[OPIK-5628] [FE] Clear stale job state on sandbox disconnect

[miguelgrc]

Details

When an SDK connection dropped and a new one was established in the Agent Sandbox, results/errors from the previous session were still displayed. This was because activeJobId was never cleared on disconnect. The fix resets it in the existing isConnected effect so each new session starts clean.

Change checklist

• User facing
• Documentation update

Issues

• OPIK-5628

AI-WATERMARK

AI-WATERMARK: yes

• If yes:
  • Tools: Claude Code
  • Model(s): claude-opus-4-6
  • Scope: Implementation guided by human
  • Human verification: Yes — reviewed approach and code

Testing

• npx tsc --noEmit — passes
• npx eslint src/v2/pages/AgentRunnerPage/AgentRunnerContent.tsx — passes
• Manual scenario: connect SDK → run job that fails → disconnect → reconnect → verify error is gone

Documentation

N/A

[github-actions]

🔄 Test environment deployment process has started

Phase 1: Deploying base version 1.10.59-4806 (from main branch) if environment doesn't exist
Phase 2: Building new images from PR branch miguelg/OPIK-5628-clear-error-on-reconnect
Phase 3: Will deploy newly built version after build completes

You can monitor the progress here.

[CometActions]

✅ Test environment is now available!

To configure additional Environment variables for your environment, run [Deploy Opik AdHoc Environment workflow] (https://github.com/comet-ml/comet-deployment/actions/workflows/deploy_opik_adhoc_env.yaml)

Access Information

• URL: https://pr-6091.dev.comet.com
• Cluster: comet-ml-development
• Namespace: pr-6091
• Version: 1.10.59-6091-merge-1772
• Application logs: View in Grafana

The deployment has completed successfully and the version has been verified.

[CometActions]

🌙 Nightly cleanup: The test environment for this PR (pr-6091) has been cleaned up to free cluster resources. PVCs are preserved — re-deploy to restore the environment.

[github-actions]

🔄 Test environment deployment process has started

Phase 1: Deploying base version 1.10.59-4806 (from main branch) if environment doesn't exist
Phase 2: Building new images from PR branch miguelg/OPIK-5628-clear-error-on-reconnect
Phase 3: Will deploy newly built version after build completes

You can monitor the progress here.

[andrescrz]

LGTM.

[CometActions]

✅ Test environment is now available!

To configure additional Environment variables for your environment, run [Deploy Opik AdHoc Environment workflow] (https://github.com/comet-ml/comet-deployment/actions/workflows/deploy_opik_adhoc_env.yaml)

Access Information

• URL: https://pr-6091.dev.comet.com
• Cluster: comet-ml-development
• Namespace: pr-6091
• Version: 1.10.59-6091-merge-1774
• Application logs: View in Grafana

The deployment has completed successfully and the version has been verified.