diff --git a/DEPLOY.md b/DEPLOY.md
index abebf6c..8082a59 100644
--- a/DEPLOY.md
+++ b/DEPLOY.md
@@ -27,8 +27,8 @@ default, e.g. via QEMU emulation).
 
 ```sh
 docker buildx build --platform linux/amd64 \
-  --build-arg VERSION=1.20 \
-  -t 192.168.2.212:3000/tigeren/metube:1.20 \
+  --build-arg VERSION=1.21 \
+  -t 192.168.2.212:3000/tigeren/metube:1.21 \
   --push .
 ```
 
diff --git a/app/main.py b/app/main.py
index 5900976..383d4b2 100644
--- a/app/main.py
+++ b/app/main.py
@@ -4,6 +4,7 @@
 import os
 import sys
 import asyncio
+import shutil
 from pathlib import Path
 from aiohttp import web
 from aiohttp.log import access_logger
@@ -505,6 +506,64 @@ async def library_delete(request):
     return web.Response(text=serializer.encode({'status': 'ok', 'deleted': deleted, 'errors': errors}))
 
 
+@routes.post(config.URL_PREFIX + 'library/move')
+async def library_move(request):
+    post = await request.json()
+    paths = post.get('paths')
+    folder = post.get('folder', '')
+    if not paths:
+        raise web.HTTPBadRequest()
+    root = _library_root()
+    if root is None:
+        raise web.HTTPBadRequest(text='LIBRARY_DIR is not configured')
+    target_dir = os.path.realpath(os.path.join(root, folder or ''))
+    if target_dir != root and not target_dir.startswith(root + os.sep):
+        raise web.HTTPBadRequest(text='Invalid library folder')
+
+    def _move():
+        os.makedirs(target_dir, exist_ok=True)
+        moved = 0
+        errors = []
+        for rel in paths:
+            _, src = _resolve_library_path(rel)
+            if src is None or not os.path.isfile(src):
+                errors.append(f'{rel}: invalid path')
+                continue
+            if os.path.realpath(os.path.dirname(src)) == target_dir:
+                continue
+            dst = os.path.join(target_dir, os.path.basename(src))
+            if os.path.exists(dst):
+                errors.append(f'{rel}: target already exists')
+                continue
+            try:
+                shutil.move(src, dst)
+            except OSError as e:
+                errors.append(f'{rel}: {e}')
+                continue
+            meta_src = library_meta_path(src)
+            if os.path.isfile(meta_src):
+                try:
+                    shutil.move(meta_src, library_meta_path(dst))
+                except OSError:
+                    pass
+            moved += 1
+            # Clean up emptied parent directories, never the library root itself
+            parent = os.path.dirname(src)
+            while parent != root and parent.startswith(root + os.sep):
+                try:
+                    os.rmdir(parent)
+                except OSError:
+                    break
+                parent = os.path.dirname(parent)
+        return moved, errors
+
+    moved, errors = await asyncio.get_running_loop().run_in_executor(None, _move)
+    if moved:
+        _invalidate_library_folders()
+    log.info(f"Library move request processed: moved={moved} errors={len(errors)}")
+    return web.Response(text=serializer.encode({'status': 'ok', 'moved': moved, 'errors': errors}))
+
+
 @routes.get(config.URL_PREFIX + 'library/thumbnail')
 async def library_thumbnail(request):
     """Thumbnail for a library file: ffmpeg frame extraction, cached on disk."""
diff --git a/ui/src/app/app.component.html b/ui/src/app/app.component.html
index 3136496..9505f70 100644
--- a/ui/src/app/app.component.html
+++ b/ui/src/app/app.component.html
@@ -94,9 +94,12 @@
       <app-library-browser
         [files]="libraryFiles"
         [folderPath]="libraryFolder"
+        [folders]="libraryFolderNames"
         [loading]="libraryLoading"
         (play)="playLibraryFile($event)"
         (del)="deleteLibraryFile($event)"
+        (batchDelete)="deleteLibraryFiles($event)"
+        (batchMove)="moveLibraryFiles($event)"
         (refresh)="loadLibraryFolders(); loadLibraryFiles()">
       </app-library-browser>
     </div>
@@ -169,7 +172,10 @@
                    [searchable]="true"
                    [clearable]="true"
                    appendTo="body">
-        </ng-select>
+        <ng-template ng-option-tmp let-item="item">
+          <span [title]="item">{{ item }}</span>
+        </ng-template>
+      </ng-select>
       </div>
       <div class="modal-footer">
         <button type="button" class="btn btn-secondary" (click)="closeOrganize()">取消</button>
diff --git a/ui/src/app/app.component.ts b/ui/src/app/app.component.ts
index eaaf18b..f29326a 100644
--- a/ui/src/app/app.component.ts
+++ b/ui/src/app/app.component.ts
@@ -224,8 +224,13 @@ export class AppComponent implements OnInit {
   }
 
