feat: migrate to S3 storage with automatic download and timestamped filenames

- Replace local file storage with S3-compatible object storage

- Add automatic PDF download after generation

- Include timestamps in filenames to ensure uniqueness

- Remove unused static volume from Kubernetes deployment

- Update ConfigMap to remove unused variables and add S3 configuration

- Configure S3 credentials via Kubernetes secrets for both dev and prod environments

- Add boto3 dependency for S3 integration

deploy/overlays/development/deployment-patch.yaml

@@ -16,6 +16,10 @@ spec:
           value: development
         - name: DEBUG
           value: "false"
+        # Environment variables from S3 credentials secret
+        envFrom:
+        - secretRef:
+            name: s3-credentials
         # Reduce resource consumption in development
         resources:
           requests:

deploy/overlays/development/kustomization.yaml

@@ -17,4 +17,9 @@ images:
 # Development-specific labels
 commonLabels:
   environment: development
-  security-level: standard
+  security-level: standard
+
+secretGenerator:
+  - name: s3-credentials
+    envs:
+      - s3-credentials.env