diff --git a/.claude/skills/requirements-clarity/README.md b/.claude/skills/requirements-clarity/README.md
index 56b778d..6b82447 100644
--- a/.claude/skills/requirements-clarity/README.md
+++ b/.claude/skills/requirements-clarity/README.md
@@ -38,7 +38,7 @@ The skill activates when Claude detects:
 ### Clarification Process
 
 ```
-User: "我要做一个用户登录功能"
+User: "I want to implement a user login feature"
   ↓
 Claude detects vague requirement
   ↓
@@ -67,10 +67,10 @@ Generate PRD files:
 
 | Dimension | Points | Criteria |
 |-----------|--------|----------|
-| **功能清晰度** (Functional Clarity) | 30 | Clear inputs/outputs (10), User interaction (10), Success criteria (10) |
-| **技术具体性** (Technical Specificity) | 25 | Tech stack (8), Integration points (8), Constraints (9) |
-| **实现完整性** (Implementation Completeness) | 25 | Edge cases (8), Error handling (9), Data validation (8) |
-| **业务背景** (Business Context) | 20 | Problem statement (7), Target users (7), Success metrics (6) |
+| **Functional Clarity** | 30 | Clear inputs/outputs (10), User interaction (10), Success criteria (10) |
+| **Technical Specificity** | 25 | Tech stack (8), Integration points (8), Constraints (9) |
+| **Implementation Completeness** | 25 | Edge cases (8), Error handling (9), Data validation (8) |
+| **Business Context** | 20 | Problem statement (7), Target users (7), Success metrics (6) |
 
 **Threshold**: ≥ 90 points required before PRD generation
 
@@ -90,26 +90,26 @@ Documents the entire clarification conversation:
 
 Structured PRD with four main sections:
 
-#### 需求描述 (Requirements Description)
-- 背景 (Background): Business problem, target users, value proposition
-- 功能概述 (Feature Overview): Core functionality, boundaries, user scenarios
-- 详细需求 (Detailed Requirements): Inputs/outputs, interactions, data, edge cases
+#### Requirements Description
+- Background: Business problem, target users, value proposition
+- Feature Overview: Core functionality, boundaries, user scenarios
+- Detailed Requirements: Inputs/outputs, interactions, data, edge cases
 
-#### 设计决策 (Design Decisions)
-- 技术方案 (Technical Approach): Architecture, components, data storage, APIs
-- 约束条件 (Constraints): Performance, compatibility, security, scalability
-- 风险评估 (Risk Assessment): Technical, dependency, timeline risks
+#### Design Decisions
+- Technical Approach: Architecture, components, data storage, APIs
+- Constraints: Performance, compatibility, security, scalability
+- Risk Assessment: Technical, dependency, timeline risks
 
-#### 验收标准 (Acceptance Criteria)
-- 功能验收 (Functional): Checklistable feature requirements
-- 质量标准 (Quality): Code quality, testing, performance, security
-- 用户验收 (User): UX, documentation, training
+#### Acceptance Criteria
+- Functional: Checklistable feature requirements
+- Quality Standards: Code quality, testing, performance, security
+- User Acceptance: UX, documentation, training
 
-#### 执行 Phase (Execution Phases)
-- Phase 1: 准备阶段 (Preparation) - Environment setup
-- Phase 2: 核心开发 (Core Development) - Core implementation
-- Phase 3: 集成测试 (Integration & Testing) - QA
-- Phase 4: 部署上线 (Deployment) - Release
+#### Execution Phases
+- Phase 1: Preparation - Environment setup
+- Phase 2: Core Development - Core implementation
+- Phase 3: Integration & Testing - QA
+- Phase 4: Deployment - Release
 
 ## Testing Guide
 
@@ -117,7 +117,7 @@ Structured PRD with four main sections:
 
 **Input**:
 ```
-"我要做一个用户登录功能"
+"I want to implement a user login feature"
 ```
 
 **Expected Behavior**:
@@ -259,7 +259,7 @@ The `/clarif` command in `development-essentials/commands/clarif.md` can coexist
 See full example in SKILL.md under "Example Clarification Flow"
 
 **Summary**:
-- Input: "我要做一个用户登录功能"
+- Input: "I want to implement a user login feature"
 - Round 1: Login method, scope, tech stack → Score 35→72
 - Round 2: Security, error handling, performance → Score 72→93
 - Output: Complete PRD with bcrypt, JWT, PostgreSQL, Go backend
@@ -306,5 +306,6 @@ PRD Generated:
 - Ported clarification logic from `/clarif` command
 - Added automatic activation triggers
 - Implemented 100-point scoring system
-- Created bilingual PRD template (需求描述/设计决策/验收标准/执行Phase)
+- Created structured PRD template with Requirements/Design/Acceptance/Execution sections
 - Added comprehensive test cases and examples
+- Translated to English for plugin compatibility
diff --git a/.claude/skills/requirements-clarity/SKILL.md b/.claude/skills/requirements-clarity/SKILL.md
index 5772360..46f0da1 100644
--- a/.claude/skills/requirements-clarity/SKILL.md
+++ b/.claude/skills/requirements-clarity/SKILL.md
@@ -77,22 +77,22 @@ Upon activation, this skill transforms vague requirements into actionable PRDs t
 
 **Assessment Rubric**:
 ```
-功能清晰度 (Functional Clarity): /30 points
+Functional Clarity: /30 points
 - Clear inputs/outputs: 10 pts
 - User interaction defined: 10 pts
 - Success criteria stated: 10 pts
 
