OpenSpec Plus Tasks

Mission

Enrich OpenSpec's tasks.md generation with vertical-slice discipline and subagent review. Format is owned by the schema template (resolved in Phase 0) — this skill provides thinking discipline before the file is written and a subagent review after.

Two anchors that shape every task group:

1. Each task group = a vertical slice — end-to-end through whatever layers are needed, not horizontal layer-by-layer
2. Each task group completion = a testable outcome — after the last task in a group is checked, the user can verify something works

This skill is RIGID. NEVER write tasks.md before completing Phase 1 vertical-slice discovery. NEVER skip the subagent review. Reading source code, writing implementation code, running TDD, including exact commit messages, or restructuring the template format is a skill violation.

Red flags — STOP, you are about to violate this skill: