From 8940abbc0348680dd4eecb3f41c0e440ab606813 Mon Sep 17 00:00:00 2001
From: Fabro <noreply@fabro.sh>
Date: Thu, 19 Mar 2026 09:41:07 -0400
Subject: [PATCH] checkpoint
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

⚒️ Generated with [Fabro](https://fabro.sh)
---
 checkpoint.json               | 42 ++++++++++++++++++++++++++++-------
 nodes/work/prompt.md          | 10 +++++++++
 nodes/work/provider_used.json |  5 +++++
 nodes/work/response.md        |  7 ++++++
 nodes/work/status.json        |  6 +++++
 5 files changed, 62 insertions(+), 8 deletions(-)
 create mode 100644 nodes/work/prompt.md
 create mode 100644 nodes/work/provider_used.json
 create mode 100644 nodes/work/response.md
 create mode 100644 nodes/work/status.json

diff --git a/checkpoint.json b/checkpoint.json
index 19e184228..11ef9cb71 100644
--- a/checkpoint.json
+++ b/checkpoint.json
@@ -1,12 +1,14 @@
 {
-  "timestamp": "2026-03-19T13:41:01.172560Z",
-  "current_node": "setup",
+  "timestamp": "2026-03-19T13:41:07.636276Z",
+  "current_node": "work",
   "completed_nodes": [
     "start",
-    "setup"
+    "setup",
+    "work"
   ],
   "node_retries": {
     "start": 1,
+    "work": 1,
     "setup": 1
   },
   "context_values": {
@@ -15,8 +17,9 @@
     "failure_signature": "",
     "thread.start.current_node": "setup",
     "command.stderr": "",
-    "current.preamble": "Goal: Verify sandbox filesystem is shared across command and agent nodes\n",
-    "internal.thread_id": "start",
+    "current.preamble": "Goal: Verify sandbox filesystem is shared across command and agent nodes\n\n## Completed stages\n- **setup**: success\n  - Script: `echo SCENARIO_FLAG_42 > /tmp/scenario_flag.txt`\n  - Stdout: (empty)\n  - Stderr: (empty)\n",
+    "last_stage": "work",
+    "internal.thread_id": "setup",
     "graph.rankdir": "LR",
     "command.output": "",
     "internal.fidelity": "compact",
@@ -24,12 +27,34 @@
     "internal.retry_count.start": 1,
     "failure_class": "",
     "outcome": "success",
-    "current_node": "setup",
+    "current_node": "work",
+    "last_response": "Perfect! The file `/tmp/scenario_flag.txt` contains `SCENARIO_FLAG_42`, which confirms that the sandbox filesystem is indeed shared across command and agent nodes. The setup stage successfully created",
     "internal.node_visit_count": 1,
-    "internal.work_dir": "/private/var/folders/nm/bd2dwzy52t1ckn3tklsfmy1c0000gn/T/.tmpioA9a3/run/worktree"
+    "internal.work_dir": "/private/var/folders/nm/bd2dwzy52t1ckn3tklsfmy1c0000gn/T/.tmpioA9a3/run/worktree",
+    "thread.setup.current_node": "work",
+    "internal.retry_count.work": 1,
+    "response.work": "Perfect! The file `/tmp/scenario_flag.txt` contains `SCENARIO_FLAG_42`, which confirms that the sandbox filesystem is indeed shared across command and agent nodes. The setup stage successfully created the file with that content, and we were able to read it, demonstrating that:\n\n1. ✅ The file created in the setup stage persists in the filesystem\n2. ✅ The file is readable from subsequent nodes\n3. ✅ The sandbox filesystem is properly shared across different node types\n\nThis validates that the workflow's sandbox environment maintains state across execution stages."
   },
   "logs": [],
   "node_outcomes": {
+    "work": {
+      "status": "success",
+      "context_updates": {
+        "last_response": "Perfect! The file `/tmp/scenario_flag.txt` contains `SCENARIO_FLAG_42`, which confirms that the sandbox filesystem is indeed shared across command and agent nodes. The setup stage successfully created",
+        "response.work": "Perfect! The file `/tmp/scenario_flag.txt` contains `SCENARIO_FLAG_42`, which confirms that the sandbox filesystem is indeed shared across command and agent nodes. The setup stage successfully created the file with that content, and we were able to read it, demonstrating that:\n\n1. ✅ The file created in the setup stage persists in the filesystem\n2. ✅ The file is readable from subsequent nodes\n3. ✅ The sandbox filesystem is properly shared across different node types\n\nThis validates that the workflow's sandbox environment maintains state across execution stages.",
+        "last_stage": "work"
+      },
+      "notes": "Stage completed: work",
+      "usage": {
+        "model": "claude-haiku-4-5",
+        "input_tokens": 507,
+        "output_tokens": 204,
+        "cache_read_tokens": 4730,
+        "cache_write_tokens": 5135,
+        "cost": 0.0012216
+      },
+      "duration_ms": 4120
+    },
     "start": {
       "status": "success",
       "duration_ms": 0
@@ -44,9 +69,10 @@
       "duration_ms": 2
     }
   },
-  "next_node_id": "work",
+  "next_node_id": "verify",
   "node_visits": {
     "setup": 1,
+    "work": 1,
     "start": 1
   }
 }
\ No newline at end of file
diff --git a/nodes/work/prompt.md b/nodes/work/prompt.md
new file mode 100644
index 000000000..59af50d8f
--- /dev/null
+++ b/nodes/work/prompt.md
@@ -0,0 +1,10 @@
+Goal: Verify sandbox filesystem is shared across command and agent nodes
+
+## Completed stages
+- **setup**: success
+  - Script: `echo SCENARIO_FLAG_42 > /tmp/scenario_flag.txt`
+  - Stdout: (empty)
+  - Stderr: (empty)
+
+
+Read the file /tmp/scenario_flag.txt and tell me what it contains.
\ No newline at end of file
diff --git a/nodes/work/provider_used.json b/nodes/work/provider_used.json
new file mode 100644
index 000000000..17e74f4d1
--- /dev/null
+++ b/nodes/work/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/work/response.md b/nodes/work/response.md
new file mode 100644
index 000000000..eb77286df
--- /dev/null
+++ b/nodes/work/response.md
@@ -0,0 +1,7 @@
+Perfect! The file `/tmp/scenario_flag.txt` contains `SCENARIO_FLAG_42`, which confirms that the sandbox filesystem is indeed shared across command and agent nodes. The setup stage successfully created the file with that content, and we were able to read it, demonstrating that:
+
+1. ✅ The file created in the setup stage persists in the filesystem
+2. ✅ The file is readable from subsequent nodes
+3. ✅ The sandbox filesystem is properly shared across different node types
+
+This validates that the workflow's sandbox environment maintains state across execution stages.
\ No newline at end of file
diff --git a/nodes/work/status.json b/nodes/work/status.json
new file mode 100644
index 000000000..3ca916fc5
--- /dev/null
+++ b/nodes/work/status.json
@@ -0,0 +1,6 @@
+{
+  "status": "success",
+  "notes": "Stage completed: work",
+  "failure_reason": null,
+  "timestamp": "2026-03-19T13:41:07.635959+00:00"
+}
\ No newline at end of file