feat(copilot): let Run agent cancel workflow runs

[j15z]

Summary

• let the Run agent cancel workflow runs by workflow and execution ID
• route internal, Copilot, and v2 cancellations through the same authorized application operation
• preserve queued, active, paused, resumed, and workflow-group cancellation behavior
• preserve the v2 terminal no-op response contract while internal and Copilot callers retain conflict behavior

Type of Change

• New feature

Testing

• bun run lint
• bun run apps/sim/scripts/check-block-registry.ts origin/staging
• bun run check:audits
• focused Vitest coverage for the cancellation service, application use case, internal and v2 routes, and Copilot handler
• app and auth type-check

Checklist

• Code follows project style guidelines
• Self-reviewed my changes
• Tests added/updated and passing
• No new warnings introduced
• I confirm that I have read and agree to the terms outlined in the Contributor License Agreement (CLA)

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

1 Skipped Deployment

Project	Deployment	Actions	Updated (UTC)
docs	Skipped		Aug 28, 2026 12:54am

[greptile-apps]

Greptile Summary

The PR adds workflow-run cancellation to the Run agent and consolidates internal, Copilot, and v2 cancellation behind one authorized application operation.

• Preserves transport-specific terminal-run response behavior.
• Handles queued, active, paused, resumed, and workflow-group cancellation paths.
• Strengthens abort rollback and active-resume reconciliation so cancellation finalizes only after required stop signals are confirmed.

Confidence Score: 5/5

The PR appears safe to merge.

No blocking failure remains.

Important Files Changed

Filename	Overview
apps/sim/lib/execution/cancel-workflow-execution.ts	Centralizes cancellation reconciliation and confirms all relevant active-resume stops before publishing or completing paused cancellation.
apps/sim/lib/workflows/application/cancel-run.ts	Provides the shared authorized application operation used by all cancellation transports.
apps/sim/lib/copilot/tools/handlers/workflow/mutations.ts	Delegates Run-agent cancellation through the shared use case with the trusted principal and abort signal.
apps/sim/app/api/v2/workflows/[workflowId]/runs/[runId]/cancel/route.ts	Uses the shared cancellation operation while retaining the v2 terminal no-op projection.
apps/sim/app/api/workflows/[id]/executions/[executionId]/cancel/route.ts	Reduces the internal route to authentication, input mapping, and application-operation delegation.

Sequence Diagram

sequenceDiagram
  participant Caller as Internal / Copilot / v2
  participant App as cancelWorkflowRun
  participant Auth as Workflow authorization
  participant Exec as Cancellation reconciliation
  Caller->>App: principal + workflowId + runId + AbortSignal
  App->>Auth: authorize write access and resolve run context
  Auth-->>App: canonical workflow/run context
  App->>Exec: cancel execution
  Exec->>Exec: stage paused state and signal active work
  Exec->>Exec: confirm original and replacement resume stops
  Exec->>Exec: publish terminal event and finalize state
  Exec-->>App: cancellation result or terminal error
  App-->>Caller: transport-specific response

Loading

_{Reviews (10): Last reviewed commit: "fix(workflows): confirm every active res..." | Re-trigger Greptile}

[cubic-dev-ai]

All reported issues were addressed across 9 files

<sub>Reply with feedback, questions, or to request a fix.

Re-trigger cubic</sub>

[j15z]

@greptile

[j15z]

@greptile

[j15z]

@greptile

[j15z]

@greptile

[j15z]

@greptile

[j15z]

@greptile

[j15z]

@greptile

[j15z]

@greptile

[j15z]

@greptile