docs: add Apiary documentation for batch delete workspace objects endpoint

Documents POST /v2/storage/workspaces/{workspace_id}/objects/batch-delete
and the development branch variant for DMD-904.

Refs: DMD-904

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: jirkasemmler

apiary.apib

@@ -6041,6 +6041,114 @@ Returns a list of objects (tables and views) present in the workspace schema in
     Returned when the workspace backend is not supported.
 
 
+## Batch Delete Workspace Objects [/v2/storage/workspaces/{workspace_id}/objects/batch-delete]
+
+### Batch Delete Workspace Objects [POST]
+
+Deletes multiple tables and views from a workspace in a single async operation. Returns a job. All objects are attempted even if some fail, but the job will be marked as failed if any deletion fails.
+
++ Parameters
+    + workspace_id (required, number) - Workspace ID
+
++ Request (application/json)
+    + Headers
+
+            X-StorageApi-Token: your_token
+
+    + Body
+
+            {
+                "objects": ["MY_TABLE", "MY_VIEW"]
+            }
+
++ Response 202 (application/json)
+
+    + Body
+
+            {
+                "id": 12345,
+                "status": "waiting",
+                "url": "https://connection.keboola.com/v2/storage/jobs/12345",
+                "operationName": "workspaceBatchDeleteObjects",
+                "operationParams": {
+                    "params": {
+                        "objects": ["MY_TABLE", "MY_VIEW"]
+                    }
+                },
+                "createdTime": "2013-05-31T16:11:05+0200",
+                "startTime": null,
+                "endTime": null,
+                "runId": null,
+                "results": null,
+                "creatorToken": {
+                    "id": "27978",
+                    "description": "user@keboola.com"
+                }
+            }
+
++ Response 404 (application/json)
+
+    Returned when the workspace is not found.
+
++ Response 422 (application/json)
+
+    Returned when the request body is invalid (e.g. empty objects list).
+
+## Batch Delete Development Branch Workspace Objects [/v2/storage/branch/{branch_id}/workspaces/{workspace_id}/objects/batch-delete]
+
+### Batch Delete Development Branch Workspace Objects [POST]
+
+Deletes multiple tables and views from a workspace in a [Development Branch](#reference/development-branches) in a single async operation. Returns a job. All objects are attempted even if some fail, but the job will be marked as failed if any deletion fails.
+
++ Parameters
+    + branch_id (required) - Id of the development branch
+    + workspace_id (required, number) - Workspace ID
+
++ Request (application/json)
+    + Headers
+
+            X-StorageApi-Token: your_token
+
+    + Body
+
+            {
+                "objects": ["MY_TABLE", "MY_VIEW"]
+            }
+
++ Response 202 (application/json)
+
+    + Body
+
+            {
+                "id": 12345,
+                "status": "waiting",
+                "url": "https://connection.keboola.com/v2/storage/jobs/12345",
+                "operationName": "workspaceBatchDeleteObjects",
+                "operationParams": {
+                    "params": {
+                        "objects": ["MY_TABLE", "MY_VIEW"]
+                    }
+                },
+                "createdTime": "2013-05-31T16:11:05+0200",
+                "startTime": null,
+                "endTime": null,
+                "runId": null,
+                "results": null,
+                "creatorToken": {
+                    "id": "27978",
+                    "description": "user@keboola.com"
+                }
+            }
+
++ Response 404 (application/json)
+
+    Returned when the workspace is not found.
+
++ Response 422 (application/json)
+
+    Returned when the request body is invalid (e.g. empty objects list).
+
+
 ## Data Structures
 
 ### Workspace