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/overlays/development/kustomization.yaml

@@ -0,0 +1,56 @@
+# Development Overlay for RoboCo
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+
+namespace: roboco
+
+resources:
+  - ../../base
+
+# Development-specific patches
+patches:
+  # Single replica for development
+  - patch: |-
+      - op: replace
+        path: /spec/replicas
+        value: 1
+    target:
+      kind: Deployment
+      name: roboco-api
+  # Lower resource limits for development
+  - patch: |-
+      - op: replace
+        path: /spec/template/spec/containers/0/resources/limits/memory
+        value: "512Mi"
+      - op: replace
+        path: /spec/template/spec/containers/0/resources/limits/cpu
+        value: "250m"
+    target:
+      kind: Deployment
+      name: roboco-api
+  # Development PostgreSQL resources
+  - patch: |-
+      - op: replace
+        path: /spec/template/spec/containers/0/resources/limits/memory
+        value: "1Gi"
+      - op: replace
+        path: /spec/template/spec/containers/0/resources/limits/cpu
+        value: "500m"
+    target:
+      kind: StatefulSet
+      name: postgres
+
+# Image tags for development (use latest)
+images:
+  - name: ghcr.io/renzof/roboco-api
+    newTag: latest
+  - name: ghcr.io/renzof/roboco-orchestrator
+    newTag: latest
+
+# Config overrides
+configMapGenerator:
+  - name: roboco-config
+    literals:
+      - ENVIRONMENT=development
+      - LOG_LEVEL=DEBUG
+      - DEBUG=true