[FEATURE] Add support for multiple account profiles with easy switching

Preflight Checklist

• [x] I have searched existing requests and this feature hasn't been requested yet
• [x] This is a single feature request (not multiple features)

Problem Statement

Currently there's no way to quickly toggle between different Anthropic accounts (e.g., personal and work).

Add support for multiple account profiles with easy switching.

Proposed Solution

It would be helpful to have named profiles (claude --profile work) or an interactive account switcher.

Alternative Solutions

_No response_

Priority

Low - Nice to have

Feature Category

Configuration and settings

Use Case Example

_No response_

Additional Context

_No response_