feat: add draft delete command

docs/current_roadmap.md

@@ -33,9 +33,9 @@ clear operator feedback before adding more architecture.
   [`2026-06-09 product smoke RPC CLI`](superpowers/research/2026-06-09-product-smoke-rpc-cli.md).
 - Completed: `wf artifact inspect` now accepts `--version` as an alias for the
   positional version argument.
-- Next product cleanup: expose existing draft workspace deletion as safe
-  `wf draft delete <workspace_id> --confirm`. Active plan:
-  [`wf draft delete CLI/RPC`](superpowers/plans/2026-06-09-wf-draft-delete-cli-rpc.md).
+- Completed: `wf draft delete <workspace_id> --confirm` exposes existing draft
+  workspace deletion as a safe CLI command. Implementation:
+  [`wf draft delete CLI/RPC`](historical/superpowers/plans/2026-06-09-wf-draft-delete-cli-rpc.md).
 - Separate cleanup: design artifact deletion before exposing a command.
   Deployments live in the artifact store and can reference artifact versions, so
   `wf artifact delete <artifact_id> <version> --confirm` must reject referenced

docs/wf_cli.md

@@ -206,6 +206,15 @@ Validate:
 wf draft validate concat_ws
 ```
 
+Delete a draft workspace:
+
+```bash
+wf draft delete concat_ws --confirm
+```
+
+Draft deletion removes only the draft workspace. It does not delete artifacts,
+deployments, or runs.
+
 Save as an artifact:
 
 ```bash

src/wf_api/surface.py

@@ -82,6 +82,12 @@ class WorkflowDraftSurface(Protocol):
         workspace_id: str,
     ) -> dict[str, Any]: ...
 
+    async def delete_draft_workspace(
+        self,
+        *,
+        workspace_id: str,
+    ) -> dict[str, Any]: ...
+
     async def create_artifact_from_workspace(
         self,
         *,

src/wf_cli/commands/drafts.py

@@ -133,6 +133,30 @@ def validate_draft(
     )
 
 
+@app.command("delete")
+def delete_draft(
+    ctx: typer.Context,
+    workspace_id: Annotated[str, typer.Argument(help="Draft workspace id.")],
+    confirm: Annotated[
+        bool,
+        typer.Option(
+            "--confirm",
+            help="Required confirmation for deleting a draft workspace.",
+        ),
+    ] = False,
+) -> None:
+    """Delete a stored draft workspace."""
+    if not confirm:
+        raise typer.BadParameter("pass --confirm to delete a draft workspace")
+    context = load_cli_context(ctx)
+    emit_json(
+        run_cli_operation(
+            context,
+            context.handlers.delete_draft_workspace(workspace_id=workspace_id),
+        )
+    )
+
+
 @app.command("save")
 def save_draft(
     ctx: typer.Context,

src/wf_transport_rpc_http/client/drafts.py

@@ -79,6 +79,16 @@ class RpcDraftClientMixin:
             {"workspace_id": workspace_id},
         )
 
+    async def delete_draft_workspace(
+        self: RpcCaller,
+        *,
+        workspace_id: str,
+    ) -> dict[str, Any]:
+        return await self._call(
+            "workflow.draft_workspaces.delete",
+            {"workspace_id": workspace_id},
+        )
+
     async def create_artifact_from_workspace(
         self: RpcCaller,
         *,

src/wf_transport_rpc_http/methods/drafts.py

@@ -11,6 +11,7 @@ from ..models import (
     CreateArtifactFromWorkspaceParams,
     CreateDraftFromCapabilityParams,
     CreateWrapperFromWorkspaceParams,
+    DeleteDraftWorkspaceParams,
     GetDraftWorkspaceParams,
     ListDraftWorkspacesParams,
     PatchDraftParams,
@@ -117,6 +118,19 @@ def register_methods(
         except (ValueError, KeyError, LookupError, FileNotFoundError) as exc:
             raise_workflow_rpc_error(exc)
 
+    @entrypoint.method(
+        name="workflow.draft_workspaces.delete", errors=[WorkflowRpcError]
+    )
+    async def workflow_draft_workspaces_delete(
+        params: DeleteDraftWorkspaceParams = RpcParams(),
+    ) -> dict[str, Any]:
+        try:
+            return await server.api.delete_draft_workspace(
+                workspace_id=params.workspace_id,
+            )
+        except (ValueError, KeyError, LookupError, FileNotFoundError) as exc:
+            raise_workflow_rpc_error(exc)
+
     @entrypoint.method(
         name="workflow.draft_workspaces.create_artifact", errors=[WorkflowRpcError]
     )

src/wf_transport_rpc_http/models.py

@@ -111,6 +111,10 @@ class ValidateDraftWorkspaceParams(RpcParamsModel):
     workspace_id: str = Field(min_length=1)
 
 
+class DeleteDraftWorkspaceParams(RpcParamsModel):
+    workspace_id: str = Field(min_length=1)
+
+
 class CreateArtifactFromWorkspaceParams(RpcParamsModel):
     workspace_id: str = Field(min_length=1)
     artifact_id: str = Field(min_length=1)

tests/wf_cli/test_remote_target.py

@@ -705,3 +705,46 @@ def test_wf_status_reports_rpc_config_target(monkeypatch, tmp_path) -> None:
     assert payload["target"]["mode"] == "remote"
     assert payload["target"]["url"] == "http://test/rpc"
     assert payload["workflow"]["capability_count"] >= 1
+
+
+def test_wf_draft_delete_requires_confirm(monkeypatch, tmp_path) -> None:
+    server = build_local_static_workflow_server(tmp_path / "store")
+    _patch_rpc_client_to_server(monkeypatch, server)
+    config_path = tmp_path / "wf.json"
+    config_path.write_text('{"version": 1}', encoding="utf-8")
+    runner = CliRunner()
+    base_args = ["--config", str(config_path), "--url", "http://test/rpc"]
+
+    result = runner.invoke(app, [*base_args, "draft", "delete", "delete-me"])
+
+    assert result.exit_code != 0
+    assert "confirm" in (result.output).lower()
+
+
+def test_wf_draft_delete_succeeds_with_confirm(monkeypatch, tmp_path) -> None:
+    server = build_local_static_workflow_server(tmp_path / "store")
+    _patch_rpc_client_to_server(monkeypatch, server)
+    config_path = tmp_path / "wf.json"
+    config_path.write_text('{"version": 1}', encoding="utf-8")
+    runner = CliRunner()
+    base_args = ["--config", str(config_path), "--url", "http://test/rpc"]
+
+    runner.invoke(
+        app,
+        [
+            *base_args,
+            "draft",
+            "create-from-capability",
+            "delete-me",
+            "wf.std.constant",
+            "--name",
+            "delete_me_ws",
+        ],
+    )
+
+    result = runner.invoke(app, [*base_args, "draft", "delete", "delete-me", "--confirm"])
+
+    assert result.exit_code == 0, result.output
+    payload = json.loads(result.output)
+    assert payload["workspace_id"] == "delete-me"
+    assert payload["deleted"] is True

tests/wf_transport_rpc_http/test_app.py

@@ -313,6 +313,29 @@ async def test_rpc_draft_workspace_methods(tmp_path) -> None:
     assert artifact["result"]["artifact_id"] == "remote_artifact"
 
 
+async def test_rpc_draft_workspace_delete(tmp_path) -> None:
+    server = build_local_static_workflow_server(tmp_path / "store")
+    app = create_rpc_app(server)
+    transport = httpx.ASGITransport(app=app)
+    async with httpx.AsyncClient(transport=transport, base_url="http://test") as client:
+        await _rpc(
+            client,
+            "workflow.draft_workspaces.create_from_capability",
+            {
+                "workspace_id": "delete-me",
+                "capability_name": "wf.std.constant",
+                "name": "delete_me_ws",
+            },
+        )
+        payload = await _rpc(
+            client,
+            "workflow.draft_workspaces.delete",
+            {"workspace_id": "delete-me"},
+        )
+        assert payload["result"]["workspace_id"] == "delete-me"
+        assert payload["result"]["deleted"] is True
+
+
 def _constant_plan() -> RawWorkflowPlan:
     return RawWorkflowPlan.model_validate(
         {

tests/wf_transport_rpc_http/test_client.py

@@ -3,6 +3,7 @@ from __future__ import annotations
 import httpx
 
 from wf_api.models import RawWorkflowPlan, TraceRange
+from wf_api.surface import WorkflowDraftSurface
 from wf_core import END
 from wf_server import build_local_static_workflow_server
 from wf_transport_rpc_http import RpcWorkflowApiClient, create_rpc_app
@@ -317,3 +318,31 @@ async def test_rpc_workflow_client_draft_workspace_lifecycle(tmp_path) -> None:
     assert validated["status"] in {"valid", "invalid"}
     assert patched["revision"] == created["revision"] + 1
     assert artifact["artifact_id"] == "client_ws_art"
+
+
+def test_rpc_client_satisfies_draft_surface_static_shape() -> None:
+    _: type[WorkflowDraftSurface] = RpcWorkflowApiClient
+
+
+async def test_rpc_workflow_client_deletes_draft_workspace(tmp_path) -> None:
+    server = build_local_static_workflow_server(tmp_path / "store")
+    app = create_rpc_app(server)
+    transport = httpx.ASGITransport(app=app)
+    async with httpx.AsyncClient(
+        transport=transport, base_url="http://test"
+    ) as http_client:
+        client = RpcWorkflowApiClient(
+            url="http://test/rpc", timeout_seconds=5, http_client=http_client
+        )
+        await client.create_draft_workspace_from_capability(
+            workspace_id="delete-me",
+            capability_name="wf.std.constant",
+            name="delete_me_ws",
+        )
+        deleted = await client.delete_draft_workspace(workspace_id="delete-me")
+        assert deleted["workspace_id"] == "delete-me"
+        assert deleted["deleted"] is True
+
+        deleted_again = await client.delete_draft_workspace(workspace_id="delete-me")
+        assert deleted_again["workspace_id"] == "delete-me"
+        assert deleted_again["deleted"] is False