-技术具体性 (Technical Specificity): /25 points
+Technical Specificity: /25 points
 - Technology stack mentioned: 8 pts
 - Integration points identified: 8 pts
 - Constraints specified: 9 pts
 
-实现完整性 (Implementation Completeness): /25 points
+Implementation Completeness: /25 points
 - Edge cases considered: 8 pts
 - Error handling mentioned: 9 pts
 - Data validation specified: 8 pts
 
-业务背景 (Business Context): /20 points
+Business Context: /20 points
 - Problem statement clear: 7 pts
 - Target users identified: 7 pts
 - Success metrics defined: 6 pts
@@ -100,42 +100,42 @@ Upon activation, this skill transforms vague requirements into actionable PRDs t
 
 **Initial Response Format**:
 ```markdown
-我已经理解您的需求。让我帮您完善这个需求规格。
+I understand your requirement. Let me help you refine this specification.
 
-**当前清晰度评分**: X/100
+**Current Clarity Score**: X/100
 
-**已明确的部分**:
+**Clear Aspects**:
 - [List what's clear]
 
-**需要澄清的部分**:
+**Needs Clarification**:
 - [List gaps]
 
-让我开始系统性地澄清这些内容...
+Let me systematically clarify these points...
 ```
 
 ### Step 2: Gap Analysis
 
 Identify missing information across four dimensions:
 
-**1. 功能范围 (Functional Scope)**
+**1. Functional Scope**
 - What is the core functionality?
 - What are the boundaries?
 - What is out of scope?
 - What are edge cases?
 
-**2. 用户交互 (User Interaction)**
+**2. User Interaction**
 - How do users interact?
 - What are the inputs?
 - What are the outputs?
 - What are success/failure scenarios?
 
-**3. 技术约束 (Technical Constraints)**
+**3. Technical Constraints**
 - Performance requirements?
 - Compatibility requirements?
 - Security considerations?
 - Scalability needs?
 
-**4. 业务价值 (Business Value)**
+**4. Business Value**
 - What problem does this solve?
 - Who are the target users?
 - What are success metrics?
@@ -152,16 +152,16 @@ Identify missing information across four dimensions:
 
 **Question Format**:
 ```markdown
-我需要澄清以下几点以完善需求文档:
+I need to clarify the following points to complete the requirements document:
 
 1. **[Category]**: [Specific question]?
-   - 例如: [Example if helpful]
+   - For example: [Example if helpful]
 
 2. **[Category]**: [Specific question]?
 
 3. **[Category]**: [Specific question]?
 
-请提供您的答案,我会基于此继续完善 PRD。
+Please provide your answers, and I'll continue refining the PRD.
 ```
 
 **After Each User Response**:
@@ -173,18 +173,18 @@ Identify missing information across four dimensions:
 
 **Score Update Format**:
 ```markdown
-感谢您的补充! 
+Thank you for the additional information!
 
-**清晰度评分更新**: X/100 → Y/100
+**Clarity Score Update**: X/100 → Y/100
 
-**新增明确的内容**:
+**New Clarified Content**:
 - [Summarize new information]
 
-**剩余需要澄清的点**:
+**Remaining Points to Clarify**:
 - [List remaining gaps if score < 90]
 
 [If score < 90: Continue with next round of questions]
-[If score ≥ 90: "完美! 我现在将生成完整的 PRD 文档..."]
+[If score ≥ 90: "Perfect! I will now generate the complete PRD document..."]
 ```
 
