@@ -4,6 +4,7 @@ import { Button, Modal, Radio, showTransactionalDialog, addToast } from '@munet/
 import { computed, defineComponent, ref, shallowRef } from 'vue';
 import JacketBox from '../JacketBox';
 import { DIFFICULTY } from '@/consts';
+import { isReadOnlyDir } from "@/store/refs";
 import api from '@/client/api';
 import CheckingModal from "@/views/Charts/ImportCreateChartButton/ImportChartButton/CheckingModal";
 import LevelTagsDisplay from "@/components/LevelTagsDisplay";
@@ -23,6 +24,10 @@ export let prepareReplaceChart = async (fileHandle?: FileSystemFileHandle, side?
 export default defineComponent({
   setup() {
 
+    // 替换一旦开始就把目标目录固定下来，确认时不能再读 selectedADir：
+    // 期间切到只读的 A000 会把写操作带偏
+    let replaceDir = selectedADir.value;
+
     const checking = ref(false);
     const file = shallowRef<File | null>(null);
     const show = ref<"" | "ma2" | "maidata" | "failed">("");
@@ -40,6 +45,9 @@ export default defineComponent({
 
     // 注：本功能的逻辑是，如果选择的是ma2文件，则只替换指定难度的谱面；如果选择的是maidata，则替换整首歌的所有难度。
     prepareReplaceChart = async (fHandle?: FileSystemFileHandle, side?: ChartSide) => {
+      // A000 只读：替换谱面是写操作，入口处直接挡掉
+      if (isReadOnlyDir.value) return;
+      replaceDir = selectedADir.value;
       targetSide.value = side;
       let selectedFile: File;
       if (!fHandle) {
@@ -86,7 +94,7 @@ export default defineComponent({
         const level = replacingMaidata ? -1 : selectedLevel.value;
         const side = replacingMaidata ? undefined : targetSide.value;
         show.value = "";
-        const result = (await api.ReplaceChart(selectMusicId.value, level, selectedADir.value, {
+        const result = (await api.ReplaceChart(selectMusicId.value, level, replaceDir, {
           file: uploadFile,
           shift: tempOption.value.shift,
           side,
 
@@ -2,7 +2,7 @@ import { computed, defineComponent, PropType, ref } from "vue";
 import noJacket from "@/assets/noJacket.webp";
 import api, { getUrl } from "@/client/api";
 import { showTransactionalDialog } from "@munet/ui";
-import { globalCapture, selectedADir, selectedMusic } from "@/store/refs";
+import { globalCapture, isReadOnlyDir, selectedADir, selectedMusic } from "@/store/refs";
 import { MusicXmlWithABJacket } from "@/client/apiGen";
 import { useI18n } from 'vue-i18n';
 import { pickFile } from "@/utils/pickFile";
@@ -24,6 +24,8 @@ export default defineComponent({
     if (props.upload)
       upload = async (fileHandle?: FileSystemFileHandle) => {
         if (!props.upload) return;
+        // A000 只读：点封面或拖拽换图都会走到这里
+        if (isReadOnlyDir.value) return;
         try {
           let file: File;
           if (!fileHandle) {
@@ -35,7 +37,8 @@ export default defineComponent({
             file = await fileHandle.getFile();
           }
 
-          const res = await api.SetMusicJacket(props.info.id!, selectedADir.value, { file });
+          // 用曲目自己的 assetDir：选文件是异步的，期间目录可能被切走/切到 A000
+          const res = await api.SetMusicJacket(props.info.id!, props.info.assetDir ?? selectedADir.value, { file });
           if (res.error) {
             const error = res.error as any;
             await showTransactionalDialog(t('jacket.setFailed'), error.message || error, undefined, true);
@@ -56,6 +59,7 @@ export default defineComponent({
         }
       }
 
