feat: add workflow output draft command

src/wf_mcp/workflow_surface/models.py

@@ -243,6 +243,21 @@ class SetStepOutputMapRequest(BaseModel):
     )
 
 
+class SetWorkflowOutputMapRequest(BaseModel):
+    """Typed MCP request for replacing or merging workflow output projection."""
+
+    workspace_id: WorkspaceId
+    revision: int = Field(ge=1, description="Expected current workspace revision.")
+    output_map: DraftPathMap
+    merge: bool = Field(
+        default=False,
+        description=(
+            "When false, replace the full workflow output map. When true, "
+            "preserve existing bindings and add/update only output_map entries."
+        ),
+    )
+
+
 class BindDraftRequest(BaseModel):
     """Typed MCP request for binding one draft step path with schema projection."""
 

src/wf_mcp/workflow_surface/tools.py

@@ -37,6 +37,7 @@ from .models import (
     SetDraftRouteRequest,
     SetStepInputMapRequest,
     SetStepOutputMapRequest,
+    SetWorkflowOutputMapRequest,
     TraceRange,
     ValidateDeploymentResult,
     ValidateDraftWorkspaceRequest,
@@ -463,6 +464,27 @@ def register_workflow_tools(server: FastMCP[Any], service: WfMcpService) -> None
             )
         )
 
+    @server.tool(
+        name="wf.workflow.set_workflow_output_map",
+        title="Set Workflow Output Map",
+        description=(
+            "Replace or merge the top-level workflow output projection. "
+            "Map graph source paths such as state.markdown to public output "
+            "fields such as markdown."
+        ),
+    )
+    async def set_workflow_output_map(
+        request: SetWorkflowOutputMapRequest,
+    ) -> DraftWorkspaceResult:
+        return DraftWorkspaceResult.model_validate(
+            await handlers.set_workflow_output_map(
+                workspace_id=request.workspace_id,
+                revision=request.revision,
+                output_map=request.output_map,
+                merge=request.merge,
+            )
+        )
+
     @server.tool(
         name="wf.workflow.bind",
         title="Bind Draft",