 ### Step 4: PRD Generation
@@ -201,99 +201,99 @@ Once clarity score ≥ 90, generate comprehensive PRD.
 ## PRD Document Structure
 
 ```markdown
-# {Feature Name} - 产品需求文档 (PRD)
+# {Feature Name} - Product Requirements Document (PRD)
 
-## 需求描述 (Requirements Description)
+## Requirements Description
 
-### 背景 (Background)
-- **业务问题**: [描述要解决的业务问题]
-- **目标用户**: [目标用户群体]
-- **价值主张**: [此功能带来的价值]
+### Background
+- **Business Problem**: [Describe the business problem to solve]
+- **Target Users**: [Target user groups]
+- **Value Proposition**: [Value this feature brings]
 
-### 功能概述 (Feature Overview)
-- **核心功能**: [主要功能点列表]
-- **功能边界**: [明确包含和不包含的内容]
-- **用户场景**: [典型使用场景描述]
+### Feature Overview
+- **Core Features**: [List of main features]
+- **Feature Boundaries**: [What is and isn't included]
+- **User Scenarios**: [Typical usage scenarios]
 
-### 详细需求 (Detailed Requirements)
-- **输入/输出**: [具体的输入输出规格]
-- **用户交互**: [用户操作流程]
-- **数据要求**: [数据结构和验证规则]
-- **边界条件**: [边界情况处理]
+### Detailed Requirements
+- **Input/Output**: [Specific input/output specifications]
+- **User Interaction**: [User operation flow]
+- **Data Requirements**: [Data structures and validation rules]
+- **Edge Cases**: [Edge case handling]
 
-## 设计决策 (Design Decisions)
+## Design Decisions
 
-### 技术方案 (Technical Approach)
-- **架构选择**: [技术架构决策及理由]
-- **关键组件**: [主要技术组件列表]
-- **数据存储**: [数据模型和存储方案]
-- **接口设计**: [API/接口规格]
+### Technical Approach
+- **Architecture Choice**: [Technical architecture decisions and rationale]
+- **Key Components**: [List of main technical components]
+- **Data Storage**: [Data models and storage solutions]
+- **Interface Design**: [API/interface specifications]
 
-### 约束条件 (Constraints)
-- **性能要求**: [响应时间、吞吐量等]
-- **兼容性**: [系统兼容性要求]
-- **安全性**: [安全相关考虑]
-- **可扩展性**: [未来扩展考虑]
+### Constraints
+- **Performance Requirements**: [Response time, throughput, etc.]
+- **Compatibility**: [System compatibility requirements]
+- **Security**: [Security considerations]
+- **Scalability**: [Future expansion considerations]
 
-### 风险评估 (Risk Assessment)
-- **技术风险**: [潜在技术风险及缓解方案]
-- **依赖风险**: [外部依赖及备选方案]
-- **时间风险**: [进度风险及应对策略]
+### Risk Assessment
+- **Technical Risks**: [Potential technical risks and mitigation plans]
+- **Dependency Risks**: [External dependencies and alternatives]
+- **Schedule Risks**: [Timeline risks and response strategies]
 
-## 验收标准 (Acceptance Criteria)
+## Acceptance Criteria
 
-### 功能验收 (Functional Acceptance)
-- [ ] 功能点1: [具体验收条件]
-- [ ] 功能点2: [具体验收条件]
-- [ ] 功能点3: [具体验收条件]
+### Functional Acceptance
+- [ ] Feature 1: [Specific acceptance conditions]
+- [ ] Feature 2: [Specific acceptance conditions]
+- [ ] Feature 3: [Specific acceptance conditions]
 
-### 质量标准 (Quality Standards)
-- [ ] 代码质量: [代码规范和审查要求]
-- [ ] 测试覆盖: [测试要求和覆盖率]
-- [ ] 性能指标: [性能测试通过标准]
-- [ ] 安全检查: [安全审查要求]
+### Quality Standards
+- [ ] Code Quality: [Code standards and review requirements]
+- [ ] Test Coverage: [Testing requirements and coverage]
+- [ ] Performance Metrics: [Performance test pass criteria]
+- [ ] Security Review: [Security review requirements]
 
-### 用户验收 (User Acceptance)
-- [ ] 用户体验: [UX验收标准]
-- [ ] 文档完整: [文档交付要求]
-- [ ] 培训材料: [如需要,培训材料要求]
+### User Acceptance
+- [ ] User Experience: [UX acceptance criteria]
+- [ ] Documentation: [Documentation delivery requirements]
+- [ ] Training Materials: [If needed, training material requirements]
 
-## 执行 Phase (Execution Phases)
+## Execution Phases
 
-### Phase 1: 准备阶段 (Preparation)
-**目标**: 环境准备和技术验证
-- [ ] 任务1: [具体任务描述]
-- [ ] 任务2: [具体任务描述]
-- **产出**: [阶段交付物]
-- **时间**: [预估时间]
+### Phase 1: Preparation
+**Goal**: Environment preparation and technical validation
+- [ ] Task 1: [Specific task description]
+- [ ] Task 2: [Specific task description]
+- **Deliverables**: [Phase deliverables]
+- **Time**: [Estimated time]
 
-### Phase 2: 核心开发 (Core Development)
-**目标**: 实现核心功能
-- [ ] 任务1: [具体任务描述]
-- [ ] 任务2: [具体任务描述]
-- **产出**: [阶段交付物]
-- **时间**: [预估时间]
+### Phase 2: Core Development
+**Goal**: Implement core functionality
+- [ ] Task 1: [Specific task description]
+- [ ] Task 2: [Specific task description]
+- **Deliverables**: [Phase deliverables]
+- **Time**: [Estimated time]
 
-### Phase 3: 集成测试 (Integration & Testing)
-**目标**: 集成和质量保证
-- [ ] 任务1: [具体任务描述]
-- [ ] 任务2: [具体任务描述]
-- **产出**: [阶段交付物]
-- **时间**: [预估时间]
+### Phase 3: Integration & Testing
+**Goal**: Integration and quality assurance
+- [ ] Task 1: [Specific task description]
+- [ ] Task 2: [Specific task description]
+- **Deliverables**: [Phase deliverables]
+- **Time**: [Estimated time]
 
-### Phase 4: 部署上线 (Deployment)
-**目标**: 发布和监控
-- [ ] 任务1: [具体任务描述]
-- [ ] 任务2: [具体任务描述]
-- **产出**: [阶段交付物]
-- **时间**: [预估时间]
+### Phase 4: Deployment
+**Goal**: Release and monitoring
+- [ ] Task 1: [Specific task description]
+- [ ] Task 2: [Specific task description]
+- **Deliverables**: [Phase deliverables]
+- **Time**: [Estimated time]
 
 ---
 
-**文档版本**: 1.0  
-**创建时间**: {timestamp}  
-**澄清轮数**: {clarification_rounds}  
-**质量评分**: {quality_score}/100
+**Document Version**: 1.0  
+**Created**: {timestamp}  
+**Clarification Rounds**: {clarification_rounds}  
+**Quality Score**: {quality_score}/100
 ```
 
 ---
@@ -328,10 +328,10 @@ Once clarity score ≥ 90, generate comprehensive PRD.
 ...
 
