feat(mcp): 实时更新和展示 MCP 服务器状态

- 新增 MCP 状态变更回调，支持 UI 实时刷新显示
- MCP 管理器中添加状态变更事件处理机制
- 调整 UI 组件以支持状态计数的高亮显示
- 移除 MCP 初始化失败的控制台错误输出，避免信息泄露
- 优化退出命令行提示颜色为灰色，提升可读性

Author: hqwlkj

src/mcp/mcp-manager.ts

@@ -45,6 +45,7 @@ export class McpManager {
   private configuredServerNames: string[] = [];
   private serverStatuses: McpServerStatus[] = [];
   private onToolsListChanged: (() => void) | null = null;
+  private onStatusChanged: (() => void) | null = null;
 
   prepare(servers?: Record<string, McpServerConfig>): void {
     if (!servers || Object.keys(servers).length === 0) return;
@@ -172,7 +173,8 @@ export class McpManager {
         if (this.disposed) break;
         client?.disconnect();
         const message = err instanceof Error ? err.message : String(err);
-        process.stderr.write(`[deepcode] MCP server "${name}" failed to initialize: ${message}\n`);
+        // 不在控制台输出错误日志，避免暴露敏感信息
+        // process.stderr.write(`[deepcode] MCP server "${name}" failed to initialize: ${message}\n`);
         this.setStatus({
           name,
           status: "failed",
@@ -376,13 +378,19 @@ export class McpManager {
     this.onToolsListChanged = handler;
   }
 
+  setOnStatusChanged(handler: () => void): void {
+    this.onStatusChanged = handler;
+  }
+
   private setStatus(status: McpServerStatus): void {
     if (this.disposed) return;
     const index = this.serverStatuses.findIndex((s) => s.name === status.name);
     if (index === -1) {
       this.serverStatuses.push(status);
-      return;
+    } else {
+      this.serverStatuses[index] = status;
     }
-    this.serverStatuses[index] = status;
+    // 触发状态变更回调
+    this.onStatusChanged?.();
   }
 }

src/session.ts

@@ -166,6 +166,7 @@ type SessionManagerOptions = {
   onAssistantMessage: (message: SessionMessage, shouldConnect: boolean) => void;
   onSessionEntryUpdated?: (entry: SessionEntry) => void;
   onLlmStreamProgress?: (progress: LlmStreamProgress) => void;
+  onMcpStatusChanged?: () => void;
 };
 
 export type LlmStreamProgress = {
@@ -184,6 +185,7 @@ export class SessionManager {
   private readonly onAssistantMessage: (message: SessionMessage, shouldConnect: boolean) => void;
   private readonly onSessionEntryUpdated?: (entry: SessionEntry) => void;
   private readonly onLlmStreamProgress?: (progress: LlmStreamProgress) => void;
+  private readonly onMcpStatusChanged?: () => void;
   private activeSessionId: string | null = null;
   private activePromptController: AbortController | null = null;
   private readonly sessionControllers = new Map<string, AbortController>();
@@ -198,6 +200,7 @@ export class SessionManager {
     this.onAssistantMessage = options.onAssistantMessage;
     this.onSessionEntryUpdated = options.onSessionEntryUpdated;
     this.onLlmStreamProgress = options.onLlmStreamProgress;
+    this.onMcpStatusChanged = options.onMcpStatusChanged;
     this.toolExecutor = new ToolExecutor(this.projectRoot, this.createOpenAIClient, this.mcpManager);
     this.mcpManager.prepare(this.getResolvedSettings().mcpServers);
   }
@@ -206,6 +209,10 @@ export class SessionManager {
     this.mcpManager.setOnToolsListChanged(() => {
       this.mcpToolDefinitions = this.mcpManager.getMcpToolDefinitions();
     });
+    // 设置状态变更回调，通知 UI 更新
+    this.mcpManager.setOnStatusChanged(() => {
+      this.onMcpStatusChanged?.();
+    });
     await this.mcpManager.initialize(servers);
     this.mcpToolDefinitions = this.mcpManager.getMcpToolDefinitions();
   }

src/ui/App.tsx

@@ -94,6 +94,10 @@ export function App({ projectRoot, version = "", onRestart }: AppProps): React.R
         }
         setStreamProgress(progress);
       },
+      onMcpStatusChanged: () => {
+        // 当 MCP 状态变更时，如果当前正在查看 MCP 状态页面，则更新显示
+        setMcpStatuses(sessionManager.getMcpStatus());
+      },
     });
   }, [projectRoot]);
 
@@ -156,7 +160,7 @@ export function App({ projectRoot, version = "", onRestart }: AppProps): React.R
           const resolved = resolveCurrentSettings(projectRoot);
           const summary = buildExitSummaryText({ session, messages: allMessages, model: resolved.model });
           process.stdout.write("\n");
-          process.stdout.write(chalk.green("> /exit "));
+          process.stdout.write(chalk.rgb(128, 128, 128)("> /exit "));
           process.stdout.write("\n\n");
           process.stdout.write(summary);
           process.stdout.write("\n\n");

src/ui/McpStatusList.tsx

@@ -131,14 +131,23 @@ export function McpStatusList({ statuses, onCancel }: Props): React.ReactElement
     >
       <Box flexDirection="column" borderStyle="round" borderDimColor flexGrow={1} overflow="hidden">
         {/* Header row */}
-        <Box paddingX={1}>
-          <Text bold color="cyanBright">
-            MCP Server Status
-          </Text>
+        <Box paddingX={1} gap={1}>
           <Text bold color="#229ac3">
-            {" "}
-            ({readyCount} ready, {startingCount} starting, {failedCount} failed)
+            Manage MCP servers
           </Text>
+          <Box gap={1}>
+            <Text dimColor>(</Text>
+            <Text color="green" bold>
+              {readyCount} ready,
+            </Text>
+            <Text color="yellow" bold>
+              {startingCount} starting,
+            </Text>
+            <Text color="red" bold>
+              {failedCount} failed
+            </Text>
+            <Text dimColor>)</Text>
+          </Box>
         </Box>
         {/* Items list */}
         <Box