v0.4.0

This release has breaking changes (trial names must be unique; new platform, filesystem and file-lock requirements for the coordination database). See CHANGELOG.md before upgrading.

What's Changed

• Run trials on dedicated threads and publish the coordination DB atomically by @bindreams in #64
• Lint shell and workflow files by @bindreams in #62
• Publish via trusted publishing by @bindreams in #61
• Make release publishing idempotent: skip already-published members on re-dispatch by @bindreams in #68
• fix(coordination): replace busy_timeout-based caps with uncapped retry by @bindreams in #74
• test(coordination): replace Barrier with a panic-safe rendezvous by @bindreams in #75
• Release 0.4.0 by @bindreams in #79
• ci(release): wait for the new draft to appear in the releases list before counting duplicates by @bindreams in #80

Full Changelog: v0.3.1...v0.4.0