Refactor server-rs runtime and update related docs

src/services/customWorldBuilder.ts

@@ -158,11 +158,6 @@ export function buildExpandedCustomWorldProfile(
     ...landmark,
     id: landmark.id || createEntryId('landmark', landmark.name, index),
     description: clampText(landmark.description, 96),
-    dangerLevel:
-      landmark.dangerLevel ||
-      (resolveCustomWorldCompatibilityTemplateWorldType(profile) === WorldType.XIANXIA
-        ? 'high'
-        : 'medium'),
   }));
   const landmarkIdByReference = new Map<string, string>();
   landmarkDrafts.forEach((landmark) => {