diff --git a/index.html b/index.html
index f20a3ca..d812ff5 100644
--- a/index.html
+++ b/index.html
@@ -12,8 +12,8 @@
 <main>
 <section id="home" class="view"><div class="hero"><h1>找到你想听的音乐</h1><p>搜索歌曲、歌手或专辑，加入下载队列即可。</p><form id="homeSearch" class="searchbar"><input id="homeKeyword" class="input" placeholder="输入歌曲名、歌手或专辑" autocomplete="off"><select id="homeSource" class="input"><option value="kw">小窝</option><option value="kg">小狗</option><option value="wy">小云</option><option value="tx">小Q</option></select><button class="btn">开始搜索</button></form></div><div class="card"><div class="section-head"><div class="title">最近下载</div><button class="btn alt" data-go="queue">查看全部</button></div><div id="recentTasks"></div></div></section>
 <section id="search" class="view"><div class="card"><div class="section-head"><div><div class="title">搜索音乐</div><div class="muted">支持歌曲名、歌手、专辑</div></div></div><form id="searchForm" class="row"><input id="keyword" class="input" placeholder="输入关键词" autocomplete="off"><select id="source" class="input"><option value="kw">小窝</option><option value="kg">小狗</option><option value="wy">小云</option><option value="tx">小Q</option></select><button class="btn">搜索</button></form></div><div id="resultsCard" class="card" style="display:none"><div class="section-head"><div><div class="title">搜索结果</div><div id="resultHint" class="muted"></div></div></div><div id="results" class="results"></div><button id="loadMore" class="btn alt loadmore" style="display:none">加载更多</button></div></section>
-<section id="queue" class="view"><div class="card"><div class="section-head"><div><div class="title">下载队列</div><div class="muted">任务会自动处理，完成后可在本地下载目录找到文件。</div></div></div><div id="taskTabs" class="task-tabs"><button class="active" data-filter="all">全部</button><button data-filter="active">进行中</button><button data-filter="done">已完成</button><button data-filter="error">失败</button></div><div id="tasks"></div></div></section>
-<section id="settings" class="view"><div class="settings-grid"><div class="card setting-card"><h3>音乐 API</h3><p>用于搜索和解析音乐资源，与 Downloader Web 服务分离。</p><div class="field"><label>API 地址</label><input id="amApi" class="input" placeholder="http://127.0.0.1:9530"></div><div class="notice">当前服务架构：Downloader Web 使用 9540，音乐 API 使用 9530。</div></div><div class="card setting-card"><h3>下载</h3><p>设置文件保存位置与默认音质。</p><div class="field"><label>本地下载目录</label><input id="downloadDir" class="input"></div><div class="field"><label>默认下载品质</label><select id="defaultQuality" class="input"><option value="standard">标准</option><option value="exhigh">高品质</option><option value="lossless">无损</option><option value="hires">Hi-Res</option><option value="sky">Sky</option><option value="jyeffect">高清音效</option><option value="jymaster">母带</option><option value="atmos">Atmos</option><option value="atmos_plus">Atmos+</option><option value="master">Master</option></select></div></div><div class="card setting-card"><h3>WebDAV</h3><p>可选的 NAS/远程音乐库同步配置。</p><div class="field"><label>WebDAV 地址</label><input id="davUrl" class="input" placeholder="https://nas.example.com/dav/music"></div><div class="row"><div class="field"><label>用户名</label><input id="davUser" class="input"></div><div class="field"><label>密码</label><input id="davPass" type="password" class="input"></div></div><div class="field"><label>远程音乐目录</label><input id="davPath" class="input" placeholder="Music"></div><div class="field"><label>同曲不同音质</label><select id="davVersionPolicy" class="input"><option value="keep">保留所有版本</option><option value="replace_lower">高音质下载后清理旧低音质</option></select><div class="notice">“清理旧低音质”只删除数据库中已确认属于同一首歌、且音质低于当前版本的旧 WebDAV 文件，不会扫描或删除未知文件。</div></div><div class="row" style="margin-top:15px"><button id="testDav" type="button" class="btn alt">测试连接</button><button id="saveSettings" type="button" class="btn">保存设置</button></div></div></div></section>
