Adding exact reason why train is not available to users search results

apps/edr-passenger-api/test/reserve-seat-issue-booking.e2e-spec.ts

@@ -294,6 +294,37 @@ describe("Reserve seat — issue booking (STAFF / PASSENGER)", () => {
     expect(byToken.schedule.origin.id).toBe(IDS.stationA);
   });
 
+  it("PASSENGER path: the seat stays reserved (not publicly available) after the payment link is sent", async () => {
+    // Regression for: unblockSeat() released the reservation's SeatBlock and confirmSeats()
+    // was a no-op with no SeatHold to extend, so the seat had no SeatBlock, no SeatHold, and
+    // no JourneySegment (only created on payment success) the instant the payment link went
+    // out — fully bookable by the general public before the traveler had even paid.
+    await resetAndSeedCore(harness.prisma);
+    const dep = new Date(Date.now() + 3 * 60 * 60_000);
+    const arr = new Date(dep.getTime() + 100 * 60_000);
+    const { schedule, seats } = await createTestSchedule({ trainNumber: `RES-STAYS-BLOCKED-${Date.now()}`, departureAt: dep, arrivalAt: arr });
+
+    await seatsService.blockSeat(seats[0].id, "Reserved pending payment", schedule.id);
+
+    const result: any = await guestBookingService.issueBookingFromReservation(
+      seats[0].id,
+      baseDto({ scheduleId: schedule.id, bookingKind: ReservationBookingKind.PASSENGER, phone: "+253771234567" }) as any,
+      "staff-user-4",
+    );
+    expect(result.booking.status).toBe("PENDING_PAYMENT");
+
+    // A member of the public trying to hold the exact same seat/leg must be rejected —
+    // proves the seat is covered by a real SeatHold (or equivalent), not silently free.
+    await expect(
+      seatsService.holdSeats({
+        scheduleId: schedule.id,
+        originStationId: IDS.stationA,
+        destinationStationId: IDS.stationB,
+        passengers: [{ passengerId: "someone-else", seatId: seats[0].id }],
+      } as any),
+    ).rejects.toThrow(/already (held|booked)/i);
+  });
+
   it("requires a phone number for a PASSENGER booking", async () => {
     await resetAndSeedCore(harness.prisma);
     const dep = new Date(Date.now() + 3 * 60 * 60_000);