fix(desktop): P17-FIX 起时钩子在 sample/autoplay 路径生效（resolveStartTick 纯函数 + 回归 + 重拍证据）

1 files changed, 14 insertions, 0 deletions

diff --git a/src/LivingVillage.Desktop.Tests/PrototypeTests.fs b/src/LivingVillage.Desktop.Tests/PrototypeTests.fs
index 4d2c895..b250824 100644
--- a/src/LivingVillage.Desktop.Tests/PrototypeTests.fs
+++ b/src/LivingVillage.Desktop.Tests/PrototypeTests.fs
@@ -902,6 +902,20 @@ type PrototypeTests () =
         Assert.AreEqual<int64>(6L * ticksPerHour, M6Presentation.startTickForHour 6.0)
 
     [<TestMethod>]
+    member _.StartTickResolutionHonoursEvidenceHourThenDaylightThenMidnight () =
+        let ticksPerHour = Sim.ticksPerDay / 24L
+
+        // P17-FIX: the evidence hour must win on the sample/autoplay path too, otherwise
+        // StartNewGame re-created the world at 00:00 and dusk/day shots were actually night.
+        Assert.AreEqual<int64>(M6Presentation.startTickForHour 20.75, M6Presentation.resolveStartTick (Some 20.75) false)
+        Assert.AreEqual<int64>(int64 20 * ticksPerHour + ticksPerHour * 3L / 4L, M6Presentation.resolveStartTick (Some 20.75) false)
+        // Explicit hour overrides the daylight bootstrap.
+        Assert.AreEqual<int64>(12L * ticksPerHour, M6Presentation.resolveStartTick (Some 12.0) true)
+        // No override: daylight -> 6:00, otherwise midnight.
+        Assert.AreEqual<int64>(6L * ticksPerHour, M6Presentation.resolveStartTick None true)
+        Assert.AreEqual<int64>(0L, M6Presentation.resolveStartTick None false)
+
+    [<TestMethod>]
     member _.TitleEntranceProgressIsDeterministicAndCompleteAfterTwoSeconds () =
         // 120 frames at the fixed 60Hz step = 2s entrance, pure function of frame count.
         Assert.AreEqual<float32>(1.0f, TitleScreen.entranceProgress 0L)