-    return () => <img src={jacketUrl.value} class={`object-fill rounded-lg ${props.upload && 'cursor-pointer'}`} onClick={props.upload ? () => upload() : undefined} />
+    const canUpload = computed(() => props.upload && !isReadOnlyDir.value);
+    return () => <img src={jacketUrl.value} class={`object-fill rounded-lg ${canUpload.value && 'cursor-pointer'}`} onClick={canUpload.value ? () => upload() : undefined} />
   }
 })
@@ -60,7 +60,7 @@ assetDir:
 music:
   list:
     title: Chart List
-    searchPlaceholder: Search title / composer / charter / alias / ID
+    searchPlaceholder: Search title / composer / charter / ID
     tableTitle: Title
     tableCover: Cover
     tableVersion: Version
@@ -71,6 +71,8 @@ music:
     filterStandard: Standard
     filterDX: DX
     filterUtage: Utage
+    noMatch: No matching songs
+    clearSearch: Clear search
     unknown: Unknown
     filterBasic: Basic
     filterMaster: Master
@@ -81,6 +83,7 @@ music:
     sortByName: Name
     sortByVersion: Release
   edit:
+    selectHint: Select a chart to edit
     name: Song Title
     artist: Artist
     bpm: BPM
 
@@ -58,7 +58,7 @@ assetDir:
 music:
   list:
     title: 譜面列表
-    searchPlaceholder: 搜尋名稱 / 作曲 / 譜師 / 別名 / ID
+    searchPlaceholder: 搜尋名稱 / 作曲 / 譜師 / ID
     tableTitle: 標題
     tableCover: 封面
     tableVersion: 版本
@@ -69,6 +69,8 @@ music:
     filterStandard: 標準
     filterDX: DX
     filterUtage: 宴會場
+    noMatch: 沒有符合的曲目
+    clearSearch: 清除搜尋
     unknown: 未知
     filterBasic: 綠
     filterMaster: 紫
@@ -79,6 +81,7 @@ music:
     sortByName: 名稱
     sortByVersion: 更新時間
   edit:
+    selectHint: 請選擇譜面以編輯
     name: 歌曲名稱
     artist: 作者
     bpm: BPM
 
@@ -58,7 +58,7 @@ assetDir:
 music:
   list:
     title: 谱面列表
-    searchPlaceholder: 搜索名称 / 作曲 / 谱师 / 别名 / ID
+    searchPlaceholder: 搜索名称 / 作曲 / 谱师 / ID
     tableTitle: 标题
     tableCover: 封面
     tableVersion: 版本
@@ -69,6 +69,8 @@ music:
     filterStandard: 标准
     filterDX: DX
     filterUtage: 宴会场
+    noMatch: 没有匹配的曲目
+    clearSearch: 清空搜索
     unknown: 未知
     filterBasic: 绿
     filterMaster: 紫
@@ -79,6 +81,7 @@ music:
     sortByName: 名称
     sortByVersion: 更新时间
   edit:
+    selectHint: 请选择谱面以编辑
     name: 名称
     artist: 作者
     bpm: BPM
 
@@ -77,6 +77,10 @@ export const musicList = computed(() =>
 export const selectedMusic = computed(() => musicList.value.find(m => m.id === selectMusicId.value));
 export const selectedLevel = ref(0);
 
+// A000 是游戏本体目录，只读。所有写入入口（保存/删除/导入/创建/替换谱面）都要先看它，
+// 只靠禁用样式挡不住键盘和 Ctrl+S 这类快捷操作。
+export const isReadOnlyDir = computed(() => selectedADir.value === 'A000');
+
 // 如ReplaceChart等后端接口可能会涉及对MusicXml中的信息进行修改后保存。此时前端updateMusicList时会发现相关数据出现变更，触发了MusicEdit/ChartPanel中的watch，造成发送多余的edit请求、同时modified也被错误设置为true。
 // 因此，对于涉及内部对xml进行修改后会自动保存的后端接口，可以在updateMusicList期间打开本选项，以阻止MusicEdit/ChartPanel中的sync动作。
 export const disableSync = ref(false);
@@ -85,9 +89,13 @@ export { aquaMaiConfig } from "@/views/ModManager/refs";
 
 export const saveMusicIfNeeded = async (id: number) => {
   if (!id) return;
-  const music = musicListAll.value.find(m => m.id === id);
-  if (!music?.modified) return;
-  await api.SaveMusic(id, selectedADir.value);
+  // 同 ID 曲目可能同时存在于多个目录（A000 与用户目录），按 id 单独取会命中别目录那条、
+  // 因它的 modified 是 false 而误判成「不用保存」。modified 只会标在正在编辑的曲目上，拿它定位即可。
+  const music = musicListAll.value.find(m => m.id === id && m.modified);
+  // 写入用曲目自己的 assetDir：这里是被失焦 / 切歌自动触发的，那一刻 selectedADir 可能已经变了，
+  // 切到只读的 A000 时更不能把待保存的内容写进去
+  if (!music?.assetDir || music.assetDir === 'A000') return;
+  await api.SaveMusic(id, music.assetDir);
   await updateMusicList();
 }
 
