feat(governance): Add GovernancePlugin for runtime agent governance

src/google/adk_community/__init__.py

@@ -12,6 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+from . import governance
 from . import memory
 from . import sessions
 from . import version

src/google/adk_community/governance/__init__.py

@@ -0,0 +1,43 @@
+# Copyright 2026 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Governance plugin for ADK agents.
+
+Provides runtime governance — policy-based tool filtering, delegation scope
+enforcement, and structured audit trails — without modifying agent logic.
+"""
+
+from .governance_plugin import AuditAction
+from .governance_plugin import AuditEvent
+from .governance_plugin import AuditHandler
+from .governance_plugin import Decision
+from .governance_plugin import DelegationScope
+from .governance_plugin import GovernancePlugin
+from .governance_plugin import LoggingAuditHandler
+from .governance_plugin import PolicyDecision
+from .governance_plugin import PolicyEvaluator
+from .governance_plugin import ToolPolicy
+
+__all__ = [
+    "AuditAction",
+    "AuditEvent",
+    "AuditHandler",
+    "Decision",
+    "DelegationScope",
+    "GovernancePlugin",
+    "LoggingAuditHandler",
+    "PolicyDecision",
+    "PolicyEvaluator",
+    "ToolPolicy",
+]