   deleteLibraryFile(file: LibraryFile): void {
-    if (!confirm(`确定删除「${file.name}」吗?此操作不可恢复。`)) return;
-    this.downloads.libraryDelete([this.libraryFilePath(file)]).subscribe((res) => {
+    this.deleteLibraryFiles([this.libraryFilePath(file)]);
+  }
+
+  deleteLibraryFiles(paths: string[]): void {
+    if (!paths.length) return;
+    if (!confirm(`确定删除所选 ${paths.length} 个文件吗?此操作不可恢复。`)) return;
+    this.downloads.libraryDelete(paths).subscribe((res) => {
       if (res.status === 'error') {
         this.toastService.show(`删除失败: ${res.msg}`, { error: true });
         return;
@@ -233,7 +238,24 @@ export class AppComponent implements OnInit {
       if (res.errors?.length) {
         this.toastService.show(res.errors.join('; '), { error: true });
       } else {
-        this.toastService.show('已删除');
+        this.toastService.show(paths.length === 1 ? '已删除' : `已删除 ${paths.length} 个文件`);
+      }
+      this.loadLibraryFiles();
+      this.loadLibraryFolders();
+    });
+  }
+
+  moveLibraryFiles(evt: { paths: string[]; folder: string }): void {
+    if (!evt.paths.length) return;
+    this.downloads.libraryMove(evt.paths, evt.folder).subscribe((res) => {
+      if (res.status === 'error') {
+        this.toastService.show(`移动失败: ${res.msg}`, { error: true });
+        return;
+      }
+      if (res.errors?.length) {
+        this.toastService.show(`已移动 ${res.moved || 0} 个文件,${res.errors.length} 个失败: ${res.errors[0]}`, { error: true });
+      } else {
+        this.toastService.show(`已移动 ${res.moved || 0} 个文件到「${evt.folder || '根目录'}」`);
       }
       this.loadLibraryFiles();
       this.loadLibraryFolders();
diff --git a/ui/src/app/command-bar.component.html b/ui/src/app/command-bar.component.html
index 9b6a352..223fb89 100644
--- a/ui/src/app/command-bar.component.html
+++ b/ui/src/app/command-bar.component.html
@@ -62,7 +62,11 @@
                [disabled]="disabled"
                [(ngModel)]="folder"
                (ngModelChange)="folderChange.emit($event)"
-               ngbTooltip="选择保存目录,可直接输入创建新目录">
+               appendTo="body"
+               [ngbTooltip]="folder || '选择保存目录,可直接输入创建新目录'">
+      <ng-template ng-option-tmp let-item="item">
+        <span [title]="item">{{ item }}</span>
+      </ng-template>
     </ng-select>
 
