research-plan-implement v2.0.0

v2.0.0 — Skills-format rewrite

A ground-up rewrite of the workflow inspired by patterns from Dex at HumanLayer (CRISPY), Simon Willison's writing on agent context engineering, and lessons learned shipping AI-assisted work in the federal government and in B2B SaaS. The core idea: manage agent context deliberately at every phase — research, design, plan, implement, review — so that long-running work stays focused and auditable instead of drifting.

New skills

• /design — lightweight human-agent alignment before planning. Catches ambiguity early, when it's cheap to fix.
• /review-changes — structured, guided code review that treats review as a first-class phase, not an afterthought.
• /guide — contextual workflow orientation with backtick injection for instant workspace state. Consolidates the former /guide and /workflow-guide into a single entry point.

Planning and implementation upgrades

• Vertical phase planning in create-plan — each phase ships a thin, testable slice end-to-end rather than stacking horizontal layers that can't be validated in isolation.
• Per-phase testing baked into both planning and implementation, so every phase has a clear "done" signal.
• query-planner agent for objective research decomposition.
• Pattern-finder now discovers existing testing infrastructure so plans align with how the codebase actually tests things.
• Testing-aware implementation and review metadata in implement-plan.

Setup and migration

• Upgrade intelligence — the setup skill detects existing installs and migrates from the old commands format to skills.
• Setup now recommends creating a branch before running.

Under the hood

• Migrated create-plan, iterate-plan, and implement-plan from the commands format to the skills format.
• Output templates extracted into dedicated supporting files for easier iteration.
• Research and plan steps now use the AskUserQuestion tool for open questions.
• Old reference/commands directory removed (migrated to reference/skills).
• README and workflow docs rewritten around the new 5-step flow.

How to update

```
/plugin marketplace update research-plan-implement-workflow
/plugin
```
Then: Manage → select plugin → Update.