 
@@ -23,8 +23,12 @@ export const matchMusicKeyword = (music: MusicXmlWithABJacket, keyword: string)
   const value = keyword.trim().toLowerCase();
   if (!value) return true;
 
+  // 列表里的 ID 按 6 位补零显示（000123），所以补零形式也要能搜到
+  const rawId = (music.id ?? 0).toString();
+
   return (music.name ?? '').toLowerCase().includes(value)
     || (music.artist ?? '').toLowerCase().includes(value)
-    || (music.id ?? 0).toString().includes(value)
+    || rawId.includes(value)
+    || rawId.padStart(6, '0').includes(value)
     || (music.charts ?? []).some(chart => chart.designer?.toLowerCase().includes(value));
 };
@@ -1,6 +1,6 @@
 import { computed, defineComponent, ref, watch } from "vue";
 import { Button, Modal, NumberInput, Radio } from "@munet/ui";
-import { assetDirs, musicList, selectedADir, selectMusicId, updateMusicList } from "@/store/refs";
+import { assetDirs, isReadOnlyDir, musicList, selectedADir, selectMusicId, updateMusicList } from "@/store/refs";
 import dxIcon from "@/assets/dxIcon.png";
 import stdIcon from "@/assets/stdIcon.png";
 import api from "@/client/api";
@@ -35,6 +35,8 @@ export default defineComponent({
     })
 
     const save = async () => {
+      // 对话框打开期间目录可能被切到只读的 A000，保存前重新判一次
+      if (isReadOnlyDir.value) return;
       show.value = false;
       await api.AddMusic(id.value, selectedADir.value);
       await updateMusicList();
 
@@ -4,7 +4,7 @@ import SelectFileTypeTip from "./SelectFileTypeTip";
 import { LicenseStatus, MessageLevel } from "@/client/apiGen";
 import CheckingModal from "./CheckingModal";
 import api, { getUrl } from "@/client/api";
-import { globalCapture, selectedADir, selectMusicId, updateMusicList, version as appVersion } from "@/store/refs";
+import { globalCapture, isReadOnlyDir, selectedADir, selectMusicId, updateMusicList, version as appVersion } from "@/store/refs";
 import { appSettings } from "@/store/settings";
 import ErrorDisplayIdInput from "./ErrorDisplayIdInput";
 import ImportStepDisplay from "./ImportStepDisplay";
@@ -97,14 +97,18 @@ export default defineComponent({
       return !reject;
     }
 
+    // 导入一旦开始就把目标目录固定下来：中途切目录（尤其是切到只读的 A000）
+    // 也不能把写操作带偏，所有写入都用这个快照
+    let importDir = selectedADir.value;
+
     const uploadMovie = (id: number, movie: File, offset: number) => new Promise<void>((resolve, reject) => {
       currentMovieProgress.value = 0;
       const body = new FormData();
       body.append('padding', offset.toString());
       body.append('file', movie);
       body.append('file', movie);
       const controller = new AbortController();
-      fetchEventSource(getUrl(`SetMovieApi/${selectedADir.value}/${id}`), {
+      fetchEventSource(getUrl(`SetMovieApi/${importDir}/${id}`), {
         signal: controller.signal,
         method: 'PUT',
         body,
@@ -144,7 +148,7 @@ export default defineComponent({
       try {
         music.importStep = IMPORT_STEP.create;
 
-        const createRet = (await api.AddMusic(music.id, selectedADir.value)).data;
+        const createRet = (await api.AddMusic(music.id, importDir)).data;
         if (createRet) throw new Error(createRet);
 
         music.importStep = IMPORT_STEP.chart;
@@ -163,13 +167,13 @@ export default defineComponent({
             utageRightLevel: music.utageMapping.rightLevel,
           } : {}),
           debug: import.meta.env.DEV,
-          assetDir: selectedADir.value,
+          assetDir: importDir,
         })).data;
 
         errors.value.push(...res.errors!.map(it => ({ ...it, name: music.name })));
         if (res.fatal) {
           try {
-            await api.DeleteMusic(music.id, selectedADir.value);
+            await api.DeleteMusic(music.id, importDir);
           } catch {
           }
           return;
@@ -181,14 +185,14 @@ export default defineComponent({
         // 音频上应该应用的延迟audioPadding = 谱面上应用的延迟chartPadding - &first
         let audioPadding = chartPadding - music.first;
 
