v0.1.12 - README language parity

What's changed

• Reviewed both README.md and README.zh-CN.md for demo wording, links, workflow consistency, and stale references.
• Added the missing Chinese 开发安装 section to match the English Development Install section.
• Split the Chinese example request into a dedicated 示例 Prompt section for parity with the English README.

Verification

• Checked local links in both README files.
• Confirmed no stale local redraw script, visual-assets folder, local generated image paths, or machine-specific paths are referenced.
• Ran skill quick validation with PYTHONUTF8=1.
• Ran diff whitespace check.