feat: add Simplified Chinese README translation

[LuoYe17]

Summary

• Added README.zh-CN.md with a full Simplified Chinese translation of the English README
• Added a prominent language switcher (🌐 English | 简体中文) at the top of both @README.md and @README.zh-CN.md
• Added language badge links in the badges row of both files

Summary by CodeRabbit

• Documentation
  • Added a full Simplified Chinese README with project overview, install/getting-started, contribution guidance, feature comparisons, and contributor highlights.
  • Added a top-right language selector to toggle between English and Simplified Chinese documentation.
  • Added a Simplified Chinese language badge in the header for improved discoverability.

[coderabbitai]

Caution

Review failed

The pull request is closed.

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: b1db9926-5ee1-4f18-8678-6ae825049f43

📥 Commits

Reviewing files that changed from the base of the PR and between 505b7f8 and c718d7a.

📒 Files selected for processing (1)

• README.md

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📝 Walkthrough

Walkthrough

This PR adds Simplified Chinese localization: README.md gets a language selector and a 简体中文 badge; a new README.zh-CN.md provides full Chinese documentation (installation, features, contribution guide, comparisons, and community sections).

Changes

Chinese README Localization

Layer / File(s)	Summary
English README language switcher README.md	Adds a centered flag-based language selector linking README.md and README.zh-CN.md, and a 简体中文 header badge linking to README.zh-CN.md.
Simplified Chinese README README.zh-CN.md	New comprehensive Chinese README with branding/language switch, early-access and install commands (macOS/Linux, Windows), feature overview, contribution workflow, context-building/Memory backend notes, OpenHuman vs other frameworks comparison, GitHub stars callout with history chart, and contributors hall of fame section.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Possibly related issues

• Suggestion: Add a Chinese version of README (README.zh-CN.md) #1886: Adds README.zh-CN.md and language selector as requested in that issue.

Poem

🐇 I hopped through markdown rows,
Placed flags where language flows,
English greets Chinese light,
Docs now bilingual and bright,
A tiny rabbit's README prose.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately describes the main change: adding a Simplified Chinese README translation, which is the primary focus of the pull request.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

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[coderabbitai]

Actionable comments posted: 2

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@README.zh-CN.md`:
- Line 87: The inline <img> tag in README.zh-CN.md is missing an alt attribute
which hurts accessibility and triggers markdown lint warnings; update the <img
src="./gitbooks/.gitbook/assets/image (1).png" /> element to include a concise,
descriptive alt text (for example alt="描述性文字" or an equivalent Chinese
description appropriate to the image) so screen readers and linters have
meaningful content.
- Around line 46-54: The fenced install code block in README.zh-CN.md is
unlabeled which breaks markdown linting; update the opening fence to include a
language identifier (e.g., change "```" to "```bash") for the install commands
shown (the block that begins with the Chinese install comment and the curl/irm
lines) so syntax highlighting and linters recognize it.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 169d5809-965a-49e1-a750-9dde101eb724

📥 Commits

Reviewing files that changed from the base of the PR and between efab59b and 3a6a50a.

📒 Files selected for processing (2)

• README.md
• README.zh-CN.md

[LuoYe17]

@senamakel Please check

[senamakel]

really well done. thank you so much for the PR