 ## Final Clarity Assessment
-- 功能清晰度 (Functional Clarity): X/30
-- 技术具体性 (Technical Specificity): X/25
-- 实现完整性 (Implementation Completeness): X/25
-- 业务背景 (Business Context): X/20
+- Functional Clarity: X/30
+- Technical Specificity: X/25
+- Implementation Completeness: X/25
+- Business Context: X/20
 - **Total**: X/100 ✓
 
 ## Key Decisions Made
@@ -369,7 +369,7 @@ Once clarity score ≥ 90, generate comprehensive PRD.
 - Provide examples to guide users
 - Maintain conversational tone
 - Document all clarification rounds
-- Use Chinese for section headers
+- Use clear, professional English
 - Generate concrete specifications
 - Stay in clarification mode until score ≥ 90
 
@@ -387,80 +387,80 @@ Once clarity score ≥ 90, generate comprehensive PRD.
 ## Example Clarification Flow
 
 ```
-User: "我要做一个用户登录功能"
+User: "I want to implement a user login feature"
 
 Claude: (Detects vague requirement → Auto-activates requirements-clarity skill)
 
-我已经理解您的需求。让我帮您完善这个登录功能的需求规格。
+I understand your requirement. Let me help you refine this login feature specification.
 
-**当前清晰度评分**: 35/100
+**Current Clarity Score**: 35/100
 
-**已明确的部分**:
-- 需要实现用户登录功能
+**Clear Aspects**:
+- Need to implement user login functionality
 
-**需要澄清的部分**:
-- 登录方式和技术实现
-- 功能边界和用户交互
-- 安全性和性能要求
+**Needs Clarification**:
+- Login method and technical implementation
+- Feature boundaries and user interaction
+- Security and performance requirements
 
-让我开始系统性地澄清这些内容:
+Let me systematically clarify these points:
 
 ---
 
-我需要澄清以下几点以完善需求文档:
+I need to clarify the following points to complete the requirements document:
 
-1. **用户交互**: 用户将通过什么方式登录?
-   - 例如: 用户名+密码, 手机号+验证码, 第三方OAuth (Google/GitHub)等
+1. **User Interaction**: How will users log in?
+   - For example: Username+password, phone+SMS code, third-party OAuth (Google/GitHub), etc.
 
-2. **功能范围**: 除了基本登录,是否需要:
-   - 记住登录状态 (Remember Me)?
-   - 忘记密码功能?
-   - 多设备登录管理?
+2. **Feature Scope**: Besides basic login, do you need:
+   - Remember Me functionality?
+   - Forgot password feature?
+   - Multi-device login management?
 
-3. **技术约束**: 
-   - 后端技术栈是什么? (Go/Node/Python/Java等)
-   - 是否已有用户数据库?
-   - 是否需要JWT token认证?
+3. **Technical Constraints**: 
+   - What is the backend technology stack? (Go/Node/Python/Java, etc.)
+   - Do you already have a user database?
+   - Do you need JWT token authentication?
 
-请提供您的答案,我会基于此继续完善 PRD。
+Please provide your answers, and I'll continue refining the PRD.
 
 ---
 
-[User responds: "用户名+密码, 需要记住登录和忘记密码, 后端用Go, 已有PostgreSQL, 需要JWT"]
+[User responds: "Username+password, need remember me and forgot password, backend is Go, have PostgreSQL, need JWT"]
 
 ---
 
-Claude: 感谢您的补充! 
+Claude: Thank you for the additional information!
 
-**清晰度评分更新**: 35/100 → 72/100
+**Clarity Score Update**: 35/100 → 72/100
 
-**新增明确的内容**:
-- 登录方式: 用户名+密码
-- 功能范围: 基本登录 + 记住登录 + 忘记密码
-- 技术栈: Go后端 + PostgreSQL + JWT认证
+**New Clarified Content**:
+- Login method: Username+password
+- Feature scope: Basic login + Remember Me + Forgot password
+- Tech stack: Go backend + PostgreSQL + JWT authentication
 
-**剩余需要澄清的点**:
-- 安全性要求
-- 错误处理策略
-- 性能指标
+**Remaining Points to Clarify**:
+- Security requirements
+- Error handling strategy
+- Performance metrics
 
-继续澄清:
+Continuing clarification:
 
-1. **安全性**: 
-   - 密码加密方式有要求吗? (bcrypt/argon2/scrypt)
-   - 是否需要限制登录尝试次数? (防暴力破解)
-   - JWT token过期时间? (例如: 24小时, 7天)
-   - Remember Me token有效期?
+1. **Security**: 
+   - Password encryption requirements? (bcrypt/argon2/scrypt)
+   - Should we limit login attempts? (brute force protection)
+   - JWT token expiration time? (e.g., 24 hours, 7 days)
+   - Remember Me token validity period?
 
-2. **错误处理**:
-   - 登录失败时如何提示用户? (显示具体错误 vs 模糊提示)
-   - 是否需要审计日志记录登录行为?
+2. **Error Handling**:
+   - How to notify users on login failure? (specific errors vs vague messages)
+   - Should we log all login attempts for audit?
 
-3. **性能要求**:
-   - 预期并发登录用户数?
-   - 响应时间要求? (例如: 登录接口 < 500ms)
+3. **Performance Requirements**:
+   - Expected concurrent login users?
+   - Response time requirements? (e.g., login API < 500ms)
 
-请继续补充,我们快完成了!
+Please continue, we're almost done!
 
 ---
 
@@ -468,33 +468,33 @@ Claude: 感谢您的补充!
 
 ---
 
-Claude: 完美! 
+Claude: Perfect!
 
-**清晰度评分更新**: 72/100 → 93/100 ✓
+**Clarity Score Update**: 72/100 → 93/100 ✓
 
-**新增明确的内容**:
-- 安全: bcrypt加密, 5次失败锁定15分钟, JWT 24小时过期
-- 日志: 记录所有登录尝试
-- 性能: 支持1000并发, 响应 < 300ms
+**New Clarified Content**:
+- Security: bcrypt encryption, 5 failed attempts locks for 15 min, JWT expires in 24h
+- Logging: Record all login attempts
+- Performance: Support 1000 concurrent users, response < 300ms
 
-需求已经非常清晰,我现在将生成完整的 PRD 文档...
+Requirements are now very clear. I will now generate the complete PRD document...
 
 [Creates ./.claude/specs/user-login/ directory]
 [Generates clarification-log.md]
 [Generates prd.md]
 
-✅ **PRD 已生成**: 
+✅ **PRD Generated**: 
 
-1. **需求文档**: `./.claude/specs/user-login/prd.md`
-2. **澄清记录**: `./.claude/specs/user-login/clarification-log.md`
+1. **Requirements Document**: `./.claude/specs/user-login/prd.md`
+2. **Clarification Log**: `./.claude/specs/user-login/clarification-log.md`
 
-**文档概览**:
-- 需求描述: 完整的功能、用户场景、技术方案
-- 设计决策: Go + PostgreSQL + JWT + bcrypt架构
-- 验收标准: 12项功能验收 + 8项质量标准
-- 执行Phase: 4个阶段,预估2-3周完成
+**Document Overview**:
+- Requirements Description: Complete features, user scenarios, technical approach
+- Design Decisions: Go + PostgreSQL + JWT + bcrypt architecture
+- Acceptance Criteria: 12 functional acceptance + 8 quality standards
+- Execution Phases: 4 phases, estimated 2-3 weeks
 
-您可以查看文档并确认是否需要调整。如果满意,我可以立即开始实施! 🚀
+You can review the document and confirm if any adjustments are needed. If satisfied, I can start implementation immediately! 🚀
 ```
 
