diff --git a/.sisyphus/evidence/task-25-kustomize-dev.yaml b/.sisyphus/evidence/task-25-kustomize-dev.yaml
new file mode 100644
index 0000000..c490889
--- /dev/null
+++ b/.sisyphus/evidence/task-25-kustomize-dev.yaml
@@ -0,0 +1,495 @@
+apiVersion: v1
+data:
+  init.sql: |
+    -- Create keycloak database and user
+    CREATE DATABASE keycloak;
+    CREATE USER keycloak WITH PASSWORD 'keycloakpass';
+    GRANT ALL PRIVILEGES ON DATABASE keycloak TO keycloak;
+
+    -- Keycloak database permissions
+    \c keycloak
+    GRANT ALL PRIVILEGES ON SCHEMA public TO keycloak;
+    ALTER SCHEMA public OWNER TO keycloak;
+
+    -- Application database permissions
+    \c workclub
+    GRANT ALL PRIVILEGES ON SCHEMA public TO app;
+    ALTER SCHEMA public OWNER TO app;
+kind: ConfigMap
+metadata:
+  labels:
+    app: workclub-postgres
+    environment: development
+  name: postgres-init
+  namespace: workclub-dev
+---
+apiVersion: v1
+data:
+  api-base-url: http://workclub-api
+  cors-origins: http://localhost:3000
+  database-host: workclub-postgres
+  database-name: workclub
+  database-port: "5432"
+  keycloak-realm: workclub
+  keycloak-url: http://workclub-keycloak
+  log-level: Information
+kind: ConfigMap
+metadata:
+  labels:
+    app: workclub
+    environment: development
+  name: workclub-config
+  namespace: workclub-dev
+---
+apiVersion: v1
+kind: Service
+metadata:
+  labels:
+    app: workclub-api
+    component: backend
+    environment: development
+  name: workclub-api
+  namespace: workclub-dev
+spec:
+  ports:
+  - name: http
+    port: 80
+    protocol: TCP
+    targetPort: 8080
+  selector:
+    app: workclub-api
+    environment: development
+  type: ClusterIP
+---
+apiVersion: v1
+kind: Service
+metadata:
+  labels:
+    app: workclub-frontend
+    component: frontend
+    environment: development
+  name: workclub-frontend
+  namespace: workclub-dev
+spec:
+  ports:
+  - name: http
+    port: 80
+    protocol: TCP
+    targetPort: 3000
+  selector:
+    app: workclub-frontend
+    environment: development
+  type: ClusterIP
+---
+apiVersion: v1
+kind: Service
+metadata:
+  labels:
+    app: workclub-keycloak
+    component: auth
+    environment: development
+  name: workclub-keycloak
+  namespace: workclub-dev
+spec:
+  ports:
+  - name: http
+    port: 80
+    protocol: TCP
+    targetPort: 8080
+  selector:
+    app: workclub-keycloak
+    environment: development
+  type: ClusterIP
+---
+apiVersion: v1
+kind: Service
+metadata:
+  labels:
+    app: workclub-postgres
+    component: database
+    environment: development
+  name: workclub-postgres
+  namespace: workclub-dev
+spec:
+  ports:
+  - name: postgresql
+    port: 5432
+    protocol: TCP
+    targetPort: 5432
+  selector:
+    app: workclub-postgres
+    environment: development
+  type: ClusterIP
+---
+apiVersion: v1
+kind: Service
+metadata:
+  labels:
+    app: workclub-postgres
+    component: database
+    environment: development
+  name: workclub-postgres-headless
+  namespace: workclub-dev
+spec:
+  clusterIP: None
+  ports:
+  - name: postgresql
+    port: 5432
+    protocol: TCP
+    targetPort: 5432
+  publishNotReadyAddresses: true
+  selector:
+    app: workclub-postgres
+    environment: development
+  type: ClusterIP
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  labels:
+    app: workclub-api
+    component: backend
+    environment: development
+  name: workclub-api
+  namespace: workclub-dev
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: workclub-api
+      environment: development
+  template:
+    metadata:
+      labels:
+        app: workclub-api
+        component: backend
+        environment: development
+    spec:
+      containers:
+      - env:
+        - name: ASPNETCORE_ENVIRONMENT
+          value: Development
+        - name: ASPNETCORE_URLS
+          value: http://+:8080
+        - name: ConnectionStrings__DefaultConnection
+          valueFrom:
+            secretKeyRef:
+              key: database-connection-string
+              name: workclub-secrets
+        - name: Keycloak__Url
+          valueFrom:
+            configMapKeyRef:
+              key: keycloak-url
+              name: workclub-config
+        image: workclub-api:dev
+        imagePullPolicy: IfNotPresent
+        livenessProbe:
+          failureThreshold: 3
+          httpGet:
+            path: /health/live
+            port: http
+          initialDelaySeconds: 10
+          periodSeconds: 15
+          timeoutSeconds: 5
+        name: api
+        ports:
+        - containerPort: 8080
+          name: http
+          protocol: TCP
+        readinessProbe:
+          failureThreshold: 2
+          httpGet:
+            path: /health/ready
+            port: http
+          initialDelaySeconds: 5
+          periodSeconds: 10
+          timeoutSeconds: 5
+        resources:
+          limits:
+            cpu: 200m
+            memory: 256Mi
+          requests:
+            cpu: 50m
+            memory: 128Mi
+        startupProbe:
+          failureThreshold: 30
+          httpGet:
+            path: /health/startup
+            port: http
+          initialDelaySeconds: 5
+          periodSeconds: 10
+          timeoutSeconds: 5
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  labels:
+    app: workclub-frontend
+    component: frontend
+    environment: development
+  name: workclub-frontend
+  namespace: workclub-dev
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: workclub-frontend
+      environment: development
+  template:
+    metadata:
+      labels:
+        app: workclub-frontend
+        component: frontend
+        environment: development
+    spec:
+      containers:
+      - env:
+        - name: NODE_ENV
+          value: production
+        - name: NEXT_PUBLIC_API_URL
+          valueFrom:
+            configMapKeyRef:
+              key: api-base-url
+              name: workclub-config
+        - name: NEXT_PUBLIC_KEYCLOAK_URL
+          valueFrom:
+            configMapKeyRef:
+              key: keycloak-url
+              name: workclub-config
+        image: workclub-frontend:dev
+        imagePullPolicy: IfNotPresent
+        livenessProbe:
+          failureThreshold: 3
+          httpGet:
+            path: /api/health
+            port: http
+          initialDelaySeconds: 10
+          periodSeconds: 15
+          timeoutSeconds: 5
+        name: frontend
+        ports:
+        - containerPort: 3000
+          name: http
+          protocol: TCP
+        readinessProbe:
+          failureThreshold: 2
+          httpGet:
+            path: /api/health
+            port: http
+          initialDelaySeconds: 5
+          periodSeconds: 10
+          timeoutSeconds: 5
+        resources:
+          limits:
+            cpu: 200m
+            memory: 256Mi
+          requests:
+            cpu: 50m
+            memory: 128Mi
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  labels:
+    app: workclub-keycloak
+    component: auth
+    environment: development
+  name: workclub-keycloak
+  namespace: workclub-dev
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: workclub-keycloak
+      environment: development
+  template:
+    metadata:
+      labels:
+        app: workclub-keycloak
+        component: auth
+        environment: development
+    spec:
+      containers:
+      - command:
+        - start
+        env:
+        - name: KC_DB
+          value: postgres
+        - name: KC_DB_URL_HOST
+          value: workclub-postgres
+        - name: KC_DB_URL_PORT
+          value: "5432"
+        - name: KC_DB_URL_DATABASE
+          value: keycloak
+        - name: KC_DB_USERNAME
+          value: keycloak
+        - name: KC_DB_PASSWORD
+          valueFrom:
+            secretKeyRef:
+              key: keycloak-db-password
+              name: workclub-secrets
+        - name: KEYCLOAK_ADMIN
+          value: admin
+        - name: KEYCLOAK_ADMIN_PASSWORD
+          valueFrom:
+            secretKeyRef:
+              key: keycloak-admin-password
+              name: workclub-secrets
+        - name: KC_HOSTNAME_STRICT
+          value: "false"
+        - name: KC_PROXY
+          value: edge
+        - name: KC_HTTP_ENABLED
+          value: "true"
+        image: quay.io/keycloak/keycloak:26.1
+        imagePullPolicy: IfNotPresent
+        livenessProbe:
+          failureThreshold: 3
+          httpGet:
+            path: /health/live
+            port: http
+          initialDelaySeconds: 20
+          periodSeconds: 15
+          timeoutSeconds: 5
+        name: keycloak
+        ports:
+        - containerPort: 8080
+          name: http
+          protocol: TCP
+        readinessProbe:
+          failureThreshold: 2
+          httpGet:
+            path: /health/ready
+            port: http
+          initialDelaySeconds: 10
