Function check_required_tools 

pub fn check_required_tools() -> Result<()>

Check that required PostgreSQL client tools are available

Verifies that the following tools are installed and in PATH:

• pg_dump - For dumping database schema and data
• pg_dumpall - For dumping global objects (roles, tablespaces)
• psql - For restoring databases

Returns

Returns Ok(()) if all required tools are found.

Errors

Returns an error with installation instructions if any tools are missing.

Examples

// Check if PostgreSQL tools are installed
check_required_tools()?;