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

apps/gateway/src/chat/chat.gateway.ts

@@ -18,6 +18,7 @@ import type {
   SlashCommandPayload,
   SystemReloadPayload,
   RoutingDecisionInfo,
+  AbortPayload,
 } from '@mosaic/types';
 import { AgentService, type ConversationHistoryMessage } from '../agent/agent.service.js';
 import { AUTH } from '../auth/auth.tokens.js';
@@ -325,6 +326,38 @@ export class ChatGateway implements OnGatewayInit, OnGatewayConnection, OnGatewa
     });
   }
 
+  @SubscribeMessage('abort')
+  async handleAbort(
+    @ConnectedSocket() client: Socket,
+    @MessageBody() data: AbortPayload,
+  ): Promise<void> {
+    const conversationId = data.conversationId;
+    this.logger.log(`Abort requested by ${client.id} for conversation ${conversationId}`);
+
+    const session = this.agentService.getSession(conversationId);
+    if (!session) {
+      client.emit('error', {
+        conversationId,
+        error: 'No active session to abort.',
+      });
+      return;
+    }
+
+    try {
+      await session.piSession.abort();
+      this.logger.log(`Agent session ${conversationId} aborted successfully`);
+    } catch (err) {
+      this.logger.error(
+        `Failed to abort session ${conversationId}`,
+        err instanceof Error ? err.stack : String(err),
+      );
+      client.emit('error', {
+        conversationId,
+        error: 'Failed to abort the agent operation.',
+      });
+    }
+  }
+
   @SubscribeMessage('command:execute')
   async handleCommandExecute(
     @ConnectedSocket() client: Socket,