[Bug]: Doesn't create .gitignore

[ghz-max]

Bug Description

When running "grepai init" I'd expect the tool to add a ".grepai/" entry to the .gitignore file is the cwd is a git repo.

At the moment, grepai only add the ".grepai" entry if a ".gitignore" file exists

Steps to Reproduce

1. be in a git versioned folder/project
2. ensure .gitignore doesn't exist (rename it or delete it)
3. run grepai init

Expected Behavior

.gitignore file created with ".grepai/" entry

Actual Behavior

no .gitignore file created, no ".grepai/" entry added anywhere

grepai Version

0.34.0

Operating System

Linux

Embedding Provider

Not applicable

Relevant Logs

Configuration

Checklist

• I have searched existing issues to avoid duplicates
• I am using the latest version of grepai