Implement reject step functionality for contract approval process and enhance contract editing experience

apps/edr-freight-web/portal/src/components/customer-actions/deriveContractCustomerAction.ts

@@ -117,6 +117,18 @@ export function deriveContractCustomerAction(
     };
   }
 
+  // Saved-but-not-submitted contract — send the customer back into the wizard to
+  // finish editing and submit it for review.
+  if (contract.status === "DRAFT" || contract.status === "RENEWAL_DRAFT") {
+    return {
+      type: "navigate",
+      label: "Continue draft",
+      to: `/contracts/${id}/edit`,
+      primary: true,
+      icon: PencilLine,
+    };
+  }
+
   const payable = findPayableBookingForContract(id, bookings);
   if (payable) {
     return {

apps/edr-freight-web/portal/src/pages/contracts/ContractDetailPage.tsx

@@ -73,10 +73,6 @@ import {
   MUTED,
 } from "./contract-ui";
 
-// Statuses where a customer may create a shipment booking themselves. Reached
-// only after self-clearance is approved by Operations (Path A) or, for DOMESTIC,
-// directly at counter-sign.
-const PATH_A_BOOKABLE = ["FULLY_EXECUTED", "CONTRACT_ACTIVE"];
 // Statuses where the customer uploads clearance documents on the contract. Used
 // by both paths: Path B (customs, GL-reviewed) and Path A self-clearance
 // (non-customs IMPORT/EXPORT, Operations-reviewed).
@@ -263,10 +259,14 @@ export default function ContractDetailPage() {
     );
   }
 
-  // Staff returned the contract for changes — send the customer to the full edit
-  // wizard (edit any term + replace documents → resubmit) rather than the
-  // read-only detail.
-  if (contract.status === "CHANGES_REQUESTED") {
+  // Not yet submitted (customer saved a draft) or staff returned the contract for
+  // changes — send the customer to the full edit wizard (edit any term + replace
+  // documents → submit) rather than the read-only detail.
+  if (
+    contract.status === "DRAFT" ||
+    contract.status === "RENEWAL_DRAFT" ||
+    contract.status === "CHANGES_REQUESTED"
+  ) {
     return <Navigate to={`/contracts/${contract.id}/edit`} replace />;
   }
 
@@ -305,9 +305,13 @@ export default function ContractDetailPage() {
   const clearanceFinalized =
     contract.clearanceStatus === "CLEARANCE_READY_FOR_BOOKING" ||
     contract.status === "CLEARANCE_READY_FOR_BOOKING";
-  const canBookShipment =
-    !customsPath && PATH_A_BOOKABLE.includes(contract.status);
   const bookingAction = getContractBookingAction(contract, contractBookings);
+  // Whether the customer may open a new self-service booking. Derived from the
+  // shared booking-action helper so it honours the ONE_TIME single-slot rule:
+  // once a non-terminal booking exists on a ONE_TIME contract there is no free
+  // slot, so the action is "none" and no booking button is shown.
+  const canBookShipment =
+    bookingAction.kind === "book" || bookingAction.kind === "rebook";
   const canRequestShipment = bookingAction.kind === "request";
   // Customs + clearance finalized: GL is preparing the booking — surface a
   // status notice instead of any action.

apps/edr-freight-web/portal/src/pages/contracts/NewContractPage.tsx

@@ -81,9 +81,10 @@ type PriceModalMode = "submit" | "draft";
 
 /**
  * The contract wizard, used both to create a new contract and — in `edit` mode —
- * to edit & resubmit a contract staff returned with CHANGES_REQUESTED. Edit mode
- * hydrates the form from the saved contract, lets the customer change any term
- * and replace documents, then runs the same update → price → submit flow.
+ * to continue an unsubmitted DRAFT or edit & resubmit a contract staff returned
+ * with CHANGES_REQUESTED. Edit mode hydrates the form from the saved contract,
+ * lets the customer change any term and replace documents, then runs the same
+ * update → price → submit flow.
  */
 export default function NewContractPage({
   mode = "create",