+<section id="queue" class="view"><div class="card"><div class="section-head"><div><div class="title">下载队列</div><div class="muted">任务会自动处理；本地文件是否保留由“设置 → 下载 → 本地文件策略”决定。</div></div></div><div id="taskTabs" class="task-tabs"><button class="active" data-filter="all">全部</button><button data-filter="active">进行中</button><button data-filter="done">已完成</button><button data-filter="error">失败</button></div><div id="tasks"></div></div></section>
+<section id="settings" class="view"><div class="settings-grid"><div class="card setting-card"><h3>音乐 API</h3><p>用于搜索和解析音乐资源，与 Downloader Web 服务分离。</p><div class="field"><label>API 地址</label><input id="amApi" class="input" placeholder="http://127.0.0.1:9530"></div><div class="notice">当前服务架构：Downloader Web 使用 9540，音乐 API 使用 9530。</div></div><div class="card setting-card"><h3>下载</h3><p>设置文件保存位置与默认音质。</p><div class="field"><label>本地下载目录</label><input id="downloadDir" class="input"></div><div class="field"><label>本地文件策略</label><select id="localFilePolicy" class="input"><option value="keep">保留本地文件</option><option value="delete_after_upload">WebDAV 上传成功后删除本地文件</option></select><div class="notice">仅在 WebDAV 上传成功或远端已存在相同大小文件后删除本地成品；上传失败不会删除。</div></div><div class="field"><label>默认下载品质</label><select id="defaultQuality" class="input"><option value="standard">标准</option><option value="exhigh">高品质</option><option value="lossless">无损</option><option value="hires">Hi-Res</option><option value="sky">Sky</option><option value="jyeffect">高清音效</option><option value="jymaster">母带</option><option value="atmos">Atmos</option><option value="atmos_plus">Atmos+</option><option value="master">Master</option></select></div></div><div class="card setting-card"><h3>WebDAV</h3><p>可选的 NAS/远程音乐库同步配置。</p><div class="field"><label>WebDAV 地址</label><input id="davUrl" class="input" placeholder="https://nas.example.com/dav/music"></div><div class="row"><div class="field"><label>用户名</label><input id="davUser" class="input"></div><div class="field"><label>密码</label><input id="davPass" type="password" class="input"></div></div><div class="field"><label>远程音乐目录</label><input id="davPath" class="input" placeholder="Music"></div><div class="field"><label>同曲不同音质</label><select id="davVersionPolicy" class="input"><option value="keep">保留所有版本</option><option value="replace_lower">高音质下载后清理旧低音质</option></select><div class="notice">“清理旧低音质”只删除数据库中已确认属于同一首歌、且音质低于当前版本的旧 WebDAV 文件，不会扫描或删除未知文件。</div></div><div class="row" style="margin-top:15px"><button id="testDav" type="button" class="btn alt">测试连接</button><button id="saveSettings" type="button" class="btn">保存设置</button></div></div></div></section>
 </main><nav class="mobile-nav" id="mobileNav"><button data-view="home">⌂<br>首页</button><button data-view="search">⌕<br>搜索</button><button data-view="queue">♫ <span id="mobileBadge">0</span><br>下载</button><button data-view="settings">⚙<br>设置</button></nav></div>
 <script>
 const $=id=>document.getElementById(id);let searchPage=1,searchKeyword='',searchSource='kw',searchLoading=false,hasMore=false,taskFilter='all';
@@ -32,8 +32,8 @@ function taskHtml(t){let pct=Math.max(0,Math.min(100,Number(t.progress)||0));let
 async function loadTasks(){try{const x=await api('/tasks');const all=x.data||[];const active=all.filter(t=>['pending','resolving','downloading'].includes(t.status));$('navBadge').textContent=active.length;$('mobileBadge').textContent=active.length;let arr=taskFilter==='active'?active:taskFilter==='done'?all.filter(t=>t.status==='done'):taskFilter==='error'?all.filter(t=>t.status==='error'):all;$('tasks').innerHTML=arr.length?arr.map(taskHtml).join(''):'<div class="empty">暂无任务</div>';$('tasks').querySelectorAll('.retry').forEach((b,i)=>b.addEventListener('click',async()=>{const errs=arr.filter(t=>t.status==='error');await api('/tasks/'+errs[i].id+'/retry',{method:'POST'});loadTasks()}))}catch(e){$('tasks').innerHTML='<div class="empty">加载失败：'+esc(e.message)+'</div>'}}
