fix(acp-agents): allow deleting remote server entries

pr-body.md

@@ -0,0 +1,25 @@
+## Summary
+
+Fixes #2035
+
+Adds the ability to delete remote server entries from the ACP Agents configuration page. Previously, when a remote SSH server was used, an ACP Agent entry was auto-created but could not be removed. If the server was no longer in use, the entry cluttered the UI indefinitely.
+
+## Changes
+
+- **AcpAgentsConfig.tsx**: Added a `deleteRemoteConnection` handler that calls `sshApi.deleteConnection()`, removes the connection from `savedConnections` state, cleans up probe data, and shows success/error notifications. Added a Delete button (red/danger variant) next to the existing Refresh button for each remote server row.
+- **Locale files** (`en-US`, `zh-CN`, `zh-TW`): Added `remote.deleteConnection`, `remote.deleteConfirm`, `notifications.deleteConnectionSuccess`, and `notifications.deleteConnectionFailed` keys.
+
+## Behavior
+
+1. User clicks the Delete button on a remote server row
+2. A confirmation dialog asks: "Remove the remote server \"{{name}}\" from saved SSH connections? Its ACP agent entries will also be removed."
+3. On confirm, `sshApi.deleteConnection(connectionId)` is called
+4. The connection is removed from the saved connections list and probe data is cleaned up
+5. A success notification is shown (or error notification on failure)
+
+## Validation
+
+- TypeScript: `tsc --noEmit` passes (no errors in modified files)
+- Tests: All 7 existing `AcpAgentsConfig.test.tsx` tests pass
+- i18n audit: `pnpm run i18n:audit` passes with 0 warnings
+- Locale key parity verified across en-US, zh-CN, zh-TW

src/web-ui/src/infrastructure/config/components/AcpAgentsConfig.tsx

@@ -13,6 +13,7 @@ import {
   Search,
   Server,
   Terminal,
+  Trash2,
 } from 'lucide-react';
 import { Button, Input, Select, Textarea } from '@/component-library';
 import {
@@ -379,6 +380,7 @@ const AcpAgentsConfig: React.FC = () => {
   const [registryFilter, setRegistryFilter] = useState<RegistryFilter>('all');
   const [installingClientIds, setInstallingClientIds] = useState<Set<string>>(() => new Set());
   const [installingRemoteClientIds, setInstallingRemoteClientIds] = useState<Set<string>>(() => new Set());
+  const [deletingRemoteIds, setDeletingRemoteIds] = useState<Set<string>>(() => new Set());
   const requirementProbeRequestIdRef = useRef(0);
   const savingConfigRef = useRef(false);
   const loadedRemoteProbeIdsRef = useRef<Set<string>>(new Set());
@@ -533,6 +535,35 @@ const AcpAgentsConfig: React.FC = () => {
     }
   }, [notifyError, t]);
 
+  const deleteRemoteConnection = useCallback(async (connectionId: string, connectionName: string) => {
+    const confirmed = await window.confirm(t('remote.deleteConfirm', { name: connectionName }));
+    if (!confirmed) return;
+
+    setDeletingRemoteIds(prev => new Set(prev).add(connectionId));
+    try {
+      await sshApi.deleteConnection(connectionId);
+      setSavedConnections(prev => prev.filter(conn => conn.id !== connectionId));
+      loadedRemoteProbeIdsRef.current.delete(connectionId);
+      setRemoteRequirementProbes(prev => {
+        const next = { ...prev };
+        delete next[connectionId];
+        return next;
+      });
+      notifySuccess(t('notifications.deleteConnectionSuccess'));
+    } catch (error) {
+      log.error('Failed to delete remote SSH connection', error);
+      notifyError(error instanceof Error ? error.message : String(error), {
+        title: t('notifications.deleteConnectionFailed'),
+      });
+    } finally {
+      setDeletingRemoteIds(prev => {
+        const next = new Set(prev);
+        next.delete(connectionId);
+        return next;
+      });
+    }
+  }, [notifyError, notifySuccess, t]);
+
   const loadConfig = useCallback(async (
     options: { showLoading?: boolean; refreshRequirements?: boolean } = {}
   ) => {
@@ -1397,6 +1428,7 @@ const AcpAgentsConfig: React.FC = () => {
                     connection.id
                   );
                   const probingRemote = probingRemoteRequirements.has(connection.id);
+                  const deletingRemote = deletingRemoteIds.has(connection.id);
                   const remoteRows = remoteAgentIds.map(clientId => {
                     const preset = PRESET_BY_ID.get(clientId);
                     const clientConfig = config.acpClients[clientId];
@@ -1502,6 +1534,17 @@ const AcpAgentsConfig: React.FC = () => {
                             <RefreshCw size={14} />
                             {t('remote.refreshDetection')}
                           </Button>
+                          <Button
+                            variant="danger"
+                            size="small"
+                            onClick={() => {
+                              void deleteRemoteConnection(connection.id, connection.name || connection.id);
+                            }}
+                            isLoading={deletingRemote}
+                          >
+                            <Trash2 size={14} />
+                            {t('remote.deleteConnection')}
+                          </Button>
                         </div>
                       </div>
                       <div