     <button class="advanced-link" (click)="openAdvanced.emit()">
diff --git a/ui/src/app/download-card.component.html b/ui/src/app/download-card.component.html
index e8af427..a81efce 100644
--- a/ui/src/app/download-card.component.html
+++ b/ui/src/app/download-card.component.html
@@ -1,6 +1,6 @@
 <div class="card" [class.selected]="selected">
   <input type="checkbox" class="card-check" [checked]="selected" (change)="selectChange.emit($event.target.checked)" [attr.aria-label]="'选择 ' + row.value.title">
-  <div class="thumb">
+  <div class="thumb" [class.clickable]="!!downloadUrl" (click)="downloadUrl && play.emit()">
     <img [src]="thumbUrl()" [alt]="row.value.title" loading="lazy">
     <span class="dur num" *ngIf="row.value.duration">{{ row.value.duration | duration }}</span>
     <span *ngIf="row.value.file_exists === false" class="file-warn" title="文件不存在">
@@ -8,7 +8,7 @@
     </span>
   </div>
   <div class="card-body">
-    <div class="card-title" [title]="row.value.title">{{ row.value.title }}</div>
+    <div class="card-title" [title]="row.value.title" [class.clickable]="!!downloadUrl" (click)="downloadUrl && play.emit()">{{ row.value.title }}</div>
     <div class="card-meta">
       <span class="badge folder">{{ folderLabel() }}</span>
       <span class="badge fmt">{{ qualityLabel(row.value.quality) }} · {{ formatLabel(row.value.format) }}</span>
@@ -45,7 +45,10 @@
                  [ngModel]="row.value.folder"
                  (change)="folderChange.emit({ key: row.key, folder: $event || '' })"
                  appendTo="body"
-                 ngbTooltip="移动文件到其他目录">
+                 [ngbTooltip]="row.value.folder || '移动文件到其他目录'">
+        <ng-template ng-option-tmp let-item="item">
+          <span [title]="item">{{ item }}</span>
+        </ng-template>
       </ng-select>
     </div>
   </div>
diff --git a/ui/src/app/download-card.component.sass b/ui/src/app/download-card.component.sass
index 7bc6059..9bcbd27 100644
--- a/ui/src/app/download-card.component.sass
+++ b/ui/src/app/download-card.component.sass
@@ -72,6 +72,18 @@
   overflow: hidden
   min-height: 38px
 
+.clickable
+  cursor: pointer
+
+.card-title.clickable:hover
+  color: var(--accent-strong)
+
+.thumb.clickable img
+  transition: opacity 0.12s ease
+
+.thumb.clickable:hover img
+  opacity: 0.85
+
 .card-meta
   display: flex
   align-items: center
diff --git a/ui/src/app/download-row.component.html b/ui/src/app/download-row.component.html
index 7a67485..e29c5b2 100644
--- a/ui/src/app/download-row.component.html
+++ b/ui/src/app/download-row.component.html
@@ -1,6 +1,6 @@
 <div class="q-row" [class.selected]="selected">
   <input type="checkbox" class="q-check" [checked]="selected" (change)="selectChange.emit($event.target.checked)" [attr.aria-label]="'选择 ' + row.value.title">
-  <div class="thumb">
+  <div class="thumb" [class.clickable]="canPlay()" (click)="canPlay() && play.emit()">
     <img *ngIf="status === 'completed' || row.value.thumbnail" [src]="thumbUrl()" [alt]="row.value.title" loading="lazy">
     <span class="thumb-ph" *ngIf="status !== 'completed' && !row.value.thumbnail">
       <svg width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.8" stroke-linecap="round" stroke-linejoin="round"><rect x="2" y="4" width="20" height="16" rx="2"/><polyline points="10 9 15 12 10 15"/></svg>
@@ -8,7 +8,7 @@
     <span class="dur num" *ngIf="row.value.duration">{{ row.value.duration | duration }}</span>
   </div>
   <div class="q-main">
-    <div class="q-title" [title]="row.value.title">{{ row.value.title }}</div>
+      <div class="q-title" [title]="row.value.title" [class.clickable]="canPlay()" (click)="canPlay() && play.emit()">{{ row.value.title }}</div>
     <div class="q-meta">
       <span class="badge folder">{{ folderLabel() }}</span>
       <span class="badge fmt">{{ qualityLabel(row.value.quality) }} · {{ formatLabel(row.value.format) }}</span>
@@ -29,8 +29,11 @@
                  [closeOnSelect]="true"
                  [ngModel]="row.value.folder"
                  (change)="folderChange.emit({ key: row.key, folder: $event || '' })"
-                 appendTo="body"
-                 ngbTooltip="更改下载目录">
+                  appendTo="body"
+                  [ngbTooltip]="row.value.folder || '更改下载目录'">
+        <ng-template ng-option-tmp let-item="item">
+          <span [title]="item">{{ item }}</span>
+        </ng-template>
       </ng-select>
     </div>
   </div>
diff --git a/ui/src/app/download-row.component.sass b/ui/src/app/download-row.component.sass
index 728e1c6..9dd6bbb 100644
--- a/ui/src/app/download-row.component.sass
+++ b/ui/src/app/download-row.component.sass
@@ -67,6 +67,18 @@
   -webkit-box-orient: vertical
   overflow: hidden
 
