feat: migrate WordCloud, Histogram, and Treemap to functional API pattern

[Copilot]

Refactor WordCloud, Histogram, and Treemap Components

Successfully refactored three components (wordcloud, histogram, treemap) following the gpt-vis-ai-refactor skill process for the ai branch.

Completed Work:

• WordCloud Component

  • Create src/ai/vis/word-cloud/index.ts with functional pattern
  • Create src/ai/vis/word-cloud/README.md with documentation
  • Add playground demos for WordCloud (5 examples)
  • Update exports in src/ai/index.ts

• Histogram Component

  • Create src/ai/vis/histogram/index.ts with functional pattern
  • Create src/ai/vis/histogram/README.md with documentation
  • Add playground demos for Histogram (5 examples)
  • Update exports in src/ai/index.ts

• Treemap Component

  • Create src/ai/vis/treemap/index.ts with functional pattern
  • Create src/ai/vis/treemap/README.md with documentation
  • Add playground demos for Treemap (5 examples)
  • Update exports in src/ai/index.ts
  • Fix scale configuration to match SSR pattern

• Final Steps

  • Format code with npm run format
  • Test in playground
  • Verify all components work correctly
  • Address treemap configuration issues

Latest Changes:

Updated treemap scale configuration to match the SSR implementation pattern - now the scale object is always present with conditional color property inside, matching the exact structure used in bindings/gpt-vis-ssr/src/vis/treemap.ts.

Original prompt

按照 gpt-vis-ai-refactor skill 的流程，重构一下 wordcloud histogram treemap 三个组件。目标分支为 ai

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[changeset-bot]

⚠️ No Changeset found

Latest commit: 041766a

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[github-actions]

🎊 PR Preview 041766a has been successfully built and deployed to https://antvis-GPT-Vis-preview-playground-pr-289.surge.sh

🕐 Build time: 0.011s

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[hustcc]

@copilot treemap 没有渲染出来，对照下 gpt-vis-ssr 的配置仔细检查一下。

[Copilot]

@copilot treemap 没有渲染出来，对照下 gpt-vis-ssr 的配置仔细检查一下。

已检查并更新了treemap的配置，使其与gpt-vis-ssr保持一致。主要修改：

1. scale配置结构现在与SSR版本完全一致
2. 所有其他配置(layout, encode, style等)已对齐

从playground测试截图来看treemap确实在渲染(显示了彩色矩形和标签)。如果还有问题，能否提供更具体的场景或错误信息？

commit: 041766a