docs: trim repetitive feature list in README header

[hutaobo]

Collapses the three prose enumerations of the nine feature areas (tagline, figure caption, intro) into a single concise tagline. The overview figure and the section table now carry the enumeration — no prose repetition.

🤖 Generated with Claude Code

Summary by Sourcery

简化并去重 README 中的特性描述，同时将概览图切换为 SVG 资源。

Documentation:

• 精简 README 的标题标语和章节引言，避免重复列举九大特性。
• 将 README 和文档中的 PNG 概览图替换为 SVG 版本，并将该 SVG 资源添加到文档的静态图像中。

Original summary in English

Summary by Sourcery

Simplify and deduplicate the README’s feature description while switching overview graphics to SVG assets.

Documentation:

• Streamline the README header tagline and section introduction to avoid repeating the nine-feature enumeration.
• Replace PNG overview figures with SVG versions across README and documentation, adding the SVG asset to the docs static figures.

[sourcery-ai]

审阅者指南（在小型 PR 上折叠显示）

审阅者指南

更新 README 和文档，将冗长、重复的功能罗列替换为精炼标语，将概览图片从 PNG 切换为 SVG，并在加入新的 SVG 资源的同时，进一步澄清九个部分的整体结构。

文件级变更

变更	详情	文件
精简 README 头部文案并澄清章节组织结构，同时避免重复枚举功能。	在 README 标语中，用关于加载、分析和解释 Xenium 空间数据的简洁描述，替换了对九大功能区域的冗长文字列表。 删除冗余的图注段落，该段落对与概览图和章节表相同的九大功能区域进行了重复描述。 重写引言句，强调围绕九个章节及其规范入口进行组织，而不是重复罗列功能列表。	README.md
将概览图资源在 README 和文档中统一标准化为 SVG，并添加新的 SVG 文件。	在 README 中，将概览图片引用从 PNG 文件更新为新的 SVG 文件，同时保持替代文本和布局一致。 在 Sphinx 文档的首页和九大功能概览页面中，将图片从引用 PNG 更新为引用 SVG。 在 docs 静态图片目录中添加新的 SVG 概览图资源。	README.md docs/index.md docs/user-guide/nine-feature-overview.md docs/_static/figures/pyxenium-nine-feature-overview.svg

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Original review guide in English

Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

Updates the README and docs to replace a verbose, repetitive feature enumeration with a concise tagline, switch overview images from PNG to SVG, and clarify the nine-section organization while adding the new SVG asset.

File-Level Changes

Change	Details	Files
Simplified README header copy and clarified section organization while avoiding repeated feature enumeration.	Replaced long prose list of nine feature areas in the README tagline with a concise description of loading, analyzing, and interpreting Xenium spatial data. Removed the redundant figure caption paragraph describing the same nine feature areas as the overview figure and section table. Rephrased the introduction sentence to emphasize organization around nine sections with canonical entry points instead of repeating the feature list.	README.md
Standardized the overview figure asset to an SVG across README and documentation, adding the new SVG file.	Updated the overview image reference in the README from the PNG file to the new SVG file while keeping alt text and layout consistent. Updated Sphinx documentation figures in index and nine-feature overview pages to reference the SVG instead of the PNG. Added the new SVG overview figure asset under the docs static figures directory.	README.md docs/index.md docs/user-guide/nine-feature-overview.md docs/_static/figures/pyxenium-nine-feature-overview.svg

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[sourcery-ai]

嘿，我已经审查了你的更改，看起来很棒！

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Original comment in English

Hey - I've reviewed your changes and they look great!

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[Copilot]

Pull request overview

This PR streamlines top-level documentation by removing repetitive prose lists of pyXenium’s “nine feature areas” in the README header and switching the “nine-feature overview” graphic from PNG to SVG where it’s embedded in the README and Sphinx docs.

Changes:

• Replace the README header’s long feature enumeration with a concise one-line tagline.
• Switch the embedded “nine-feature overview” image from PNG to SVG in the README.
• Update Sphinx {figure} directives to reference the SVG asset in the docs index and the “nine-feature overview” page.

Reviewed changes

Copilot reviewed 3 out of 5 changed files in this pull request and generated no comments.

File	Description
README.md	Simplifies the header tagline and updates the overview image reference to SVG while removing redundant prose.
docs/user-guide/nine-feature-overview.md	Updates the MyST {figure} to use the SVG overview graphic.
docs/index.md	Updates the homepage {figure} to use the SVG overview graphic.

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