Floating monitor: magnet docking and admin memory actions

The magnet docks the monitor bottom-right: beside the minimap in the graph,
in the corner of the App view; dragging undocks it. Admins get Unload models
and Free models & cache. /free now needs admin.

tests/python/helpers.py

@@ -122,6 +122,7 @@ def comfy_routes(user_root, queue=None):
         table.route("*", prefix + "/prompt")(prompt)
         table.post(prefix + "/queue")(queue_route)
         table.post(prefix + "/interrupt")(ok)
+        table.post(prefix + "/free")(ok)
         table.route("*", prefix + "/manager/{tail:.*}")(ok)
         table.route("*", prefix + "/customnode/{tail:.*}")(ok)
     return table

tests/python/test_server.py

@@ -592,3 +592,14 @@ def test_manager_tab_option(run):
             assert (await sock.until("server"))["server"]["manager_tab"] is True
             await sock.close()
     run(scenario())
+
+
+def test_freeing_memory_is_admin_only(run):
+    async def scenario():
+        async with rig_server() as rig:
+            admin = await rig.setup_admin()
+            queuer = await rig.add_user("queuer", queue=True, manager=True)
+            body = {"unload_models": True, "free_memory": True}
+            assert (await rig.http.post(rig.url("/api/free"), json=body, headers=queuer)).status == 403, "affects everyone's runs"
+            assert (await rig.http.post(rig.url("/api/free"), json=body, headers=admin)).status == 200
+    run(scenario())