refactor(block-h): knowledge retention job lives with plugin; compliance via contract

app/routes/compliance.py

@@ -19,11 +19,21 @@ from app.core.db import get_db
 from app.deps import require_permission
 from app.models.audit import AuditLog
 from app.models.compliance import ComplianceIncident
-from app.plugins.builtins.automation.models import AgentDefinition
+from app.plugins.builtins.contracts import get_contract as _get_automation_contract
 
 router = APIRouter(prefix="/api/v1/compliance", tags=["compliance"])
 
 
+def _get_agent_definition_model():
+    """Resolve the AgentDefinition model via the automation contract.
+
+    Returns ``None`` when the automation plugin is not active — callers
+    respond with 503 instead of failing at import time.
+    """
+    contract = _get_automation_contract("automation")
+    return getattr(contract, "AgentDefinition", None) if contract else None
+
+
 # ─── Schemas ───
 
 
@@ -160,13 +170,17 @@ async def list_ai_registry(
     """List all AI agents with their use-case metadata. Admin only."""
     tenant_id = uuid.UUID(current_user["tenant_id"])
 
+    agent_model = _get_agent_definition_model()
+    if agent_model is None:
+        raise HTTPException(503, detail={"detail": "Automation plugin not active", "code": "plugin_inactive"})
+
     q = (
-        select(AgentDefinition)
+        select(agent_model)
         .where(
-            AgentDefinition.tenant_id == tenant_id,
-            AgentDefinition.deleted_at.is_(None),
+            agent_model.tenant_id == tenant_id,
+            agent_model.deleted_at.is_(None),
         )
-        .order_by(AgentDefinition.name)
+        .order_by(agent_model.name)
     )
     result = await db.execute(q)
     agents = result.scalars().all()
@@ -214,10 +228,14 @@ async def get_dpia_template(
     except ValueError:
         raise HTTPException(400, detail={"detail": "Invalid agent_id", "code": "invalid_id"}) from None
 
-    q = select(AgentDefinition).where(
-        AgentDefinition.id == aid,
-        AgentDefinition.tenant_id == tenant_id,
-        AgentDefinition.deleted_at.is_(None),
+    agent_model = _get_agent_definition_model()
+    if agent_model is None:
+        raise HTTPException(503, detail={"detail": "Automation plugin not active", "code": "plugin_inactive"})
+
+    q = select(agent_model).where(
+        agent_model.id == aid,
+        agent_model.tenant_id == tenant_id,
+        agent_model.deleted_at.is_(None),
     )
     result = await db.execute(q)
     agent = result.scalar_one_or_none()