fix: 补回 servers.html 丢失的检测路径+卸载Agent功能

从 worktree 分支同步完整的 servers.html，补回：
- 批量操作栏"检测路径"按钮（搜索 workerman.bat 自动设置 target_path）
- 批量操作栏"卸载 Agent"按钮
- batchDetectPath() 和 batchUninstallAgent() 函数

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

web/app/servers.html

@@ -21,7 +21,7 @@
     </header>
     <main class="flex-1 overflow-y-auto p-6">
       <div id="serversTable" class="bg-slate-900 rounded-xl border border-slate-800 overflow-hidden">
-        <table class="w-full text-sm"><thead class="bg-slate-800/50 text-slate-400 text-xs uppercase"><tr><th class="px-4 py-3 w-10"><input type="checkbox" id="selectAll" onchange="toggleSelectAll(this.checked)" class="rounded border-slate-600 bg-slate-700 text-brand focus:ring-brand"></th><th class="text-left px-4 py-3">状态</th><th class="text-left px-4 py-3">名称</th><th class="text-left px-4 py-3">地址</th><th class="text-left px-4 py-3">分类</th><th class="text-left px-4 py-3">Agent</th><th class="text-left px-4 py-3">最后心跳</th><th class="text-right px-4 py-3">操作</th></tr></thead><tbody id="serversTbody" class="divide-y divide-slate-800"><tr><td colspan="8" class="px-4 py-8 text-center text-slate-500">加载中...</td></tr></tbody></table>
+        <table class="w-full text-sm"><thead class="bg-slate-800/50 text-slate-400 text-xs uppercase"><tr><th class="px-4 py-3 w-10"><input type="checkbox" id="selectAll" onchange="toggleSelectAll(this.checked)" class="rounded border-slate-600 bg-slate-700 text-brand focus:ring-brand"></th><th class="text-left px-4 py-3">Agent 状态</th><th class="text-left px-4 py-3">名称</th><th class="text-left px-4 py-3">地址</th><th class="text-left px-4 py-3">分类</th><th class="text-left px-4 py-3">Agent</th><th class="text-left px-4 py-3">最后心跳</th><th class="text-right px-4 py-3">操作</th></tr></thead><tbody id="serversTbody" class="divide-y divide-slate-800"><tr><td colspan="8" class="px-4 py-8 text-center text-slate-500">加载中...</td></tr></tbody></table>
       </div>
       <div class="mt-4 flex items-center justify-between text-xs text-slate-500"><span id="serverCount">共 -- 台</span><button onclick="loadServers()" class="px-3 py-1 bg-slate-800 hover:bg-slate-700 rounded-lg transition">刷新</button></div>
       <!-- Batch Action Bar -->
@@ -34,6 +34,8 @@
           <button onclick="batchCheck()" class="px-4 py-1.5 bg-emerald-600/80 hover:bg-emerald-600 text-white text-sm rounded-lg transition">健康检查</button>
           <button id="btnBatchInstall" onclick="batchInstallAgent()" class="px-4 py-1.5 bg-amber-600/80 hover:bg-amber-600 text-white text-sm rounded-lg transition disabled:opacity-30 disabled:cursor-not-allowed disabled:hover:bg-amber-600/80">安装 Agent</button>
           <button id="btnBatchUpgrade" onclick="batchUpgradeAgent()" class="px-4 py-1.5 bg-cyan-600/80 hover:bg-cyan-600 text-white text-sm rounded-lg transition disabled:opacity-30 disabled:cursor-not-allowed disabled:hover:bg-cyan-600/80">升级 Agent</button>
+          <button id="btnBatchDetect" onclick="batchDetectPath()" class="px-4 py-1.5 bg-violet-600/80 hover:bg-violet-600 text-white text-sm rounded-lg transition disabled:opacity-30 disabled:cursor-not-allowed disabled:hover:bg-violet-600/80">检测路径</button>
+          <button id="btnBatchUninstall" onclick="batchUninstallAgent()" class="px-4 py-1.5 bg-red-700/80 hover:bg-red-700 text-white text-sm rounded-lg transition disabled:opacity-30 disabled:cursor-not-allowed disabled:hover:bg-red-700/80">卸载 Agent</button>
           <button onclick="batchPush()" class="px-4 py-1.5 bg-brand hover:bg-brand-dark text-white text-sm rounded-lg transition">批量推送</button>
