fix: [KAN-40] add client path param

[lianjin]

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name: Pull Request | 合并请求
about: 修复或改进 | Submit a fix, or improvement
labels: ["fix"]

变更内容 | Changes

add a :client path parameter to each api, to differentiate requests from customer/merchant

相关 Issue | Related Issue

[KAN-40 Use Service API distinguish between merchant-frontend and customer-frontend] (https://cerami-craft.atlassian.net/browse/KAN-40)

变更类型 | Type of Change

• 新功能 Feature
• 修复 Bug Fix
• 文档 Documentation
• 样式优化 Style
• 重构 Refactor
• 性能优化 Performance
• 测试 Test
• 构建/CI Build/CI
• 其他 Other

检查清单 | Checklist

• 代码已通过本地测试（含主流浏览器/终端）| Code tested locally (including major browsers/terminals)
• 相关文档已更新（如有）| Documentation updated if needed
• 代码风格符合项目规范 | Code style follows project conventions
• 变更不会影响现有功能 | Changes do not break existing features
• 已自查无敏感信息泄露 | No sensitive info is leaked

变更影响 | Impact

frontend need to adjust new api

测试说明 | Test Instructions

test login/logout (merchant/customer)
test registration/activatation (customer)

其他说明 | Additional Notes

[Copilot]

Pull Request Overview

This PR adds a :client path parameter to user management API endpoints to differentiate between customer and merchant client requests, implementing the requirement from KAN-40.

• Introduces client validation middleware to ensure only "customer" or "merchant" values are accepted
• Updates all authentication and user management endpoints to include the client path parameter
• Updates Swagger documentation to reflect the new API structure

Reviewed Changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
server/http/router/router.go	Adds client path parameter to route groups and implements validation middleware
server/http/api/register.go	Updates registration and activation endpoint documentation with client parameter
server/http/api/login.go	Updates login and logout endpoint documentation with client parameter
server/docs/swagger.yaml	Updates OpenAPI specification with client path parameters
server/docs/swagger.json	Updates generated JSON documentation with client path parameters
server/docs/docs.go	Updates generated Go documentation with client path parameters

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[Copilot]

Pull Request Overview

Copilot reviewed 6 out of 6 changed files in this pull request and generated 1 comment.

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[Copilot]

Pull Request Overview

Copilot reviewed 7 out of 7 changed files in this pull request and generated 1 comment.

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