feat: initial tictactoe web app with CI/CD pipeline

- Express app serving vanilla JS 2-player TicTacToe game
- Dockerfile (multi-stage node:18-slim)
- Jenkinsfile (K8s pod: test → Harbor push → Helm bump → Gitea push)
- Helm chart v1.0.0 with HTTPRoute for tictactoe.fireflylab.local

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

manifest/helm/Chart.yaml

@@ -0,0 +1,6 @@
+apiVersion: v2
+name: tictactoe
+description: TicTacToe web game
+type: application
+version: 1.0.0
+appVersion: "latest"

manifest/helm/templates/deployment.yaml

@@ -0,0 +1,35 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ .Chart.Name }}
+  namespace: {{ .Release.Namespace }}
+  labels:
+    app: {{ .Chart.Name }}
+spec:
+  replicas: {{ .Values.replicaCount }}
+  selector:
+    matchLabels:
+      app: {{ .Chart.Name }}
+  template:
+    metadata:
+      labels:
+        app: {{ .Chart.Name }}
+    spec:
+      containers:
+      - name: {{ .Chart.Name }}
+        image: "{{ .Values.image.repository }}:{{ .Values.image.tag }}"
+        imagePullPolicy: {{ .Values.image.pullPolicy }}
+        ports:
+        - containerPort: {{ .Values.service.targetPort }}
+        livenessProbe:
+          httpGet:
+            path: /health
+            port: {{ .Values.service.targetPort }}
+          initialDelaySeconds: 10
+          periodSeconds: 10
+        readinessProbe:
+          httpGet:
+            path: /health
+            port: {{ .Values.service.targetPort }}
+          initialDelaySeconds: 5
+          periodSeconds: 5

manifest/helm/templates/httproute.yaml

@@ -0,0 +1,19 @@
+apiVersion: gateway.networking.k8s.io/v1
+kind: HTTPRoute
+metadata:
+  name: {{ .Chart.Name }}
+  namespace: {{ .Release.Namespace }}
+spec:
+  parentRefs:
+  - name: envoy-gateway
+    namespace: envoy-gateway-system
+  hostnames:
+  - "tictactoe.fireflylab.local"
+  rules:
+  - matches:
+    - path:
+        type: PathPrefix
+        value: /
+    backendRefs:
+    - name: {{ .Chart.Name }}
+      port: {{ .Values.service.port }}

manifest/helm/templates/service.yaml

@@ -0,0 +1,14 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ .Chart.Name }}
+  namespace: {{ .Release.Namespace }}
+  labels:
+    app: {{ .Chart.Name }}
+spec:
+  selector:
+    app: {{ .Chart.Name }}
+  ports:
+  - port: {{ .Values.service.port }}
+    targetPort: {{ .Values.service.targetPort }}
+    protocol: TCP

manifest/helm/values.yaml

@@ -0,0 +1,10 @@
+image:
+  repository: harbor.fireflylab.local/library/tictactoe
+  tag: latest
+  pullPolicy: IfNotPresent
+
+replicaCount: 1
+
+service:
+  port: 80
+  targetPort: 3000