feat(编辑能力): 优化水印选择，完善注解编辑

assets/webui/ofdgo.css

@@ -798,7 +798,8 @@ button:not(:disabled):hover {
 	gap: 8px;
 }
 
-.form-actions > button:only-child {
+.form-actions > button:only-child,
+.form-actions > button:has(+ button[hidden]) {
 	grid-column: -2;
 }
 
@@ -1297,6 +1298,8 @@ button.outline-link:hover {
 .navigation-tabs[hidden],
 .page-selection-tools[hidden],
 .form-row[hidden],
+.form-actions > [hidden],
+.annotation-detail[hidden],
 .tool-group[hidden],
 .page-list[hidden],
 .page-frame[hidden],
@@ -1513,6 +1516,10 @@ button.outline-link:hover {
 	cursor: default;
 }
 
+.edit-object.edit-background:not(.selected):not(.erasing) {
+	outline: none;
+}
+
 .edit-object.edit-contour,
 .edit-object.edit-contour.selected,
 .edit-object.edit-contour.erasing {