What problem does it solve? Coding agents often drift mid-task, skip validation, or produce unreviewed commits. This Skill provides a structured execution loop that takes a task from understanding through implementation, validation, atomic commits, and pre-PR preflight checks. ## Core Features & Use Cases - Structured execution pipeline: Understand the task, plan in vertical slices, implement with red/green/refactor TDD for backend code, and validate using auto-detected project feedback loops (npm, composer, make, pytest). - Commit and ship workflow: Commits via the atomic-commits skill and runs the pr-preflight skill before pushing and opening a PR in Ship mode. - Context handoff: When context usage exceeds 40% or a phase ends, persists the remaining plan to working/active/ so a fresh session can resume. - Use Case: Given a GitHub issue to implement, the agent reads the issue, writes one failing test at a time, runs the project's test and lint scripts, commits atomically, and opens a reviewed PR. ## Quick Start Ask the agent to do work on the current GitHub issue and follow the implement, validate, and commit loop until a PR is opened.