Do not "execute" workspaces with no executor.

lynxkite-app/src/lynxkite_app/crdt.py

@@ -264,6 +264,8 @@ async def execute(name: str, ws_crdt: pycrdt.Map, ws_pyd: workspace.Workspace, d
     assert path.is_relative_to(cwd), "Provided workspace path is invalid"
     # Save user changes before executing, in case the execution fails.
     workspace.save(ws_pyd, path)
+    if not workspace.has_executor(ws_pyd):
+        return
     ops.load_user_scripts(name)
     ws_pyd._crdt = ws_crdt
     with ws_crdt.doc.transaction():

lynxkite-core/src/lynxkite/core/workspace.py

@@ -119,9 +119,12 @@ class Workspace(BaseConfig):
         return self.model_copy(update={"edges": edges})
 
 
+def has_executor(ws: Workspace):
+    return ws.env in ops.EXECUTORS
+
+
 async def execute(ws: Workspace):
-    if ws.env in ops.EXECUTORS:
-        await ops.EXECUTORS[ws.env](ws)
+    await ops.EXECUTORS[ws.env](ws)
 
 
 def save(ws: Workspace, path: str):