# Change: Implement Admin Web Management System

## Why
The project needs a web-based administrative interface to manage users and conversation records from the WeChat mini-program. Currently, there is no centralized way for administrators to view, search, and manage system data.

## What Changes
- Implement a complete admin web application using Vue 3.x + Element Plus + Vite
- Create user management page with search and pagination
- Create conversation record management page with filtering capabilities
- Implement authentication system with login page
- Add responsive layout with sidebar navigation
- Implement dark/light theme switching
- Set up routing with vue-router
- Configure state management with Pinia
- Set up HTTP client with axios and interceptors

## Impact
- Affected specs: backend-admin
- Affected code: admin-web/ (new directory)
- Dependencies: Vue 3.x, Element Plus, Vite, vue-router, Pinia, axios
