chore: init v2 project scaffold

- Add electron-vite + Vue 3 + TypeScript build config
- Add .gitignore with legacy/ exclusion
- Add AGENTS.md with architecture & dev commands
- Update README.md

README.md

@@ -1,3 +1,29 @@
 # JRedisDesktop
 
-桌面端Redis客户端
+A modern Redis desktop manager built with Electron + Vue 3 + Vite.
+
+> Fork of [AnotherRedisDesktopManager](https://github.com/qishibo/AnotherRedisDesktopManager).  
+> The legacy Vue 2 codebase is archived in [`legacy/`](legacy/).
+
+## Dev
+
+```bash
+npm install
+npm run dev       # electron-vite dev with HMR
+npm run build     # production build
+```
+
+## Build packages
+
+```bash
+npm run build:linux
+npm run build:mac
+npm run build:win
+```
+
+## Stack
+
+- **Shell:** Electron 33
+- **Renderer:** Vue 3 + Element Plus + Vue Router
+- **Build:** electron-vite + Vite 6 + TypeScript
+- **Redis client:** ioredis 5