i18n(zh-CN): add Simplified Chinese translations for all documentation (#47)

Add complete Simplified Chinese (zh-CN) localization as the third
supported language alongside English and Spanish. This includes:

- 12 document templates (AILOG, ADR, AIDEC, DPIA, ETH, INC, MCARD, REQ, SBOM, SEC, TDE, TES)
- 12 governance documents (AGENT-RULES, AI-GOVERNANCE-POLICY, AI-KPIS, etc.)
- 5 NIST implementation guides (AI RMF + GenAI risks)
- 6 user-facing docs (README, CONTRIBUTING, CODE_OF_CONDUCT, adopter guides)
- Generalized CLI template resolution to support any language (not just es)
- Updated language navigation links across all three languages
- Updated CLAUDE.md version-bump checklist with zh-CN paths

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: montfort

CLAUDE.md

@@ -64,8 +64,10 @@ Run `cargo check` in `cli/` to update `Cargo.lock`.
 Update version references in all docs that mention version numbers:
 - `docs/adopters/CLI-REFERENCE.md` (EN — versioning table + example outputs)
 - `docs/i18n/es/adopters/CLI-REFERENCE.md` (ES — same)
+- `docs/i18n/zh-CN/adopters/CLI-REFERENCE.md` (zh-CN — same)
 - `README.md` (versioning table)
 - `docs/i18n/es/README.md` (ES — versioning table)
+- `docs/i18n/zh-CN/README.md` (zh-CN — versioning table)
 
 Update `CHANGELOG.md` (root) following [Keep a Changelog](https://keepachangelog.com/en/1.1.0/) format:
 - Add a new `## CLI X.Y.Z` section at the top (below the header)
@@ -128,11 +130,12 @@ version: "X.Y.Z"
 Update version references in docs:
 - `docs/adopters/CLI-REFERENCE.md` (EN — versioning table)
 - `docs/i18n/es/adopters/CLI-REFERENCE.md` (ES — versioning table)
-- `README.md` and `docs/i18n/es/README.md` (versioning tables)
-- `dist/.devtrail/00-governance/QUICK-REFERENCE.md` (EN + ES footer)
-- `dist/.devtrail/00-governance/AGENT-RULES.md` (EN + ES footer)
-- `dist/.devtrail/00-governance/DOCUMENTATION-POLICY.md` (EN + ES footer)
-- `dist/.devtrail/00-governance/C4-DIAGRAM-GUIDE.md` (EN + ES footer)
+- `docs/i18n/zh-CN/adopters/CLI-REFERENCE.md` (zh-CN — versioning table)
+- `README.md`, `docs/i18n/es/README.md`, and `docs/i18n/zh-CN/README.md` (versioning tables)
+- `dist/.devtrail/00-governance/QUICK-REFERENCE.md` (EN + ES + zh-CN footer)
+- `dist/.devtrail/00-governance/AGENT-RULES.md` (EN + ES + zh-CN footer)
+- `dist/.devtrail/00-governance/DOCUMENTATION-POLICY.md` (EN + ES + zh-CN footer)
+- `dist/.devtrail/00-governance/C4-DIAGRAM-GUIDE.md` (EN + ES + zh-CN footer)
 
 Update `CHANGELOG.md` (root) following [Keep a Changelog](https://keepachangelog.com/en/1.1.0/) format:
 - Add a new `## Framework X.Y.Z` section at the top (below the header)

CODE_OF_CONDUCT.md

@@ -1,6 +1,6 @@
 # Contributor Covenant Code of Conduct
 
-**Languages**: English | [Español](docs/i18n/es/CODE_OF_CONDUCT.md)
+**Languages**: English | [Español](docs/i18n/es/CODE_OF_CONDUCT.md) | [简体中文](docs/i18n/zh-CN/CODE_OF_CONDUCT.md)
 
 ## Our Pledge
 

CONTRIBUTING.md

@@ -2,7 +2,7 @@
 
 Thank you for your interest in contributing to DevTrail! This document provides guidelines and information for contributors.
 
-**Languages**: English | [Español](docs/i18n/es/CONTRIBUTING.md)
+**Languages**: English | [Español](docs/i18n/es/CONTRIBUTING.md) | [简体中文](docs/i18n/zh-CN/CONTRIBUTING.md)
 
 ## Table of Contents
 

README.md

@@ -15,7 +15,7 @@
 [Documentation](#documentation) •
 [Contributing](#contributing)
 
-**Languages**: English | [Español](docs/i18n/es/README.md)
+**Languages**: English | [Español](docs/i18n/es/README.md) | [简体中文](docs/i18n/zh-CN/README.md)
 
 </div>
 

cli/src/commands/new.rs

@@ -173,12 +173,12 @@ fn resolve_template_path(
     lang: &str,
 ) -> PathBuf {
     let template_name = format!("TEMPLATE-{}.md", doc_type.prefix());
-    if lang == "es" {
-        let es_path = devtrail_dir
-            .join("templates/i18n/es")
+    if lang != "en" {
+        let i18n_path = devtrail_dir
+            .join(format!("templates/i18n/{}", lang))
             .join(&template_name);
-        if es_path.exists() {
-            return es_path;
+        if i18n_path.exists() {
+            return i18n_path;
         }
     }
     devtrail_dir.join("templates").join(&template_name)

cli/src/config.rs

@@ -5,7 +5,7 @@ use std::path::Path;
 /// DevTrail project configuration from .devtrail/config.yml
 #[derive(Debug, Deserialize, Serialize)]
 pub struct DevTrailConfig {
-    /// Language setting: "en" or "es"
+    /// Language setting: "en", "es", or "zh-CN"
     #[serde(default = "default_language")]
     pub language: String,
     /// Complexity analysis settings

dist/.devtrail/00-governance/AGENT-RULES.md

@@ -2,6 +2,8 @@
 
 > This document defines the rules that all AI agents must follow when working on projects under DevTrail.
 
+**Languages**: English | [Español](i18n/es/AGENT-RULES.md) | [简体中文](i18n/zh-CN/AGENT-RULES.md)
+
 ---
 
 ## 1. Mandatory Identification

dist/.devtrail/00-governance/C4-DIAGRAM-GUIDE.md

@@ -2,7 +2,7 @@
 
 > This guide explains how to use the C4 Model with Mermaid syntax in DevTrail documents, particularly in ADR (Architecture Decision Record) documents.
 
-**Languages**: English | [Español](i18n/es/C4-DIAGRAM-GUIDE.md)
+**Languages**: English | [Español](i18n/es/C4-DIAGRAM-GUIDE.md) | [简体中文](i18n/zh-CN/C4-DIAGRAM-GUIDE.md)
 
 ---
 

dist/.devtrail/00-governance/DOCUMENTATION-POLICY.md

@@ -1,5 +1,7 @@
 # Documentation Policy - DevTrail
 
+**Languages**: English | [Español](i18n/es/DOCUMENTATION-POLICY.md) | [简体中文](i18n/zh-CN/DOCUMENTATION-POLICY.md)
+
 ## Governance Framework
 
 This policy aligns DevTrail documentation with **ISO/IEC 42001:2023** (vertebral standard for AI Management Systems) and operationalizes:

dist/.devtrail/00-governance/PRINCIPLES.md

@@ -2,6 +2,8 @@
 
 > These principles guide all documentation decisions in the project.
 
+**Languages**: English | [Español](i18n/es/PRINCIPLES.md) | [简体中文](i18n/zh-CN/PRINCIPLES.md)
+
 ---
 
 ## 1. Total Traceability