// Package ucca provides the Use Case Compliance Assessment engine.
// policy_engine.go is split into:
//   - policy_engine_types.go   — YAML struct types
//   - policy_engine_loader.go  — constructor, file loading, accessor methods
//   - policy_engine_eval.go    — rule evaluation logic
//   - policy_engine_gen.go     — summary/recommendation generation + helpers
package ucca