+          periodSeconds: 10
+          timeoutSeconds: 5
+        resources:
+          limits:
+            cpu: 500m
+            memory: 512Mi
+          requests:
+            cpu: 100m
+            memory: 256Mi
+---
+apiVersion: apps/v1
+kind: StatefulSet
+metadata:
+  labels:
+    app: workclub-postgres
+    component: database
+    environment: development
+  name: workclub-postgres
+  namespace: workclub-dev
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: workclub-postgres
+      environment: development
+  serviceName: workclub-postgres-headless
+  template:
+    metadata:
+      labels:
+        app: workclub-postgres
+        component: database
+        environment: development
+    spec:
+      containers:
+      - env:
+        - name: POSTGRES_DB
+          value: workclub
+        - name: POSTGRES_USER
+          value: app
+        - name: POSTGRES_PASSWORD
+          valueFrom:
+            secretKeyRef:
+              key: postgres-password
+              name: workclub-secrets
+        image: postgres:16-alpine
+        imagePullPolicy: IfNotPresent
+        livenessProbe:
+          exec:
+            command:
+            - /bin/sh
+            - -c
+            - pg_isready -U app -d workclub
+          failureThreshold: 3
+          initialDelaySeconds: 10
+          periodSeconds: 15
+          timeoutSeconds: 5
+        name: postgres
+        ports:
+        - containerPort: 5432
+          name: postgresql
+          protocol: TCP
+        readinessProbe:
+          exec:
+            command:
+            - /bin/sh
+            - -c
+            - pg_isready -U app -d workclub
+          failureThreshold: 2
+          initialDelaySeconds: 5
+          periodSeconds: 10
+          timeoutSeconds: 5
+        resources:
+          limits:
+            cpu: 500m
+            memory: 512Mi
+          requests:
+            cpu: 100m
+            memory: 256Mi
+        volumeMounts:
+        - mountPath: /var/lib/postgresql/data
+          name: postgres-data
+          subPath: postgres
+        - mountPath: /docker-entrypoint-initdb.d
+          name: postgres-init
+      volumes:
+      - configMap:
+          items:
+          - key: init.sql
+            path: init.sql
+          name: postgres-init
+        name: postgres-init
+  volumeClaimTemplates:
+  - metadata:
+      labels:
+        environment: development
+      name: postgres-data
+    spec:
+      accessModes:
+      - ReadWriteOnce
+      resources:
+        requests:
+          storage: 10Gi
+      storageClassName: standard
+---
+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  labels:
+    app: workclub
+    environment: development
+  name: workclub-ingress
+  namespace: workclub-dev
+spec:
+  rules:
+  - host: localhost
+    http:
+      paths:
+      - backend:
+          service:
+            name: workclub-frontend
+            port:
+              number: 80
+        path: /
+        pathType: Prefix
+      - backend:
+          service:
+            name: workclub-api
+            port:
+              number: 80
+        path: /api
+        pathType: Prefix
diff --git a/.sisyphus/notepads/club-work-manager/learnings.md b/.sisyphus/notepads/club-work-manager/learnings.md
index 2b335af..102672a 100644
--- a/.sisyphus/notepads/club-work-manager/learnings.md
+++ b/.sisyphus/notepads/club-work-manager/learnings.md
@@ -1822,3 +1822,52 @@ docker run -p 3000:3000 workclub-frontend:dev
 curl http://localhost:3000   # Should return HTTP 200
 ```
 
+
+## [2026-03-03 Task 25] Kustomize Dev Overlay + Resource Limits + Health Checks
+
+### Files Created
+- `infra/k8s/overlays/dev/kustomization.yaml` - Dev overlay configuration
+- `infra/k8s/overlays/dev/patches/backend-resources.yaml` - Backend dev resource patch
+- `infra/k8s/overlays/dev/patches/frontend-resources.yaml` - Frontend dev resource patch
+- `frontend/src/app/api/health/route.ts` - Frontend health endpoint (was missing)
+
+### Key Decisions
+- **Resource Limits**: Dev overlay uses 50% of base resources:
+  - Requests: cpu=50m (vs base 100m), memory=128Mi (vs base 256Mi)
+  - Limits: cpu=200m (vs base 500m), memory=256Mi (vs base 512Mi)
+- **Image Tags**: Set to `dev` for workclub-api and workclub-frontend
+- **Namespace**: `workclub-dev` for isolation
+- **Replicas**: All deployments set to 1 for dev environment
+- **Frontend Health**: Created missing `/api/health` Next.js route handler
