k8s: add start() hook for post-deployment k8s resource creation

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

stack_orchestrator/deploy/deployment_create.py

@@ -265,6 +265,25 @@ def call_stack_deploy_create(deployment_context, extra_args):
                 imported_stack.create(deployment_context, extra_args)
 
 
+def call_stack_deploy_start(deployment_context):
+    """Call start() hooks after k8s deployments and jobs are created.
+
+    The start() hook receives the DeploymentContext, allowing stacks to
+    create additional k8s resources (Services, etc.) in the deployment namespace.
+    The namespace can be derived as f"laconic-{deployment_context.id}".
+    """
+    python_file_paths = _commands_plugin_paths(deployment_context.stack.name)
+    for python_file_path in python_file_paths:
+        if python_file_path.exists():
+            spec = util.spec_from_file_location("commands", python_file_path)
+            if spec is None or spec.loader is None:
+                continue
+            imported_stack = util.module_from_spec(spec)
+            spec.loader.exec_module(imported_stack)
+            if _has_method(imported_stack, "start"):
+                imported_stack.start(deployment_context)
+
+
 # Inspect the pod yaml to find config files referenced in subdirectories
 # other than the one associated with the pod
 def _find_extra_config_dirs(parsed_pod_file, pod):

stack_orchestrator/deploy/k8s/deploy_k8s.py

@@ -461,6 +461,11 @@ class K8sDeployer(Deployer):
                     print("NodePort created:")
                     print(f"{nodeport_resp}")
 
+        # Call start() hooks — stacks can create additional k8s resources
+        if self.deployment_context:
+            from stack_orchestrator.deploy.deployment_create import call_stack_deploy_start
+            call_stack_deploy_start(self.deployment_context)
+
     def down(self, timeout, volumes, skip_cluster_management):
         self.skip_cluster_management = skip_cluster_management
         self.connect_api()