feat: add web search, file edit, MCP management, file refs, and /stop to CLI/TUI (#348)

apps/gateway/src/commands/command-executor.service.ts

@@ -7,6 +7,7 @@ import { ChatGateway } from '../chat/chat.gateway.js';
 import { SessionGCService } from '../gc/session-gc.service.js';
 import { SystemOverrideService } from '../preferences/system-override.service.js';
 import { ReloadService } from '../reload/reload.service.js';
+import { McpClientService } from '../mcp-client/mcp-client.service.js';
 import { BRAIN } from '../brain/brain.tokens.js';
 import { COMMANDS_REDIS } from './commands.tokens.js';
 import { CommandRegistryService } from './command-registry.service.js';
@@ -28,6 +29,9 @@ export class CommandExecutorService {
     @Optional()
     @Inject(forwardRef(() => ChatGateway))
     private readonly chatGateway: ChatGateway | null,
+    @Optional()
+    @Inject(McpClientService)
+    private readonly mcpClient: McpClientService | null,
   ) {}
 
   async execute(payload: SlashCommandPayload, userId: string): Promise<SlashCommandResultPayload> {
@@ -105,6 +109,8 @@ export class CommandExecutorService {
           };
         case 'tools':
           return await this.handleTools(conversationId, userId);
+        case 'mcp':
+          return await this.handleMcp(args ?? null, conversationId);
         case 'reload': {
           if (!this.reloadService) {
             return {
@@ -489,4 +495,92 @@ export class CommandExecutorService {
       conversationId,
     };
   }
+
+  private async handleMcp(
+    args: string | null,
+    conversationId: string,
+  ): Promise<SlashCommandResultPayload> {
+    if (!this.mcpClient) {
+      return {
+        command: 'mcp',
+        conversationId,
+        success: false,
+        message: 'MCP client service is not available.',
+      };
+    }
+
+    const action = args?.trim().split(/\s+/)[0] ?? 'status';
+
+    switch (action) {
+      case 'status':
+      case 'servers': {
+        const statuses = this.mcpClient.getServerStatuses();
+        if (statuses.length === 0) {
+          return {
+            command: 'mcp',
+            conversationId,
+            success: true,
+            message:
+              'No MCP servers configured. Set MCP_SERVERS env var to connect external tool servers.',
+          };
+        }
+        const lines = ['MCP Server Status:\n'];
+        for (const s of statuses) {
+          const status = s.connected ? '✓ connected' : '✗ disconnected';
+          lines.push(`  ${s.name}: ${status}`);
+          lines.push(`    URL: ${s.url}`);
+          lines.push(`    Tools: ${s.toolCount}`);
+          if (s.error) lines.push(`    Error: ${s.error}`);
+          lines.push('');
+        }
+        const tools = this.mcpClient.getToolDefinitions();
+        if (tools.length > 0) {
+          lines.push(`Total bridged tools: ${tools.length}`);
+          lines.push(`Tool names: ${tools.map((t) => t.name).join(', ')}`);
+        }
+        return {
+          command: 'mcp',
+          conversationId,
+          success: true,
+          message: lines.join('\n'),
+        };
+      }
+
+      case 'reconnect': {
+        const serverName = args?.trim().split(/\s+/).slice(1).join(' ');
+        if (!serverName) {
+          return {
+            command: 'mcp',
+            conversationId,
+            success: false,
+            message: 'Usage: /mcp reconnect <server-name>',
+          };
+        }
+        try {
+          await this.mcpClient.reconnectServer(serverName);
+          return {
+            command: 'mcp',
+            conversationId,
+            success: true,
+            message: `MCP server "${serverName}" reconnected successfully.`,
+          };
+        } catch (err) {
+          return {
+            command: 'mcp',
+            conversationId,
+            success: false,
+            message: `Failed to reconnect MCP server "${serverName}": ${err instanceof Error ? err.message : String(err)}`,
+          };
+        }
+      }
+
+      default:
+        return {
+          command: 'mcp',
+          conversationId,
+          success: false,
+          message: `Unknown MCP action: "${action}". Use: /mcp status, /mcp servers, /mcp reconnect <name>`,
+        };
+    }
+  }
 }