[OPIK-5161] [FE] Scope v2 Playground to active project

[miguelgrc]

Details

Migrates the v2 Playground page from the hardcoded "playground" project to the active project context from the URL. This is part of the IA revamp (OPIK-4617) to make all pages project-scoped in v2.

Key changes:

• Trace and span creation now uses the active project name instead of the hardcoded PLAYGROUND_PROJECT_NAME constant
• Added source: "playground" on traces for proper source-based filtering (R3)
• Rules and metrics queries in RunOnDatasetDialog scoped to the active project via useActiveProjectId()
• Trace links in output cells use activeProjectId instead of looking up the "playground" project by name
• Removed project creation logic from RunOnDatasetDialog (no longer needed — active project always exists in v2)
• All changes to createLogPlaygroundProcessor are backward compatible (new projectName param defaults to PLAYGROUND_PROJECT_NAME)

Not included (deferred):

• TraceLogsSidebar integration (depends on T6) — playground traces are accessible by clicking individual output cells but not listed on the Logs page (by design, Logs filters source = sdk)

Change checklist

• User facing
• Documentation update

Issues

• OPIK-5161

Testing

• Verified traces are created in the active project when running prompts
• Verified trace links in experiment mode output cells open the correct trace detail
• Verified rules/metrics in RunOnDatasetDialog are scoped to the active project
• Verified v1 Playground still works unchanged (no v1 files modified)
• TypeScript and ESLint pass clean

Documentation

N/A

[github-actions]

🔄 Test environment deployment process has started

Phase 1: Deploying base version 1.10.55-4706 (from main branch) if environment doesn't exist
Phase 2: Building new images from PR branch miguelg/OPIK-5161-v2-playground-project-scope
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-5927.dev.comet.com
• Cluster: comet-ml-development
• Namespace: pr-5927
• Version: 1.10.55-5927-merge-1718
• 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-5927) has been cleaned up to free cluster resources. PVCs are preserved — re-deploy to restore the environment.

[CometActions]

🌙 Nightly cleanup: The test environment for this PR (pr-5927) has been cleaned up to free cluster resources. PVCs are preserved — re-deploy to restore the environment.