Module pattern 

Pattern Matching with Variable Binding (P3 Feature - Advanced)

This module implements Drools-style pattern matching with:

• Variable binding ($var)
• Multi-object patterns
• Join conditions between patterns
• Field constraints with variables

Structs

MultiPattern

Multi-pattern rule with joins

Pattern

A pattern matches facts of a specific type with constraints

PatternBuilder

Pattern builder for easier construction (Drools-style DSL)

Enums

PatternConstraint

Pattern constraint with optional variable binding

Type Aliases

Variable

Variable name (e.g., “$name”, “$age”)