refactor(firecrawl): Convert to production-ready Helm chart with persistent storage

CRITICAL FIXES:
✅ Add PersistentVolumeClaims for all stateful services
   - PostgreSQL: 20Gi PVC on nfs-emporium (data persistence)
   - Redis: 10Gi PVC on nfs-emporium (cache and queue)
   - RabbitMQ: 5Gi PVC on nfs-emporium (message queue)

✅ Pin all image versions (no more 'latest' tags)
   - Firecrawl API/Worker: v1.0.0
   - Playwright Service: v1.0.0
   - PostgreSQL (nuq-postgres): v1.0.0
   - Redis: 7.4.1-alpine
   - RabbitMQ: 3.13.7-management-alpine

✅ Convert raw manifests to proper Helm chart
   - Template-based configuration
   - Centralized values.yaml
   - Proper Helm helpers and labels
   - Easy configuration management

WHAT CHANGED:
- Created chart/ directory with full Helm chart structure
- Moved old manifests to old-manifests/ for reference
- Updated ArgoCD Application to use Helm chart source
- Added comprehensive README and MIGRATION docs
- All services now use nfs-emporium storage class
- Redis configured with AOF persistence
- Proper resource limits and health checks
- Gateway/HTTPRoute configs integrated into chart

DEPLOYMENT:
ArgoCD will automatically sync and apply changes.
Old ephemeral data will be lost (fresh start with persistence).

Resolves data loss issues and brings deployment to production standards.

cluster/applications/firecrawl/chart/templates/api.yaml

@@ -0,0 +1,81 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ include "firecrawl.fullname" . }}-api
+  namespace: {{ .Values.namespace.name }}
+  labels:
+    {{- include "firecrawl.labels" . | nindent 4 }}
+    app.kubernetes.io/component: api
+    epcot.theme/service: spaceship-earth
+spec:
+  replicas: {{ .Values.api.replicaCount }}
+  selector:
+    matchLabels:
+      {{- include "firecrawl.selectorLabels" . | nindent 6 }}
+      app.kubernetes.io/component: api
+  template:
+    metadata:
+      labels:
+        {{- include "firecrawl.selectorLabels" . | nindent 8 }}
+        app.kubernetes.io/component: api
+        epcot.theme/service: spaceship-earth
+    spec:
+      terminationGracePeriodSeconds: 180
+      containers:
+        - name: api
+          image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          command: ["node"]
+          args: ["--max-old-space-size=6144", "dist/src/index.js"]
+          envFrom:
+            - configMapRef:
+                name: {{ include "firecrawl.fullname" . }}-config
+          env:
+            - name: FLY_PROCESS_GROUP
+              value: "app"
+            - name: NUQ_POD_NAME
+              valueFrom:
+                fieldRef:
+                  fieldPath: metadata.name
+          ports:
+            - containerPort: 3002
+              name: http
+          resources:
+            {{- toYaml .Values.api.resources | nindent 12 }}
+          livenessProbe:
+            httpGet:
+              path: /v0/health/liveness
+              port: 3002
+            initialDelaySeconds: 30
+            periodSeconds: 30
+            timeoutSeconds: 5
+            successThreshold: 1
+            failureThreshold: 3
+          readinessProbe:
+            httpGet:
+              path: /v0/health/readiness
+              port: 3002
+            initialDelaySeconds: 30
+            periodSeconds: 30
+            timeoutSeconds: 5
+            successThreshold: 1
+            failureThreshold: 3
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ include "firecrawl.fullname" . }}-api
+  namespace: {{ .Values.namespace.name }}
+  labels:
+    {{- include "firecrawl.labels" . | nindent 4 }}
+    app.kubernetes.io/component: api
+spec:
+  type: {{ .Values.api.service.type }}
+  ports:
+    - port: {{ .Values.api.service.port }}
+      targetPort: http
+      protocol: TCP
+      name: http
+  selector:
+    {{- include "firecrawl.selectorLabels" . | nindent 4 }}
+    app.kubernetes.io/component: api