fix(mofa-cards): remove real artist names from style prompts

[BH3GEI]

Summary

• Replace specific artist references (丰子恺/Feng Zikai, 老吴画画/Liu Shuyong) with generic style descriptors (童趣水墨, 民国文人水墨) in card style prompts
• Fixes OpenAI content safety system rejections when generating cards with these styles
• All visual style details and descriptions preserved — only names removed

Files changed

• mofa-cards/styles/feng-zikai.toml — "Feng Zikai 丰子恺" → "童趣水墨"
• mofa-cards/styles/laoshu.toml — "Laoshu 老吴画画" → "民国文人水墨"

Test plan

• All 8 card styles tested on macmini2 with gpt-image-2, all pass
• feng-zikai and laoshu no longer trigger safety rejections

[Copilot]

Pull request overview

This PR replaces real artist names (Feng Zikai / 丰子恺 and 老吴画画 / Liu Shuyong) in two card style prompt files with generic Chinese style descriptors (童趣水墨, 民国文人水墨). The goal is to avoid OpenAI's content safety system rejecting image generations that reference named living/real artists, while preserving all visual style descriptions.

Changes:

• Renamed display_name and replaced artist references in feng-zikai.toml with 童趣水墨.
• Replaced 老吴画画 / Liu Shuyong references in laoshu.toml with 民国文人水墨 / Minimal Folk Ink-Wash, including removing engraved seal text referencing the artist.
• Preserved all visual details (colors, composition, typography, brush stroke descriptions).

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
mofa-cards/styles/feng-zikai.toml	Replaces "Feng Zikai (丰子恺)" references with generic "童趣水墨" descriptor across all three variants.
mofa-cards/styles/laoshu.toml	Replaces "老吴画画 / Liu Shuyong" references with "民国文人水墨 / Minimal Folk Ink-Wash" and removes engraved seal text naming the artist.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.