docs(notebook): update subgraph notebooks

- Clear all outputs for clean execution on subgraph-persistence.ipynb
- Clear all outputs for clean execution on subgraphs-manage-state.ipynb
- Ready for end-to-end execution with Redis checkpoint

Author: bsbodden

examples/subgraph-persistence.ipynb

@@ -47,7 +47,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 1,
+   "execution_count": null,
    "id": "77d1eafa-3252-45f6-9af0-d94e1f9c5c9e",
    "metadata": {},
    "outputs": [],
@@ -105,21 +105,10 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 2,
+   "execution_count": null,
    "id": "0d76f0c0-bd77-4eca-9527-27bcdf85dd42",
    "metadata": {},
-   "outputs": [
-    {
-     "data": {
-      "text/plain": [
-       "<langgraph.graph.state.StateGraph at 0xffff91ca9490>"
-      ]
-     },
-     "execution_count": 2,
-     "metadata": {},
-     "output_type": "execute_result"
-    }
-   ],
+   "outputs": [],
    "source": [
     "from typing import TypedDict\n",
     "\n",
@@ -179,18 +168,10 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 3,
+   "execution_count": null,
    "id": "7657d285-c896-40c9-a569-b4a3b9c230c7",
    "metadata": {},
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "19:48:39 langgraph.checkpoint.redis INFO   Redis client is a standalone client\n"
-     ]
-    }
-   ],
+   "outputs": [],
    "source": [
     "from langgraph.checkpoint.redis import RedisSaver\n",
     "\n",
@@ -224,7 +205,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 4,
+   "execution_count": null,
    "id": "13da686e-6ed6-4b83-93e8-1631fcc8c2a9",
    "metadata": {},
    "outputs": [],
@@ -234,21 +215,10 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 5,
+   "execution_count": null,
    "id": "8721f045-2e82-4bf0-9d85-5ba6ecf899d6",
    "metadata": {},
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "{'node_1': {'foo': 'hi! foo'}}\n",
-      "{'subgraph_node_1': {'bar': 'bar'}}\n",
-      "{'subgraph_node_2': {'foo': 'hi! foobar'}}\n",
-      "{'node_2': {'foo': 'hi! foobar'}}\n"
-     ]
-    }
-   ],
+   "outputs": [],
    "source": [
     "for _, chunk in graph.stream({\"foo\": \"foo\"}, config, subgraphs=True):\n",
     "    print(chunk)"
@@ -264,21 +234,10 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 6,
+   "execution_count": null,
    "id": "3e817283-142d-4fda-8cb1-8de34717f833",
    "metadata": {},
-   "outputs": [
-    {
-     "data": {
-      "text/plain": [
-       "{'foo': 'hi! foobar'}"
-      ]
-     },
-     "execution_count": 6,
-     "metadata": {},
-     "output_type": "execute_result"
-    }
-   ],
+   "outputs": [],
    "source": [
     "graph.get_state(config).values"
    ]
@@ -298,7 +257,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 7,
+   "execution_count": null,
    "id": "e896628f-36b2-45eb-b7c5-c64c1098f328",
    "metadata": {},
    "outputs": [],
@@ -318,44 +277,21 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 8,
+   "execution_count": null,
    "id": "21e96df3-946d-40f8-8d6d-055ae4177452",
    "metadata": {},
-   "outputs": [
-    {
-     "data": {
-      "text/plain": [
-       "{'configurable': {'thread_id': '1',\n",
-       "  'checkpoint_ns': 'node_2:a17a6508-101f-059f-10ae-100a6b79cc4c'}}"
-      ]
-     },
-     "execution_count": 8,
-     "metadata": {},
-     "output_type": "execute_result"
-    }
-   ],
+   "outputs": [],
    "source": [
     "subgraph_config = state_with_subgraph.tasks[0].state\n",
     "subgraph_config"
    ]
   },
   {
    "cell_type": "code",
-   "execution_count": 9,
+   "execution_count": null,
    "id": "1d2401b3-d52b-4895-a5d1-dccf015ba216",
    "metadata": {},
-   "outputs": [
-    {
-     "data": {
-      "text/plain": [
-       "{'foo': 'hi! foobar', 'bar': 'bar'}"
-      ]
-     },
-     "execution_count": 9,
-     "metadata": {},
-     "output_type": "execute_result"
-    }
-   ],
+   "outputs": [],
    "source": [
     "graph.get_state(subgraph_config).values"
    ]