Create a git worktree shortcut, copies .env, copies claude settings.local.json.example

git-worktree.sh

# Create a git worktree as a sibling directory for parallel Claude Code sessions.
# Usage: worktree <branch-name> [base-branch]
# Examples:
#   worktree feat/login          # creates worktree from current branch
#   worktree fix/bug-123 main    # creates worktree branching off main
worktree() {
    local branch="$1"
    local base="$2"

    if [[ -z "$branch" ]]; then
        echo "Usage: worktree <branch-name> [base-branch]"
        echo "       worktree --list"
        echo "       worktree --rm <path>"
        return 1
    fi

    if [[ "$branch" == "--list" ]]; then
        git worktree list
        return 0
    fi

    if [[ "$branch" == "--rm" ]]; then
        if [[ -z "$base" ]]; then
            echo "Usage: worktree --rm <path>"
            return 1
        fi
        git worktree remove "$base"
        return $?
    fi

    local repo_root
    repo_root=$(git rev-parse --show-toplevel 2>/dev/null)
    if [[ -z "$repo_root" ]]; then
        echo "Error: not inside a git repository."
        return 1
    fi

    local repo_name
    repo_name=$(basename "$repo_root")

    # Turn branch name into a safe directory suffix: feat/login -> feat-login
    local dir_suffix
    dir_suffix=$(echo "$branch" | tr '/' '-')

    local worktree_path
    worktree_path="$(dirname "$repo_root")/${repo_name}-${dir_suffix}"

    if [[ -d "$worktree_path" ]]; then
        echo "Error: directory already exists: $worktree_path"
        return 1
    fi

    # Check if branch already exists
    if git show-ref --verify --quiet "refs/heads/$branch"; then
        git worktree add "$worktree_path" "$branch"
    else
        # Create new branch, optionally from a base
        if [[ -n "$base" ]]; then
            git worktree add -b "$branch" "$worktree_path" "$base"
        else
            git worktree add -b "$branch" "$worktree_path"
        fi
    fi

    if [[ $? -ne 0 ]]; then
        return 1
    fi

    # Copy .env if it exists
    if [[ -f "$repo_root/.env" ]]; then
        cp "$repo_root/.env" "$worktree_path/.env"
        echo "Copied .env to worktree."
    fi

    # Copy Claude Code local settings if example exists
    if [[ -f "$repo_root/.claude/settings.local.json.example" ]]; then
        mkdir -p "$worktree_path/.claude"
        cp "$repo_root/.claude/settings.local.json.example" "$worktree_path/.claude/settings.local.json"
        echo "Copied .claude/settings.local.json from example."
    fi

    echo ""
    echo "Worktree ready: $worktree_path"
    echo "Run:  cd $worktree_path && mise trust && pnpm install"
}