[FEATURE] Add project name argument to init command: `claude init <project-name>`

Feature Request

Description

Add support for an optional project name argument to the init command, similar to how npm init <project-name> or cargo new <project-name> work.

Proposed Usage

claude init my-project

This would:

1. Create a new directory called my-project/
2. Change into that directory
3. Run the standard init workflow (create CLAUDE.md, etc.)

Current Behavior

Currently, claude must be run from an existing directory. Users who want to start a new project must manually:

1. mkdir my-project
2. cd my-project
3. claude (and then use /init)

Proposed Behavior

claude init my-project
# Creates my-project/ directory
# Initializes Claude Code context
# Optionally starts interactive session in new directory

Additional Options (Optional Enhancements)

• claude init my-project --template <template> - Start with a predefined template
• claude init my-project --no-interactive - Just create the structure without starting a session

Use Case

This streamlines the workflow for developers starting new projects with Claude Code, matching the ergonomics of other CLI tools like:

• npm init <project-name>
• cargo new <project-name>
• go mod init <project-name>
• poetry new <project-name>

Workaround

A plugin-based /new-project command can provide this functionality as a workaround (PR forthcoming).