[DEV-86] Enable automatic conflict sync/resolution across all open PRs in the repo via configuration

[danii1]

Task: DEV-86

Summary: Enable automatic conflict sync/resolution across all open PRs in the repo via configuration

Implementation Details

I'll start by exploring the repository structure and checking the existing state of the work mentioned in the comments.
The current branch is feature/dev-86-attempt-5. Let me check the state of this branch and previous attempts.
Previous attempt-4 has partial work. Let me examine it.
I have a good understanding of the codebase now. Let me examine the rest of the attempt-4 diff to decide what to reuse.
The attempt-4 branch mixes DEV-86 work with unrelated license-check changes. Notably, DEV-87 (already merged to main) removed a requireTeamAutomation gate. Let me verify main's current state.
Main has already removed the requireTeamAutomation gate via DEV-87, so attempt-4's license-check changes are stale and must be excluded. Let me see the remainder of the attempt-4 acquirer diff and the test changes.
Attempt-4 contains solid DEV-86 work mixed with stale team-tier licensing changes that conflict with merged DEV-87 (which removed that gate). My plan: apply only the DEV-86-relevant parts onto this fresh branch.
ConditionalResult lives in the acquirer file itself. Now let me check if files drifted between attempt-4's base and current main.
DEV-87 didn't touch the acquirer files. Now applying the clean DEV-86 pieces:
All hunks are DEV-86-specific. Checking out the acquirer, its tests, and docs from attempt-4:
Now wiring index.ts. Let me read the relevant sections on the current branch:
Now the worker --help env var docs:
Now wiring workspace-worker.ts (fleet mode):
Now verifying my branch matches attempt-4 on all DEV-86 files, differing only where DEV-87 landed:
Only the intentionally-excluded stale license changes differ. Now running verification — typecheck first, then tests:
894 pass, 1 fail. Let me identify the failure:
This failure is in automation-acquirer.test.ts — unrelated to my change. Let me check if it's pre-existing on main:
Confirmed pre-existing on main — unrelated to this change. Now running the acquirer test suite specifically:
All 33 acquirer tests pass (including the new sync-all-PRs suite). Running lint + format:
All checks green. Let me check whether feature branches typically update the CHANGELOG:
DEV-87 added a CHANGELOG entry, so I'll add one for DEV-86 under [Unreleased]:
Final review of the complete acquirer implementation:
Docs frontmatter is current. Final full test run:
DEV-86 is implemented on feature/dev-86-attempt-5 (uncommitted, per repo convention).

What was done

Recovered the partial work from the interrupted attempt (feature/dev-86-attempt-4), discarding its stale team-tier licensing changes (superseded by merged DEV-87) and rebuilding cleanly on current main.

Feature: WORKER_BASE_SYNC_ALL_PRS env var (default: off — existing behavior unchanged)

• Core logic — packages/code/src/lib/review-polling-acquirer.ts: new sweepRepoOpenPrs() discovery + pollForeignPr() base-sync-only polling; foreign PRs reuse the existing durable-event pipeline (maybeSyncBase) with an (external PR) audit marker. Closed/merged PRs drop from the open list, drafts excluded at both discovery and per-PR polling, fork PRs terminally skipped, rate limits handled via ETag conditional requests with a page-size-cap warning.
• Wiring — src/index.ts:843 (single-repo) and workspace-worker.ts:503 (fleet mode): listOpenPullRequests GitHub adapter + syncAllOpenPrs: process.env.WORKER_BASE_SYNC_ALL_PRS === "true".
• Auditability — watch/unwatch log lines (👀 watching …, 👋 left the open-PR list), (external PR) sync markers, resolver outcome comments on the PR, and conflict_resolution runs in the dashboard RunStore.
• Docs — new section in docs/code/worker.md (env var, default, trust boundaries), worker --help env listing, CHANGELOG entry.

Verification

• Typecheck ✅ · Lint ✅ · Format ✅
• Tests: 894 pass / 1 fail — the failure (automation-acquirer.test.ts) reproduces on clean main, pre-existing and unrelated
• All 33 acquirer tests pass, including 11 new ones covering: default-off no-op, foreign sync without feedback addressing, ETag/304 list reuse, restart hydration, own-PR dedupe, draft exclusion, closed-PR removal, fork skip, missing-list degradation, and run recording

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This PR was automatically created by @devintern/code

[danii1]

🔀 This branch had merge conflicts with main; devintern resolved them and pushed the merge. Please double-check the resolution.