Function resolve 

pub fn resolve<'a>(
    query: &str,
    catalog: &'a [ToolSpec],
    max_results: usize,
) -> Vec<&'a ToolSpec>

Resolve a query against the catalog, returning matching ToolSpecs.

Supports:

• select:A,B,C — exact name lookup, preserves order, skips unknowns
• exact name — single exact match
• keyword terms — scored substring search across name + description