From 44e02cea8eae7fa170a1bbd3a3025b627f2ad5e8 Mon Sep 17 00:00:00 2001
From: Fabro <noreply@fabro.sh>
Date: Sun, 22 Mar 2026 16:13:15 -0400
Subject: [PATCH] checkpoint
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
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⚒️ Generated with [Fabro](https://fabro.sh)
---
 checkpoint.json               | 62 +++++++++++++++++++++++++----------
 nodes/impl/prompt.md          | 17 ++++++++++
 nodes/impl/provider_used.json |  5 +++
 nodes/impl/response.md        |  1 +
 nodes/impl/status.json        |  6 ++++
 5 files changed, 74 insertions(+), 17 deletions(-)
 create mode 100644 nodes/impl/prompt.md
 create mode 100644 nodes/impl/provider_used.json
 create mode 100644 nodes/impl/response.md
 create mode 100644 nodes/impl/status.json

diff --git a/checkpoint.json b/checkpoint.json
index 2d111c344..bc78be5a9 100644
--- a/checkpoint.json
+++ b/checkpoint.json
@@ -1,48 +1,75 @@
 {
-  "timestamp": "2026-03-22T20:13:05.148285Z",
-  "current_node": "approve",
+  "timestamp": "2026-03-22T20:13:15.906339Z",
+  "current_node": "impl",
   "completed_nodes": [
     "start",
     "setup",
     "plan",
-    "approve"
+    "approve",
+    "impl"
   ],
   "node_retries": {
     "start": 1,
     "approve": 1,
+    "impl": 1,
     "plan": 1,
     "setup": 1
   },
   "context_values": {
-    "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, 2.3k tokens in / 324 out\n",
     "internal.node_visit_count": 1,
-    "thread.plan.current_node": "approve",
-    "human.gate.selected": "A",
+    "preferred_label": "[A] Approve",
     "outcome": "success",
     "graph.goal": "Full-stack scenario: command, agent, human gate, and goal gate verification",
     "failure_signature": "",
-    "last_response": "I'll complete this task by reading the flag file and creating the result file.\n\n```bash\ncat /tmp/scenario_full/flag.txt && echo PASS > /tmp/scenario_full/result.txt && cat /tmp/scenario_full/result.tx",
-    "internal.run_id": "01KMBJVDZAQHS05N3B6AQF67TG",
+    "last_response": "Done! I've created the file `/tmp/scenario_full/result.txt` with the word \"PASS\" on the first line. The file is ready for the goal gate verification stage.",
     "response.plan": "I'll complete this task by reading the flag file and creating the result file.\n\n```bash\ncat /tmp/scenario_full/flag.txt && echo PASS > /tmp/scenario_full/result.txt && cat /tmp/scenario_full/result.txt\n```\n\nLet me break this down:\n1. `cat /tmp/scenario_full/flag.txt` — reads and displays the flag file (should contain \"ready\")\n2. `echo PASS > /tmp/scenario_full/result.txt` — creates the result file with the word \"PASS\"\n3. `cat /tmp/scenario_full/result.txt` — verifies the result file was created correctly\n\n**Expected output:**\n```\nready\nPASS\n```\n\nThis demonstrates:\n- ✅ **Command stage** — executing shell commands\n- ✅ **File I/O** — reading from and writing to files\n- ✅ **Verification** — confirming the result file contains \"PASS\"",
-    "preferred_label": "[A] Approve",
     "thread.start.current_node": "setup",
-    "internal.retry_count.setup": 1,
-    "graph.rankdir": "LR",
+    "thread.setup.current_node": "plan",
     "failure_class": "",
     "command.stderr": "",
-    "internal.thread_id": "plan",
-    "command.output": "",
-    "thread.setup.current_node": "plan",
-    "last_stage": "plan",
+    "thread.approve.current_node": "impl",
     "internal.retry_count.approve": 1,
     "internal.retry_count.plan": 1,
-    "current_node": "approve",
+    "current_node": "impl",
