fix(worker): resolve busy-loop and add dynamic auto-scaling #354

Merged

review.bot merged 1 commit from fix/worker-busy-loop-and-autoscale into develop

2026-03-02 17:28:58 +00:00

jack commented

2026-03-02 17:28:09 +00:00

Owner

Summary

Fix hub state corruption: handleTaskError in worker-hub now handles "Worker busy" rejections by setting a __busy__ sentinel instead of clearing currentTaskId, preventing the infinite retry loop that caused 500+ failed tasks
Add dispatch concurrency guard: isDispatching flag prevents overlapping async dispatchPendingTasks() calls
Add dynamic worker auto-scaling: New maybeScaleUpWorkers() spawns additional workers when all are busy (throttled to every 10s, respects MAX_WORKERS)
CSP fix: Allow Iconify CDN domains for UI-Kit icon loading
UI migration: Continue Nuxt 4 migration with settings components and dark theme fixes

Test plan

Deployed and verified: 0 "Worker busy" errors after fix
Auto-scaling working: workers scaled from 2 → 5 automatically
Failed task count stopped growing after deployment
Build passes (pnpm build)

## Summary - **Fix hub state corruption**: `handleTaskError` in worker-hub now handles "Worker busy" rejections by setting a `__busy__` sentinel instead of clearing `currentTaskId`, preventing the infinite retry loop that caused 500+ failed tasks - **Add dispatch concurrency guard**: `isDispatching` flag prevents overlapping async `dispatchPendingTasks()` calls - **Add dynamic worker auto-scaling**: New `maybeScaleUpWorkers()` spawns additional workers when all are busy (throttled to every 10s, respects MAX_WORKERS) - **CSP fix**: Allow Iconify CDN domains for UI-Kit icon loading - **UI migration**: Continue Nuxt 4 migration with settings components and dark theme fixes ## Test plan - [x] Deployed and verified: 0 "Worker busy" errors after fix - [x] Auto-scaling working: workers scaled from 2 → 5 automatically - [x] Failed task count stopped growing after deployment - [x] Build passes (`pnpm build`)

jack added 1 commit

2026-03-02 17:28:09 +00:00

fix(worker): resolve busy-loop and add dynamic auto-scaling b6c8d8f189

- Fix hub state corruption: "Worker busy" rejections now set __busy__
  sentinel instead of clearing currentTaskId, preventing infinite
  retry loops (500+ failed tasks)
- Add dispatch concurrency guard to prevent race conditions
- Add dynamic worker auto-scaling when all workers are busy (throttled
  to every 10s, respects MAX_WORKERS)
- Allow Iconify CDN in CSP for UI-Kit icon loading
- Continue Nuxt 4 UI migration (settings components, dark theme fixes)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

review.bot

2026-03-02 17:28:11 +00:00

added the
priority
medium

status
ready

type
enhancement
labels
requested review from review.bot

review.bot reviewed

2026-03-02 17:28:57 +00:00

review.bot left a comment

Owner

AI Code Review (Devstral)

Fixes busy-loop bug and adds dynamic worker auto-scaling with CSP fix

Automated review by pr-reviewer

## AI Code Review (Devstral) Fixes busy-loop bug and adds dynamic worker auto-scaling with CSP fix --- *Automated review by [pr-reviewer](https://github.com/customable/pr-reviewer)*

review.bot added

and removed

labels

2026-03-02 17:28:57 +00:00