tandem

Execute an approved implementation plan task by task — verify each step fresh, stop when blocked, and ask instead of guessing.

You MUST use this before any implementation. Clarify intent, shape the design, and get approval before touching code.

Create an implementation plan for an approved design with exact file paths, ordered tasks, concrete verification, and no placeholders.

Verify implementation against the plan, update living documentation, and close out the change.

Systematic debugging protocol — find the root cause before proposing fixes.

Check for available upgrades to the pi coding agent framework by comparing the current `@earendil-works/pi-*` or legacy `@mariozechner/pi-*` version in package.json against releases on `earendil-works/pi`. Use this skill whenever the user asks to upgrade pi, update pi, check pi changelogs/releases, or migrate off the deprecated `@mariozechner/*` packages.