What problem does it solve? Developers waste minutes per task running full test suites, lint, and builds on every small change when targeted verification would suffice. This Skill replaces the floor-on-every-change pattern with a 7-step loop that runs the right verification at the right time. ## Core Features & Use Cases - 7-Step Lean Loop: Read, implement, run targeted T1 test, typecheck, commit specific files, push, and open a PR without redundant local CI reproduction. - Test Tier Selection: Choose between T1 targeted vitest (~2s), T2 domain tests (~5s), or T3 floor (~3min) based on the shape of the change. - Worktree Management: Bootstrap, audit, and clean isolated git worktrees per Linear issue using wt-new, wt-audit, and wt-clean scripts. - Use Case: When starting Linear issue SAN-500 for an event filter UI change, create a worktree, edit the component, run only its test file plus tsc --noEmit, commit, and let CI handle lint, build, and the full suite. ## Quick Start Ask the AI to start implementing Linear issue SAN-500 using the lean loop with the appropriate test tier for the files being changed.
