feat(前端界面): 新增视图旋转，统一界面文案与按钮对齐

assets/webui/ofdgo.css

@@ -355,7 +355,7 @@ body[data-hide-meta] .meta-panel {
 	align-items: center;
 	justify-content: center;
 	height: 26px;
-	padding: 0 8px;
+	padding: 0 6px;
 	border-radius: 0;
 	font-size: 12px;
 	white-space: nowrap;
@@ -591,9 +591,10 @@ button.outline-link:hover {
 }
 
 .thumb-paper {
+	position: relative;
+	box-sizing: content-box;
 	display: grid;
 	place-items: center;
-	width: 100%;
 	aspect-ratio: var(--thumb-ratio, 0.707 / 1);
 	overflow: hidden;
 	border: 1px solid var(--line);
@@ -615,8 +616,12 @@ button.outline-link:hover {
 
 .thumb-svg {
 	display: block;
-	width: 100%;
-	height: 100%;
+	position: absolute;
+	left: 50%;
+	top: 50%;
+	width: var(--thumb-width, 100%);
+	height: var(--thumb-height, 100%);
+	transform: translate(-50%, -50%) rotate(var(--thumb-rotation, 0deg));
 }
 
 .thumb-label,