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v6.3.0

sampotts/plyrv6.3.0Aug 12, 2026by obra

AI Summary

This release focuses on enhancing AI agent development workflows, introducing support for Devin CLI and Hermes Agent, improving conflict resolution in subagents, and safer git worktree management.

Key Highlights

  • Devin CLI and Hermes Agent support added with skills auto-triggering
  • Controllers no longer stall on plan conflicts, only destructive actions require human approval
  • Git worktree removal no longer destroys untracked files, asking for confirmation instead
  • Windows compatibility fixes for scripts like `render-graphs.js` and `bump-version.sh`

New Features

  • Event-driven subagent waits instead of poll-heavy
  • Batch dispatch for small same-shape tasks to reduce cost
  • Plans carry a `Spec:` pointer for conflict resolution
  • Conflict scan checks recorded in the ledger

Full Release Notes


### Harness Support

- **Devin CLI**: `devin plugins install obra/superpowers` now works, and skills auto-trigger at session start. (#1995)
- **Hermes Agent**: install from a git clone; skills register with Hermes' native loader and the bootstrap loads on the first turn. (#1922, #2025)
- **Grok Build CLI** added to the install docs. (#1919)

### Brainstorming

- **Ceremony now scales to the task.** Requests are classified as spike, bounded, or architectural; small tasks skip the two-document ritual. Every path still stops for your approval before implementation. (#2063)

### Subagent-Driven Development

- **Controllers no longer stall on plan conflicts.** Non-catastrophic conflicts and ambiguities get a recorded ruling and work continues; only destructive or irreversible actions still stop for a human. One donated session had sat blocked for almost nine hours on a question the controller could have decided. (#2077)
- **The pre-dispatch conflict scan records its checks in the ledger** instead of just asserting the plan is clean. (#2080)
- **Small same-shape tasks batch into one dispatch**, cutting subagent cost sharply on micro-task plans; batch reviews verify every file in the brief made it into the diff. (#2078)
- **Implementers and reviewers may not spawn their own subagents**, which was producing duplicate reviews. (#2059)
- **Plans carry a `Spec:` pointer** and SDD reads the spec at setup, so plan conflicts get resolved against the design instead of guessed at. (#2086)
- Reviewers re-read evidence they find illegible instead of re-running the test suite (#2089), and circuit-breaker rulings now show up in the Finish report.

### Codex

- Subagent waits are event-driven instead of poll-heavy, spawns pin model and reasoning effort explicitly, and the multi-agent reference is corrected against Codex source. (#2060, #2061, #2062)

### Finishing a Development Branch

- **Worktree removal no longer destroys untracked files.** When `git worktree remove` refuses because the tree holds uncommitted work, the skill stops, names the files, and asks — instead of reaching for `--force`. (#2016, #1223, #2024)

### Fixes

- `render-graphs.js` in writing-skills works on Windows.
- Corrected Copilot CLI backgrounding guidance for Windows. (#1929, #2006)
- `bump-version.sh` covers the Hermes manifest.

### Documentation

- README: added a table of contents and reorganized Getting Started.