diff --git a/.github/workflows/lab4.yml b/.github/workflows/lab4.yml
deleted file mode 100644
index d800c6f..0000000
--- a/.github/workflows/lab4.yml
+++ /dev/null
@@ -1,25 +0,0 @@
-name: Lab 4 Grading
-
-on: [push]
-
-env:
-  FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: "true"
-
-jobs:
-  helm-validate:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout code
-        uses: actions/checkout@v4
-
-      # Встановлюємо Helm у хмарне середовище
-      - name: Set up Helm
-        uses: azure/setup-helm@v4
-        with:
-          version: 'v3.12.0'
-
-      # Запускаємо автоматичну перевірку
-      - name: Run Helm Grading Script
-        run: |
-          chmod +x ./tests/lab4_test.sh
-          ./tests/lab4_test.sh
diff --git a/charts/ecommerce-app/Chart.yaml b/charts/ecommerce-app/Chart.yaml
deleted file mode 100644
index 9d96005..0000000
--- a/charts/ecommerce-app/Chart.yaml
+++ /dev/null
@@ -1,6 +0,0 @@
-apiVersion: v2
-name: ecommerce-app
-description: A Helm chart for our Commerce-Ready FastAPI application
-type: application
-version: 0.1.0
-appVersion: "1.0.0"
diff --git a/charts/ecommerce-app/templates/deployment.yaml b/charts/ecommerce-app/templates/deployment.yaml
deleted file mode 100644
index 1e817f6..0000000
--- a/charts/ecommerce-app/templates/deployment.yaml
+++ /dev/null
@@ -1,41 +0,0 @@
-apiVersion: apps/v1
-kind: Deployment
-metadata:
-  name: ecommerce-app
-  labels:
-    app: ecommerce
-spec:
-  replicas: {{ .Values.replicaCount }}
-  selector:
-    matchLabels:
-      app: ecommerce
-  template:
-    metadata:
-      labels:
-        app: ecommerce
-    spec:
-      containers:
-      - name: ecommerce-app
-        image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
-        imagePullPolicy: {{ .Values.image.pullPolicy }}
-        ports:
-        - containerPort: 8080
-        envFrom:
-        - configMapRef:
-            name: ecommerce-config
-        - secretRef:
-            name: ecommerce-secret
-        livenessProbe:
-          httpGet:
-            path: /health
-            port: 8080
-          initialDelaySeconds: 5
-          periodSeconds: 10
-        readinessProbe:
-          httpGet:
-            path: /health
-            port: 8080
-          initialDelaySeconds: 5
-          periodSeconds: 10
-        resources:
-          {{- toYaml .Values.resources | nindent 10 }}
diff --git a/charts/ecommerce-app/templates/infrastructure.yaml b/charts/ecommerce-app/templates/infrastructure.yaml
deleted file mode 100644
index 184a26c..0000000
--- a/charts/ecommerce-app/templates/infrastructure.yaml
+++ /dev/null
@@ -1,29 +0,0 @@
-apiVersion: v1
-kind: Service
-metadata:
-  name: ecommerce-app-service
-spec:
-  type: ClusterIP
-  ports:
-  - port: 8080
-    targetPort: 8080
-  selector:
-    app: ecommerce
----
-apiVersion: v1
-kind: ConfigMap
-metadata:
-  name: ecommerce-config
-data:
-  DB_HOST: "db-service"
-  DB_PORT: "5432"
-  DB_NAME: "ecommerce"
-  DB_USER: "postgres"
----
-apiVersion: v1
-kind: Secret
-metadata:
-  name: ecommerce-secret
-type: Opaque
-data:
-  DB_PASSWORD: "cGFzc3dvcmQ="
diff --git a/charts/ecommerce-app/values-prod.yaml b/charts/ecommerce-app/values-prod.yaml
deleted file mode 100644
index 6bc803e..0000000
--- a/charts/ecommerce-app/values-prod.yaml
+++ /dev/null
@@ -1 +0,0 @@
-replicaCount: 3
diff --git a/charts/ecommerce-app/values.yaml b/charts/ecommerce-app/values.yaml
deleted file mode 100644
index 6e866af..0000000
--- a/charts/ecommerce-app/values.yaml
+++ /dev/null
@@ -1,14 +0,0 @@
-replicaCount: 2
-
-image:
-  repository: ghcr.io/ihnatkinyevhenii/ecommerce-app
-  tag: latest
-  pullPolicy: Always
-
-resources:
-  limits:
-    cpu: 200m
-    memory: 256Mi
-  requests:
-    cpu: 100m
-    memory: 128Mi
diff --git a/tests/lab4_test.sh b/tests/lab4_test.sh
deleted file mode 100644
index c9631c6..0000000
--- a/tests/lab4_test.sh
+++ /dev/null
@@ -1,22 +0,0 @@
-#!/bin/bash
-set -e
-
-echo "--- Starting Lab 4 Grading (Helm Check) ---"
-
-# 1. Валідація чарта
-echo "Step 1: Running helm lint..."
-helm lint ./charts/ecommerce-app
-
-# 2. Перевірка шаблонізації для Prod
-echo "Step 2: Checking Production replica count..."
-REPLICAS=$(helm template ecommerce ./charts/ecommerce-app -f ./charts/ecommerce-app/values-prod.yaml | grep 'replicas: 3' | xargs)
-if [ "$REPLICAS" != "replicas: 3" ]; then
-  echo "❌ Error: values-prod.yaml should set replicas to 3."
-  exit 1
-fi
-
-# 3. Надійне тестування рендерингу (Заміна dry-run для роботи без кластера)
-echo "Step 3: Testing Dry-run installation via template engine..."
-helm template ecommerce ./charts/ecommerce-app --debug > /dev/null
-
-echo "✅ SUCCESS: Lab 4 is passed!"