🧠 Add Agent Memory System with PostgreSQL + Qdrant + Cohere

Features:
- Three-tier memory architecture (short/mid/long-term)
- PostgreSQL schema for conversations, events, memories
- Qdrant vector database for semantic search
- Cohere embeddings (embed-multilingual-v3.0, 1024 dims)
- FastAPI Memory Service with full CRUD
- External Secrets integration with Vault
- Kubernetes deployment manifests

Components:
- infrastructure/database/agent-memory-schema.sql
- infrastructure/kubernetes/apps/qdrant/
- infrastructure/kubernetes/apps/memory-service/
- services/memory-service/ (FastAPI app)

Also includes:
- External Secrets Operator
- Traefik Ingress Controller
- Cert-Manager with Let's Encrypt
- ArgoCD for GitOps

infrastructure/kubernetes/apps/memory-service/deployment.yaml

@@ -0,0 +1,105 @@
+---
+# DAARION Memory Service
+# Agent memory management with PostgreSQL + Qdrant + Cohere
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: memory-service
+  namespace: daarion
+  labels:
+    app: memory-service
+    component: memory
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: memory-service
+  template:
+    metadata:
+      labels:
+        app: memory-service
+        component: memory
+    spec:
+      nodeSelector:
+        node-role.kubernetes.io/control-plane: "true"
+      containers:
+        - name: memory-service
+          image: ghcr.io/ivantytar/memory-service:latest
+          imagePullPolicy: Always
+          ports:
+            - containerPort: 8000
+              name: http
+          envFrom:
+            - secretRef:
+                name: memory-service-secrets
+          env:
+            - name: MEMORY_DEBUG
+              value: "false"
+          resources:
+            requests:
+              memory: "256Mi"
+              cpu: "100m"
+            limits:
+              memory: "512Mi"
+              cpu: "500m"
+          livenessProbe:
+            httpGet:
+              path: /health
+              port: 8000
+            initialDelaySeconds: 30
+            periodSeconds: 10
+          readinessProbe:
+            httpGet:
+              path: /health
+              port: 8000
+            initialDelaySeconds: 5
+            periodSeconds: 5
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: memory-service
+  namespace: daarion
+spec:
+  selector:
+    app: memory-service
+  ports:
+    - name: http
+      port: 8000
+      targetPort: 8000
+  type: ClusterIP
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: memory-service-external
+  namespace: daarion
+spec:
+  selector:
+    app: memory-service
+  ports:
+    - name: http
+      port: 8000
+      targetPort: 8000
+      nodePort: 30800
+  type: NodePort
+---
+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  name: memory-service-ingress
+  namespace: daarion
+  annotations:
+    traefik.ingress.kubernetes.io/router.entrypoints: web
+spec:
+  rules:
+    - host: memory.daarion.local
+      http:
+        paths:
+          - path: /
+            pathType: Prefix
+            backend:
+              service:
+                name: memory-service
+                port:
+                  number: 8000