feat: add Kubernetes manifests and A2A protocol support

Phase 2 - A2A Protocol:
- Add A2A models (AgentCard, Task, Message)
- Add A2A service layer
- Add A2A routes with SSE streaming
- Add agent discovery endpoints

Phase 3 - Kubernetes:
- Add deploy/ directory with Kustomize structure
- PostgreSQL StatefulSet with pgvector
- Redis Deployment with persistence
- API and Orchestrator Deployments
- RBAC for orchestrator to manage Jobs
- ArgoCD Application manifest
- Development and production overlays
- K8s Jobs API support in orchestrator

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

deploy/base/storage/storageclass.yaml

@@ -0,0 +1,19 @@
+# NFS StorageClass for RoboCo
+# Uses NFS CSI driver for persistent storage on UGREEN NAS
+apiVersion: storage.k8s.io/v1
+kind: StorageClass
+metadata:
+  name: nfs-roboco
+provisioner: nfs.csi.k8s.io
+parameters:
+  # NFS server address (UGREEN NAS)
+  server: 192.168.50.111
+  # NFS share path
+  share: /volume1/roboco/k8s-data
+reclaimPolicy: Retain
+volumeBindingMode: Immediate
+mountOptions:
+  - nfsvers=4.1
+  - hard
+  - timeo=600
+  - retrans=2