Summary

• move provisioning and publication execution from scheduled draining to versioned Cloudflare Queue wake-ups backed by canonical D1 state
• enforce exact operation/publication identities, generation and lifecycle fencing, site-lane concurrency, persisted fairness, and global/per-principal backpressure
• persist producer repair, delayed retries, processing ownership, terminal dead-letter evidence, and operator recovery commands
• retain bounded scheduled WordPress due-event processing while keeping normal provisioning and publication Queue-only
• expose x-wp-codebox-dispatch: queued|backpressured and cancel queued work during allocation deletion

Verification

• npm run build
• npm run test:cloudflare-runtime
• npm run test:cloudflare-queue
• npm run cloudflare:dry-run:d1 (23,319.62 KiB raw / 8,376.32 KiB gzip; DO, Queue, D1, R2)
• npm run cloudflare:dry-run:public-reader (468.68 KiB raw / 115.52 KiB gzip; R2 only)
• git diff --check origin/main...HEAD

AI Assistance

Substantive implementation and review assistance was provided through OpenCode using OpenAI gpt-5.6-sol, with an earlier Homeboy Cook candidate drafted using OpenAI gpt-5.6-terra. The agent was used to inspect the runtime contracts, implement queue and D1 state transitions, add behavioral tests, and review concurrency and retry semantics. Chris Huber reviewed and remains responsible for the change.

Closes #2083