Prompt mode `-p` doesn't respect allowed directories

### Describe the bug

When using `copilot` with the `-p` option, the current directory isn't checked against the allowed directories.

This seems like a big problem because one accidental invocation in the wrong place (like `$HOME`) potentially exposes a lot of private information with no confirmation to allow one to realize the mistake.

### Affected version

0.0.365 Commit: 76d0881

### Steps to reproduce the behavior

1. Create a test directory where Copilot doesn't have access to it or any parents already.
`mkdir test`
2. Change the current directory to the test directory.
`cd test`
3. Make a test file with potentially private content.
`echo "Private data!" > data.txt`
4. Check if Copilot can read the content.
`copilot -p "What are the files and their contents in the current directory?"`

### Expected behavior

Copilot should error in some way since the current directory was never approved for access.

### Additional context

As an aside, my output of the above command shows a misleading number of files found and lines read. Not sure what that's about.