feat(ui): 新增支持缩放、拖拽及键盘控制的图片预览组件并优化样式，更新安装程序支持 VC++ 运行库自动安装，多账号支持列表选择。

src/components/ImagePreview.scss

@@ -0,0 +1,46 @@
+.image-preview-overlay {
+  position: fixed;
+  inset: 0;
+  background: rgba(0, 0, 0, 0.9);
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  z-index: 9999;
+  user-select: none;
+}
+
+.preview-image {
+  max-width: 90vw;
+  max-height: 90vh;
+  object-fit: contain;
+  transition: transform 0.15s ease-out;
+  
+  &.dragging {
+    transition: none;
+  }
+}
+
+.image-preview-close {
+  position: absolute;
+  bottom: 40px;
+  left: 50%;
+  transform: translateX(-50%);
+  width: 48px;
+  height: 48px;
+  border-radius: 50%;
+  border: 2px solid rgba(255, 255, 255, 0.3);
+  background: rgba(0, 0, 0, 0.7);
+  color: #fff;
+  cursor: pointer;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  transition: all 0.2s;
+  backdrop-filter: blur(10px);
+
+  &:hover {
+    background: rgba(255, 255, 255, 0.2);
+    border-color: rgba(255, 255, 255, 0.5);
+    transform: translateX(-50%) scale(1.1);
+  }
+}