diff --git a/checkpoint.json b/checkpoint.json
index f2cafb318..94f8221db 100644
--- a/checkpoint.json
+++ b/checkpoint.json
@@ -1,30 +1,40 @@
 {
-  "timestamp": "2026-03-27T14:58:12.637137Z",
-  "current_node": "setup",
+  "timestamp": "2026-03-27T14:58:18.728023Z",
+  "current_node": "plan",
   "completed_nodes": [
     "start",
-    "setup"
+    "setup",
+    "plan"
   ],
   "node_retries": {},
   "context_values": {
-    "internal.thread_id": "start",
+    "response.plan": "# Reading and Creating Files\n\nI'll execute the commands to read the flag file and create the result file:\n\n```bash\ncat /tmp/scenario_full/flag.txt && echo PASS > /tmp/scenario_full/result.txt\n```\n\n**Step-by-step:**\n\n1. **Read the flag file:**\n   ```bash\n   cat /tmp/scenario_full/flag.txt\n   ```\n   Expected output: `ready`\n\n2. **Create the result file:**\n   ```bash\n   echo PASS > /tmp/scenario_full/result.txt\n   ```\n\n3. **Verify the result:**\n   ```bash\n   cat /tmp/scenario_full/result.txt\n   ```\n   Expected output: `PASS`\n\nBoth operations should complete successfully, moving you to the next stage of the full-stack scenario.",
+    "internal.thread_id": "setup",
     "thread.start.current_node": "setup",
     "internal.fidelity": "compact",
     "command.output": "",
     "internal.run_id": "01KMQWTV54307PJ37C87C412F9",
+    "thread.setup.current_node": "plan",
     "graph.rankdir": "LR",
     "command.stderr": "",
     "internal.retry_count.setup": 0,
     "failure_class": "",
     "internal.retry_count.start": 0,
     "graph.goal": "Full-stack scenario: command, agent, human gate, and goal gate verification",
-    "current_node": "setup",
-    "current.preamble": "Goal: Full-stack scenario: command, agent, human gate, and goal gate verification\n",
+    "current_node": "plan",
+    "last_stage": "plan",
+    "internal.retry_count.plan": 0,
+    "current.preamble": "Goal: Full-stack scenario: command, agent, human gate, and goal gate verification\n\n## Completed stages\n- **setup**: success\n  - Script: `mkdir -p /tmp/scenario_full && echo ready > /tmp/scenario_full/flag.txt`\n  - Stdout: (empty)\n  - Stderr: (empty)\n",
     "internal.node_visit_count": 1,
     "outcome": "success",
-    "failure_signature": ""
+    "failure_signature": "",
+    "last_response": "# Reading and Creating Files\n\nI'll execute the commands to read the flag file and create the result file:\n\n```bash\ncat /tmp/scenario_full/flag.txt && echo PASS > /tmp/scenario_full/result.txt\n```\n\n**S"
   },
   "node_outcomes": {
+    "start": {
+      "status": "success",
+      "usage": null
+    },
     "setup": {
       "status": "success",
       "context_updates": {
@@ -34,14 +44,29 @@
       "notes": "Script completed: mkdir -p /tmp/scenario_full && echo ready > /tmp/scenario_full/flag.txt",
       "usage": null
     },
-    "start": {
+    "plan": {
       "status": "success",
-      "usage": null
+      "context_updates": {
+        "last_response": "# Reading and Creating Files\n\nI'll execute the commands to read the flag file and create the result file:\n\n```bash\ncat /tmp/scenario_full/flag.txt && echo PASS > /tmp/scenario_full/result.txt\n```\n\n**S",
+        "response.plan": "# Reading and Creating Files\n\nI'll execute the commands to read the flag file and create the result file:\n\n```bash\ncat /tmp/scenario_full/flag.txt && echo PASS > /tmp/scenario_full/result.txt\n```\n\n**Step-by-step:**\n\n1. **Read the flag file:**\n   ```bash\n   cat /tmp/scenario_full/flag.txt\n   ```\n   Expected output: `ready`\n\n2. **Create the result file:**\n   ```bash\n   echo PASS > /tmp/scenario_full/result.txt\n   ```\n\n3. **Verify the result:**\n   ```bash\n   cat /tmp/scenario_full/result.txt\n   ```\n   Expected output: `PASS`\n\nBoth operations should complete successfully, moving you to the next stage of the full-stack scenario.",
+        "last_stage": "plan"
+      },
+      "notes": "Stage completed: plan",
+      "usage": {
+        "model": "claude-haiku-4-5",
+        "input_tokens": 2300,
+        "output_tokens": 504,
+        "cache_read_tokens": 0,
+        "cache_write_tokens": 0,
+        "reasoning_tokens": 280,
+        "cost": 0.003856
+      }
     }
   },
-  "next_node_id": "plan",
+  "next_node_id": "approve",
   "node_visits": {
     "setup": 1,
-    "start": 1
+    "start": 1,
+    "plan": 1
   }
 }
\ No newline at end of file
diff --git a/nodes/plan/prompt.md b/nodes/plan/prompt.md
new file mode 100644
index 000000000..5a0540ddf
--- /dev/null
+++ b/nodes/plan/prompt.md
@@ -0,0 +1,10 @@
+Goal: Full-stack scenario: command, agent, human gate, and goal gate verification
+
+## Completed stages
+- **setup**: success
+  - Script: `mkdir -p /tmp/scenario_full && echo ready > /tmp/scenario_full/flag.txt`
+  - Stdout: (empty)
+  - Stderr: (empty)
+
+
+Read /tmp/scenario_full/flag.txt. Then create a file /tmp/scenario_full/result.txt containing the word PASS.
\ No newline at end of file
diff --git a/nodes/plan/provider_used.json b/nodes/plan/provider_used.json
new file mode 100644
index 000000000..f79dec8be
--- /dev/null
+++ b/nodes/plan/provider_used.json
@@ -0,0 +1,5 @@
+{
+  "mode": "prompt",
+  "provider": "anthropic",
+  "model": "claude-haiku-4-5"
+}
\ No newline at end of file
diff --git a/nodes/plan/response.md b/nodes/plan/response.md
new file mode 100644
index 000000000..e1885dc2a
--- /dev/null
+++ b/nodes/plan/response.md
@@ -0,0 +1,28 @@
+# Reading and Creating Files
+
+I'll execute the commands to read the flag file and create the result file:
+
+```bash
+cat /tmp/scenario_full/flag.txt && echo PASS > /tmp/scenario_full/result.txt
+```
+
+**Step-by-step:**
+
+1. **Read the flag file:**
+   ```bash
+   cat /tmp/scenario_full/flag.txt
+   ```
+   Expected output: `ready`
+
+2. **Create the result file:**
+   ```bash
+   echo PASS > /tmp/scenario_full/result.txt
+   ```
+
+3. **Verify the result:**
+   ```bash
+   cat /tmp/scenario_full/result.txt
+   ```
+   Expected output: `PASS`
+
+Both operations should complete successfully, moving you to the next stage of the full-stack scenario.
\ No newline at end of file
diff --git a/nodes/plan/status.json b/nodes/plan/status.json
new file mode 100644
index 000000000..68630dbb4
--- /dev/null
+++ b/nodes/plan/status.json
@@ -0,0 +1,6 @@
+{
+  "status": "success",
+  "notes": "Stage completed: plan",
+  "failure_reason": null,
+  "timestamp": "2026-03-27T14:58:18.727734+00:00"
+}
\ No newline at end of file