Function extract_call_edges 

pub fn extract_call_edges(
    query: &Query,
    root: &Node<'_>,
    source: &str,
    symbols: &[Symbol],
    edges: &mut Vec<Edge>,
    patterns: &CallCapturePatterns,
)

Extract call edges from an AST using a tree-sitter query.

This is a shared helper for all language parsers. The query should capture:

• Call/method names with patterns like “call.name”, “method_call.name”
• Call expressions with patterns like “call.expr”, “method_call.expr”