feat: add .gitignore and apps/template for new apps

apps/template/manifests/app-deployment.yaml

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+# Deployment 範本
+# 使用方式：複製此檔案，將 {{APP_NAME}} 替換為你的應用名稱
+
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{APP_NAME}}
+  namespace: default
+  labels:
+    app: {{APP_NAME}}
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: {{APP_NAME}}
+  template:
+    metadata:
+      labels:
+        app: {{APP_NAME}}
+    spec:
+      containers:
+        - name: {{APP_NAME}}
+          image: {{IMAGE}}:{{TAG|latest}}
+          imagePullPolicy: IfNotPresent
+          ports:
+            - name: http
+              containerPort: {{PORT|8080}}
+          # 資源限制（建議設定）
+          resources:
+            limits:
+              memory: "512Mi"
+              cpu: "500m"
+            requests:
+              memory: "256Mi"
+              cpu: "250m"
+          # 健康檢查（可選）
+          livenessProbe:
+            httpGet:
+              path: /
+              port: http
+            initialDelaySeconds: 30
+            periodSeconds: 10
+          readinessProbe:
+            httpGet:
+              path: /
+              port: http
+            initialDelaySeconds: 5
+            periodSeconds: 10
+          volumeMounts:
+            - name: data-vol
+              mountPath: {{DATA_MOUNT_PATH|/data}}
+      volumes:
+        - name: data-vol
+          persistentVolumeClaim:
+            claimName: {{APP_NAME}}-pvc

apps/template/manifests/app-ingress.yaml

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+# Ingress 範本 - Traefik
+# 使用方式：將 {{APP_NAME}}、{{HOST}} 替換為實際值
+
+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  name: {{APP_NAME}}-ingress
+  labels:
+    app: {{APP_NAME}}
+  annotations:
+    traefik.ingress.kubernetes.io/router.entrypoints: web, websecure
+spec:
+  ingressClassName: traefik
+  rules:
+    - host: {{HOST}}
+      http:
+        paths:
+          - path: /
+            pathType: Prefix
+            backend:
+              service:
+                name: {{APP_NAME}}-service
+                port:
+                  number: {{PORT|8080}}

apps/template/manifests/app-pvc.yaml

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+# PVC 範本 - Longhorn 儲存
+# 使用方式：將 {{APP_NAME}} 替換為你的應用名稱
+# 儲存大小可調整：1Gi, 5Gi, 10Gi...
+
+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: {{APP_NAME}}-pvc
+  namespace: default
+spec:
+  accessModes:
+    - ReadWriteOnce
+  storageClassName: longhorn
+  resources:
+    requests:
+      storage: {{SIZE|5Gi}}

apps/template/manifests/app-service.yaml

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+# Service 範本
+# 使用方式：將 {{APP_NAME}}、{{PORT}} 替換為實際值
+
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{APP_NAME}}-service
+  namespace: default
+  labels:
+    app: {{APP_NAME}}
+spec:
+  type: ClusterIP
+  selector:
+    app: {{APP_NAME}}
+  ports:
+    - name: http
+      port: 80
+      targetPort: {{PORT|8080}