+.clickable
+  cursor: pointer
+
+.q-title.clickable:hover
+  color: var(--accent-strong)
+
+.thumb.clickable img
+  transition: opacity 0.12s ease
+
+.thumb.clickable:hover img
+  opacity: 0.85
+
 .q-meta
   display: flex
   gap: 8px
diff --git a/ui/src/app/download-row.component.ts b/ui/src/app/download-row.component.ts
index 6b2e116..5e52dc3 100644
--- a/ui/src/app/download-row.component.ts
+++ b/ui/src/app/download-row.component.ts
@@ -50,6 +50,10 @@ export class DownloadRowComponent {
     return this.row.value.folder || '默认';
   }
 
+  canPlay(): boolean {
+    return this.status === 'completed' && !!this.downloadUrl;
+  }
+
   fullTime(): string {
     return new Date((this.row.value.timestamp || 0) / 1e6).toLocaleString();
   }
diff --git a/ui/src/app/downloads.service.ts b/ui/src/app/downloads.service.ts
index d763da4..0e81c8d 100644
--- a/ui/src/app/downloads.service.ts
+++ b/ui/src/app/downloads.service.ts
@@ -229,6 +229,12 @@ export class DownloadsService {
     );
   }
 
+  public libraryMove(paths: string[], folder: string): Observable<Status & { moved?: number; errors?: string[] }> {
+    return this.http.post<Status & { moved?: number; errors?: string[] }>('library/move', { paths, folder }).pipe(
+      catchError(this.handleHTTPError)
+    );
+  }
+
   public libraryThumbUrl(path: string): string {
     return 'library/thumbnail?path=' + encodeURIComponent(path);
   }
diff --git a/ui/src/app/library-browser.component.html b/ui/src/app/library-browser.component.html
index 45e9eca..a6e248f 100644
--- a/ui/src/app/library-browser.component.html
+++ b/ui/src/app/library-browser.component.html
@@ -26,6 +26,7 @@
         <fa-icon [icon]="faThLarge"></fa-icon>
       </button>
     </div>
+    <button class="ghost-btn" (click)="toggleSelectAll()">{{ allSelected() ? '取消全选' : '全选' }}</button>
     <button class="ghost-btn" (click)="refresh.emit()" title="刷新">
       <fa-icon [icon]="faRedoAlt"></fa-icon>&nbsp;刷新
     </button>
@@ -40,12 +41,13 @@
 
   <div class="list-frame" *ngIf="files.length > 0">
     <div class="lib-rows" *ngIf="view === 'list'">
-      <div class="lib-row" *ngFor="let file of filteredFiles; trackBy: trackByName">
-        <div class="thumb">
+      <div class="lib-row" *ngFor="let file of filteredFiles; trackBy: trackByName" [class.selected]="isSelected(filePath(file))">
+        <input type="checkbox" class="lib-check" [checked]="isSelected(filePath(file))" (change)="toggleSelect(filePath(file), $event.target.checked)" [attr.aria-label]="'选择 ' + file.name">
+        <div class="thumb clickable" (click)="play.emit(file)">
           <img [src]="thumbUrl(file)" [alt]="file.name" loading="lazy">
         </div>
         <div class="lib-main">
-          <div class="lib-title" [title]="file.name">{{ file.name }}</div>
+          <div class="lib-title clickable" [title]="file.name" (click)="play.emit(file)">{{ file.name }}</div>
           <div class="lib-meta">
             <span class="num">{{ file.size | fileSize }}</span>
             <span>{{ fileTime(file) }}</span>
@@ -66,12 +68,13 @@
     </div>
 
