diff --git a/checkpoint.json b/checkpoint.json
index bccf7a5e6..b6640cbad 100644
--- a/checkpoint.json
+++ b/checkpoint.json
@@ -1,34 +1,63 @@
 {
-  "timestamp": "2026-03-16T05:33:49.668938Z",
-  "current_node": "setup",
+  "timestamp": "2026-03-16T05:35:43.163728Z",
+  "current_node": "solve",
   "completed_nodes": [
     "start",
-    "setup"
+    "setup",
+    "solve"
   ],
   "node_retries": {
     "start": 1,
-    "setup": 1
+    "setup": 1,
+    "solve": 1
   },
   "context_values": {
-    "failure_class": "deterministic",
-    "current_node": "setup",
+    "failure_class": "",
+    "current_node": "solve",
     "graph.rankdir": "LR",
+    "last_response": "The changes are clean and minimal. Here's a summary of what was done:\n\n1. **Renamed `_build_app_dict` to `build_app_dict`** (line 433) — Made the method public as requested, since it's used by both ",
     "thread.start.current_node": "setup",
     "graph.goal": "Added model class to app_list context\nDescription\n\t \n\t\t(last modified by Raffaele Salmaso)\n\t \nI need to manipulate the app_list in my custom admin view, and the easiest way to get the result is to have access to the model class (currently the dictionary is a serialized model).\nIn addition I would make the _build_app_dict method public, as it is used by the two views index and app_index.\n",
-    "failure_signature": "setup|deterministic|script failed with exit code: <n> ## stdout fatal: destination path '.' already exists and is not an empty directory.",
+    "failure_signature": "",
     "internal.run_id": "01KKTJ55921XXYD7GQ526WZG4T",
     "command.stderr": "",
-    "internal.thread_id": "start",
-    "current.preamble": "Goal: Added model class to app_list context\nDescription\n\t \n\t\t(last modified by Raffaele Salmaso)\n\t \nI need to manipulate the app_list in my custom admin view, and the easiest way to get the result is to have access to the model class (currently the dictionary is a serialized model).\nIn addition I would make the _build_app_dict method public, as it is used by the two views index and app_index.\n\n",
+    "thread.setup.current_node": "solve",
+    "internal.retry_count.solve": 1,
+    "last_stage": "solve",
+    "response.solve": "The changes are clean and minimal. Here's a summary of what was done:\n\n1. **Renamed `_build_app_dict` to `build_app_dict`** (line 433) — Made the method public as requested, since it's used by both `index` and `app_index` views and is useful for custom admin views.\n\n2. **Added `'model': model`** to the `model_dict` dictionary (line 464) — This adds the actual model class to the app_list context, allowing custom admin views to access and manipulate it directly.\n\n3. **Updated both call sites** (lines 506 and 537) — Changed `self._build_app_dict(...)` to `self.build_app_dict(...)` in `get_app_list()` and `app_index()`.\n\nAll 416 existing admin_views tests pass with these changes.",
+    "internal.thread_id": "setup",
+    "current.preamble": "Goal: Added model class to app_list context\nDescription\n\t \n\t\t(last modified by Raffaele Salmaso)\n\t \nI need to manipulate the app_list in my custom admin view, and the easiest way to get the result is to have access to the model class (currently the dictionary is a serialized model).\nIn addition I would make the _build_app_dict method public, as it is used by the two views index and app_index.\n\n\n## Completed stages\n- **setup**: fail\n  - Script: `git clone https://github.com/django/django.git . && git checkout 0456d3e42795481a186db05719300691fe2a1029 && python -m pip install -e .`\n  - Stdout:\n    ```\n    fatal: destination path '.' already exists and is not an empty directory.\n    ```\n  - Stderr: (empty)\n\n## Context\n- failure_class: deterministic\n- failure_signature: setup|deterministic|script failed with exit code: <n> ## stdout fatal: destination path '.' already exists and is not an empty directory.\n",
     "internal.retry_count.start": 1,
     "internal.retry_count.setup": 1,
     "internal.fidelity": "compact",
     "internal.node_visit_count": 1,
     "command.output": "fatal: destination path '.' already exists and is not an empty directory.\n",
-    "outcome": "fail"
+    "outcome": "success"
   },
   "logs": [],
   "node_outcomes": {
+    "solve": {
+      "status": "success",
+      "context_updates": {
