bug(transcript): copying a wrapped command from the transcript inserts hard line breaks, so the pasted command breaks #3210

Before submitting

• I searched open and closed issues and did not find a report of this problem.
• I reviewed this report and removed credentials, tokens, private paths, hostnames, and other sensitive data.

Problem

When the assistant gives a long single-line command in a fenced code block, the transcript wraps it at the terminal width. Selecting and copying it from the screen copies the wrap points as real newlines, so pasting into a shell splits one command into several lines and it fails or behaves differently. It happened in 4 of 4 attempts in one session, with bash and PowerShell commands. In one case the command "succeeded" but wrote a broken file: a comment line was split and its second half was left without # in an env template file.

Steps to reproduce

1. Ask the agent for a single-line command longer than the terminal width, inside a fenced code block (for example a PowerShell Add-Content -Value "...long string...").
2. Select the command on screen with the mouse and copy it.
3. Paste it into PowerShell 7.
4. The shell shows >> continuation prompts at each visual wrap point, and the command splits there.

Expected and actual behavior

Expected: the copied text matches the logical line in the code block; soft wraps are not copied as newlines.
Actual: every visual wrap becomes a hard newline in the clipboard. Example: # Tango SQL adapter (ERP_ADAPTER=tango_sql). and Read-only login; ... arrived as two separate lines.

gentle-pi version

4.7.0

Pi version

1.5.1

Operating system

Windows

Relevant logs or error output (optional)

PS <project>> for f in <file-a> <file-b>; do printf '\n# Tango SQL adapter (ERP_ADAPTER=tango_sql).
>>  Read-only login; the password goes to the secret store.\nTANGO_SQL_HOST=...
ParserError: Missing opening '(' after keyword 'for'.

Terminal: Orca's integrated terminal on Windows 11, PowerShell 7. Not yet checked in Windows Terminal, so the terminal's own selection handling cannot be excluded. Related: #2578 (copy a block as plain text), which would give a workaround.