Function extract_major_component 

pub fn extract_major_component(version: &str) -> Option<u64>

What: Extract the leading numeric component from a version string.

Inputs:

• version: Version string to parse (e.g., “1.2.3”, “2.0.0-alpha”).

Output:

• Returns Some(u64) for the first numeric segment.
• Returns None when the first segment cannot be parsed as a number.

Details:

• Splits version on . and -, treating the first token as the major component.
• Used by is_major_version_bump() to extract major version numbers.

Example

use arch_toolkit::deps::extract_major_component;

assert_eq!(extract_major_component("1.2.3"), Some(1));
assert_eq!(extract_major_component("2.0.0-alpha"), Some(2));
assert_eq!(extract_major_component("10.5.2"), Some(10));
assert_eq!(extract_major_component("alpha"), None);