Add scene fragments to portrait prompts after clothing.

Thing, room, yard and climate precipitation can contribute a short prompt when they are in frame, with a budget so chairs stay silent.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/HSchool.Content/CatalogLoader.cs

@@ -454,8 +454,14 @@ public sealed class CatalogLoader
             ValidateColor(color);
         }
 
+        foreach (var thing in catalog.Things.Values)
+        {
+            PromptContributionValidator.Validate($"ThingDef '{thing.DefName}'", thing.Prompt);
+        }
+
         foreach (var room in catalog.Rooms.Values)
         {
+            PromptContributionValidator.Validate($"RoomDef '{room.DefName}'", room.Prompt);
             foreach (var slot in room.Slots)
             {
                 if (!catalog.Things.ContainsKey(slot.Thing))
@@ -532,6 +538,7 @@ public sealed class CatalogLoader
 
         foreach (var territory in catalog.Territories.Values)
         {
+            PromptContributionValidator.Validate($"TerritoryDef '{territory.DefName}'", territory.Prompt);
             if (!territory.Abstract && territory.TravelMinutes <= 0)
             {
                 throw new ContentLoadException($"TerritoryDef '{territory.DefName}' travelMinutes must be positive.");