     <div class="grid" *ngIf="view === 'grid'">
-      <div class="card" *ngFor="let file of filteredFiles; trackBy: trackByName">
-        <div class="thumb" (click)="play.emit(file)">
+      <div class="card" *ngFor="let file of filteredFiles; trackBy: trackByName" [class.selected]="isSelected(filePath(file))">
+        <input type="checkbox" class="card-check" [checked]="isSelected(filePath(file))" (change)="toggleSelect(filePath(file), $event.target.checked)" [attr.aria-label]="'选择 ' + file.name">
+        <div class="thumb clickable" (click)="play.emit(file)">
           <img [src]="thumbUrl(file)" [alt]="file.name" loading="lazy">
         </div>
         <div class="card-body">
-          <div class="card-title" [title]="file.name">{{ file.name }}</div>
+          <div class="card-title clickable" [title]="file.name" (click)="play.emit(file)">{{ file.name }}</div>
           <div class="card-meta">
             <span class="num">{{ file.size | fileSize }}</span>
             <span>{{ fileTime(file) }}</span>
@@ -91,4 +94,26 @@
       </div>
     </div>
   </div>
+
+  <div class="batchbar" [class.show]="selected.size > 0">
+    <span class="batch-count">已选 {{ selected.size }} 项</span>
+    <div class="move-wrap">
+      <button type="button" class="batch-btn" (click)="moveMenuOpen = !moveMenuOpen">
+        <svg width="13" height="13" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.8" stroke-linecap="round" stroke-linejoin="round"><path d="M22 19a2 2 0 0 1-2 2H4a2 2 0 0 1-2-2V5a2 2 0 0 1 2-2h5l2 3h9a2 2 0 0 1 2 2z"/></svg>
+        移动到…
+      </button>
+      <div class="move-menu" *ngIf="moveMenuOpen">
+        <button *ngFor="let opt of folderOptions()" type="button" class="move-item" (click)="moveTo(opt.path)">{{ opt.label }}</button>
+        <div class="move-new">
+          <input type="text" placeholder="新建文件夹…" [(ngModel)]="newFolder" (keydown.enter)="confirmNewFolder()">
+          <button type="button" class="batch-btn small" (click)="confirmNewFolder()">创建</button>
+        </div>
+      </div>
+    </div>
+    <button type="button" class="batch-btn danger" (click)="delSelected()">
+      <svg width="13" height="13" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.8" stroke-linecap="round" stroke-linejoin="round"><polyline points="3 6 5 6 21 6"/><path d="M19 6v14a2 2 0 0 1-2 2H7a2 2 0 0 1-2-2V6m3 0V4a2 2 0 0 1 2-2h4a2 2 0 0 1 2 2v2"/></svg>
+      删除
+    </button>
+    <button type="button" class="batch-btn" (click)="clearSelection()">取消选择</button>
+  </div>
 </section>
diff --git a/ui/src/app/library-browser.component.sass b/ui/src/app/library-browser.component.sass
index 1053b3b..5b0336c 100644
--- a/ui/src/app/library-browser.component.sass
+++ b/ui/src/app/library-browser.component.sass
@@ -180,15 +180,19 @@
 
 .lib-row
   display: grid
-  grid-template-columns: 88px 1fr auto
+  grid-template-columns: 30px 88px 1fr auto
   gap: 12px
   align-items: center
-  padding: 10px 14px
+  padding: 10px 14px 10px 8px
   border-bottom: 1px solid var(--border)
+  transition: background 0.1s ease
 
   &:last-child
     border-bottom: none
 
+  &.selected
+    background: var(--accent-tint)
+
   .thumb
     width: 88px
     aspect-ratio: 16 / 9
@@ -202,6 +206,13 @@
       height: 100%
       object-fit: cover
 
+.lib-check
+  width: 17px
+  height: 17px
+  accent-color: var(--accent)
+  cursor: pointer
+  margin-left: 6px
+
 .lib-main
   min-width: 0
 
