(feat) Temporal SDK client, worker mgmt, k8s deployments (#10)

## Changes
- `internal/temporal/client.go` — Robust Temporal client with retry (exp backoff), TLS, health check
- `internal/temporal/worker.go` — Worker creation, activity/workflow registration, lifecycle
- `internal/temporal/context.go` — Timeout helpers
- `k8s/worker-deployment.yaml` — 2-10 replica HPA, liveness/readiness probes, security context, pod anti-affinity
- `k8s/workflow-runner-deployment.yaml` — Singleton runner with probes
- `k8s/kustomization.yaml` — Updated resource list

Co-authored-by: poimen <[email protected]>

cmd/worker/main.go

@@ -53,6 +53,7 @@ func main() {
 	w.RegisterWorkflow(workflow.TestWorkflow)
 	w.RegisterWorkflow(workflow.RoutingWorkflow)
 	w.RegisterWorkflow(workflow.WorkflowGraphQuery)
+	w.RegisterWorkflow(workflow.LLMTestWorkflow)
 
 	// Register all activities
 	w.RegisterActivity(activity.CloneRepoActivity)
@@ -72,6 +73,8 @@ func main() {
 
 	// Routing workflow activities
 	w.RegisterActivity(activity.LLMRouterActivity)
+	w.RegisterActivity(activity.LLMInferenceActivity)
+	w.RegisterActivity(activity.LLMBatchInferenceActivity)
 	w.RegisterActivity(activity.ValidateWorkflowSpecActivity)
 	w.RegisterActivity(activity.ValidateCronWorkflowSpecActivity)