Implement scene-based chapter quest progression

public/generated-qwen-sprites/_drafts/master/qwen-master-1775617263664/job.json

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+{
+  "draftId": "qwen-master-1775617263664",
+  "kind": "master",
+  "model": "qwen-image-2.0",
+  "size": "1024*1536",
+  "promptText": "单人，像素风，全身，2D 横版游戏角色标准设定图，角色始终朝右侧，侧视角为主，站立待机姿态，脚底完整可见，武器完整，身体比例稳定，轮廓清楚，适合后续制作 sprite sheet 动画。\n\n\n\n画面要求：纯色浅背景，画面中心构图，角色占画面高度 75% 左右，不要裁切头顶和脚底，不要多角色，不要复杂环境，不要镜头透视，不要特写。\n\n风格要求：高可读性游戏角色设定图，偏像素动画前置设计稿，形体清晰，服装层次明确，武器握持合理，便于后续连续动作生成。\n\n海底世界龙族三太子",
+  "negativePrompt": "正面视角，左朝向，镜头透视，半身像，脚被裁切，头顶被裁切，多角色，复杂背景，武器消失，武器换手，额外手臂，额外腿，服装变化，脸部变化，模糊，运动模糊，文字，水印，UI 元素",
+  "promptExtend": true,
+  "seed": 1101,
+  "candidateCount": 2,
+  "referenceImageCount": 1,
+  "drafts": [
+    {
+      "id": "qwen-master-1775617263664-1",
+      "label": "主图 1",
+      "imageSrc": "/generated-qwen-sprites/_drafts/master/qwen-master-1775617263664/candidate-01.png",
+      "remoteUrl": "https://dashscope-7c2c.oss-accelerate.aliyuncs.com/7d/76/20260408/8b3aee91/f1f26005-524c-4b73-a0d9-7afd9c7225c5.png?Expires=1776223062&OSSAccessKeyId=LTAI5tPxpiCM2hjmWrFXrym1&Signature=jF6UsD291eqkQy398eYRkwLL2bo%3D"
+    },
+    {
+      "id": "qwen-master-1775617263664-2",
+      "label": "主图 2",
+      "imageSrc": "/generated-qwen-sprites/_drafts/master/qwen-master-1775617263664/candidate-02.png",
+      "remoteUrl": "https://dashscope-7c2c.oss-accelerate.aliyuncs.com/7d/54/20260408/8b3aee91/a1b6f235-c5d1-4bff-9f9e-2d40917f2c65.png?Expires=1776223062&OSSAccessKeyId=LTAI5tPxpiCM2hjmWrFXrym1&Signature=8yjApWya5inBOZh0XmZLJ8%2BoBss%3D"
+    }
+  ],
+  "createdAt": "2026-04-08T03:01:09.641Z"
+}