@@ -213,6 +224,18 @@
   overflow: hidden
   text-overflow: ellipsis
 
+.clickable
+  cursor: pointer
+
+.lib-title.clickable:hover, .card-title.clickable:hover
+  color: var(--accent-strong)
+
+.thumb.clickable img
+  transition: opacity 0.12s ease
+
+.thumb.clickable:hover img
+  opacity: 0.85
+
 .lib-meta
   display: flex
   gap: 10px
@@ -244,12 +267,17 @@
   border: 1px solid var(--border)
   border-radius: var(--radius)
   overflow: hidden
+  position: relative
   transition: border-color 0.12s ease, box-shadow 0.12s ease
 
   &:hover
     border-color: oklch(80% 0.012 240)
     box-shadow: 0 4px 14px oklch(30% 0.02 240 / 0.08)
 
+  &.selected
+    border-color: var(--accent)
+    box-shadow: 0 0 0 1px var(--accent)
+
   .thumb
     aspect-ratio: 16 / 9
     overflow: hidden
@@ -262,6 +290,21 @@
       height: 100%
       object-fit: cover
 
+.card-check
+  position: absolute
+  top: 8px
+  left: 8px
+  z-index: 2
+  width: 17px
+  height: 17px
+  accent-color: var(--accent)
+  cursor: pointer
+  opacity: 0
+  transition: opacity 0.12s ease
+
+.card:hover .card-check, .card-check:checked
+  opacity: 1
+
 .card-body
   padding: 10px 12px 12px
 
@@ -314,6 +357,119 @@
     background: var(--bg)
     color: var(--fg)
 
+// Batch bar
+.batchbar
+  position: fixed
+  left: 50%
+  bottom: 18px
+  transform: translate(-50%, 76px)
+  display: flex
+  align-items: center
+  gap: 6px
+  background: var(--fg)
+  color: oklch(96% 0.008 240)
+  border-radius: 10px
+  padding: 8px 8px 8px 16px
+  box-shadow: 0 10px 30px oklch(20% 0.02 240 / 0.3)
+  transition: transform 0.2s cubic-bezier(0.2, 0.9, 0.3, 1.2)
+  z-index: 30
+  pointer-events: none
+
+  &.show
+    transform: translate(-50%, 0)
+    pointer-events: auto
+
+.batch-count
+  font-size: 13px
+  font-weight: 550
+  margin-right: 8px
+  white-space: nowrap
+
+.batch-btn
+  display: inline-flex
+  align-items: center
+  gap: 6px
+  border: none
+  background: oklch(100% 0 0 / 0.1)
+  color: oklch(96% 0.008 240)
+  border-radius: 6px
+  padding: 7px 12px
+  font-size: 12.5px
+  font-weight: 500
+  transition: background 0.12s ease
+  white-space: nowrap
+
+  &:hover
+    background: oklch(100% 0 0 / 0.2)
+
+  &.danger:hover
+    background: var(--danger)
+
+  &.small
+    padding: 6px 10px
+    font-size: 12px
+
+.move-wrap
+  position: relative
+
+.move-menu
+  position: absolute
+  bottom: calc(100% + 8px)
+  left: 0
+  z-index: 35
+  min-width: 190px
+  max-height: 320px
+  overflow-y: auto
+  background: var(--surface)
+  border: 1px solid var(--border)
+  border-radius: 8px
+  box-shadow: 0 8px 24px oklch(30% 0.02 240 / 0.18)
+  padding: 6px
+  display: flex
+  flex-direction: column
+  gap: 2px
+  color: var(--fg)
+
+  .move-item
+    width: 100%
+    border: none
+    background: none
+    border-radius: 6px
+    padding: 7px 10px
+    font-size: 12.5px
+    color: var(--fg)
+    text-align: left
+    white-space: nowrap
+    overflow: hidden
+    text-overflow: ellipsis
+
+    &:hover:not(:disabled)
+      background: var(--bg)
+
+    &:disabled
+      color: var(--muted)
+
+  .move-new
+    display: flex
+    gap: 6px
+    padding: 6px 2px 2px
+    border-top: 1px solid var(--border)
+    margin-top: 4px
+
+    input
+      flex: 1
+      min-width: 0
+      border: 1px solid var(--border)
+      background: var(--bg)
+      border-radius: 6px
+      padding: 5px 8px
+      font-size: 12.5px
+      color: var(--fg)
+      outline: none
+
+      &:focus
+        border-color: var(--accent)
+
 @media (max-width: 900px)
   .filter-wrap
     width: 100%
diff --git a/ui/src/app/library-browser.component.ts b/ui/src/app/library-browser.component.ts
index 631cbd5..5f7f350 100644
--- a/ui/src/app/library-browser.component.ts
+++ b/ui/src/app/library-browser.component.ts
@@ -1,4 +1,4 @@
-import { Component, EventEmitter, Input, Output } from '@angular/core';
+import { Component, EventEmitter, Input, OnChanges, Output, SimpleChanges } from '@angular/core';
 import { faExternalLinkAlt, faList, faPlay, faRedoAlt, faThLarge, faTrashAlt } from '@fortawesome/free-solid-svg-icons';
 import { DownloadsService, LibraryFile } from './downloads.service';
 import { relativeTime } from './labels';
@@ -9,19 +9,25 @@ import { relativeTime } from './labels';
   templateUrl: './library-browser.component.html',
   styleUrls: ['./library-browser.component.sass']
 })
-export class LibraryBrowserComponent {
+export class LibraryBrowserComponent implements OnChanges {
   @Input() files: LibraryFile[] = [];
   @Input() folderPath = '';    // library-relative path of the current folder
+  @Input() folders: string[] = [];
   @Input() loading = false;
 
