feat: Configure production deployment with math-tables namespace and ingress

Changes made:

- Remove problematic configuration-snippet from base ingress

- Add namespace creation for math-tables

- Configure ingress with nginx class and letsencrypt-prod issuer

- Set production hostname to math-tables.cl1.parano.ch

- Reduce production replicas to 1

- Update copyright year in index.html

deploy/overlays/development/deployment-patch.yaml

@@ -0,0 +1,26 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: math-exercises-app
+  annotations:
+    # Development environment annotation
+    environment: development
+spec:
+  replicas: 1
+  template:
+    spec:
+      containers:
+      - name: math-exercises
+        env:
+        - name: ENVIRONMENT
+          value: development
+        - name: DEBUG
+          value: "false"
+        # Reduce resource consumption in development
+        resources:
+          requests:
+            memory: "32Mi"
+            cpu: "100m"
+          limits:
+            memory: "64Mi"
+            cpu: "200m"

deploy/overlays/development/kustomization.yaml

@@ -0,0 +1,20 @@
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
+
+resources:
+- ../../base
+
+# Development-specific patches
+patchesStrategicMerge:
+- deployment-patch.yaml
+
+# Development-specific configurations
+images:
+- name: math-exercises
+  newName: math-exercises
+  newTag: dev-latest
+
+# Development-specific labels
+commonLabels:
+  environment: development
+  security-level: standard