Baixar PromptHub 0.4.4 per a Windows

修复 / Fixed
- 🍎 macOS 更新体验修复：macOS 绕过 Squirrel 自动更新（因无代码签名证书导致校验失败），改为直接下载 DMG 到 Downloads 文件夹，支持镜像加速与进度显示
- macOS Update UX Fix: Bypassed Squirrel auto-update on macOS (code signature validation fails without Apple Developer certificate), now downloads DMG directly to Downloads folder with mirror fallback and progress display
- 🖥️ 全屏退出修复 (closes #63, #65)：修复 Windows 无边框窗口进入全屏后无法退出、macOS 通过菜单/绿色按钮进入全屏时 Escape 键无效的问题；新增全局 Escape 退出全屏监听，补齐 CreateSkillModal 缺失的全屏退出快捷键
- Fullscreen Exit Fix (closes #63, #65): Fixed inability to exit fullscreen on Windows frameless windows and Escape key not working when entering fullscreen via macOS menu/green button; added global Escape-exits-fullscreen listener and missing keyboard handler in CreateSkillModal
- 🔐 安全设置国际化修复：修复 SecuritySettings 中 15 处硬编码中文 toast 提示，全部替换为 i18n 多语言 key
- Security Settings i18n Fix: Replaced 15 hardcoded Chinese toast messages in SecuritySettings with i18n keys across all 7 locales
- 🖼️ 图片上传死循环修复：修复 usePromptMediaManager 中因 initialImages/initialVideos 数组引用每次渲染变化导致的 Maximum update depth exceeded 无限循环
- Image Upload Infinite Loop Fix: Fixed Maximum update depth exceeded in usePromptMediaManager caused by array reference changes on every render for initialImages/initialVideos
优化 / Improvements
- 🍺 Homebrew 升级提示：macOS 更新提示中新增 brew upgrade --cask prompthub 指引，方便 Homebrew 用户快速升级
- Homebrew Upgrade Guidance: Added brew upgrade --cask prompthub instructions to macOS update prompt for Homebrew users
- 🌍 更新提示多语言：macOS 手动安装提示更新为 7 语言（zh/zh-TW/en/ja/de/es/fr），包含 DMG 安装和 Homebrew 升级两种方式
- Update Prompt i18n: Updated macOS manual install instructions across all 7 locales with DMG and Homebrew upgrade paths
- 🔧 CI/CD manifest 修正：新增发布前 SHA512/size 校正脚本，修复 electron-builder 生成的 manifest 与实际二进制不一致的问题
- CI/CD Manifest Fix: Added pre-release SHA512/size reconciliation script, fixing electron-builder manifest vs actual binary mismatch
- 🖼️ 绘图提示词 UI 优化：image 类型提示词的"参考媒体"区域从折叠属性面板中提取出来，作为一级 UI 元素与 Prompt 编辑器同层展示
- Image Prompt UI Enhancement: Extracted "Reference Media" section from collapsible Properties panel for image type prompts, displayed as a first-class UI element at the same level as the prompt editor
- 💡 上传限制提示：媒体上传区域新增格式与大小说明（图片 JPG/PNG/GIF/WebP，视频 MP4/WebM/MOV，单文件 ≤50MB）
- Upload Limit Hints: Added format and size hints to media upload areas (Images: JPG/PNG/GIF/WebP, Videos: MP4/WebM/MOV, ≤50MB per file)