<domain_overview>

🌳 GIT WORKTREES: ISOLATED WORKSPACES

Philosophy: Isolation prevents contamination. Work on features without affecting the main workspace. Systematic directory selection + safety verification = reliable isolation. ISOLATION INTEGRITY MANDATE (CRITICAL): Never create worktrees in directories that are not explicitly ignored by Git. AI-generated workflows often fail by polluting the primary repository with tracked worktree data. You MUST verify that the destination directory is within .gitignore before execution. Furthermore, you MUST ensure a 'Clean Baseline' by running tests before starting any feature work in a new worktree to avoid cross-contamination of artifacts. </domain_overview>

<directory_selection>

🎯 OVERVIEW

Git worktrees create isolated workspaces sharing the same repository, allowing work on multiple branches simultaneously without switching. Benefits:

• Work on feature branch without stashing changes
• Test in isolation without affecting main workspace
• Run long processes without blocking other work
• Easy cleanup when feature is complete

📋 WHEN TO USE

Use before:

• Starting new feature development
• Implementing plans from @planning-mastery