-        await api.SetAudio(music.id, selectedADir.value, { file: music.track, padding: audioPadding, ignoreGapless: !!tempOptions.value.ignoreGapless });
+        await api.SetAudio(music.id, importDir, { file: music.track, padding: audioPadding, ignoreGapless: !!tempOptions.value.ignoreGapless });
         if (music.previewTime) {
           // 因为&demo_seek和&demo_len都是相对于原始音源的，所以这里的时间必须要扣掉上面SetAudio时应用的padding。
           // 根据SetAudioApi的定义，padding为正表示歌曲前面被加了空白，因此原本的预览段在新的裁剪后的音频中的位置也要相应后移；padding为负反之。
           // 因此，直接给startTime和endTime都加上audioPadding即可。
           music.previewTime.startTime! += audioPadding;
           music.previewTime.endTime! += audioPadding
-          await api.SetAudioPreview(music.id, selectedADir.value, music.previewTime);
+          await api.SetAudioPreview(music.id, importDir, music.previewTime);
         }
 
         if (music.movie && !tempOptions.value.disableBga) {
@@ -202,7 +206,7 @@ export default defineComponent({
         }
 
         music.importStep = IMPORT_STEP.jacket;
-        if (music.bg) await api.SetMusicJacket(music.id, selectedADir.value, { file: music.bg });
+        if (music.bg) await api.SetMusicJacket(music.id, importDir, { file: music.bg });
 
         music.importStep = IMPORT_STEP.finish;
       } catch (e) {
@@ -218,14 +222,17 @@ export default defineComponent({
           // 如果是在创建乐曲这步就挂了，说明乐曲XML没有创建成功，则不需要删除乐曲。
           // 否则，在ID冲突的情况下，会把原本的乐曲给删除掉，见 https://github.com/MuNET-OSS/MaiChartManager/issues/34
           try {
-            await api.DeleteMusic(music.id, selectedADir.value);
+            await api.DeleteMusic(music.id, importDir);
           } catch {
           }
         }
       }
     }
 
     startProcess = async (dir?: ImportDirectory | ImportDirectory[]) => {
+      // A000 只读：拖拽进来的导入也要挡住，不只是点按钮
+      if (isReadOnlyDir.value) return;
+      importDir = selectedADir.value;
       let id = getNextUnusedMusicId();
       const usedIds = [] as number[];
       errors.value = [];
@@ -305,7 +312,7 @@ export default defineComponent({
       }
     }
 
-    return () => <Button onClick={() => startProcess()} variant="secondary">
+    return () => <Button onClick={() => startProcess()} disabled={isReadOnlyDir.value} variant="secondary">
       {t('chart.import.title')}
       <SelectFileTypeTip show={step.value === STEP.selectFile} closeModal={closeModal} />
       <CheckingModal title={t('chart.import.checkingTitle')} show={step.value === STEP.checking} closeModal={closeModal} />
 
@@ -2,21 +2,22 @@ import { Button, DropMenu } from "@munet/ui";
 import { computed, defineComponent, ref } from "vue";
 import ImportChartButton from "./ImportChartButton";
 import CreateMusicModal from "@/views/Charts/ImportCreateChartButton/CreateMusicModal";
+import { isReadOnlyDir } from "@/store/refs";
 import { useI18n } from 'vue-i18n';
 
 export default defineComponent({
   setup() {
     const showCreate = ref(false);
     const { t } = useI18n();
     const options = computed(() => [
-      { label: t('chart.import.create'), action: () => { showCreate.value = true; } },
+      { label: t('chart.import.create'), action: () => { showCreate.value = true; }, disabled: isReadOnlyDir.value },
     ]);
 
     return () => <div class="flex relative">
       <ImportChartButton />
       <DropMenu options={options.value} buttonText="" align="right">
         {{
-          trigger: (onClick: any) => <Button variant="secondary" class="px-.5 b-l b-l-solid b-l-[rgba(255,255,255,0.5)]" onClick={onClick}>
+          trigger: (onClick: any) => <Button variant="secondary" disabled={isReadOnlyDir.value} class="px-.5 b-l b-l-solid b-l-[rgba(255,255,255,0.5)]" onClick={onClick}>
             <span class="i-mdi-arrow-down-drop text-6 translate-y-.25" />
           </Button>
         }}