CHORE(app): reduce resource limits

- CPU limit: 800m → 100m (prod), 560m → 80m (dev)
- Memory limit: 230Mi → 150Mi (prod), 161Mi → 120Mi (dev)
- ResourceQuota adjusted accordingly

Actual usage: ~8m CPU, ~111Mi memory

deploy/k8s/overlays/dev/deployment-patch.yaml

@@ -12,8 +12,8 @@ spec:
         - name: portfolio-app
           resources:
             requests:
-              memory: "84Mi"
-              cpu: "140m"
+              memory: "50Mi"
+              cpu: "30m"
             limits:
-              memory: "161Mi"
-              cpu: "560m"
+              memory: "120Mi"
+              cpu: "80m"

deploy/k8s/overlays/dev/kustomization.yaml

@@ -14,7 +14,7 @@ commonLabels:
 # 이미지 태그 설정
 images:
   - name: ghcr.io/mayne0213/portfolio
-    newTag: develop-sha-29f4196ac9055c827c043f4895fe9cfee9686f20
+    newTag: develop-sha-dec40a689afe2d2532da09dcc3089c6d2e17c470
 
 patchesStrategicMerge:
   - deployment-patch.yaml

deploy/k8s/overlays/dev/resourcequota.yaml

@@ -5,8 +5,8 @@ metadata:
   namespace: portfolio-dev
 spec:
   hard:
-    requests.memory: "525Mi"
-    requests.cpu: "840m"
-    limits.memory: "840Mi"
-    limits.cpu: "1680m"
+    requests.memory: "200Mi"
+    requests.cpu: "100m"
+    limits.memory: "400Mi"
+    limits.cpu: "200m"
     pods: "6"