fix: Move browser cache to user directory (#44)

## Summary

This PR fixes the browser cache location to be downloaded in the
`/home/agent` directory instead of the previous location.

## Changes

- Updated browser cache download location to `/home/agent` directory
- Ensures proper file permissions and accessibility for the agent user

## Testing

- [ ] Browser cache downloads successfully to the new location
- [ ] Agent can access and use the downloaded cache files
- [ ] No regression in existing browser automation functionality

Signed-off-by: Eden Reich <eden.reich@gmail.com>

Author: edenreich