docs(i18n): add zh-CN translation for developing/README.md (C2b)

[JAYcodr]

docs(i18n): add zh-CN translation for developing/README.md (C2b)

Translates the developing directory landing page for Chinese contributors.

• Links localized to .zh-CN.md targets where available (C1 + C2 docs)
• Retains English links for pages not yet translated
• Follows terminology-zh-CN.md: Tauri 壳层, 智能体, sidecar, vendored, etc.
• Adds lang: zh-CN frontmatter for GitBook multi-language rendering

Summary

• Add zh-CN translation for gitbooks/developing/README.md, the landing page for contributor docs
• Localize internal links to point to existing C1/C2 zh-CN translations
• Retain English links for pages not yet translated (cloud-deploy, tool-memory, etc.)
• Add lang: zh-CN frontmatter for GitBook multi-language rendering
• 此 PR 建议在 C1 / C2 合并后合并，以确保所有 .zh-CN.md 内部链接指向的目标文件已存在于 main 分支。

Problem

The developing/ directory landing page was English-only, creating friction for Chinese-speaking contributors trying to navigate build instructions, architecture docs, and testing guides from the entry point.

Solution

Created developing/README.zh-CN.md with full translation while preserving:

• Original frontmatter structure with lang: zh-CN added
• Untranslated code blocks, CLI commands, and brand names
• Technical terms per project convention (Tauri, Rust, sidecar, vendored, etc.)
• Internal links routed to .zh-CN.md counterparts where C1/C2 translations exist

Submission Checklist

• Tests added or updated — N/A: documentation-only change, no executable code modified
• Diff coverage ≥ 80% — N/A: only .md file added, no testable source lines changed
• Coverage matrix updated — N/A: no feature IDs or testable behavior changed
• All affected feature IDs from the matrix are listed — N/A: no matrix entries affected
• No new external network dependencies introduced — N/A: documentation only
• Manual smoke checklist updated — N/A: no release-cut surfaces touched
• Linked issue closed — N/A: no pre-existing issue for this docs batch

Impact

• Runtime/platform impact: None
• Performance/security/migration/compatibility: None
• User-visible effect: Chinese contributors now see a localized landing page when entering the developing docs section

Related

• Follow-up PR(s)/TODOs: Batch D (features cleanup: cloud-deploy, tool-memory, troubleshooting) and Batch E (legal + root docs) pending

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AI Authored PR Metadata

Linear Issue

• Key: N/A
• URL: N/A

Commit & Branch

• Branch: docs/i18n-batch-c2b-developing-readme
• Commit SHA: 68852af61384ad43b4098d07f088a243a990fc1c

Validation Run

• pnpm --filter openhuman-app format:check — N/A: no source code changed
• pnpm typecheck — N/A: no TypeScript changed
• Focused tests — N/A: docs-only
• Rust fmt/check — N/A: no Rust changed
• Tauri fmt/check — N/A: no Tauri changed

Validation Blocked

• command: N/A
• error: N/A
• impact: N/A

Behavior Changes

• Intended behavior change: None
• User-visible effect: Chinese developing docs landing page now available

Parity Contract

• Legacy behavior preserved: N/A
• Guard/fallback/dispatch parity checks: N/A

Duplicate / Superseded PR Handling

• Duplicate PR(s): None
• Canonical PR: This PR
• Resolution: N/A

Summary by CodeRabbit

• Documentation
  • Added a comprehensive Chinese developer guide covering repository overview, code structure, development setup, core build and architecture, frontend and shell layers, server details, layered testing and coverage gates, release and cloud deployment procedures, advanced exploration pointers (agents, CEF, subconscious loop), and contribution guidelines (PR targets, templates, focused changes).

[coderabbitai]

📝 Walkthrough

Walkthrough

Adds a new Chinese developer guide at gitbooks/developing/README.zh-CN.md covering repository overview, code structure, onboarding steps, testing requirements (≥80% coverage gate), release/deployment entry points, architecture deep-dives, and contribution guidelines.

Changes

Developer Documentation

Layer / File(s)

Summary

Chinese developer guide document gitbooks/developing/README.zh-CN.md

New Chinese-language developer guide including metadata, repository overview and GPLv3 note, code structure map (app/, src/, gitbooks/, etc.), “Getting started” onboarding path, testing layers and PR coverage gate (≥80%), release and cloud deployment entry points, architecture deep-dive links (Agent Harness, CEF, Subconscious Loop), and contribution rules (PR target main, templates, focused changes).

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Suggested labels

working

Suggested reviewers

• senamakel
• graycyrus

Poem

🐇 在代码林中我轻跳，披露路标与门道，
从搭建到发布每一步都写好，
测试门槛摆在前方，覆盖率旗帜高高飘，
贡献者跟随指南来，项目更明了。 ✨

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title accurately reflects the primary change: adding a Chinese translation (zh-CN) for the developing/README.md file, which is exactly what the changeset contains.
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.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.

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

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[coderabbitai]

Actionable comments posted: 1

🤖 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 `@gitbooks/developing/README.zh-CN.md`:
- Line 20: 在 README 行中把误写的 Rust crate 名称 `openhuman_core` 改为正确的库 crate 名称
`openhuman`，并保留/明确指出 `openhuman-core` 是 CLI binary；查找包含字符串 `src/` 和
`openhuman_core` 的这一描述行并替换为表述：`src/` 对应 Rust 库 crate `openhuman`，并包含
`openhuman-core` CLI 二进制文件。

🪄 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: 290e30a5-e825-415f-b34b-d0dd4f637fc0

📥 Commits

Reviewing files that changed from the base of the PR and between 788087c and 68852af.

📒 Files selected for processing (1)

• gitbooks/developing/README.zh-CN.md