maybe like that?

apps/todos/values.yaml

@@ -1,3 +1,4 @@
+
 ######################
 # VIKUNJA COMPONENTS #
 ######################
@@ -9,18 +10,15 @@ api:
     # the chart create a new PVC for you or provide an existing one.
     data:
       enabled: true
-      existingClaim: todos-nfs
+      existingClaim: todos-data
+      accessMode: ReadWriteOnce
+      size: 10Gi
+      mountPath: /app/vikunja/files
+
   ingress:
     main:
       enabled: false
-      # annotations:
-      #   # proxy-body-size is set to 0 to remove the body limit on file uploads
-      #   nginx.ingress.kubernetes.io/proxy-body-size: "0"
-      # hosts:
-      #   - host: vikunja.local
-      #     paths:
-      #       - path: "/api/v1"
-      # tls: []
+
   configMaps:
     # The configuration for Vikunja's api.
     # https://vikunja.io/docs/config-options/
@@ -28,45 +26,23 @@ api:
       enabled: true
       data:
         config.yml: |
-          # Vikunja needs to know the frontend URL for password reset emails.
-          # So you might need to provide its value, if you're not using an ingress.
-          # service:
-            frontendUrl: https://todos.kluster.moll.re
+          service:
+              frontendUrl: https://todos.kluster.moll.re
           database:
             type: sqlite
-            # The path to the database file.
-            # This is the default value, you can change it if you want to.
-            # sqlite:
             path: /app/vikunja/files/vikunja.db
           registration: false
-  env:
+  env: {}
 
 frontend:
   enabled: true
-  # You can add any of the top-level keys in the common chart's `values.yaml` to override them here.
-
-  # https://github.com/bjw-s/helm-charts/blob/a081de53024d8328d1ae9ff7e4f6bc500b0f3a29/charts/library/common/values.yaml#L393-L436
   ingress:
     main:
       enabled: false
-      # annotations:
-      #   # proxy-body-size is set to 0 to remove the body limit on file uploads
-      #   nginx.ingress.kubernetes.io/proxy-body-size: "0"
-      # hosts:
-      #   # This is just an example. You should change this to your own domain.
-      #   - host: vikunja.local
-      #     paths:
-      #       - path: "/"
-      # tls: []
-  # You only need to provide the URL to the API as environment variable here if you deviate from the "built-in" ingress in the api section.
-  env:
-   VIKUNJA_API_URL: "todos-api:3456"
 
 postgresql:
   enabled: false
-
 redis:
   enabled: false
-
 typesense:
   enabled: false