+
+### Patterns Established
+- **Strategic Merge Patches**: Target deployment by name, container name, then patch specific fields
+- **Kustomize Overlay Structure**: 
+  ```
+  overlays/dev/
+  ├── kustomization.yaml (references base, sets namespace, images, replicas, patches)
+  └── patches/ (strategic merge patches per service)
+  ```
+- **commonLabels**: Used `environment: development` label (deprecated warning but functional)
+
+### Issues Encountered
+1. **Missing kustomize**: Had to install via Homebrew (`brew install kustomize`)
+2. **Missing Frontend Health Endpoint**: `/api/health` declared in base manifest but route didn't exist
+   - Created `frontend/src/app/api/health/route.ts` with simple `{ status: 'ok' }` response
+3. **Deprecation Warning**: `commonLabels` is deprecated in favor of `labels` (non-blocking)
+
+### Verification Results
+✅ `kustomize build` succeeded (exit code 0)
+✅ All deployments have `replicas: 1`
+✅ Backend resources: cpu=50m-200m, memory=128Mi-256Mi
+✅ Frontend resources: cpu=50m-200m, memory=128Mi-256Mi
+✅ Image tags: `workclub-api:dev`, `workclub-frontend:dev`
+✅ Namespace: `workclub-dev` applied to all resources
+✅ Health check endpoints preserved: Backend `/health/*`, Frontend `/api/health`
+✅ Evidence saved: `.sisyphus/evidence/task-25-kustomize-dev.yaml` (495 lines)
+
+### Next Steps for Future Tasks
+- Consider creating production overlay with higher resources
+- May need to update `commonLabels` to `labels` to avoid deprecation warnings
+- Frontend health endpoint is minimal - could enhance with actual health checks
+
diff --git a/.sisyphus/plans/club-work-manager.md b/.sisyphus/plans/club-work-manager.md
index 6add7d2..782603d 100644
--- a/.sisyphus/plans/club-work-manager.md
+++ b/.sisyphus/plans/club-work-manager.md
@@ -2224,7 +2224,7 @@ Max Concurrent: 6 (Wave 1)
   - Files: `frontend/Dockerfile`, `frontend/Dockerfile.dev`
   - Pre-commit: `docker build -t test frontend/`
 
-- [ ] 25. Kustomize Dev Overlay + Resource Limits + Health Checks
+- [x] 25. Kustomize Dev Overlay + Resource Limits + Health Checks
 
   **What to do**:
   - Create `/infra/k8s/overlays/dev/kustomization.yaml`:
diff --git a/frontend/src/app/api/health/route.ts b/frontend/src/app/api/health/route.ts
new file mode 100644
index 0000000..68a734c
--- /dev/null
+++ b/frontend/src/app/api/health/route.ts
@@ -0,0 +1,3 @@
+export async function GET() {
+  return Response.json({ status: 'ok' }, { status: 200 });
+}
diff --git a/infra/k8s/overlays/dev/kustomization.yaml b/infra/k8s/overlays/dev/kustomization.yaml
new file mode 100644
index 0000000..4375f0b
--- /dev/null
+++ b/infra/k8s/overlays/dev/kustomization.yaml
@@ -0,0 +1,32 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+
+resources:
+  - ../../base
+
+namespace: workclub-dev
+
+commonLabels:
+  environment: development
+
+images:
+  - name: workclub-api
+    newTag: dev
+  - name: workclub-frontend
+    newTag: dev
+
+replicas:
+  - name: workclub-api
+    count: 1
+  - name: workclub-frontend
+    count: 1
+
+patches:
+  - path: patches/backend-resources.yaml
+    target:
+      kind: Deployment
+      name: workclub-api
+  - path: patches/frontend-resources.yaml
+    target:
+      kind: Deployment
+      name: workclub-frontend
diff --git a/infra/k8s/overlays/dev/patches/backend-resources.yaml b/infra/k8s/overlays/dev/patches/backend-resources.yaml
new file mode 100644
index 0000000..c969074
--- /dev/null
+++ b/infra/k8s/overlays/dev/patches/backend-resources.yaml
@@ -0,0 +1,16 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: workclub-api
+spec:
+  template:
+    spec:
+      containers:
+      - name: api
+        resources:
+          requests:
+            memory: "128Mi"
+            cpu: "50m"
+          limits:
+            memory: "256Mi"
+            cpu: "200m"
diff --git a/infra/k8s/overlays/dev/patches/frontend-resources.yaml b/infra/k8s/overlays/dev/patches/frontend-resources.yaml
new file mode 100644
index 0000000..01bccc1
--- /dev/null
+++ b/infra/k8s/overlays/dev/patches/frontend-resources.yaml
@@ -0,0 +1,16 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: workclub-frontend
+spec:
+  template:
+    spec:
+      containers:
+      - name: frontend
+        resources:
+          requests:
+            memory: "128Mi"
+            cpu: "50m"
+          limits:
+            memory: "256Mi"
+            cpu: "200m"