           <button onclick="batchDelete()" class="px-4 py-1.5 bg-red-600/80 hover:bg-red-600 text-white text-sm rounded-lg transition">批量删除</button>
         </div>
@@ -160,9 +162,10 @@
         <div class="bg-slate-900 border border-slate-700 rounded-xl p-6 w-full max-w-lg space-y-3">
           <h2 class="text-white font-semibold text-lg">批量导入服务器</h2>
           <div class="bg-slate-800/50 rounded-lg p-3 text-xs text-slate-400 space-y-1">
-            <p>1. <a href="javascript:void(0)" onclick="downloadCsvTemplate()" class="text-brand-light underline">下载 CSV 模板</a></p>
-            <p>2. 填写服务器信息（名称和地址为必填列）</p>
-            <p>3. 上传 CSV 文件，最多 500 行</p>
+            <p>1. <a href="/app/servers_import_template.csv" download="servers_import_template.csv" class="text-brand-light underline">下载 CSV 模板</a></p>
+            <p>2. 按模板格式填写（<span class="text-slate-200">名称</span>和<span class="text-slate-200">地址</span>必填，其余选填）</p>
+            <p>3. 认证方式填 <span class="text-slate-200">password</span> 或 <span class="text-slate-200">key</span>，默认 password</p>
+            <p>4. 上传 CSV 文件，最多 500 行</p>
           </div>
           <div>
             <label class="block text-slate-400 text-xs mb-1">选择 CSV 文件</label>
@@ -250,7 +253,7 @@
         if(!servers.length){tbody.innerHTML='<tr><td colspan="8" class="px-4 py-8 text-center text-slate-500">暂无服务器</td></tr>';return}
         tbody.innerHTML=servers.map(s=>`<tr class="hover:bg-slate-800/30 transition cursor-pointer ${selectedServerId===s.id?'bg-brand/5':''}" onclick="selectServer(${s.id})" id="row-${s.id}">
           <td class="px-4 py-3" onclick="event.stopPropagation()"><input type="checkbox" class="rounded border-slate-600 bg-slate-700 text-brand focus:ring-brand srv-chk" data-id="${s.id}" onchange="toggleSelect(${s.id},this.checked)" ${_selectedIds.has(s.id)?'checked':''}></td>
-          <td class="px-4 py-3"><span class="inline-block w-2.5 h-2.5 rounded-full ${s.is_online?'bg-green-400':'bg-red-400'} ${s.is_online?'':'animate-pulse'}"></span></td>
+          <td class="px-4 py-3">${s.agent_version?(s.is_online?'<span class="inline-flex items-center gap-1.5 text-xs"><span class="inline-block w-2 h-2 rounded-full bg-green-400"></span><span class="text-green-400">在线</span></span>':'<span class="inline-flex items-center gap-1.5 text-xs"><span class="inline-block w-2 h-2 rounded-full bg-red-400 animate-pulse"></span><span class="text-red-400">离线</span></span>'):'<span class="inline-flex items-center gap-1.5 text-xs"><span class="inline-block w-2 h-2 rounded-full bg-slate-600"></span><span class="text-slate-500">未安装</span></span>'}</td>
           <td class="px-4 py-3 text-white font-medium">${esc(s.name)}${driftBadge(s)}</td>
           <td class="px-4 py-3 text-slate-400">${esc(s.domain)}:${s.port||22}</td>
           <td class="px-4 py-3 text-slate-400">${esc(s.category||'--')}</td>
@@ -415,6 +418,10 @@
             ${s.is_online?`<button onclick="upgradeAgent()" id="upgradeAgentBtn"
               class="px-3 py-2 bg-slate-700 hover:bg-slate-600 text-white text-sm rounded-lg transition" title="下载最新 agent.py 并重启服务">
               ⬆ 升级 Agent
+            </button>
+            <button onclick="uninstallAgent()" id="uninstallAgentBtn"
+              class="px-3 py-2 bg-red-900/60 hover:bg-red-800 text-white text-sm rounded-lg transition" title="停止 Agent 服务并删除安装目录">
+              🗑 卸载 Agent
             </button>`:''}
             <span class="text-slate-500 text-xs">安装约需 30-60 秒；安装完成后 Agent 发送首次心跳约需再等 60 秒，状态徽章将自动更新为 <span class="text-green-400">● Agent 在线</span></span>
           </div>
@@ -477,6 +484,32 @@
       finally{if(btn){btn.disabled=false;btn.textContent='⬆ 升级 Agent'}}
     }
 
