[FEATURE] Bash completion for Claude Code tool

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

Claude Code doesn't install bash completion for the claude tool.

Proposed Solution

When claude is installed, bash completion script for claude is installed in the system. So when typing, for example, claude --he and clicking Tab, it should complete to claude --help.

Alternative Solutions

_No response_

Priority

Medium - Would be very helpful

Feature Category

CLI commands and flags

Use Case Example

_No response_

Additional Context

_No response_