refactor(auth): 优化设备登录逻辑，移除冗余代码并添加设备缓存

feat(database): 添加用户算法和盐字段的迁移脚本

fix(subscribe): 修复服务器用户列表缓存问题，临时禁用缓存

style(model): 清理用户模型注释，简化代码结构

chore: 删除无用脚本和测试文件

docs: 添加用户绑定流程文档

perf(login): 优化设备登录性能，添加设备缓存键

fix(unbind): 修复设备解绑时的缓存清理逻辑

refactor(verify): 简化邮箱验证逻辑，移除冗余代码

build(docker): 更新Dockerfile配置，使用scratch基础镜像

Dockerfile

@@ -24,11 +24,11 @@ RUN BUILD_TIME=$(date -u +"%Y-%m-%d %H:%M:%S") && \
     go build -ldflags="-s -w -X 'github.com/perfect-panel/server/pkg/constant.Version=${VERSION}' -X 'github.com/perfect-panel/server/pkg/constant.BuildTime=${BUILD_TIME}'" -o /app/ppanel ppanel.go
 
 # Final minimal image
-FROM alpine:latest
+FROM scratch
 
 # Copy CA certificates and timezone data
 COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
-COPY --from=builder /usr/share/zoneinfo /usr/share/zoneinfo
+COPY --from=builder /usr/share/zoneinfo/Asia/Shanghai /usr/share/zoneinfo/Asia/Shanghai
 
 ENV TZ=Asia/Shanghai
 
@@ -36,6 +36,7 @@ ENV TZ=Asia/Shanghai
 WORKDIR /app
 
 COPY --from=builder /app/ppanel /app/ppanel
+COPY --from=builder /build/etc /app/etc
 
 # Expose the port (optional)
 EXPOSE 8080