feat(ai-review): run writeback on worker with live progress (PR6)

[joaoviana]

Part 6/9. Moves the (multi-minute) writeback off the API request onto the Graphile worker, with live progress.

• New aiAgentReviewWriteback EE scheduler task; POST .../writeback now enqueues + sets queued and returns immediately.
• Worker runs the engine with onProgress streaming phase messages onto the item; lightweight GET .../review-items/{fingerprint} for cheap polling.
• Migration adds pr_writeback_status / pr_writeback_message.

Regression analysis: changes the writeback trigger from sync → async. Only affects the new, flag-gated review-writeback path; the chat proposeWriteback tool is untouched.

🤖 Generated with Claude Code

[joaoviana]

• fix(ai-review): writeback resilience — fail fast, recover orphaned/timed-out runs, guard reconcile #23670
• fix(ai-review): writeback hardening — progress-write race + resilience #23669
• fix(ai-review): gate Create-PR button on server-computed eligibility (GitHub + flags) #23668
• feat(ai-review): run writeback on worker with live progress (PR6) #23667 👈 (View in Graphite)
• feat(ai-review): review-queue UI — Create PR, dismiss, status + PR link #23666
• feat(ai-review): lazy reconcile of linked PR state (merged→resolved, closed→open) #23665
• feat(ai-review): finding→writeback bridge (POST /review-items/:fingerprint/writeback) #23664
• chore(ai-review): status mutations for review items (PATCH /review-items/:fingerprint) #23663
• feat(ai-review): persist ai_agent_review_item (review-queue state) #23662
• main

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[github-actions]

🧪 Test Selection

✅ Tests that will run

Test	Description
Preview Environment	Deploys a preview environment for testing
Frontend E2E Tests	Runs Cypress app tests
Backend API Tests	Runs Vitest API tests
CLI Tests	Runs CLI integration and dbt version tests

⏭️ Tests skipped (no relevant file changes detected)

Test	How to trigger manually
Timezone Tests	Add test-timezone to PR description

Tip: Add test-all to your PR description to run all tests.

[github-actions]

Your preview environment pr-23667 has been deployed.

Preview environment endpoints are available at:

• https://lightdash-pr-23667.lightdash.okteto.dev
• https://lightdash-preview-pr-23667.lightdash.okteto.dev

[github-actions]

Preview Environment

🌐 URL: https://lightdash-preview-pr-23667.lightdash.okteto.dev

📋 Logs: View in GCP Console

🔧 SSH: ./scripts/okteto-ssh.sh 23667

[lightdash-bot]

🎉 This PR is included in version 0.3055.0 🎉

The release is available on:

• 0.3055.0
• GitHub release

Your semantic-release bot 📦🚀