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+# Helm Chart Implementation Plan
+
+> **For Claude:** REQUIRED SUB-SKILL: Use superpowers:executing-plans to implement this plan task-by-task.
+
+**Goal:** Add Helm chart for Kubernetes deployment with frontend, backend, ingress, and persistence.
+
+**Architecture:** Single Helm chart with templates for Deployments, Services, Ingress, ConfigMap, Secret, and PVC.
+
+**Tech Stack:** Helm 3, Kubernetes
+
+---
+
+### Task 1: Create Helm chart structure
+
+**Files:**
+- Create: `helm/cv-app/Chart.yaml`
+- Create: `helm/cv-app/.helmignore`
+
+**Step 1: Create helm directory**
+
+```bash
+mkdir -p helm/cv-app/templates
+```
+
+**Step 2: Create Chart.yaml**
+
+```yaml
+apiVersion: v2
+name: cv-app
+description: A Helm chart for CV application
+type: application
+version: 0.1.0
+appVersion: "1.0.0"
+maintainers:
+  - name: Tuan-Dat Tran
+    email: tuan-dat.tran@tudattr.dev
+```
+
+**Step 3: Create .helmignore**
+
+```
+# Patterns to ignore when building packages.
+.git/
+.github/
+.vscode/
+.idea/
+
+# Test files
+*_test.go
+tests/
+
+# Documentation
+*.md
+!README.md
+docs/
+
+# CI/CD
+.github/
+```
+
+**Step 4: Commit**
+
+```bash
+git add helm/cv-app/Chart.yaml helm/cv-app/.helmignore
+git commit -m "feat(helm): add chart structure and metadata"
+```
+
+---
+
+### Task 2: Create helper templates
+
+**Files:**
+- Create: `helm/cv-app/templates/_helpers.tpl`
+
+**Step 1: Create _helpers.tpl**
+
+```yaml
+{{- define "cv-app.name" -}}
+{{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{- define "cv-app.fullname" -}}
+{{- if .Values.fullnameOverride }}
+{{- .Values.fullnameOverride | trunc 63 | trimSuffix "-" }}
+{{- else }}
+{{- $name := default .Chart.Name .Values.nameOverride }}
+{{- if contains $name .Release.Name }}
+{{- .Release.Name | trunc 63 | trimSuffix "-" }}
+{{- else }}
+{{- printf "%s-%s" .Release.Name $name | trunc 63 | trimSuffix "-" }}
+{{- end }}
+{{- end }}
+{{- end }}
+
+{{- define "cv-app.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" }}
+{{- end }}
+
+{{- define "cv-app.labels" -}}
+helm.sh/chart: {{ include "cv-app.chart" . }}
+{{ include "cv-app.selectorLabels" . }}
+{{- if .Chart.AppVersion }}
+app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
+{{- end }}
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- end }}
+
+{{- define "cv-app.selectorLabels" -}}
+app.kubernetes.io/name: {{ include "cv-app.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end }}
+
+{{- define "cv-app.serviceAccountName" -}}
+{{- if .Values.serviceAccount.create }}
+{{- default (include "cv-app.fullname" .) .Values.serviceAccount.name }}
+{{- else }}
+{{- default "default" .Values.serviceAccount.name }}
+{{- end }}
+{{- end }}
+```
+
+**Step 2: Commit**
+
+```bash
+git add helm/cv-app/templates/_helpers.tpl
+git commit -m "feat(helm): add template helpers"
+```
+
+---
+
+### Task 3: Create default values
+
+**Files:**
+- Create: `helm/cv-app/values.yaml`
+
+**Step 1: Create values.yaml**
+
+```yaml
+frontend:
+  replicaCount: 1
+  image:
+    repository: username/cv-app
+    tag: latest
+    pullPolicy: IfNotPresent
+  resources: {}
+
+backend:
+  replicaCount: 1
+  image:
+    repository: username/cv-app-backend
+    tag: latest
+    pullPolicy: IfNotPresent
+  auth:
+    mode: simple
+  keycloak:
+    url: ""
+    realm: ""
+    clientId: ""
+  resources: {}
+
+persistence:
+  enabled: true
+  size: 1Gi
+  storageClass: ""
+
+ingress:
+  enabled: true
+  className: ""
+  annotations: {}
+  hosts:
+    - host: cv.local
+      paths:
+        - path: /
+          service: frontend
+        - path: /api
+          service: backend
+  tls: []
+
+imagePullSecrets: []
+nameOverride: ""
+fullnameOverride: ""
+
+serviceAccount:
+  create: true
+  annotations: {}
+  name: ""
+
+podAnnotations: {}
+podSecurityContext: {}
+securityContext: {}
+
+nodeSelector: {}
+tolerations: []
+affinity: {}
+```
+
+**Step 2: Commit**
+
+```bash
+git add helm/cv-app/values.yaml
+git commit -m "feat(helm): add default values configuration"
+```
+
+---
+
+### Task 4: Create ConfigMap template
+
+**Files:**
+- Create: `helm/cv-app/templates/configmap.yaml`
+
+**Step 1: Create configmap.yaml**
+
+```yaml
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: {{ include "cv-app.fullname" . }}-config
+  labels:
+    {{- include "cv-app.labels" . | nindent 4 }}
+data:
+  PORT: "3001"
+  DB_PATH: "/app/data/cv.db"
+  AUTH_MODE: {{ .Values.backend.auth.mode | quote }}
+  {{- if eq .Values.backend.auth.mode "keycloak" }}
+  KEYCLOAK_URL: {{ .Values.backend.keycloak.url | quote }}
+  KEYCLOAK_REALM: {{ .Values.backend.keycloak.realm | quote }}
+  KEYCLOAK_CLIENT_ID: {{ .Values.backend.keycloak.clientId | quote }}
+  {{- end }}
+```
+
+**Step 2: Commit**
+
+```bash
+git add helm/cv-app/templates/configmap.yaml
+git commit -m "feat(helm): add ConfigMap template"
+```
+
+---
+
+### Task 5: Create Secret template
+
+**Files:**
+- Create: `helm/cv-app/templates/secret.yaml`
+
+**Step 1: Create secret.yaml**
+
+```yaml
+apiVersion: v1
+kind: Secret
+metadata:
+  name: {{ include "cv-app.fullname" . }}-secret
+  labels:
+    {{- include "cv-app.labels" . | nindent 4 }}
+type: Opaque
+data:
+  {{- if eq .Values.backend.auth.mode "simple" }}
+  JWT_SECRET: {{ randAlphaNum 32 | b64enc | quote }}
+  {{- end }}
+```
+
+**Step 2: Commit**
+
+```bash
+git add helm/cv-app/templates/secret.yaml
+git commit -m "feat(helm): add Secret template for JWT"
+```
+
+---
+
+### Task 6: Create PVC template
+
+**Files:**
+- Create: `helm/cv-app/templates/pvc.yaml`
+
+**Step 1: Create pvc.yaml**
+
+```yaml
+{{- if .Values.persistence.enabled -}}
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: {{ include "cv-app.fullname" . }}-data
+  labels:
+    {{- include "cv-app.labels" . | nindent 4 }}
+spec:
+  accessModes:
+    - ReadWriteOnce
+  {{- if .Values.persistence.storageClass }}
+  storageClassName: {{ .Values.persistence.storageClass | quote }}
+  {{- end }}
+  resources:
+    requests:
+      storage: {{ .Values.persistence.size }}
+{{- end }}
+```
+
+**Step 2: Commit**
+
+```bash
+git add helm/cv-app/templates/pvc.yaml
+git commit -m "feat(helm): add PersistentVolumeClaim template"
+```
+
+---
+
+### Task 7: Create backend Deployment and Service
+
+**Files:**
+- Create: `helm/cv-app/templates/backend-deployment.yaml`
+- Create: `helm/cv-app/templates/backend-service.yaml`
+
+**Step 1: Create backend-deployment.yaml**
+
+```yaml
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ include "cv-app.fullname" . }}-backend
+  labels:
+    {{- include "cv-app.labels" . | nindent 4 }}
+    app.kubernetes.io/component: backend
+spec:
+  replicas: {{ .Values.backend.replicaCount }}
+  selector:
+    matchLabels:
+      {{- include "cv-app.selectorLabels" . | nindent 6 }}
+      app.kubernetes.io/component: backend
+  template:
+    metadata:
+      annotations:
+        checksum/config: {{ include (print $.Template.BasePath "/configmap.yaml") . | sha256sum }}
+        checksum/secret: {{ include (print $.Template.BasePath "/secret.yaml") . | sha256sum }}
+        {{- with .Values.podAnnotations }}
+        {{- toYaml . | nindent 8 }}
+        {{- end }}
+      labels:
+        {{- include "cv-app.selectorLabels" . | nindent 8 }}
+        app.kubernetes.io/component: backend
+    spec:
+      {{- with .Values.imagePullSecrets }}
+      imagePullSecrets:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      serviceAccountName: {{ include "cv-app.serviceAccountName" . }}
+      securityContext:
+        {{- toYaml .Values.podSecurityContext | nindent 8 }}
+      containers:
+        - name: backend
+          securityContext:
+            {{- toYaml .Values.securityContext | nindent 12 }}
+          image: "{{ .Values.backend.image.repository }}:{{ .Values.backend.image.tag | default .Chart.AppVersion }}"
