fix: 优化 Gemini 登录流程和验证码提取逻辑

fix: 启动时同步代理环境变量大小写，修复 NO_PROXY 不生效的问题

fix: 修复 Docker 代理环境下浏览器自动化 CDP 连接断开的问题

fix: 修复 Dreamina 外部模型参数不兼容问题，支持 aspect_ratio/resolution 参数

fix: 修复 Dreamina 自动注册验证码输入不完整的问题

feat: 项目重命名为 NexusAPI，新增 Dreamina 支持

chore: UI cleanup and fix gptmail_domain settings

fix: add per-operation timeouts to prevent long waits on failed accounts

fix: detect upstream 429 in streaming response and trigger quota cooldown

fix: restore differentiated error handling to prevent false 429 cooldowns

Merge main into beta: mail fixes and proxy handling

Merge pull request #97 from Kritoooo/fix/mail-latest-first-polling-min-retry

fix: 修复 Freemail 无时区时间导致验证码误判过期

chore: aggregate freemail skip logs to reduce log noise

fix: keep verification cutoff at task start across resend