From 42e5395066485884d0f9b5c405eedf41dc8a99f1 Mon Sep 17 00:00:00 2001
From: agent-db0ec53c058f1326 <agent-db0ec53c058f1326@gridmolt.local>
Date: Fri, 17 Apr 2026 01:01:30 +0200
Subject: [PATCH] build(agent): molt-z#db0ec5 iteration

---
 nova_plan/contracts.py     |  3 ++
 nova_plan/energi_bridge.py | 60 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 63 insertions(+)
 create mode 100644 nova_plan/energi_bridge.py

diff --git a/nova_plan/contracts.py b/nova_plan/contracts.py
index 97e4a91..6f5f296 100644
--- a/nova_plan/contracts.py
+++ b/nova_plan/contracts.py
@@ -19,6 +19,9 @@ class PlanDelta:
     # Optional fields to support CRDT-like, partition-tolerant merges
     parent_version: int | None = None
     sequence: int | None = None
+    # Optional contract and signature fields to support Contract-as-Code (CaC)
+    contract_id: str | None = None
+    signature: str | None = None
 
     def to_json(self) -> str:
         return json.dumps(asdict(self))
diff --git a/nova_plan/energi_bridge.py b/nova_plan/energi_bridge.py
new file mode 100644
index 0000000..7b26935
--- /dev/null
+++ b/nova_plan/energi_bridge.py
@@ -0,0 +1,60 @@
+"""EnergiBridge: a minimal, production-friendly bridge for NovaPlan interoperability.
+
+This module provides a small, production-oriented scaffold that maps NovaPlan
+primitives to a CatOpt-like canonical representation and exposes a simple
+Contract-as-Code (CaC) workflow for interoperability across adapters.
+
+- to_object(local_problem) and to_morphism(plan_delta) reuse the existing
+  catoptBridge logic already in nova_plan.catopt_bridge.
+- EnergiBridge.register_contract(contract_id, content, key) signs and stores a
+  contract artifact in the in-repo CaC registry, enabling provenance for adapters.
+
+The implementation is intentionally small and non-breaking so existing tests
+continue to pass. It serves as a deliberate MVP wiring point for future
+feature growth.
+"""
+
+from __future__ import annotations
+
+from typing import Any, Dict
+
+from nova_plan.catopt_bridge import to_object, delta_to_morphism
+from nova_plan.contracts import PlanDelta, CaCContract, CaCRegistry, sign_ca_contract
+
+
+class EnergiBridge:
+    """Canonical EnergiBridge facade for cross-domain interoperability.
+
+    Provides helpers to map core primitives to canonical representations and
+    to publish a signed contract artifact for governance and replay-safe
+    interoperability.
+    """
+
+    def __init__(self, signer_key: str | None = None) -> None:
+        self.signer_key = signer_key
+
+    # Canonical mapping helpers (thin wrappers around existing bridge logic)
+    def to_object(self, local_problem) -> object:
+        """Convert a LocalProblem to a canonical ObjectI via existing bridge."""
+        return to_object(local_problem)
+
+    def to_morphism(self, plan_delta: PlanDelta, contract_id: str = "default") -> object:
+        """Convert a PlanDelta to a canonical Morphism, with optional contract_id."""
+        return delta_to_morphism(plan_delta, contract_id=contract_id)
+
+    # CaC publishing interface
+    def register_contract(self, contract_id: str, content: Dict[str, Any], key: str) -> CaCContract:
+        """Sign and register a contract artifact in the CaC registry.
+
+        - contract_id: unique id for the contract artifact
+        - content: the contract content payload (big or small, domain-specific)
+        - key: signing key (private material); used to derive a signature deterministically
+        Returns the signed CaCContract object and registers it in CaCRegistry.
+        """
+        contract = CaCContract(contract_id=contract_id, version=1, content=content)
+        signed = sign_ca_contract(contract, key)
+        CaCRegistry.register(signed)
+        return signed
+
+
+__all__ = ["EnergiBridge"]