feat: CMDB full-stack app - FastAPI + PostgreSQL + React

- PostgreSQL schema: 14 tables, JSONB attributes, audit triggers, soft delete
- FastAPI backend: CRUD, search/filter, relationship graph, bulk import, JWT RBAC
- React frontend: CI table, detail card, force-graph, dashboard
- Seed data: homelab scenario (Proxmox, Mikrotik, VMs, services)
- Docker Compose + Kubernetes manifests
- 20 backend tests (pytest + httpx)

k8s/postgres.yaml

@@ -0,0 +1,70 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: cmdb-postgres
+  labels:
+    app: cmdb-postgres
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: cmdb-postgres
+  template:
+    metadata:
+      labels:
+        app: cmdb-postgres
+    spec:
+      containers:
+        - name: postgres
+          image: postgres:16-alpine
+          ports:
+            - containerPort: 5432
+          env:
+            - name: POSTGRES_DB
+              value: cmdb
+            - name: POSTGRES_USER
+              valueFrom:
+                secretKeyRef:
+                  name: cmdb-secrets
+                  key: db-user
+            - name: POSTGRES_PASSWORD
+              valueFrom:
+                secretKeyRef:
+                  name: cmdb-secrets
+                  key: db-password
+          volumeMounts:
+            - name: pgdata
+              mountPath: /var/lib/postgresql/data
+          resources:
+            requests:
+              memory: 256Mi
+              cpu: 250m
+            limits:
+              memory: 1Gi
+              cpu: 1000m
+      volumes:
+        - name: pgdata
+          persistentVolumeClaim:
+            claimName: cmdb-pgdata
+---
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: cmdb-pgdata
+spec:
+  accessModes:
+    - ReadWriteOnce
+  resources:
+    requests:
+      storage: 10Gi
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: cmdb-postgres
+spec:
+  selector:
+    app: cmdb-postgres
+  ports:
+    - port: 5432
+      targetPort: 5432