Code blocks copy with leading spaces, breaking paste into terminals

Description

When copying code blocks from Claude Code's terminal output, leading spaces are included in the copied text. This causes issues when pasting into shells or REPLs (e.g., Python's IndentationError: unexpected indent).

Steps to reproduce

1. Ask Claude Code to output a multi-line code block (e.g., Python snippet)
2. Select and copy the code block from the terminal output
3. Paste into a terminal or Python REPL

Expected behavior

Code should copy without leading whitespace so it can be pasted directly into a terminal.

Actual behavior

Each line has leading spaces added, which breaks Python code and shell commands.

Screenshot

The code block renders with visible indentation that gets included in the clipboard:

 from demoserver.api.s3 import S3Manager
 from django.conf import settings
 s3 = S3Manager()

Pasting this into a Python shell gives IndentationError: unexpected indent.

Environment

• macOS (Darwin 25.3.0)
• Claude Code CLI