 async function loadRecent(){try{const x=await api('/tasks');const a=(x.data||[]).slice(0,5);$('recentTasks').innerHTML=a.length?a.map(taskHtml).join(''):'<div class="empty">还没有下载记录</div>'}catch(e){$('recentTasks').innerHTML='<div class="empty">加载失败</div>'}}
 document.querySelectorAll('#taskTabs button').forEach(b=>b.addEventListener('click',()=>{document.querySelectorAll('#taskTabs button').forEach(x=>x.classList.remove('active'));b.classList.add('active');taskFilter=b.dataset.filter;loadTasks()}));
-async function loadSettings(){try{const s=await api('/settings');$('amApi').value=s.amApi||'';$('downloadDir').value=s.downloadDir||'';$('davUrl').value=s.webdavUrl||'';$('davUser').value=s.webdavUser||'';$('davPass').value=s.webdavPass||'';$('davPath').value=s.webdavPath||'';$('defaultQuality').value=s.quality||'standard';$('davVersionPolicy').value=s.webdavVersionPolicy||'keep'}catch(e){alert('设置加载失败：'+e.message)}}
-$('saveSettings').addEventListener('click',async()=>{const b={amApi:$('amApi').value,downloadDir:$('downloadDir').value,webdavUrl:$('davUrl').value,webdavUser:$('davUser').value,webdavPass:$('davPass').value,webdavPath:$('davPath').value,quality:$('defaultQuality').value,webdavVersionPolicy:$('davVersionPolicy').value};try{await api('/settings',{method:'PUT',headers:{'Content-Type':'application/json'},body:JSON.stringify(b)});alert('设置已保存')}catch(e){alert('保存失败：'+e.message)}});
+async function loadSettings(){try{const s=await api('/settings');$('amApi').value=s.amApi||'';$('downloadDir').value=s.downloadDir||'';$('localFilePolicy').value=s.localFilePolicy||'keep';$('davUrl').value=s.webdavUrl||'';$('davUser').value=s.webdavUser||'';$('davPass').value=s.webdavPass||'';$('davPath').value=s.webdavPath||'';$('defaultQuality').value=s.quality||'standard';$('davVersionPolicy').value=s.webdavVersionPolicy||'keep'}catch(e){alert('设置加载失败：'+e.message)}}
+$('saveSettings').addEventListener('click',async()=>{const b={amApi:$('amApi').value,downloadDir:$('downloadDir').value,localFilePolicy:$('localFilePolicy').value,webdavUrl:$('davUrl').value,webdavUser:$('davUser').value,webdavPass:$('davPass').value,webdavPath:$('davPath').value,quality:$('defaultQuality').value,webdavVersionPolicy:$('davVersionPolicy').value};try{await api('/settings',{method:'PUT',headers:{'Content-Type':'application/json'},body:JSON.stringify(b)});alert('设置已保存')}catch(e){alert('保存失败：'+e.message)}});
 $('testDav').addEventListener('click',async()=>{try{const b={url:$('davUrl').value,user:$('davUser').value,pass:$('davPass').value,path:$('davPath').value};await api('/webdav/test',{method:'POST',headers:{'Content-Type':'application/json'},body:JSON.stringify(b)});alert('WebDAV 连接成功')}catch(e){alert('WebDAV 连接失败：'+e.message)}});
 go(location.hash.slice(1)||'home');loadRecent();setInterval(()=>{loadTasks();if(document.getElementById('home').classList.contains('active'))loadRecent()},3000);
 </script></body></html>
diff --git a/main.go b/main.go
index 4ad9f81..c2f552f 100644
--- a/main.go
+++ b/main.go
@@ -59,8 +59,8 @@ type SongRequest struct {
 	Quality string `json:"quality"`
 }
 type Config struct {
-	AMAPI, DownloadDir, WebDAVURL, WebDAVUser, WebDAVPass, WebDAVPath, DefaultQuality, WebDAVVersionPolicy string
-	WorkerCount                                                                                            int
