Fastapi new worktree

Create a new git worktree for the task the user described.

1. Read CLAUDE.md to understand the project structure and branching conventions.
2. Create a short, descriptive branch name based on the task (e.g. fix/login-redirect, feat/add-search).
3. Take the current repository's folder name (you already know the working directory — don't compute it with a shell substitution like $(basename $PWD), which isn't portable to Windows shells), then run git worktree add ../<repo-folder>-<branch-name> -b <branch-name> master to create the worktree from the configured base branch (the trailing start-point keeps the new branch from inheriting whatever branch the user is currently checked out on).
4. Confirm the worktree was created successfully with git worktree list.
5. Tell the user the full path to the new worktree so they can open it.

Rules:

• Always branch from master unless told otherwise.
• Use lowercase kebab-case for branch names.
• Prefix with fix/, feat/, chore/, docs/, or refactor/ as appropriate.
• Do not start work in the worktree — just create it and report the path.

When NOT to use

• The user just wants a new branch in the current working tree (git checkout -b) — worktrees are for parallel checkouts, not branch creation alone.
• A worktree for the same branch already exists — surface the existing path; don't create a duplicate.
• The user is on a non-worktree-friendly hosting setup (some submodule-heavy repos break with worktrees) — flag the risk before creating.