigger FUNCTION (assert_stock_movement_reporting_evidence) is
+-- unchanged, so only the trigger binding is recreated.
+-- prisma-schema-scope-ok: db-native constraint trigger drop/recreate around the qty column rewrite; constraint triggers are not modeled in prisma/schema.prisma, so there is no matching schema change
+DROP TRIGGER IF EXISTS stock_movements_reporting_evidence_guard ON "stock_movements";
+
 ALTER TABLE "stock_movements"
   ALTER COLUMN "qty" TYPE numeric(14,6);
 
+CREATE CONSTRAINT TRIGGER stock_movements_reporting_evidence_guard
+AFTER INSERT OR UPDATE OF type, "productId", "fromWarehouseId", "toWarehouseId", qty, "referenceType", "referenceId"
+ON "stock_movements"
+DEFERRABLE INITIALLY DEFERRED
+FOR EACH ROW
+EXECUTE FUNCTION assert_stock_movement_reporting_evidence();
+
 -- Persisted daily snapshots and reservation snapshots derive from the live
 -- quantities above; widen them (and roundQty now persists 6dp) so as-of/turnover
 -- reports don't disagree with live stock at the 5th/6th dp.