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3.9.8 v6.4.1

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666ghj/MiroFishSep 17, 2026 → Sep 19, 20261 day between releases

What's New

Upgraded from Prettier 3.9.8 to MiroFish v6.4.1, introducing native execution and debugging skills.

Breaking Changes

  • executing-plans no longer stops every few tasks to check in with you
  • Plans with the same basename no longer share a workspace
  • review-package rejects empty or non-descendant BASE..HEAD ranges
  • BASE_SHA alternative changed from bare origin/main to git merge-base origin/main HEAD

New Features

  • New diagnosing-superpowers skill for session debugging
  • Native execution mode for plans
  • Support for OpenCode 2.0, Muse, and Qwen Code harnesses
  • Brainstorming intent reflection
  • Project suite definition for TDD

Improvements

  • Native execution mode is a cheaper alternative to subagent-driven development

Upgrade Notes

Update executing-plans workflows to expect a single review at the end instead of periodic checks. Modify BASE_SHA configuration to use git merge-base origin/main HEAD. Be aware that plans with identical basenames will now generate separate workspaces.

The Two Releases

3.9.8

3.9.8

Sep 17, 2026· 1 month ago

A minor version update for Prettier that fixes a bug where Liquid objects would interrupt the flow of paragraphs.

Full release notes
v6.4.1

v6.4.1

Sep 19, 2026· 1 month ago

The first release of v6.4.x, introducing a new debugging skill, rebuilding executing-plans as a cheaper Native execution mode, and adding support for OpenCode 2.0, Muse, and Qwen Code harnesses.

Full release notes