Callbacks service docs updated

interface/api/verification/response/verification.yaml

@@ -1,6 +1,7 @@
 components:
   schemas:
     VerificationResponseData:
+      description: Response data returned after requesting a verification code.
       type: object
       additionalProperties: false
       required:
@@ -10,17 +11,22 @@ components:
         - target
       properties:
         idempotencyKey:
+          description: Idempotency key associated with the verification request.
           type: string
         ttl_seconds:
+          description: Verification code validity period in seconds.
           type: integer
           format: int32
         cooldown_seconds:
+          description: Cooldown period before another code can be requested.
           type: integer
           format: int32
         target:
+          description: Destination where the verification code was sent.
           type: string
 
     VerifyResultData:
+      description: Result payload returned after code verification succeeds.
       oneOf:
         - $ref: ../../accounts/response/auth.yaml#/components/schemas/LoginData
         - $ref: ../../response/response.yaml#/components/schemas/SuccessResultData