+          imagePullPolicy: {{ .Values.backend.image.pullPolicy }}
+          ports:
+            - name: http
+              containerPort: 3001
+              protocol: TCP
+          envFrom:
+            - configMapRef:
+                name: {{ include "cv-app.fullname" . }}-config
+            - secretRef:
+                name: {{ include "cv-app.fullname" . }}-secret
+          volumeMounts:
+            - name: data
+              mountPath: /app/data
+          livenessProbe:
+            httpGet:
+              path: /health
+              port: http
+          readinessProbe:
+            httpGet:
+              path: /health
+              port: http
+          resources:
+            {{- toYaml .Values.backend.resources | nindent 12 }}
+      volumes:
+        - name: data
+          {{- if .Values.persistence.enabled }}
+          persistentVolumeClaim:
+            claimName: {{ include "cv-app.fullname" . }}-data
+          {{- else }}
+          emptyDir: {}
+          {{- end }}
+      {{- with .Values.nodeSelector }}
+      nodeSelector:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.affinity }}
+      affinity:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.tolerations }}
+      tolerations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+```
+
+**Step 2: Create backend-service.yaml**
+
+```yaml
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ include "cv-app.fullname" . }}-backend
+  labels:
+    {{- include "cv-app.labels" . | nindent 4 }}
+    app.kubernetes.io/component: backend
+spec:
+  type: ClusterIP
+  ports:
+    - port: 3001
+      targetPort: http
+      protocol: TCP
+      name: http
+  selector:
+    {{- include "cv-app.selectorLabels" . | nindent 4 }}
+    app.kubernetes.io/component: backend
+```
+
+**Step 3: Commit**
+
+```bash
+git add helm/cv-app/templates/backend-deployment.yaml helm/cv-app/templates/backend-service.yaml
+git commit -m "feat(helm): add backend Deployment and Service templates"
+```
+
+---
+
+### Task 8: Create frontend Deployment and Service
+
+**Files:**
+- Create: `helm/cv-app/templates/frontend-deployment.yaml`
+- Create: `helm/cv-app/templates/frontend-service.yaml`
+
+**Step 1: Create frontend-deployment.yaml**
+
+```yaml
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ include "cv-app.fullname" . }}-frontend
+  labels:
+    {{- include "cv-app.labels" . | nindent 4 }}
+    app.kubernetes.io/component: frontend
+spec:
+  replicas: {{ .Values.frontend.replicaCount }}
+  selector:
+    matchLabels:
+      {{- include "cv-app.selectorLabels" . | nindent 6 }}
+      app.kubernetes.io/component: frontend
+  template:
+    metadata:
+      annotations:
+        checksum/config: {{ include (print $.Template.BasePath "/configmap.yaml") . | sha256sum }}
+        {{- with .Values.podAnnotations }}
+        {{- toYaml . | nindent 8 }}
+        {{- end }}
+      labels:
+        {{- include "cv-app.selectorLabels" . | nindent 8 }}
+        app.kubernetes.io/component: frontend
+    spec:
+      {{- with .Values.imagePullSecrets }}
+      imagePullSecrets:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      serviceAccountName: {{ include "cv-app.serviceAccountName" . }}
+      securityContext:
+        {{- toYaml .Values.podSecurityContext | nindent 8 }}
+      containers:
+        - name: frontend
+          securityContext:
+            {{- toYaml .Values.securityContext | nindent 12 }}
+          image: "{{ .Values.frontend.image.repository }}:{{ .Values.frontend.image.tag | default .Chart.AppVersion }}"
+          imagePullPolicy: {{ .Values.frontend.image.pullPolicy }}
+          ports:
+            - name: http
+              containerPort: 80
+              protocol: TCP
+          livenessProbe:
+            httpGet:
+              path: /
+              port: http
+          readinessProbe:
+            httpGet:
+              path: /
