Merge PR #152 after Code Queue rebase and validation. This lands the DEV Cloud Web publish/apply contract, dist freshness checks, artifact identity evidence, and read-only rollout observation. No PROD changes and no live deploy claim.
Refs #66. Merged by commander after reviewing Code Queue task codex_1779422778882_1. Separates process HTTP, Docker daemon push, and k3s pull registry capabilities so runner loopback HTTP degradation does not block artifact publish when Docker/k3s paths are proven.