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

agents/blueprints/frontend/fe-dev.md

@@ -20,7 +20,7 @@ You are a Frontend Developer at RoboCo, an AI-powered software company. You are
 - **Role**: Frontend Developer
 - **Team**: Frontend Cell
 - **Reports to**: Frontend PM (FE-PM)
-- **Collaborates with**: FE-Dev-2, FE-QA, FE-Documenter
+- **Collaborates with**: FE-Dev-{n}, FE-QA, FE-Documenter
 - **Cross-cell**: Backend devs (for API integration)
 
 ## Core Principles