Autonomous SI Agent Swarms: Beyond Prompt-Response to Durable Multi-Day Engineering Workflows

import { EventEmitter } from &class="tok-comment">#39;node:events';
import { execSync } from &class="tok-comment">#39;node:child_process';
import * as fs from &class="tok-comment">#39;node:fs';

export interface SwarmTask {
  id: string;
  description: string;
  targetFile: string;
  status: &class="tok-comment">#39;pendingclass="tok-string">' | 'in_progressclass="tok-string">' | 'verifiedclass="tok-string">' | 'failed';
  retryCount: number;
}

export class SISwarmSupervisor extends EventEmitter {
  private tasks: Map<string, SwarmTask> = new Map();
  private maxRetries = 3;

  constructor(private workspaceDir: string) {
    super();
  }

  public registerTask(task: SwarmTask): void {
    this.tasks.set(task.id, task);
  }

  public async executeSwarm(): Promise<boolean> {
    console.log(class="tok-string">`[SI Supervisor] Launching autonomous swarm on workspace: ${this.workspaceDir}`);

    for (const [taskId, task] of this.tasks.entries()) {
      task.status = &class="tok-comment">#39;in_progress&#39;;
      let taskSuccess = false;

      while (task.retryCount <= this.maxRetries && !taskSuccess) {
        try {
          console.log(`
⚙️ Executing Task ${taskId} (Attempt ${task.retryCount + 1}): ${task.description}`);
          
          class="tok-comment">// 1. Delegate code modification to worker agent logic
          await this.dispatchWorkerExecution(task);

          class="tok-comment">// 2. Closed-Loop Gate: Run Static Typecheck & Automated Tests
          this.runVerificationGate();

          task.status = &class="tok-comment">#39;verified&#39;;
          taskSuccess = true;
          console.log(class="tok-string">`✅ Task ${taskId} verified with 100% zero errors!`);
        } catch (error: any) {
          task.retryCount++;
          console.warn(class="tok-string">`⚠️ Task ${taskId} failed verification: ${error.message}`);

          if (task.retryCount > this.maxRetries) {
            task.status = &class="tok-comment">#39;failed&#39;;
            console.error(class="tok-string">`❌ Task ${taskId} exceeded max retries. Swarm halting.`);
            return false;
          }

          class="tok-comment">// Trigger self-healing prompt injection
          await this.remediateFailure(task, error.message);
        }
      }
    }

    console.log(&class="tok-comment">#39;
🎉 Entire SI Swarm DAG completed successfully with 100% closed-loop verification!&class="tok-comment">#39;);
    return true;
  }

  private async dispatchWorkerExecution(task: SwarmTask): Promise<void> {
    class="tok-comment">// Worker modifies targeted workspace code
    this.emit(&class="tok-comment">#39;worker:dispatched&#39;, task);
  }

  private runVerificationGate(): void {
    class="tok-comment">// Mandatory strict validation: TypeScript compiler check
    execSync(&class="tok-comment">#39;npm run typecheckclass="tok-string">&#39;, { cwd: this.workspaceDir, stdio: &#39;pipe&#39; });
    class="tok-comment">// Mandatory unit test suite pass
    execSync(&class="tok-comment">#39;npm test -- --passWithNoTestsclass="tok-string">&#39;, { cwd: this.workspaceDir, stdio: &#39;pipe&#39; });
  }

  private async remediateFailure(task: SwarmTask, errorLog: string): Promise<void> {
    console.log(class="tok-string">`[Self-Healing] Injecting AST compiler error into debugging context for ${task.id}...`);
    class="tok-comment">// Pass compiler diagnostics directly to worker for targeted repair
  }
}