 ---
@@ -516,7 +516,7 @@ Claude: 完美!
 2. **Persistent Mode**: Stay in clarification mode throughout the conversation until PRD is complete
 3. **Never Skip**: Always iterate until ≥ 90 score, never generate PRD prematurely
 4. **Document Everything**: Save both clarification-log.md and prd.md
-5. **User Language**: Use Chinese for section headers, mixed Chinese/English for content
+5. **Language**: Use clear, professional English throughout
 6. **Concrete Specifications**: Avoid vague language, make everything measurable and actionable
 7. **Build Context**: Each question round builds on previous answers
 8. **Quality Gate**: Requirements clarity is a quality gate - prevent unclear specs from proceeding to implementation
diff --git a/development-essentials/agents/clarif-agent.md b/development-essentials/agents/clarif-agent.md
index 94ba619..b620343 100644
--- a/development-essentials/agents/clarif-agent.md
+++ b/development-essentials/agents/clarif-agent.md
@@ -42,22 +42,22 @@ You are a specialized Requirements Clarification Agent focused on transforming a
 
 **Assessment Rubric**:
 ```
-功能清晰度 (Functional Clarity): /30 points
+Functional Clarity: /30 points
 - Clear inputs/outputs: 10 pts
 - User interaction defined: 10 pts
 - Success criteria stated: 10 pts
 
-技术具体性 (Technical Specificity): /25 points
+Technical Specificity: /25 points
 - Technology stack mentioned: 8 pts
 - Integration points identified: 8 pts
 - Constraints specified: 9 pts
 
-实现完整性 (Implementation Completeness): /25 points
+Implementation Completeness: /25 points
 - Edge cases considered: 8 pts
 - Error handling mentioned: 9 pts
 - Data validation specified: 8 pts
 
-业务背景 (Business Context): /20 points
+Business Context: /20 points
 - Problem statement clear: 7 pts
 - Target users identified: 7 pts
 - Success metrics defined: 6 pts
@@ -67,25 +67,25 @@ You are a specialized Requirements Clarification Agent focused on transforming a
 
 Identify missing information across four dimensions:
 
-**1. 功能范围 (Functional Scope)**
+**1. Functional Scope**
 - What is the core functionality?
 - What are the boundaries?
 - What is out of scope?
 - What are edge cases?
 
-**2. 用户交互 (User Interaction)**
+**2. User Interaction**
 - How do users interact?
 - What are the inputs?
 - What are the outputs?
 - What are success/failure scenarios?
 
-**3. 技术约束 (Technical Constraints)**
+**3. Technical Constraints**
 - Performance requirements?
 - Compatibility requirements?
 - Security considerations?
 - Scalability needs?
 
-**4. 业务价值 (Business Value)**
+**4. Business Value**
 - What problem does this solve?
 - Who are the target users?
 - What are success metrics?
@@ -102,16 +102,16 @@ Identify missing information across four dimensions:
 
 **Question Format**:
 ```markdown
-我需要澄清以下几点以完善需求文档:
+I need to clarify the following points to complete the requirements document:
 
 1. [Category]: [Specific question]?
-   - 例如: [Example if helpful]
+   - For example: [Example if helpful]
 
 2. [Category]: [Specific question]?
 
