Filesystem and Network Configuration

What changed: Filesystem and network restriction configuration now uses dedicated getter functions with clearer interfaces.

Details:

• Ij6() retrieves filesystem read configuration
• Gj6() retrieves filesystem write configuration
• Zj6() retrieves network restriction configuration
• P$Q() checks if local binding is allowed
• L$Q() retrieves ripgrep-specific configuration
• y$Q(), k$Q(), _$Q(), x$Q() get HTTP/SOCKS proxy ports and socket paths
• Evidence: Ij6(), Gj6(), Zj6(), P$Q(), L$Q() functions for configuration access