   @Output() play = new EventEmitter<LibraryFile>();
   @Output() del = new EventEmitter<LibraryFile>();
   @Output() refresh = new EventEmitter<void>();
+  @Output() batchDelete = new EventEmitter<string[]>();
+  @Output() batchMove = new EventEmitter<{ paths: string[]; folder: string }>();
 
   filter = '';
   sort: 'name' | 'date' | 'size' = 'name';
   sortAscending = true;
   view: 'list' | 'grid' = 'grid';
+  selected = new Set<string>();
+  moveMenuOpen = false;
+  newFolder = '';
 
   faList = faList;
   faThLarge = faThLarge;
@@ -32,6 +38,12 @@ export class LibraryBrowserComponent {
 
   constructor(public downloads: DownloadsService) {}
 
+  ngOnChanges(changes: SimpleChanges): void {
+    if (changes['folderPath']) {
+      this.clearSelection();
+    }
+  }
+
   get filteredFiles(): LibraryFile[] {
     let files = this.files;
     const q = this.filter.trim().toLowerCase();
@@ -63,4 +75,59 @@ export class LibraryBrowserComponent {
   trackByName(_: number, file: LibraryFile): string {
     return file.name;
   }
+
+  isSelected(path: string): boolean {
+    return this.selected.has(path);
+  }
+
+  toggleSelect(path: string, checked: boolean): void {
+    if (checked) {
+      this.selected.add(path);
+    } else {
+      this.selected.delete(path);
+    }
+    this.moveMenuOpen = false;
+  }
+
+  allSelected(): boolean {
+    return this.filteredFiles.length > 0 && this.filteredFiles.every(f => this.selected.has(this.filePath(f)));
+  }
+
+  toggleSelectAll(): void {
+    if (this.allSelected()) {
+      this.filteredFiles.forEach(f => this.selected.delete(this.filePath(f)));
+    } else {
+      this.filteredFiles.forEach(f => this.selected.add(this.filePath(f)));
+    }
+    this.moveMenuOpen = false;
+  }
+
+  clearSelection(): void {
+    this.selected.clear();
+    this.moveMenuOpen = false;
+  }
+
+  folderOptions(): { label: string; path: string }[] {
+    const opts = [{ label: '根目录', path: '' }];
+    [...this.folders].sort((a, b) => a.localeCompare(b, 'zh')).forEach(f => {
+      if (f) opts.push({ label: f, path: f });
+    });
+    return opts.filter(o => o.path !== this.folderPath);
+  }
+
+  moveTo(folder: string): void {
+    this.batchMove.emit({ paths: Array.from(this.selected), folder });
+    this.clearSelection();
+  }
+
+  confirmNewFolder(): void {
+    const folder = this.newFolder.trim();
+    if (folder) this.moveTo(folder);
+    this.newFolder = '';
+  }
+
+  delSelected(): void {
+    this.batchDelete.emit(Array.from(this.selected));
+    this.clearSelection();
+  }
 }
diff --git a/ui/src/app/sidebar.component.html b/ui/src/app/sidebar.component.html
index 31615ab..e88f22b 100644
--- a/ui/src/app/sidebar.component.html
+++ b/ui/src/app/sidebar.component.html
@@ -48,6 +48,11 @@
 
