schema drift: driftedDatasetIds in pipeline-listing and pipeline

reference/public-http-api.yaml

@@ -586,12 +586,21 @@ paths:
                   value:
                     - id: '1'
                       name: Ecommerce
+                      driftedDatasets: []
                     - id: '2'
                       name: Internal
+                      driftedDatasets:
+                        - datasetId: 'ds-42'
+                          driftedAt: '2026-04-10T12:00:00Z'
+                          offset:
+                            type: num
+                            value: 150
                     - id: '3'
                       name: Staging environment
+                      driftedDatasets: []
                     - id: '4'
                       name: Test environment
+                      driftedDatasets: []
         '401':
           description: Unauthorized
       operationId: get-pipelines
@@ -686,6 +695,7 @@ paths:
                     name: Ecommerce
                     columnNameStrategy:
                       tableNamePostfix: true
+                    driftedDatasets: []
         '401':
           description: Unauthorized
         '404':
@@ -1821,6 +1831,12 @@ components:
         name:
           type: string
           minLength: 1
+        driftedDatasets:
+          type: array
+          readOnly: true
+          description: Enriched drift information for each dataset within this pipeline that has drifted from its initial schema.
+          items:
+            $ref: '#/components/schemas/drifted-dataset'
       required:
         - id
         - name
@@ -1846,10 +1862,48 @@ components:
           properties:
             tableNamePostfix:
               type: boolean
+        driftedDatasets:
+          type: array
+          readOnly: true
+          description: Enriched drift information for each dataset within this pipeline that has drifted from its initial schema.
+          items:
+            $ref: '#/components/schemas/drifted-dataset'
       required:
         - id
         - name
         - destinationId
+    drifted-dataset:
+      title: ''
+      type: object
+      description: Drift information for a single dataset.
+      properties:
+        datasetId:
+          type: string
+          description: The ID of the drifted dataset.
+        driftedAt:
+          type: string
+          format: date-time
+          description: When the schema drift was detected.
+        offset:
+          type: object
+          nullable: true
+          description: The offset at which schema drift was detected.
+          properties:
+            type:
+              type: string
+              enum:
+                - num
+                - str
+            value:
+              oneOf:
+                - type: number
+                - type: string
+          required:
+            - type
+            - value
+      required:
+        - datasetId
+        - driftedAt
     simple-pipeline-metric:
       type: object
       properties: