refactor: Extract folder assignment logic into a new SelectionFolderMenu component, adding new icons and updating related styles.

frontend/src/ui/icons.tsx

@@ -20,6 +20,7 @@ import {
   IconTextScan2,
   IconFolderPlus,
   IconFolder,
+  IconFolderUp,
   IconFolders,
   IconFoldersOff,
   IconRefresh,
@@ -567,6 +568,40 @@ export const ChevronDownIcon: TablerIconComponent = ({ className, size = '1em',
   />
 );
 
+export const FolderUpIcon: TablerIconComponent = ({ className, size = '1em', stroke = 1.6, ...rest }) => (
+  <IconFolderUp
+    className={composeClassName('icon', className)}
+    size={size}
+    stroke={stroke}
+    {...rest}
+  />
+);
+
+export const FolderMoveIcon: TablerIconComponent = ({ className, size = '1em', stroke = 1.6, ...rest }) => (
+  <svg
+    xmlns="http://www.w3.org/2000/svg"
+    width={size}
+    height={size}
+    viewBox="0 0 24 24"
+    fill="none"
+    stroke="currentColor"
+    strokeWidth={stroke}
+    strokeLinecap="round"
+    strokeLinejoin="round"
+    className={composeClassName('icon', className)}
+    {...rest}
+  >
+    <g transform="translate(2, 0)">
+      <path d="M5 4h4l3 3h7a2 2 0 0 1 2 2v8a2 2 0 0 1 -2 2h-14a2 2 0 0 1 -2 -2v-2m0 -6v-3a2 2 0 0 1 2 -2" />
+    </g>
+    <g transform="translate(-4, 0)">
+      <path d="M5 12l11 0"></path>
+      <path d="M13 16l4 -4"></path>
+      <path d="M13 8l4 4"></path>
+    </g>
+  </svg>
+);
+
 export default {
   ChevronIcon,
   TrashIcon,
@@ -589,6 +624,8 @@ export default {
   MinusVerticalIcon,
   LogoutIcon,
   ChevronDownIcon,
+  FolderUpIcon,
+  FolderMoveIcon,
 };
 
 export const TextScanIcon: TablerIconComponent = ({ className, size = '1em', stroke = 1.6, ...rest }) => (