Function validate_constraints_against_geometry 

fn validate_constraints_against_geometry(
    constraints: &[Constraint],
    geometry: &Geometry,
) -> Result<(), ParseError>

Validates parsed constraints against the molecular geometry.

This function performs comprehensive validation of constraints including:

• Atom index bounds checking
• Duplicate constraint detection
• Geometric feasibility checks
• Target value reasonableness

Arguments

• constraints - List of parsed constraints to validate
• geometry - Molecular geometry to validate against

Returns

Ok(()) if all constraints are valid, Err(ParseError) with detailed error information otherwise.