+	AMAPI, DownloadDir, WebDAVURL, WebDAVUser, WebDAVPass, WebDAVPath, DefaultQuality, WebDAVVersionPolicy, LocalFilePolicy string
+	WorkerCount                                                                                                             int
 }
 type App struct {
 	db         *gorm.DB
@@ -89,6 +89,9 @@ func main() {
 	if a.cfg.WebDAVVersionPolicy == "" {
 		a.cfg.WebDAVVersionPolicy = "keep"
 	}
+	if a.cfg.LocalFilePolicy == "" {
+		a.cfg.LocalFilePolicy = "keep"
+	}
 	a.startWorkers()
 	r := gin.Default()
 	r.StaticFile("/", "/app/index.html")
@@ -125,6 +128,8 @@ func (a *App) loadSettings() {
 			a.cfg.DefaultQuality = s.Value
 		case "webdav_version_policy":
 			a.cfg.WebDAVVersionPolicy = s.Value
+		case "local_file_policy":
+			a.cfg.LocalFilePolicy = s.Value
 		}
 	}
 }
@@ -434,6 +439,7 @@ func (a *App) upload(t *Task) {
 			t.Status = "done"
 			t.Progress = 100
 			a.db.Save(t)
+			a.cleanupLocalFile(t)
 			return
 		}
 	}
@@ -453,6 +459,16 @@ func (a *App) upload(t *Task) {
 	t.Status = "done"
 	t.Progress = 100
 	a.db.Save(t)
+	a.cleanupLocalFile(t)
+}
+func (a *App) cleanupLocalFile(t *Task) {
+	if a.cfg.LocalFilePolicy != "delete_after_upload" || t.LocalPath == "" {
+		return
+	}
+	if err := os.Remove(t.LocalPath); err != nil && !os.IsNotExist(err) {
+		t.Error = "WebDAV 上传成功，但删除本地文件失败: " + err.Error()
+		a.db.Save(t)
+	}
 }
 func (a *App) removeLowerQualityVersions(client *gowebdav.Client, remote string, t *Task) {
 	levels := map[string]int{"standard": 1, "exhigh": 2, "sq": 3, "lossless": 4, "hires": 5, "jyeffect": 6, "sky": 7, "jymaster": 8, "atmos": 9, "atmos_plus": 10, "master": 11}
@@ -495,7 +511,7 @@ func (a *App) fail(t *Task, err error) {
 }
 
 func (a *App) getSettings(c *gin.Context) {
-	c.JSON(200, gin.H{"amApi": a.cfg.AMAPI, "downloadDir": a.cfg.DownloadDir, "webdavUrl": a.cfg.WebDAVURL, "webdavUser": a.cfg.WebDAVUser, "webdavPass": a.cfg.WebDAVPass, "webdavPath": a.cfg.WebDAVPath, "quality": a.cfg.DefaultQuality, "webdavVersionPolicy": a.cfg.WebDAVVersionPolicy})
+	c.JSON(200, gin.H{"amApi": a.cfg.AMAPI, "downloadDir": a.cfg.DownloadDir, "webdavUrl": a.cfg.WebDAVURL, "webdavUser": a.cfg.WebDAVUser, "webdavPass": a.cfg.WebDAVPass, "webdavPath": a.cfg.WebDAVPath, "quality": a.cfg.DefaultQuality, "webdavVersionPolicy": a.cfg.WebDAVVersionPolicy, "localFilePolicy": a.cfg.LocalFilePolicy})
 }
 func (a *App) putSettings(c *gin.Context) {
 	var v map[string]string
@@ -510,6 +526,9 @@ func (a *App) putSettings(c *gin.Context) {
 	if p := v["webdavVersionPolicy"]; p != "keep" && p != "replace_lower" {
 		v["webdavVersionPolicy"] = "keep"
 	}
+	if p := v["localFilePolicy"]; p != "keep" && p != "delete_after_upload" {
+		v["localFilePolicy"] = "keep"
+	}
 	if x := v["downloadDir"]; x != "" {
 		a.cfg.DownloadDir = x
 		a.save("download_dir", x)
@@ -523,7 +542,10 @@ func (a *App) putSettings(c *gin.Context) {
 	if p := v["webdavVersionPolicy"]; p == "keep" || p == "replace_lower" {
 		a.cfg.WebDAVVersionPolicy = p
 	}
-	for k, x := range map[string]string{"webdav_url": a.cfg.WebDAVURL, "webdav_user": a.cfg.WebDAVUser, "webdav_pass": a.cfg.WebDAVPass, "webdav_path": a.cfg.WebDAVPath, "quality": a.cfg.DefaultQuality, "webdav_version_policy": a.cfg.WebDAVVersionPolicy} {
+	if p := v["localFilePolicy"]; p == "keep" || p == "delete_after_upload" {
+		a.cfg.LocalFilePolicy = p
+	}
+	for k, x := range map[string]string{"webdav_url": a.cfg.WebDAVURL, "webdav_user": a.cfg.WebDAVUser, "webdav_pass": a.cfg.WebDAVPass, "webdav_path": a.cfg.WebDAVPath, "quality": a.cfg.DefaultQuality, "webdav_version_policy": a.cfg.WebDAVVersionPolicy, "local_file_policy": a.cfg.LocalFilePolicy} {
 		a.save(k, x)
 	}
 	c.JSON(200, gin.H{"ok": true})