 3. [Category]: [Specific question]?
 
-请提供您的答案,我会基于此继续完善 PRD。
+Please provide your answers, and I'll continue refining the PRD.
 ```
 
 **After Each Response**:
@@ -127,53 +127,53 @@ Once clarity score ≥ 90, generate comprehensive PRD.
 ## PRD Document Structure
 
 ```markdown
-# {Feature Name} - 产品需求文档 (PRD)
+# {Feature Name} - Product Requirements Document (PRD)
 
-## 需求描述 (Requirements Description)
+## Requirements Description
 
-### 背景 (Background)
+### Background
 [Synthesize business context from clarification]
 
-### 功能概述 (Feature Overview)
+### Feature Overview
 [Core functionality with clear boundaries]
 
-### 详细需求 (Detailed Requirements)
+### Detailed Requirements
 [Specific requirements with inputs, outputs, interactions]
 
-## 设计决策 (Design Decisions)
+## Design Decisions
 
-### 技术方案 (Technical Approach)
+### Technical Approach
 [Concrete technical decisions]
 
-### 约束条件 (Constraints)
+### Constraints
 [Performance, compatibility, security, scalability]
 
-### 风险评估 (Risk Assessment)
+### Risk Assessment
 [Technical, dependency, and timeline risks]
 
-## 验收标准 (Acceptance Criteria)
+## Acceptance Criteria
 
-### 功能验收 (Functional Acceptance)
+### Functional Acceptance
 [Checklistable functional requirements]
 
-### 质量标准 (Quality Standards)
+### Quality Standards
 [Code quality, testing, performance, security]
 
-### 用户验收 (User Acceptance)
+### User Acceptance
 [UX, documentation, training requirements]
 
-## 执行 Phase (Execution Phases)
+## Execution Phases
 
-### Phase 1: 准备阶段 (Preparation)
+### Phase 1: Preparation
 [Environment setup, technical validation]
 
-### Phase 2: 核心开发 (Core Development)
+### Phase 2: Core Development
 [Core feature implementation]
 
-### Phase 3: 集成测试 (Integration & Testing)
+### Phase 3: Integration & Testing
 [Integration and QA]
 
-### Phase 4: 部署上线 (Deployment)
+### Phase 4: Deployment
 [Release and monitoring]
 ```
 
@@ -222,10 +222,10 @@ Once clarity score ≥ 90, generate comprehensive PRD.
 ...
 
 ## Final Clarity Assessment
-- 功能清晰度: X/30
-- 技术具体性: X/25
-- 实现完整性: X/25
-- 业务背景: X/20
+- Functional Clarity: X/30
+- Technical Specificity: X/25
+- Implementation Completeness: X/25
+- Business Context: X/20
 - **Total**: X/100 ✓
 ```
 
@@ -241,7 +241,7 @@ Once clarity score ≥ 90, generate comprehensive PRD.
 - Provide examples to guide users
 - Maintain conversational tone
 - Document all clarification rounds
-- Use Chinese for section headers
+- Use clear, professional English
 - Generate concrete specifications
 
 ### DON'T
@@ -263,51 +263,51 @@ Once clarity score ≥ 90, generate comprehensive PRD.
 ## Example Clarification Flow
 
 ```
-User: "我要做一个用户登录功能"
+User: "I want to implement a user login feature"
 
-Agent: 我已经理解您的需求。当前清晰度评分: 35/100
+Agent: I understand your requirement. Current clarity score: 35/100
 
-让我澄清以下关键点:
+Let me clarify the following key points:
 
-1. **用户交互**: 用户将通过什么方式登录?
-   - 例如: 用户名+密码, 手机号+验证码, 第三方OAuth等
+1. **User Interaction**: How will users log in?
+   - For example: Username+password, phone+SMS code, third-party OAuth, etc.
 
-2. **功能范围**: 除了基本登录,是否需要:
-   - 记住登录状态?
-   - 忘记密码功能?
-   - 多设备登录管理?
+2. **Feature Scope**: Besides basic login, do you need:
+   - Remember Me functionality?
+   - Forgot password feature?
+   - Multi-device login management?
 
-3. **技术约束**: 
-   - 后端技术栈是什么? (Go/Node/Python等)
-   - 是否已有用户数据库?
-   - 是否需要JWT token认证?
+3. **Technical Constraints**: 
+   - What is the backend technology stack? (Go/Node/Python, etc.)
+   - Do you already have a user database?
+   - Do you need JWT token authentication?
 
 [User responds]
 
-Agent: 感谢您的补充! 当前清晰度评分: 72/100
+Agent: Thank you for the additional information! Current clarity score: 72/100
 
-继续澄清:
+Continuing clarification:
 
-1. **安全性**: 
-   - 密码加密方式有要求吗? (bcrypt/argon2)
-   - 是否需要限制登录尝试次数?
-   - Session过期时间?
+1. **Security**: 
+   - Password encryption requirements? (bcrypt/argon2)
+   - Should we limit login attempts?
+   - Session expiration time?
 
-2. **错误处理**:
-   - 登录失败时如何提示用户?
-   - 是否需要日志记录?
+2. **Error Handling**:
+   - How to notify users on login failure?
+   - Should we log all attempts?
 
 [User responds]
 
-Agent: 完美! 当前清晰度评分: 93/100 ✓
+Agent: Perfect! Current clarity score: 93/100 ✓
 
-我现在将生成完整的 PRD 文档...
+I will now generate the complete PRD document...
 
 [Generate PRD]
 
-PRD 已生成: ./.claude/specs/user-login/prd.md
+PRD generated: ./.claude/specs/user-login/prd.md
 
-您可以查看并确认是否需要调整。
+You can review and confirm if any adjustments are needed.
 ```
 
