Function parse_squash_merge_format

atomic-cli/src/commands/git/parallel.rs:3670–3699

Detect squash merge format from various Git forges. Supported formats: - GitHub: `title (#42)\n\n* commit msg 1\n* commit msg 2` - GitLab: `title\n\nSee merge request group/project!42` - Azure DevOps: `Merged PR 42: title\n\n...`

(message: &str)

/// - GitLab:  `title\n\nSee merge request group/project!42`
/// - Azure DevOps: `Merged PR 42: title\n\n...`
fn parse_squash_merge_format(message: &str) -> Option<u32> {
    let lines: Vec<&str> = message.lines().collect();
    if lines.len() < 2 {
        return None;
    }

    // GitHub: first line has (#N), followed by blank line + bullet points
    if let Some(pr) = parse_pr_number(lines[0]) {
        if lines.len() >= 3 {
            let has_bullets = lines[2..].iter().any(|l| l.trim().starts_with("* "));
            if has_bullets {
                return Some(pr);
            }
        }
    }

    // GitLab: body contains "See merge request ...!N"
    for line in &lines[1..] {
        if line.contains("See merge request") {
            return parse_pr_number(line);
        }
    }

    // Azure DevOps: "Merged PR N: title"
    if lines[0].starts_with("Merged PR ") {
        return parse_pr_number(lines[0]);
    }

    None
}

// ═══════════════════════════════════════════════════════════════════════
// Free Functions for Parallel Parsing