   <div class="nav-section" *ngIf="mode === 'library'">
     <div class="nav-label">媒体库文件夹</div>
+    <div class="folder-filter">
+      <svg width="13" height="13" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="1.8" stroke-linecap="round" stroke-linejoin="round"><circle cx="11" cy="11" r="8"/><line x1="21" y1="21" x2="16.65" y2="16.65"/></svg>
+      <input type="search" placeholder="筛选文件夹…" aria-label="筛选文件夹"
+             [(ngModel)]="folderFilter">
+    </div>
     <button class="nav-item" [class.active]="selectedLibraryFolder === ''" (click)="selectLibraryFolder('')">
       <fa-icon [icon]="faHome" class="nav-icon"></fa-icon>
       <span>根目录</span>
@@ -58,6 +63,7 @@
       <span>{{ folder.name }}</span>
       <span class="nav-count num">{{ folder.count }}</span>
     </button>
+    <div class="nav-empty" *ngIf="folderFilter && libraryFoldersNonRoot.length === 0">无匹配文件夹</div>
   </div>
 
   <div class="sidebar-foot">
diff --git a/ui/src/app/sidebar.component.sass b/ui/src/app/sidebar.component.sass
index 1343001..0e4669d 100644
--- a/ui/src/app/sidebar.component.sass
+++ b/ui/src/app/sidebar.component.sass
@@ -48,6 +48,41 @@
   color: var(--muted)
   padding: 0 8px 6px
 
+.folder-filter
+  display: flex
+  align-items: center
+  gap: 7px
+  border: 1px solid var(--border)
+  background: var(--surface)
+  border-radius: 6px
+  padding: 0 8px
+  height: 30px
+  margin: 0 8px 6px
+  transition: border-color 0.12s ease
+
+  &:focus-within
+    border-color: var(--accent)
+
+  svg
+    color: var(--muted)
+    flex: none
+
+  input
+    border: none
+    background: none
+    outline: none
+    font-size: 12.5px
+    color: var(--fg)
+    width: 100%
+
+    &::placeholder
+      color: var(--muted)
+
+.nav-empty
+  font-size: 12px
+  color: var(--muted)
+  padding: 4px 8px
+
 .nav-item
   display: flex
   align-items: center
diff --git a/ui/src/app/sidebar.component.ts b/ui/src/app/sidebar.component.ts
index b65291f..8ab39de 100644
--- a/ui/src/app/sidebar.component.ts
+++ b/ui/src/app/sidebar.component.ts
@@ -51,12 +51,15 @@ export class SidebarComponent {
     return name || '未分类';
   }
 
+  folderFilter = '';
+
   get libraryRootCount(): number {
     return this.libraryFolders.find(f => f.name === '')?.count || 0;
   }
 
   get libraryFoldersNonRoot(): FolderNav[] {
-    return this.libraryFolders.filter(f => f.name !== '');
+    const q = this.folderFilter.trim().toLowerCase();
+    return this.libraryFolders.filter(f => f.name !== '' && (!q || f.name.toLowerCase().includes(q)));
   }
 
   selectStatus(status: string): void {
diff --git a/ui/src/styles.sass b/ui/src/styles.sass
index d1f8cc6..5228394 100644
--- a/ui/src/styles.sass
+++ b/ui/src/styles.sass
@@ -31,3 +31,4 @@ input, select
 // cascade — the `body >` selector wins on specificity instead.
 body > .ng-dropdown-panel
   z-index: 1060
+  min-width: 240px