feat(desktop): P31 step4 story progress display + evidence shots

- Task panel (T key): a storyline row per occupation, e.g. ju-qing-xian:
shui-wei-yu-shou-cheng, zou-fang-zhong (line name + stage name); absent
for occupation-free saves.
- Occupation select page: minimal hint line showing the selected
  occupation's storyline name.
- Evidence hook LV_STORY_SHOT=1 (+LV_STORY_OCCUPATION, LV_STORY_STAGE):
  boots a real world through the standard bootstrap, advances the story
  via the real dialogue pipeline (chooseDialogueWith bias + Story.onDialogue
  + StoryAnnal append), opens the task panel and saves one back-buffer
  frame, then exits. 4 Xvfb shots (farmer/fisher/peddler/scholar) captured
  under art/ (gitignored, not committed).
- 4 new desktop tests (156 -> 160): panel storyline lines, bias + story
  advance through M5Interaction, no-occupation path stays story-free.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/LivingVillage.Desktop.Tests/LivingVillage.Desktop.Tests.fsproj b/src/LivingVillage.Desktop.Tests/LivingVillage.Desktop.Tests.fsproj
index a0c98b0..d4fa1f5 100644
--- a/src/LivingVillage.Desktop.Tests/LivingVillage.Desktop.Tests.fsproj
+++ b/src/LivingVillage.Desktop.Tests/LivingVillage.Desktop.Tests.fsproj
@@ -10,6 +10,7 @@
     <Compile Include="M6aTests.fs" />
     <Compile Include="M6bTests.fs" />
     <Compile Include="P16UiTests.fs" />
+    <Compile Include="P31StoryUiTests.fs" />
     <Compile Include="PrototypeTests.fs" />
     <Compile Include="MapGenTests.fs" />
     <Compile Include="PerformanceSummaryTests.fs" />