ECHO：终端 Agent 免费学习世界模型

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请基于参考封面的构图、视觉隐喻和公众号缩略图可读性，生成一张新的微信公众号横版封面。 输出尺寸：1456x582，比例约 2.5:1；核心主体和必要标题信息要兼顾公众号安全方形裁切。 公众号文章标题：{填写公众号文章标题} 简介：{填写简介} 原封面方法：ECHO：终端Agent免费学习世界模型风格双技能 Create a horizontal WeChat public-account article cover, 2.35:1 aspect ratio, for an article titled "ECHO：终端 Agent 免费学习世界模型". Central concept: 把抽象工具能力可视化为界面窗口、代码片段、节点网络、操作台、AI 工作流或发光的系统核心。 Style: preserve the reference cover's visual direction: 高饱和海报/科技广告视觉. Use a palette inspired by #03060a (black), #000204 (black), #15111e (charcoal), #192b34 (charcoal). Keep the image editorial, conceptual, and readable as a small WeChat thumbnail. Composition: 画面信息量较高，适合用中心主体加左右辅助信息，保持缩略图可读。 Keep the main subject and any essential title text inside the safe square crop, while using the full wide frame for atmosphere, secondary symbols, or directional motion. Text strategy: use either no text or a very short headline fragment from the title. If text is used, make it large, clean, and integrated into the layout rather than pasted on top. Mood: match the article skill "ECHO终端Agent免费学习世界模型风格双技能" -- useful, sharp, high-signal, and slightly more memorable than a normal tutorial thumbnail. Avoid: photorealistic clutter unless the source cover is photo-led, fake logos, unreadable tiny text, generic gradient blobs, stock-office imagery, watermark-like marks, and literal screenshots unless the article is explicitly about software interfaces.