Assert date-window clamp on Board ← Schedule projection per TZ 4.1.8-R2

src/shared/state/crossSectionNavigation.test.ts

@@ -225,6 +225,42 @@ describe("4.1.8-R1/R2: projectScheduleToBoard", () => {
     });
     expect(p.mode).toBe("route");
   });
+
+  it("4.1.8-R2: projectScheduleToBoard clamps to today when schedule dateFrom is > board window", () => {
+    // Clock frozen at 2026-05-15. Schedule dateFrom = 2026-07-01 (47 days forward, outside board's +14 window)
+    const schedule: ScheduleFilterSnapshot = {
+      mode: "route",
+      departure: "MOW",
+      arrival: "LED",
+      dateFrom: "20260701",
+      dateTo: "20260707",
+      timeFrom: "0000",
+      timeTo: "2400",
+      onlyDirect: false,
+      showReturn: false,
+      searchExecuted: true,
+    };
+    const projected = projectScheduleToBoard(schedule);
+    expect(projected.date).toBe("20260515"); // clamps to today
+  });
+
+  it("4.1.8-R2: projectScheduleToBoard uses today even when schedule dateFrom is before today-1", () => {
+    // Schedule dateFrom in the distant past
+    const schedule: ScheduleFilterSnapshot = {
+      mode: "route",
+      departure: "MOW",
+      arrival: "LED",
+      dateFrom: "20250101",
+      dateTo: "20250107",
+      timeFrom: "0000",
+      timeTo: "2400",
+      onlyDirect: false,
+      showReturn: false,
+      searchExecuted: true,
+    };
+    const projected = projectScheduleToBoard(schedule);
+    expect(projected.date).toBe("20260515"); // clamps to today
+  });
 });
 
 describe("4.1.1-R26 / 4.1.8-R3: map filter is independent of board/schedule", () => {