chore: track upstream orchestrator V2 PR #2829

[aaditagrawal]

Summary

Start tracking upstream pingdotgg/t3code#2829 (feat(orchestrator): introduce new orchestrator) via the existing fork PR-track machinery.

• Updates config/upstream-pr-tracks.json to follow #2829 on codex/pr-2829-track
• Retires stale adapter tracks (#179 / #295 / #364) that already landed or closed upstream
• Documents the track in docs/custom-alpha-workflow.md

How to refresh

npm run sync:upstream-prs
# or: node scripts/sync-upstream-pr-tracks.mjs

That fetches upstream pull/2829/head into codex/pr-2829-track and prints unique commits / diff stats vs main (and codex/alpha if present).

Notes

• #2829 is still open, XXL (~190k+/80k-), and currently CONFLICTING with upstream main.
• This PR only adds tracking metadata — it does not port orchestration V2 onto the fork yet.
• The tracking tip is also pushed to origin/codex/pr-2829-track for shared refresh/compare.

Test plan

• npm run sync:upstream-prs refreshes codex/pr-2829-track
• Config JSON remains valid
• Docs list matches config/upstream-pr-tracks.json

  

Summary by CodeRabbit

• Documentation

  • Updated the custom workflow documentation to reflect the current upstream orchestrator V2 development track.
  • Clarified that previously tracked pull requests have been completed or closed upstream.

• Chores

  • Refreshed internal pull request tracking information by adding the active orchestrator work and removing retired entries.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: c814f7d6-98e0-494f-9479-8fef33954f3e

📥 Commits

Reviewing files that changed from the base of the PR and between 8dd08b6 and 282a294.

📒 Files selected for processing (2)

• config/upstream-pr-tracks.json
• docs/custom-alpha-workflow.md

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📝 Walkthrough

Walkthrough

The tracked upstream PR list now includes PR #2829 for the orchestrator V2 rewrite. The workflow documentation records this active track and marks PRs #179, #295, and #364 as retired.

Changes

Upstream PR tracking

Layer / File(s)	Summary
Update tracked upstream PRs config/upstream-pr-tracks.json, docs/custom-alpha-workflow.md	The configuration now tracks PR #2829 with its branch, URL, and status notes. The workflow documentation records PR #2829 as active and marks older tracks as merged or closed.

Estimated code review effort: 1 (Trivial) | ~5 minutes

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly identifies the metadata change: tracking upstream orchestrator V2 PR #2829.
Description check	✅ Passed	The description explains what changed, why, scope, refresh steps, and test plan, but it uses a Summary section instead of the template headings.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch codex/track-orchestrator-2829-a13c

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[github-actions]

Thread transfer impact

✅ Thread transfer remains within every enforced ceiling.

Provider	Metric	Main baseline	This PR	Impact	PR ceiling
Codex	Total thread wire	11.4 KiB	11.4 KiB	−6 B (−0.1%)	15.1 KiB	✅
Codex	Thread snapshot wire	5.5 KiB	5.5 KiB	+1 B (+0.0%)	7.3 KiB	✅
Codex	Live turn WebSocket wire	5.9 KiB	5.9 KiB	−7 B (−0.1%)	7.8 KiB	✅
Codex	Live turn WebSocket decoded	49.8 KiB	49.8 KiB	0 B (0.0%)	66.4 KiB	✅
Codex	Live turn messages	17	17	0 (0.0%)	21	✅
Claude	Total thread wire	11.4 KiB	11.4 KiB	−29 B (−0.2%)	15.1 KiB	✅
Claude	Thread snapshot wire	5.5 KiB	5.5 KiB	−2 B (−0.0%)	7.3 KiB	✅
Claude	Live turn WebSocket wire	5.9 KiB	5.9 KiB	−27 B (−0.4%)	7.8 KiB	✅
Claude	Live turn WebSocket decoded	50.6 KiB	50.6 KiB	0 B (0.0%)	66.4 KiB	✅
Claude	Live turn messages	17	17	0 (0.0%)	21	✅

Baseline: 8dd08b6 · PR result: 282a294 · Source CI: success

Scenario and decoded snapshot size

10 historical turns, 5 command tools per turn, 878.9 KiB retained MCP result per historical turn, and a 1.05 MiB retained result in the measured turn.

• Codex decoded thread snapshot: 94.7 KiB
• Claude decoded thread snapshot: 95.4 KiB

Updated in place by a trusted workflow. PR artifacts are strictly validated and never executed.