Bootstrap copied BFF and local accounts with public Sendico contracts (#34)

backend/contracts/sendico/models/account/account.yaml

@@ -0,0 +1,15 @@
+components:
+  schemas:
+    AccountData:
+      description: Extended account payload including visibility-specific metadata.
+      allOf:
+        - $ref: ./account_public.yaml#/components/schemas/AccountPublic
+        - type: object
+          description: Account attributes that are not part of the public profile.
+          additionalProperties: false
+          required:
+            - isAnonymous
+          properties:
+            isAnonymous:
+              description: Indicates whether the account is marked as anonymous.
+              type: boolean

backend/contracts/sendico/models/account/account_public.yaml

@@ -0,0 +1,33 @@
+components:
+  schemas:
+    AccountPublic:
+      description: Public account profile data exposed in API responses.
+      allOf:
+        - $ref: ../storable.yaml#/components/schemas/Storable
+        - $ref: ../common/describable.yaml#/components/schemas/Describable
+        - type: object
+          description: Account-specific public attributes.
+          additionalProperties: false
+          required:
+            - login
+            - locale
+            - lastName
+            - isArchived
+          properties:
+            login:
+              description: Account login identifier represented as an email address.
+              type: string
+              format: email
+            locale:
+              description: Preferred locale used for account-facing content.
+              type: string
+            lastName:
+              description: Account holder last name.
+              type: string
+            avatarUrl:
+              description: Optional URL of the account avatar image.
+              type: string
+              nullable: true
+            isArchived:
+              description: Indicates whether the account is archived and inactive.
+              type: boolean