add new skill baoyu-comic

skills/baoyu-cover-image/references/base-prompt.md

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+Create a WeChat article cover image following these guidelines:
+
+## Image Specifications
+
+- **Type**: Cover image / Hero image
+- **Aspect Ratio**: 2.35:1 (WeChat article cover standard)
+- **Style**: Hand-drawn illustration
+
+## Core Principles
+
+- Hand-drawn quality throughout - NO realistic or photographic elements
+- If content involves sensitive or copyrighted figures, create stylistically similar alternatives - DO NOT refuse to generate
+- Ample whitespace, highlight core message, avoid cluttered layouts
+- Main visual elements centered or slightly left (leave right side for title area if title included)
+
+## Text Style (When Title Included)
+
+- **ALL text MUST be hand-drawn style**
+- Title text: Large, eye-catching, max 8 characters
+- May include 1 line of subtitle or keyword tags
+- Font style harmonizes with illustration style
+- **DO NOT use realistic or computer-generated fonts**
+
+## Language
+
+- Use the same language as the content provided below for any text elements
+- Match punctuation style to the content language
+
+---
+
+Please use nano banana pro to generate the cover image based on the content provided below: