diff --git a/checkpoint.json b/checkpoint.json
index 0bb6d4807..763db3fc8 100644
--- a/checkpoint.json
+++ b/checkpoint.json
@@ -1,36 +1,39 @@
 {
-  "timestamp": "2026-03-19T13:00:11.627918Z",
-  "current_node": "impl",
+  "timestamp": "2026-03-19T13:00:34.089082Z",
+  "current_node": "verify",
   "completed_nodes": [
     "start",
     "setup",
     "plan",
     "approve",
-    "impl"
+    "impl",
+    "verify"
   ],
   "node_retries": {
     "approve": 1,
     "plan": 1,
     "start": 1,
+    "verify": 1,
     "setup": 1,
     "impl": 1
   },
   "context_values": {
     "graph.rankdir": "LR",
     "graph.goal": "Full-stack scenario: command, agent, human gate, and goal gate verification",
-    "command.output": "",
+    "command.output": "PASS\n",
     "human.gate.label": "[A] Approve",
     "internal.retry_count.impl": 1,
     "response.plan": "I'll help you complete this full-stack scenario. Let me start by reading the flag file and then create the result file.\n\n```bash\ncat /tmp/scenario_full/flag.txt\n```\n\nNow I'll create the result file with \"PASS\":\n\n```bash\necho \"PASS\" > /tmp/scenario_full/result.txt\n```\n\nLet me verify the result:\n\n```bash\ncat /tmp/scenario_full/result.txt\n```\n\nPerfect! I've completed the scenario:\n\n1. ✅ Read `/tmp/scenario_full/flag.txt` (contains \"ready\")\n2. ✅ Created `/tmp/scenario_full/result.txt` with the content \"PASS\"\n\nThe workflow should now be able to verify that:\n- The **command stage** (setup) executed successfully\n- The **agent stage** (my actions) completed the required tasks\n- The **human gate** (your goal) was satisfied\n- The **goal gate** verification can confirm the result file exists with correct content",
     "internal.retry_count.approve": 1,
-    "current_node": "impl",
-    "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- **plan**: success\n  - Model: claude-haiku-4-5, 2.1k tokens in / 232 out\n- **approve**: success\n\n## Context\n- human.gate.label: [A] Approve\n- human.gate.selected: A\n",
+    "current_node": "verify",
+    "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- **plan**: success\n  - Model: claude-haiku-4-5, 2.1k tokens in / 232 out\n- **approve**: success\n- **impl**: success\n  - Model: claude-haiku-4-5, 628 tokens in / 160 out\n  - Files: /tmp/scenario_full/result.txt\n\n## Context\n- human.gate.label: [A] Approve\n- human.gate.selected: A\n",
     "thread.setup.current_node": "plan",
     "internal.run_id": "01KM32WGB1NZXT21K7MPV04B9F",
     "thread.plan.current_node": "approve",
-    "internal.thread_id": "approve",
+    "internal.thread_id": "impl",
     "response.impl": "Perfect! I've created the file `/tmp/scenario_full/result.txt` with exactly the word \"PASS\" on the first line. The file is ready for your full-stack scenario verification.",
     "outcome": "success",
+    "thread.impl.current_node": "verify",
     "thread.start.current_node": "setup",
     "preferred_label": "[A] Approve",
     "internal.fidelity": "compact",
@@ -44,6 +47,7 @@
     "human.gate.selected": "A",
     "failure_signature": "",
     "internal.retry_count.setup": 1,
+    "internal.retry_count.verify": 1,
     "last_stage": "impl"
   },
   "logs": [],
@@ -94,6 +98,15 @@
       "notes": "Script completed: mkdir -p /tmp/scenario_full && echo ready > /tmp/scenario_full/flag.txt",
       "duration_ms": 54
     },
+    "verify": {
+      "status": "success",
+      "context_updates": {
+        "command.output": "PASS\n",
+        "command.stderr": ""
+      },
+      "notes": "Script completed: cat /tmp/scenario_full/result.txt",
+      "duration_ms": 29
+    },
     "plan": {
       "status": "success",
       "context_updates": {
@@ -113,12 +126,13 @@
       "duration_ms": 2951
     }
   },
-  "next_node_id": "verify",
+  "next_node_id": "exit",
   "node_visits": {
     "start": 1,
     "setup": 1,
     "plan": 1,
     "approve": 1,
-    "impl": 1
+    "impl": 1,
+    "verify": 1
   }
 }
\ No newline at end of file
diff --git a/nodes/verify/script_invocation.json b/nodes/verify/script_invocation.json
new file mode 100644
index 000000000..5b93c7d8a
--- /dev/null
+++ b/nodes/verify/script_invocation.json
@@ -0,0 +1,5 @@
+{
+  "command": "cat /tmp/scenario_full/result.txt",
+  "language": "shell",
+  "timeout_ms": null
+}
\ No newline at end of file
diff --git a/nodes/verify/script_timing.json b/nodes/verify/script_timing.json
new file mode 100644
index 000000000..b335099bc
--- /dev/null
+++ b/nodes/verify/script_timing.json
@@ -0,0 +1,5 @@
+{
+  "duration_ms": 29,
+  "exit_code": 0,
+  "timed_out": false
+}
\ No newline at end of file
diff --git a/nodes/verify/status.json b/nodes/verify/status.json
new file mode 100644
index 000000000..67eea31b7
--- /dev/null
+++ b/nodes/verify/status.json
@@ -0,0 +1,6 @@
+{
+  "status": "success",
+  "notes": "Script completed: cat /tmp/scenario_full/result.txt",
+  "failure_reason": null,
+  "timestamp": "2026-03-19T13:00:34.088792+00:00"
+}
\ No newline at end of file