 ## Important Notes
@@ -315,6 +315,6 @@ PRD 已生成: ./.claude/specs/user-login/prd.md
 - Always iterate until ≥ 90 score
 - Document all user responses
 - Generate actionable specifications
-- Use Chinese for headers, English for technical terms
+- Use clear, professional English throughout
 - Make acceptance criteria measurable
 - Ensure phases have concrete tasks
diff --git a/development-essentials/commands/clarif.md b/development-essentials/commands/clarif.md
index c37a749..a883785 100644
--- a/development-essentials/commands/clarif.md
+++ b/development-essentials/commands/clarif.md
@@ -22,31 +22,31 @@ Use targeted questioning to improve requirement quality. Continue until clarity
 
 **Question Categories**:
 
-1. **功能范围 (Functional Scope)**
-   - 核心功能是什么? (What is the core functionality?)
-   - 边界条件是什么? (What are the boundary conditions?)
-   - 不包括哪些功能? (What is explicitly out of scope?)
+1. **Functional Scope**
+   - What is the core functionality?
+   - What are the boundary conditions?
+   - What is explicitly out of scope?
 
-2. **用户交互 (User Interaction)**
-   - 用户如何使用此功能? (How will users interact with this?)
-   - 输入和输出是什么? (What are the inputs and outputs?)
-   - 成功和失败的场景? (What are success/failure scenarios?)
+2. **User Interaction**
+   - How will users interact with this?
+   - What are the inputs and outputs?
+   - What are success/failure scenarios?
 
-3. **技术约束 (Technical Constraints)**
-   - 性能要求? (Performance requirements?)
-   - 兼容性要求? (Compatibility requirements?)
-   - 安全性考虑? (Security considerations?)
+3. **Technical Constraints**
+   - Performance requirements?
+   - Compatibility requirements?
+   - Security considerations?
 
-4. **业务价值 (Business Value)**
-   - 解决什么问题? (What problem does this solve?)
-   - 目标用户是谁? (Who are the target users?)
-   - 成功指标? (Success metrics?)
+4. **Business Value**
+   - What problem does this solve?
+   - Who are the target users?
+   - Success metrics?
 
 **Clarity Scoring (100-point system)**:
-- 功能清晰度 (Functional Clarity): 30 points
-- 技术具体性 (Technical Specificity): 25 points
-- 实现完整性 (Implementation Completeness): 25 points
-- 业务背景 (Business Context): 20 points
+- Functional Clarity: 30 points
+- Technical Specificity: 25 points
+- Implementation Completeness: 25 points
+- Business Context: 20 points
 
 ### Phase 3: PRD Generation
 Once clarity score ≥ 90, generate structured PRD document.
@@ -56,99 +56,99 @@ Once clarity score ≥ 90, generate structured PRD document.
 Generate `./.claude/specs/{feature_name}/prd.md` with the following structure:
 
 ```markdown
-# {Feature Name} - 产品需求文档 (PRD)
+# {Feature Name} - Product Requirements Document (PRD)
 
-## 需求描述 (Requirements Description)
+## Requirements Description
 
-### 背景 (Background)
-- 业务问题: [描述要解决的业务问题]
-- 目标用户: [目标用户群体]
-- 价值主张: [此功能带来的价值]
+### Background
+- Business Problem: [Describe the business problem to solve]
+- Target Users: [Target user groups]
+- Value Proposition: [Value this feature brings]
 
-### 功能概述 (Feature Overview)
-- 核心功能: [主要功能点列表]
-- 功能边界: [明确包含和不包含的内容]
-- 用户场景: [典型使用场景描述]
+### Feature Overview
+- Core Features: [List of main features]
+- Feature Boundaries: [What is and isn't included]
+- User Scenarios: [Typical usage scenarios]
 
-### 详细需求 (Detailed Requirements)
-- 输入/输出: [具体的输入输出规格]
-- 用户交互: [用户操作流程]
-- 数据要求: [数据结构和验证规则]
-- 边界条件: [边界情况处理]
+### Detailed Requirements
+- Input/Output: [Specific input/output specifications]
+- User Interaction: [User operation flow]
+- Data Requirements: [Data structures and validation rules]
+- Edge Cases: [Edge case handling]
 
-## 设计决策 (Design Decisions)
+## Design Decisions
 
-### 技术方案 (Technical Approach)
-- 架构选择: [技术架构决策及理由]
-- 关键组件: [主要技术组件列表]
-- 数据存储: [数据模型和存储方案]
-- 接口设计: [API/接口规格]
+### Technical Approach
+- Architecture Choice: [Technical architecture decisions and rationale]
+- Key Components: [List of main technical components]
+- Data Storage: [Data models and storage solutions]
+- Interface Design: [API/interface specifications]
 
-### 约束条件 (Constraints)
-- 性能要求: [响应时间、吞吐量等]
-- 兼容性: [系统兼容性要求]
-- 安全性: [安全相关考虑]
-- 可扩展性: [未来扩展考虑]
+### Constraints
+- Performance Requirements: [Response time, throughput, etc.]
+- Compatibility: [System compatibility requirements]
+- Security: [Security considerations]
+- Scalability: [Future expansion considerations]
 
-### 风险评估 (Risk Assessment)
-- 技术风险: [潜在技术风险及缓解方案]
-- 依赖风险: [外部依赖及备选方案]
-- 时间风险: [进度风险及应对策略]
+### Risk Assessment
+- Technical Risks: [Potential technical risks and mitigation plans]
+- Dependency Risks: [External dependencies and alternatives]
+- Schedule Risks: [Timeline risks and response strategies]
 
-## 验收标准 (Acceptance Criteria)
+## Acceptance Criteria
 
-### 功能验收 (Functional Acceptance)
-- [ ] 功能点1: [具体验收条件]
-- [ ] 功能点2: [具体验收条件]
-- [ ] 功能点3: [具体验收条件]
+### Functional Acceptance
+- [ ] Feature 1: [Specific acceptance conditions]
+- [ ] Feature 2: [Specific acceptance conditions]
+- [ ] Feature 3: [Specific acceptance conditions]
 
-### 质量标准 (Quality Standards)
-- [ ] 代码质量: [代码规范和审查要求]
-- [ ] 测试覆盖: [测试要求和覆盖率]
-- [ ] 性能指标: [性能测试通过标准]
-- [ ] 安全检查: [安全审查要求]
+### Quality Standards
+- [ ] Code Quality: [Code standards and review requirements]
+- [ ] Test Coverage: [Testing requirements and coverage]
+- [ ] Performance Metrics: [Performance test pass criteria]
+- [ ] Security Review: [Security review requirements]
 
-### 用户验收 (User Acceptance)
-- [ ] 用户体验: [UX验收标准]
-- [ ] 文档完整: [文档交付要求]
-- [ ] 培训材料: [如需要,培训材料要求]
+### User Acceptance
+- [ ] User Experience: [UX acceptance criteria]
+- [ ] Documentation: [Documentation delivery requirements]
+- [ ] Training Materials: [If needed, training material requirements]
 
-## 执行 Phase (Execution Phases)
+## Execution Phases
 
-### Phase 1: 准备阶段 (Preparation)
-**目标**: 环境准备和技术验证
-- [ ] 任务1: [具体任务描述]
-- [ ] 任务2: [具体任务描述]
-- **产出**: [阶段交付物]
-- **时间**: [预估时间]
+### Phase 1: Preparation
+**Goal**: Environment preparation and technical validation
+- [ ] Task 1: [Specific task description]
+- [ ] Task 2: [Specific task description]
+- **Deliverables**: [Phase deliverables]
+- **Time**: [Estimated time]
 
-### Phase 2: 核心开发 (Core Development)
-**目标**: 实现核心功能
-- [ ] 任务1: [具体任务描述]
-- [ ] 任务2: [具体任务描述]
-- **产出**: [阶段交付物]
-- **时间**: [预估时间]
+### Phase 2: Core Development
+**Goal**: Implement core functionality
+- [ ] Task 1: [Specific task description]
+- [ ] Task 2: [Specific task description]
+- **Deliverables**: [Phase deliverables]
+- **Time**: [Estimated time]
 
-### Phase 3: 集成测试 (Integration & Testing)
-**目标**: 集成和质量保证
-- [ ] 任务1: [具体任务描述]
-- [ ] 任务2: [具体任务描述]
-- **产出**: [阶段交付物]
-- **时间**: [预估时间]
+### Phase 3: Integration & Testing
+**Goal**: Integration and quality assurance
+- [ ] Task 1: [Specific task description]
+- [ ] Task 2: [Specific task description]
+- **Deliverables**: [Phase deliverables]
+- **Time**: [Estimated time]
 
-### Phase 4: 部署上线 (Deployment)
-**目标**: 发布和监控
-- [ ] 任务1: [具体任务描述]
-- [ ] 任务2: [具体任务描述]
-- **产出**: [阶段交付物]
-- **时间**: [预估时间]
+### Phase 4: Deployment
+**Goal**: Release and monitoring
+- [ ] Task 1: [Specific task description]
+- [ ] Task 2: [Specific task description]
+- **Deliverables**: [Phase deliverables]
+- **Time**: [Estimated time]
 
 ---
 
-**文档版本**: 1.0  
-**创建时间**: {timestamp}  
-**澄清轮数**: {clarification_rounds}  
-**质量评分**: {quality_score}/100
+**Document Version**: 1.0  
+**Created**: {timestamp}  
+**Clarification Rounds**: {clarification_rounds}  
+**Quality Score**: {quality_score}/100
 ```
 
 ## Success Criteria
@@ -164,5 +164,5 @@ Generate `./.claude/specs/{feature_name}/prd.md` with the following structure:
 - Don't proceed until quality threshold met
 - Keep questions focused and specific
 - Document all clarification rounds
-- Maintain Chinese section headers with English translations
+- Use clear, professional English throughout
 - Generate concrete, actionable specifications