src/web-ui/src/locales/en-US/settings/acp-agents.json

@@ -71,6 +71,8 @@
     "empty": "No saved SSH servers.",
     "noAgents": "Add an ACP agent before checking remote servers.",
     "refreshDetection": "Refresh detection",
+    "deleteConnection": "Delete",
+    "deleteConfirm": "Remove the remote server \"{{name}}\" from saved SSH connections? Its ACP agent entries will also be removed.",
     "summary": "{{available}} / {{total}} available",
     "issueSummary": "{{count}} issue(s)"
   },
@@ -112,6 +114,8 @@
     "downloadSuccess": "ACP agent CLI downloaded",
     "downloadFailed": "Failed to download ACP agent CLI",
     "predownloadSuccess": "ACP adapter downloaded",
-    "predownloadFailed": "Failed to download ACP adapter"
+    "predownloadFailed": "Failed to download ACP adapter",
+    "deleteConnectionSuccess": "Remote server connection deleted",
+    "deleteConnectionFailed": "Failed to delete remote server connection"
   }
 }

src/web-ui/src/locales/zh-CN/settings/acp-agents.json

@@ -71,6 +71,8 @@
     "empty": "没有已保存的 SSH 服务器。",
     "noAgents": "请先添加 ACP Agent，再检测远程服务器。",
     "refreshDetection": "刷新检测",
+    "deleteConnection": "删除",
+    "deleteConfirm": "确定从已保存的 SSH 连接中移除远程服务器「{{name}}」吗？其 ACP Agent 条目也将一并移除。",
     "summary": "{{available}} / {{total}} 可用",
     "issueSummary": "{{count}} 个异常"
   },
@@ -112,6 +114,8 @@
     "downloadSuccess": "ACP Agent CLI 已下载",
     "downloadFailed": "下载 ACP Agent CLI 失败",
     "predownloadSuccess": "ACP 适配器已下载",
-    "predownloadFailed": "下载 ACP 适配器失败"
+    "predownloadFailed": "下载 ACP 适配器失败",
+    "deleteConnectionSuccess": "远程服务器连接已删除",
+    "deleteConnectionFailed": "删除远程服务器连接失败"
   }
 }

src/web-ui/src/locales/zh-TW/settings/acp-agents.json

@@ -71,6 +71,8 @@
     "empty": "沒有已儲存的 SSH 伺服器。",
     "noAgents": "請先新增 ACP Agent，再檢測遠端伺服器。",
     "refreshDetection": "重新整理檢測",
+    "deleteConnection": "刪除",
+    "deleteConfirm": "確定從已儲存的 SSH 連線中移除遠端伺服器「{{name}}」嗎？其 ACP Agent 條目也將一併移除。",
     "summary": "{{available}} / {{total}} 可用",
     "issueSummary": "{{count}} 個異常"
   },
@@ -112,6 +114,8 @@
     "downloadSuccess": "ACP Agent CLI 已下載",
     "downloadFailed": "下載 ACP Agent CLI 失敗",
     "predownloadSuccess": "ACP 適配器已下載",
-    "predownloadFailed": "下載 ACP 適配器失敗"
+    "predownloadFailed": "下載 ACP 適配器失敗",
+    "deleteConnectionSuccess": "遠端伺服器連線已刪除",
+    "deleteConnectionFailed": "刪除遠端伺服器連線失敗"
   }
 }