Aider lint command breaks when using nested string with spaces

[aweis89]

Issue

The lint command has different command processing logic then other commands (e.x. the test command) which doesn't allow for spaced string processing. For example the following command isn't parsed correctly:

$ aider --lint --lint-cmd '/bin/sh -c "echo failed && exit 0"'

Aider v0.70.1.dev33+g904b9315
Model: deepseek/deepseek-chat with diff edit format, infinite output
Git repo: .git with 425 files
Repo-map: using 1024 tokens, files refresh
# Fix any errors below, if possible.

## Running: /bin/sh -c "echo failed && exit 0" aider/linter.py

failed: -c: line 0: unexpected EOF while looking for matching `"'
failed: -c: line 1: syntax error: unexpected end of file

## See relevant line below marked with █.

aider/linter.py:

Version and model info

No response