diff --git a/src/idea15_edgemind_verifiable_onboard/energi_bridge.py b/src/idea15_edgemind_verifiable_onboard/energi_bridge.py
index 02b5ca3..3346aba 100644
--- a/src/idea15_edgemind_verifiable_onboard/energi_bridge.py
+++ b/src/idea15_edgemind_verifiable_onboard/energi_bridge.py
@@ -82,6 +82,39 @@ class EnergiBridge:
     def get_adapter(self, name: str) -> AdapterContract | None:
         return self.adapters.get(name)
 
+    def map_audit_log(self, log: AuditLog) -> Dict[str, Any]:
+        """Map AuditLog to a canonical representation.
+
+        Provides tamper-evident-ish governance trail in a simple canonical form.
+        """
+        return {
+            "canonical": "AuditLog",
+            "entries": list(log.entries),
+        }
+
+    def export_envelope(
+        self,
+        lp: LocalProblem | None = None,
+        delta: PlanDelta | None = None,
+        signals: SharedSignals | None = None,
+        log: AuditLog | None = None,
+    ) -> Dict[str, Any]:
+        """Export a combined canonical envelope of provided pieces.
+
+        This enables cross-adapter interoperability by bundling multiple
+        canonical representations into a single exchange payload.
+        """
+        payload: Dict[str, Any] = {"canonical": "Envelope"}
+        if lp is not None:
+            payload["LocalProblem"] = self.map_local_problem(lp)
+        if delta is not None:
+            payload["PlanDelta"] = self.map_plan_delta(delta)
+        if signals is not None:
+            payload["SharedSignals"] = self.map_shared_signals(signals)
+        if log is not None:
+            payload["AuditLog"] = self.map_audit_log(log)
+        return payload
+
 
 __all__ = [
     "LocalProblem",
diff --git a/tests/test_energi_bridge.py b/tests/test_energi_bridge.py
index 3c59e55..9349032 100644
--- a/tests/test_energi_bridge.py
+++ b/tests/test_energi_bridge.py
@@ -8,6 +8,7 @@ from idea15_edgemind_verifiable_onboard.energi_bridge import (
     SharedSignals,
     PlanDelta,
     AdapterContract,
+    AuditLog,
 )
 
 
@@ -42,3 +43,22 @@ def test_map_plan_delta_basic():
     assert canon["timestamp"] == 123.456
     assert canon["delta_actions"] == ["move_forward"]
     assert canon["safety_tags"] == ["ok"]
+
+
+def test_map_audit_log_and_export_envelope():
+    eb = EnergiBridge()
+    log = AuditLog(entries=["started", "validated", "completed"])
+    audit_can = eb.map_audit_log(log)
+    assert audit_can["canonical"] == "AuditLog"
+    assert audit_can["entries"] == ["started", "validated", "completed"]
+
+    # Envelope export with all components
+    lp = LocalProblem(asset_id="robot-02", tasks=["navigate"], budgets={"energy": 5.0})
+    delta = PlanDelta(timestamp=2.5, delta_actions=["turn"], safety_tags=["ok"])
+    signals = SharedSignals(version=2, data={"latency": 5})
+    envelope = eb.export_envelope(lp=lp, delta=delta, signals=signals, log=log)
+    assert envelope["canonical"] == "Envelope"
+    assert envelope["LocalProblem"]["asset_id"] == "robot-02"
+    assert envelope["PlanDelta"]["timestamp"] == 2.5
+    assert envelope["SharedSignals"]["version"] == 2
+    assert envelope["AuditLog"]["entries"] == ["started", "validated", "completed"]