Using Git Worktrees (Grade A)Security-tested data-ai skill for Claude AI. Grade A. Use when starting feature work that needs isolation from current workspace or before executing implementation plans - creates isolated git worktre

Use when starting feature work that needs isolation from current workspace or before executing implementation plans. This skill creates isolated git worktrees with smart directory selection and safety verification. Git worktrees create isolated workspaces sharing the same repository, allowing work on multiple branches simultaneously without switching. The core principle is systematic directory selection plus safety verification, leading to reliable isolation. The directory selection process follows these steps: 1. Check for existing directories with priority order: hidden ".worktrees" directory, then "worktrees" directory. If found, use that one. 2. Check if a preference for a worktree directory is specified in the "CLAUDE.md" file. 3. If no directory exists and no CLAUDE.md preference is found, ask the user to choose a directory. The safety verification step is critical and involves checking if the chosen directory is ignored by Git. If not ignored, the skill will add the directory to the ".gitignore" file and commit the changes. Creation steps include: 1. Detecting the project name and creating a full path for the worktree. 2. Creating the worktree with a new branch. 3. Running project setup, which auto-detects and runs the appropriate setup commands (e.g., installing dependencies) based on the project type (Node.js, Rust, Python, or Go). 4. Verifying a clean baseline by running tests. If tests fail, report failures and ask whether to proceed or investigate. 5. Reporting the worktree location and its readiness to implement a feature.