+              port: http
+          resources:
+            {{- toYaml .Values.frontend.resources | nindent 12 }}
+      {{- with .Values.nodeSelector }}
+      nodeSelector:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.affinity }}
+      affinity:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      {{- with .Values.tolerations }}
+      tolerations:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+```
+
+**Step 2: Create frontend-service.yaml**
+
+```yaml
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ include "cv-app.fullname" . }}-frontend
+  labels:
+    {{- include "cv-app.labels" . | nindent 4 }}
+    app.kubernetes.io/component: frontend
+spec:
+  type: ClusterIP
+  ports:
+    - port: 80
+      targetPort: http
+      protocol: TCP
+      name: http
+  selector:
+    {{- include "cv-app.selectorLabels" . | nindent 4 }}
+    app.kubernetes.io/component: frontend
+```
+
+**Step 3: Commit**
+
+```bash
+git add helm/cv-app/templates/frontend-deployment.yaml helm/cv-app/templates/frontend-service.yaml
+git commit -m "feat(helm): add frontend Deployment and Service templates"
+```
+
+---
+
+### Task 9: Create Ingress template
+
+**Files:**
+- Create: `helm/cv-app/templates/ingress.yaml`
+
+**Step 1: Create ingress.yaml**
+
+```yaml
+{{- if .Values.ingress.enabled -}}
+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  name: {{ include "cv-app.fullname" . }}
+  labels:
+    {{- include "cv-app.labels" . | nindent 4 }}
+  {{- with .Values.ingress.annotations }}
+  annotations:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
+spec:
+  {{- if .Values.ingress.className }}
+  ingressClassName: {{ .Values.ingress.className }}
+  {{- end }}
+  {{- if .Values.ingress.tls }}
+  tls:
+    {{- range .Values.ingress.tls }}
+    - hosts:
+        {{- range .hosts }}
+        - {{ . | quote }}
+        {{- end }}
+      secretName: {{ .secretName }}
+    {{- end }}
+  {{- end }}
+  rules:
+    {{- range .Values.ingress.hosts }}
+    - host: {{ .host | quote }}
+      http:
+        paths:
+          {{- range .paths }}
+          - path: {{ .path }}
+            pathType: Prefix
+            backend:
+              service:
+                name: {{ include "cv-app.fullname" $ }}-{{ .service }}
+                port:
+                  number: {{ if eq .service "frontend" }}80{{ else }}3001{{ end }}
+          {{- end }}
+    {{- end }}
+{{- end }}
+```
+
+**Step 2: Commit**
+
+```bash
+git add helm/cv-app/templates/ingress.yaml
+git commit -m "feat(helm): add Ingress template"
+```
+
+---
+
+### Task 10: Create NOTES.txt and update documentation
+
+**Files:**
+- Create: `helm/cv-app/templates/NOTES.txt`
+- Modify: `docs/architecture.md`
+
+**Step 1: Create NOTES.txt**
+
+```
+Your CV application has been deployed!
+
+Access your application at:
+{{- if .Values.ingress.enabled }}
+{{- range $host := .Values.ingress.hosts }}
+  http{{ if $.Values.ingress.tls }}s{{ end }}://{{ $host.host }}
+{{- end }}
+{{- else }}
+  Frontend: http://{{ include "cv-app.fullname" . }}-frontend.{{ .Release.Namespace }}.svc.cluster.local
+  Backend API: http://{{ include "cv-app.fullname" . }}-backend.{{ .Release.Namespace }}.svc.cluster.local:3001
+{{- end }}
+
+{{- if eq .Values.backend.auth.mode "simple" }}
+Get the admin password:
+  kubectl logs deployment/{{ include "cv-app.fullname" . }}-backend | grep "ADMIN PASSWORD"
+{{- end }}
+
+API Documentation:
+{{- if .Values.ingress.enabled }}
+{{- if .Values.ingress.tls }}
+  https://{{ (index .Values.ingress.hosts 0).host }}/api/docs
+{{- else }}
+  http://{{ (index .Values.ingress.hosts 0).host }}/api/docs
+{{- end }}
+{{- else }}
+  http://{{ include "cv-app.fullname" . }}-backend.{{ .Release.Namespace }}.svc.cluster.local:3001/api/docs
+{{- end }}
+```
+
+**Step 2: Commit**
+
+```bash
+git add helm/cv-app/templates/NOTES.txt
+git commit -m "feat(helm): add post-install notes"
+```