Function intersects 

pub fn intersects(
    lhs: &PathPattern,
    rhs: &PathPattern,
) -> Result<bool, GlobIntersectError>

Does the matched set of lhs overlap that of rhs?

The check is sound (no false positives, no false negatives) across the three pattern-pair shapes:

• literal/literal: byte-equal comparison of the canonical forms.
• literal/glob: the literal is tested against the compiled glob matcher.
• glob/glob: a product-DFA emptiness check via [super::glob_intersect].

Both patterns are assumed to be in the same coordinate system (typically canonicalised workspace-absolute).

Errors

Returns [GlobIntersectError] only for the glob/glob arm, when the underlying DFA construction or anchored-start lookup fails. The literal arms are infallible.