+        "response.solve": "The changes are clean and minimal. Here's a summary of what was done:\n\n1. **Renamed `_build_app_dict` to `build_app_dict`** (line 433) — Made the method public as requested, since it's used by both `index` and `app_index` views and is useful for custom admin views.\n\n2. **Added `'model': model`** to the `model_dict` dictionary (line 464) — This adds the actual model class to the app_list context, allowing custom admin views to access and manipulate it directly.\n\n3. **Updated both call sites** (lines 506 and 537) — Changed `self._build_app_dict(...)` to `self.build_app_dict(...)` in `get_app_list()` and `app_index()`.\n\nAll 416 existing admin_views tests pass with these changes.",
+        "last_stage": "solve",
+        "last_response": "The changes are clean and minimal. Here's a summary of what was done:\n\n1. **Renamed `_build_app_dict` to `build_app_dict`** (line 433) — Made the method public as requested, since it's used by both "
+      },
+      "notes": "Stage completed: solve",
+      "usage": {
+        "model": "claude-opus-4-6",
+        "input_tokens": 8087,
+        "output_tokens": 2710,
+        "cache_read_tokens": 164201,
+        "cache_write_tokens": 13522,
+        "reasoning_tokens": 56,
+        "cost": 0.324555
+      },
+      "files_touched": [
+        "/tmp/django/django/contrib/admin/sites.py"
+      ],
+      "duration_ms": 111339
+    },
     "start": {
       "status": "success",
       "duration_ms": 0
@@ -46,11 +75,12 @@
       "duration_ms": 19
     }
   },
-  "next_node_id": "solve",
+  "next_node_id": "extract_patch",
   "loop_failure_signatures": {
     "setup|deterministic|script failed with exit code: <n> ## stdout fatal: destination path '.' already exists and is not an empty directory.": 1
   },
   "node_visits": {
+    "solve": 1,
     "start": 1,
     "setup": 1
   }
diff --git a/nodes/solve/prompt.md b/nodes/solve/prompt.md
new file mode 100644
index 000000000..d08a4eb31
--- /dev/null
+++ b/nodes/solve/prompt.md
@@ -0,0 +1,32 @@
+Goal: Added model class to app_list context
+Description
+	 
+		(last modified by Raffaele Salmaso)
+	 
+I need to manipulate the app_list in my custom admin view, and the easiest way to get the result is to have access to the model class (currently the dictionary is a serialized model).
+In addition I would make the _build_app_dict method public, as it is used by the two views index and app_index.
+
+
+## Completed stages
+- **setup**: fail
+  - Script: `git clone https://github.com/django/django.git . && git checkout 0456d3e42795481a186db05719300691fe2a1029 && python -m pip install -e .`
+  - Stdout:
+    ```
+    fatal: destination path '.' already exists and is not an empty directory.
+    ```
+  - Stderr: (empty)
+
+## Context
+- failure_class: deterministic
+- failure_signature: setup|deterministic|script failed with exit code: <n> ## stdout fatal: destination path '.' already exists and is not an empty directory.
+
+
+Fix this GitHub issue in the repository. Make the minimal code change needed.
+
+Added model class to app_list context
+Description
+	 
+		(last modified by Raffaele Salmaso)
+	 
+I need to manipulate the app_list in my custom admin view, and the easiest way to get the result is to have access to the model class (currently the dictionary is a serialized model).
+In addition I would make the _build_app_dict method public, as it is used by the two views index and app_index.
diff --git a/nodes/solve/provider_used.json b/nodes/solve/provider_used.json
new file mode 100644
index 000000000..c1905ff10
--- /dev/null
+++ b/nodes/solve/provider_used.json
@@ -0,0 +1,5 @@
+{
+  "mode": "agent",
+  "provider": "anthropic",
+  "model": "claude-opus-4-6"
+}
\ No newline at end of file
diff --git a/nodes/solve/response.md b/nodes/solve/response.md
new file mode 100644
index 000000000..305926ea5
--- /dev/null
+++ b/nodes/solve/response.md
@@ -0,0 +1,9 @@
+The changes are clean and minimal. Here's a summary of what was done:
+
+1. **Renamed `_build_app_dict` to `build_app_dict`** (line 433) — Made the method public as requested, since it's used by both `index` and `app_index` views and is useful for custom admin views.
+
+2. **Added `'model': model`** to the `model_dict` dictionary (line 464) — This adds the actual model class to the app_list context, allowing custom admin views to access and manipulate it directly.
+
+3. **Updated both call sites** (lines 506 and 537) — Changed `self._build_app_dict(...)` to `self.build_app_dict(...)` in `get_app_list()` and `app_index()`.
+
+All 416 existing admin_views tests pass with these changes.
\ No newline at end of file
diff --git a/nodes/solve/status.json b/nodes/solve/status.json
new file mode 100644
index 000000000..9d13de694
--- /dev/null
+++ b/nodes/solve/status.json
@@ -0,0 +1,6 @@
+{
+  "status": "success",
+  "notes": "Stage completed: solve",
+  "failure_reason": null,
+  "timestamp": "2026-03-16T05:35:43.162740+00:00"
+}
\ No newline at end of file