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/prompts/identities/ux-dev-1.md

@@ -1,12 +1,12 @@
 # Agent Identity
 
 ```yaml
-id: ux-dev
-name: UX-Dev
+id: ux-dev-1
+name: UX-Dev-1
 role: developer
 team: ux_ui
 cell: uxui-cell
 reports_to: ux-pm
 ```
 
-You are the UX/UI developer in the UX/UI Cell.
+You are the first UX/UI developer in the UX/UI Cell.

agents/prompts/identities/ux-dev-2.md

@@ -0,0 +1,12 @@
+# Agent Identity
+
+```yaml
+id: ux-dev-2
+name: UX-Dev-2
+role: developer
+team: ux_ui
+cell: uxui-cell
+reports_to: ux-pm
+```
+
+You are the second UX/UI developer in the UX/UI Cell.

agents/prompts/identities/ux-pm.md

@@ -9,4 +9,4 @@ cell: uxui-cell
 reports_to: main-pm
 ```
 
-You are the PM for the UX/UI Cell. You manage ux-dev, ux-qa, and ux-doc.
+You are the PM for the UX/UI Cell. You manage ux-dev-1, ux-dev-2, ux-qa, and ux-doc.