+    async function uninstallAgent(){
+      if(!selectedServerId)return;
+      if(!confirm('确定卸载该服务器的 Agent？\n将停止服务、删除 /opt/nexus-agent 目录和日志文件，并清除 Agent 状态。'))return;
+      const btn=document.getElementById('uninstallAgentBtn');
+      if(btn){btn.disabled=true;btn.textContent='卸载中...'}
+      const logEl=document.getElementById('remoteInstallLog');
+      const logText=document.getElementById('remoteInstallLogText');
+      logEl?.classList.remove('hidden');
+      logText.textContent='正在停止 Agent 服务并清理安装目录...\n';
+      try{
+        const r=await apiFetch(API+'/servers/'+selectedServerId+'/uninstall-agent',{method:'POST',headers:apiHeadersJSON()});
+        if(!r){logText.textContent+='请求失败\n';return}
+        const d=await r.json();
+        if(r.ok&&d.success){
+          logText.textContent+=d.stdout||'';
+          logText.textContent+='\n✓ Agent 卸载成功！';
+          toast('success','Agent 卸载成功');
+          setTimeout(loadServers,1000);
+        }else{
+          logText.textContent+=(d.detail||'卸载失败')+'\n';
+          toast('error','卸载失败');
+        }
+      }catch(e){logText.textContent+='错误: '+e.message;toast('error','卸载请求失败')}
+      finally{if(btn){btn.disabled=false;btn.textContent='🗑 卸载 Agent'}}
+    }
+
     function copyAgentCmd(){
       const cmd=document.getElementById('agentCmdText')?.textContent;
       if(cmd){
@@ -847,8 +880,12 @@
       });
       const btnInstall=document.getElementById('btnBatchInstall');
       const btnUpgrade=document.getElementById('btnBatchUpgrade');
+      const btnDetect=document.getElementById('btnBatchDetect');
+      const btnUninstall=document.getElementById('btnBatchUninstall');
       if(btnInstall) btnInstall.disabled=allInstalled;   // all have agent → disable install
       if(btnUpgrade) btnUpgrade.disabled=allNotInstalled; // none have agent → disable upgrade
+      if(btnDetect) btnDetect.disabled=allNotInstalled;   // need agent for SSH connection
+      if(btnUninstall) btnUninstall.disabled=allNotInstalled; // need agent for uninstall
     }
     function batchPush(){
       if(!_selectedIds.size){toast('warning','请先选择服务器');return}
@@ -901,18 +938,6 @@
     }
 
