From ef0e1e38e5c62aa082751a4d8d5548e1241cb80d Mon Sep 17 00:00:00 2001
From: gnezim <gnezim@gmail.com>
Date: Tue, 21 Apr 2026 18:08:42 +0300
Subject: [PATCH] =?UTF-8?q?Assert=20date-window=20clamp=20on=20Board=20?=
 =?UTF-8?q?=E2=86=90=20Schedule=20projection=20per=20TZ=204.1.8-R2?=
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---
 .../state/crossSectionNavigation.test.ts      | 36 +++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/src/shared/state/crossSectionNavigation.test.ts b/src/shared/state/crossSectionNavigation.test.ts
index 49e1b4be..da943639 100644
--- a/src/shared/state/crossSectionNavigation.test.ts
+++ b/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", () => {