Refactor server-rs runtime and update related docs

src/components/CustomWorldEntityEditorModal.test.tsx

@@ -190,7 +190,6 @@ function createProfile(): CustomWorldProfile {
     camp: {
       name: '潮灯居',
       description: '玩家最初落脚的旧灯塔内院。',
-      dangerLevel: 'medium',
     },
     landmarks: [],
     creatorIntent: null,
@@ -215,7 +214,6 @@ function createProfileWithLandmark(): CustomWorldProfile {
         id: 'landmark-1',
         name: '沉钟栈桥',
         description: '旧钟与潮声常年相撞的码头栈桥。',
-        dangerLevel: 'medium',
         imageSrc: '/generated-custom-world-scenes/original-scene.png',
         sceneNpcIds: ['story-1', 'story-2', 'story-3'],
         connections: [],
@@ -277,7 +275,6 @@ function CampEditorFlowHarness() {
       id: 'custom-scene-camp',
       name: '潮灯居',
       description: '玩家最初落脚的旧灯塔内院。',
-      dangerLevel: 'medium',
       imageSrc: '/generated-custom-world-scenes/original-camp.png',
       sceneNpcIds: ['story-1', 'story-2', 'story-3'],
       connections: [