     // ── CSV Import ──
-    async function downloadCsvTemplate(){
-      try{
-        const r=await apiFetch(API+'/servers/import/template');
-        if(!r||!r.ok){toast('error','下载模板失败');return}
-        const blob=await r.blob();
-        const url=URL.createObjectURL(blob);
-        const a=document.createElement('a');a.href=url;a.download='servers_import_template.csv';
-        document.body.appendChild(a);a.click();document.body.removeChild(a);
-        URL.revokeObjectURL(url);
-        toast('success','模板已下载');
-      }catch(e){toast('error','下载失败: '+e.message)}
-    }
     function showImportModal(){
       document.getElementById('importFile').value='';
       document.getElementById('importProgress').classList.add('hidden');
@@ -990,6 +1015,40 @@
       }catch(e){toast('error','批量升级失败: '+e.message);hideBatchAgentModal()}
     }
 
+    async function batchDetectPath(){
+      if(!_selectedIds.size){toast('warning','请先选择服务器');return}
+      const ids=[..._selectedIds];
+      if(!confirm(`确定对 ${ids.length} 台服务器自动检测 target_path？\n将在 /www/wwwroot 下搜索 workerman.bat，找到后自动设置目标路径。`))return;
+      document.getElementById('batchAgentTitle').textContent='自动检测路径';
+      document.getElementById('batchAgentModal').classList.remove('hidden');
+      document.getElementById('batchAgentProgress').classList.remove('hidden');
+      document.getElementById('batchAgentResult').classList.add('hidden');
+      try{
+        const r=await apiFetch(API+'/servers/batch/detect-path',{method:'POST',headers:apiHeadersJSON(),body:JSON.stringify({server_ids:ids})});
+        if(!r){toast('error','请求失败');return}
+        const data=await r.json();
+        _showBatchAgentResult(data.results||[]);
+        loadServers();
+      }catch(e){toast('error','检测失败: '+e.message);hideBatchAgentModal()}
+    }
+
+    async function batchUninstallAgent(){
+      if(!_selectedIds.size){toast('warning','请先选择服务器');return}
+      const ids=[..._selectedIds];
+      if(!confirm(`确定对 ${ids.length} 台已安装 Agent 的服务器执行卸载？\n将停止服务、删除 /opt/nexus-agent 目录和日志文件，并清除 Agent 状态。`))return;
+      document.getElementById('batchAgentTitle').textContent='批量卸载 Agent';
+      document.getElementById('batchAgentModal').classList.remove('hidden');
+      document.getElementById('batchAgentProgress').classList.remove('hidden');
+      document.getElementById('batchAgentResult').classList.add('hidden');
+      try{
+        const r=await apiFetch(API+'/servers/batch/uninstall-agent',{method:'POST',headers:apiHeadersJSON(),body:JSON.stringify({server_ids:ids})});
+        if(!r){toast('error','请求失败');return}
+        const data=await r.json();
+        _showBatchAgentResult(data.results||[]);
+        loadServers();
+      }catch(e){toast('error','卸载失败: '+e.message);hideBatchAgentModal()}
+    }
+
     function _showBatchAgentResult(results){
       document.getElementById('batchAgentProgress').classList.add('hidden');
       document.getElementById('batchAgentResult').classList.remove('hidden');
@@ -999,8 +1058,8 @@
       document.getElementById('batchAgentFail').textContent=fail;
       const details=document.getElementById('batchAgentDetails');
       details.innerHTML=results.map(r=>{
-        if(r.success)return `<div class="flex items-center gap-2 text-xs text-emerald-400"><span>✓</span><span>${esc(r.server_name)}</span></div>`;
-        return `<div class="flex items-center gap-2 text-xs text-red-400"><span>✗</span><span>${esc(r.server_name)}</span><span class="text-slate-500 truncate">${esc(r.error)}</span></div>`;
+        if(r.success)return `<div class="flex items-center gap-2 text-xs text-emerald-400"><span>✓</span><span>${esc(r.server_name)}</span>${r.stdout?`<span class="text-slate-400">${esc(r.stdout)}</span>`:''}</div>`;
+        return `<div class="flex items-center gap-2 text-xs text-red-400"><span>✗</span><span>${esc(r.server_name)}</span><span class="text-slate-500 truncate" title="${esc(r.error)}">${esc(r.error)}</span></div>`;
       }).join('');
     }