`find` and `grep` commands fail (`unexpected argument '-n' found`)

[MaciekBaron]

Currently find and grep commands fail when used by Claude or executed using rtk directly.

grep seems to be addressed by #135 however I don't see anything for find.

Problem

The following command:

rtk find . -name test

returns

error: unexpected argument '-n' found

  tip: to pass '-n' as a value, use '-- -n'

Usage: rtk find [OPTIONS] <PATTERN> [PATH]

For more information, try '--help'.

Likewise, the following command:

rtk grep -n test CLAUDE.md

returns

error: unexpected argument '-n' found

  tip: to pass '-n' as a value, use '-- -n'

Usage: rtk grep [OPTIONS] <PATTERN> [PATH] [EXTRA_ARGS]...

For more information, try '--help'.

Expected behaviour

I expect the commands to work exactly the same way as they would without prefixing them with rtk.

Technical analysis

Other commands which include -n, such as rtk git log -n 1, work without any issues.

[sahilmgandhi]

Created #211 to address the find errors