The Complexity Ratchet Effect of AI Agents: Why 90% Test Coverage Is Critical

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Based on the reference cover's composition, visual metaphor, and WeChat public-account thumbnail readability, generate a new horizontal WeChat public-account cover. Output size: 1456x582, ratio about 2.5:1; the core subject and essential title information should also work within WeChat's safe square crop. WeChat article title: {fill in the WeChat article title} Summary: {fill in the summary} Original cover method: The Complexity Ratchet Effect of AI Agents: Why 90% Test Coverage Is Critical, style dual-skill Create a horizontal WeChat public-account article cover, 2.35:1 aspect ratio, for an article titled "The Complexity Ratchet Effect of AI Agents: Why 90% Test Coverage Is Critical". Central concept: visualize abstract tool capabilities as interface windows, code snippets, node networks, control consoles, AI workflows, or a glowing system core. Style: preserve the reference cover's visual direction: dark high-contrast cinematic/fable-like cover. Use a palette inspired by #0b0f13 (black), #433e33 (charcoal), #776853 (brown), #13181b (charcoal). Keep the image editorial, conceptual, and readable as a small WeChat thumbnail. Composition: the image is information-dense, so use a central subject with supporting information on the left and right to keep the thumbnail readable. 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 "The Complexity Ratchet Effect of AI Agents Why 90%... style dual-skill" -- 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.