add source code and readme

manifests/applications/picsur/storage.yaml

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+apiVersion: v1
+kind: PersistentVolumeClaim
+metadata:
+  name: picsur-data
+  namespace: picsur-system
+  labels:
+    # Enable S3 backup with correct Longhorn labels (daily + weekly)
+    recurring-job.longhorn.io/source: "enabled"
+    recurring-job-group.longhorn.io/longhorn-s3-backup: "enabled"
+    recurring-job-group.longhorn.io/longhorn-s3-backup-weekly: "enabled"
+spec:
+  accessModes:
+    - ReadWriteMany  # ReadWriteMany allows horizontal scaling of Picsur pods
+  storageClassName: longhorn-retain
+  resources:
+    requests:
+      storage: 20Gi  # Adjust based on expected image storage needs