feat: 批量删除后端化

新增 BatchDelete 端点，删除全部后只重扫一次；
替换前端逐曲循环删除（原先每曲触发一次全量重扫）

Author: Applesaber

ChuChartManager/Controllers/MusicController.cs

@@ -1357,6 +1357,58 @@ public ActionResult DeleteMusic([FromQuery] int id, [FromQuery] string assetDir)
         return Ok();
     }
 
+    public record BatchDeleteResult(int Id, string AssetDir, bool Ok, string? Error);
+
+    [HttpPost]
+    public ActionResult<List<BatchDeleteResult>> BatchDelete([FromBody] BatchMusicIdDto dto)
+    {
+        var scanner = scannerService.Scanner;
+        if (scanner == null) return NotFound();
+
+        var results = new List<BatchDeleteResult>();
+        foreach (var item in dto.Ids)
+        {
+            try
+            {
+                if (item.AssetDir == "A000")
+                {
+                    results.Add(new BatchDeleteResult(item.Id, item.AssetDir, false, "不能删除 A000 的曲目"));
+                    continue;
+                }
+
+                var music = FindMusic(scanner, item.Id, item.AssetDir);
+                if (music == null)
+                {
+                    results.Add(new BatchDeleteResult(item.Id, item.AssetDir, false, "曲目不存在"));
+                    continue;
+                }
+
+                if (Directory.Exists(music.MusicDirectory))
+                    Directory.Delete(music.MusicDirectory, true);
+
+                var optRoot = ResolveOptRoot(item.AssetDir);
+                if (optRoot != null)
+                {
+                    var cueDir = Path.Combine(optRoot, "cueFile", $"cueFile{item.Id:D6}");
+                    if (Directory.Exists(cueDir))
+                        Directory.Delete(cueDir, true);
+                }
+
+                results.Add(new BatchDeleteResult(item.Id, item.AssetDir, true, null));
+            }
+            catch (Exception ex)
+            {
+                results.Add(new BatchDeleteResult(item.Id, item.AssetDir, false, ex.Message));
+            }
+        }
+
+        var newScanner = new MusicScanner(StaticSettings.GamePath);
+        newScanner.ScanAll();
+        StaticSettings.Scanner = newScanner;
+
+        return Ok(results);
+    }
+
     [HttpPost]
     public ActionResult OpenExplorer([FromQuery] int id, [FromQuery] string assetDir)
     {

ChuChartManager/Front/src/api/index.ts

@@ -71,6 +71,18 @@ export async function getIdConflicts(id: number, assetDir: string): Promise<stri
   return data
 }
 
+export interface BatchDeleteResult {
+  id: number
+  assetDir: string
+  ok: boolean
+  error?: string
+}
+
+export async function batchDelete(items: { id: number; assetDir: string }[]): Promise<BatchDeleteResult[]> {
+  const { data } = await apiClient.post('/api/Music/BatchDelete', { ids: items })
+  return data
+}
+
 export async function getSources(): Promise<string[]> {
   const { data } = await apiClient.get('/api/Music/GetSources')
   return data

ChuChartManager/Front/src/locales/en.yaml

@@ -390,6 +390,7 @@ batch:
   executing: Executing…
   noMusicSelected: Please select music first
   done: Done
+  deletePartial: "Delete finished: {ok} succeeded, {fail} failed"
   downloading: Downloading…
   next: Next
   previous: Previous

ChuChartManager/Front/src/locales/ja.yaml

@@ -381,6 +381,7 @@ batch:
   executing: 実行中…
   noMusicSelected: 楽曲を選択してください
   done: 完了
+  deletePartial: "削除完了：成功 {ok} 件、失敗 {fail} 件"
   downloading: ダウンロード中…
   next: 次へ
   previous: 戻る

ChuChartManager/Front/src/locales/zh.yaml

@@ -390,6 +390,7 @@ batch:
   executing: 执行中…
   noMusicSelected: 请先选择曲目
   done: 完成
+  deletePartial: "删除完成：成功 {ok} 个，失败 {fail} 个"
   downloading: 正在下载…
   next: 下一步
   previous: 上一步

ChuChartManager/Front/src/views/BatchAction/ChooseAction.tsx

@@ -3,8 +3,7 @@ import { Button, Radio, Select, Popover, addToast } from '@munet/ui'
 import type { SelectOption } from '@munet/ui'
 import { useI18n } from 'vue-i18n'
 import { useStorage } from '@vueuse/core'
-import { apiClient, getMusicList, type MusicListItem } from '@/api'
-import { deleteMusic } from '@/api/customResource'
+import { apiClient, getMusicList, batchDelete, type MusicListItem } from '@/api'
 import { STEP } from './index'
 import remoteExport from './remoteExport'
 
@@ -72,8 +71,14 @@ export default defineComponent({
         case OPTIONS.Delete: {
           loading.value = true
           try {
-            for (const m of props.selectedMusic) await deleteMusic(m.id, m.assetDir)
-            addToast({ message: t('batch.done'), type: 'success' })
+            const items = props.selectedMusic.map(m => ({ id: m.id, assetDir: m.assetDir }))
+            const results = await batchDelete(items)
+            const failed = results.filter(r => !r.ok)
+            if (failed.length) {
+              addToast({ message: t('batch.deletePartial', { ok: results.length - failed.length, fail: failed.length }), type: 'error' })
+            } else {
+              addToast({ message: t('batch.done'), type: 'success' })
+            }
             props.onListUpdated(await getMusicList())
             props.continue(STEP.Select)
           } catch (e: any) {