     "internal.fidelity": "compact",
+    "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, 2.3k tokens in / 324 out\n- **approve**: success\n\n## Context\n- human.gate.label: [A] Approve\n- human.gate.selected: A\n",
+    "thread.plan.current_node": "approve",
+    "human.gate.selected": "A",
+    "internal.retry_count.impl": 1,
+    "response.impl": "Done! I've created the file `/tmp/scenario_full/result.txt` with the word \"PASS\" on the first line. The file is ready for the goal gate verification stage.",
+    "internal.run_id": "01KMBJVDZAQHS05N3B6AQF67TG",
+    "internal.retry_count.setup": 1,
+    "graph.rankdir": "LR",
+    "last_stage": "impl",
+    "internal.thread_id": "approve",
+    "command.output": "",
     "internal.retry_count.start": 1,
     "human.gate.label": "[A] Approve"
   },
   "logs": [],
   "node_outcomes": {
+    "impl": {
+      "status": "success",
+      "context_updates": {
+        "response.impl": "Done! I've created the file `/tmp/scenario_full/result.txt` with the word \"PASS\" on the first line. The file is ready for the goal gate verification stage.",
+        "last_response": "Done! I've created the file `/tmp/scenario_full/result.txt` with the word \"PASS\" on the first line. The file is ready for the goal gate verification stage.",
+        "last_stage": "impl"
+      },
+      "notes": "Stage completed: impl",
+      "usage": {
+        "model": "claude-haiku-4-5",
+        "input_tokens": 734,
+        "output_tokens": 228,
+        "cache_read_tokens": 4878,
+        "cache_write_tokens": 5386,
+        "reasoning_tokens": 94,
+        "cost": 0.0014992
+      },
+      "files_touched": [
+        "/tmp/scenario_full/result.txt"
+      ],
+      "duration_ms": 6737
+    },
     "approve": {
       "status": "success",
       "preferred_label": "[A] Approve",
@@ -88,8 +115,9 @@
       "duration_ms": 3131
     }
   },
-  "next_node_id": "impl",
+  "next_node_id": "verify",
   "node_visits": {
+    "impl": 1,
     "plan": 1,
     "start": 1,
     "setup": 1,
diff --git a/nodes/impl/prompt.md b/nodes/impl/prompt.md
new file mode 100644
index 000000000..9180df338
--- /dev/null
+++ b/nodes/impl/prompt.md
@@ -0,0 +1,17 @@
+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)
+- **plan**: success
+  - Model: claude-haiku-4-5, 2.3k tokens in / 324 out
+- **approve**: success
+
+## Context
+- human.gate.label: [A] Approve
+- human.gate.selected: A
+
+
+Create the file /tmp/scenario_full/result.txt containing exactly the word PASS on the first line.
\ No newline at end of file
diff --git a/nodes/impl/provider_used.json b/nodes/impl/provider_used.json
new file mode 100644
index 000000000..17e74f4d1
--- /dev/null
+++ b/nodes/impl/provider_used.json
@@ -0,0 +1,5 @@
+{
+  "mode": "agent",
+  "provider": "anthropic",
+  "model": "claude-haiku-4-5"
+}
\ No newline at end of file
diff --git a/nodes/impl/response.md b/nodes/impl/response.md
new file mode 100644
index 000000000..1e13440ba
--- /dev/null
+++ b/nodes/impl/response.md
@@ -0,0 +1 @@
+Done! I've created the file `/tmp/scenario_full/result.txt` with the word "PASS" on the first line. The file is ready for the goal gate verification stage.
\ No newline at end of file
diff --git a/nodes/impl/status.json b/nodes/impl/status.json
new file mode 100644
index 000000000..f3b6751e1
--- /dev/null
+++ b/nodes/impl/status.json
@@ -0,0 +1,6 @@
+{
+  "status": "success",
+  "notes": "Stage completed: impl",
+  "failure_reason": null,
+  "timestamp": "2026-03-22T20:13:15.905828+00:00"
+}
\ No newline at end of file