diff --git a/run.json b/run.json
index 333d1f1e9..346ef5ec2 100644
--- a/run.json
+++ b/run.json
@@ -517,7 +517,7 @@
     "kind": "running"
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   "status_updated_at": "2026-05-22T16:24:39.491918Z",
-  "last_event_at": "2026-05-22T16:24:41.778358Z",
+  "last_event_at": "2026-05-22T16:24:50.787103Z",
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   "checkpoints": [
     {
@@ -558,31 +558,91 @@
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+      "seq": 27,
       "checkpoint": {
-        "timestamp": "2026-05-22T16:24:43.825431Z",
+        "timestamp": "2026-05-22T16:24:50.784587Z",
         "current_node": "toolchain",
         "completed_nodes": [
           "start",
           "toolchain"
         ],
         "node_retries": {},
+        "context_values": {
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+          "current_node": "toolchain",
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+          "command.output": "blob://sha256/fc14b2ba2d770e5cd3169df7a29525c962adfc4cfa3097b9098c63ebd61a748c",
+          "thread.start.current_node": "toolchain",
+          "graph.rankdir": "LR",
+          "graph.goal": "---\ntitle: Add run.checkpoint.skip_git_hooks\ntype: feat\nstatus: active\ndate: 2026-05-22\n---\n\n# Add `run.checkpoint.skip_git_hooks`\n\n## Summary\n\nAdd an opt-in setting:\n\n```toml\n[run.checkpoint]\nskip_git_hooks = true\n```\n\nWhen enabled, Fabro-created run-branch checkpoint commits bypass Git commit hooks. Default remains `false`, preserving current behavior. This setting does not affect Fabro workflow hooks or metadata-branch snapshots.\n\n## Key Changes\n\n- Add `skip_git_hooks: bool` to dense checkpoint settings in `fabro-types`, defaulting to `false`.\n- Add `skip_git_hooks: Option<bool>` to sparse `fabro-config::RunCheckpointLayer` so layered config can distinguish unset from explicit `false`.\n- Update checkpoint layer merging so `exclude_globs` keeps its existing replace/inherit behavior and `skip_git_hooks` uses normal override semantics.\n- Update checkpoint resolution so missing config resolves to `skip_git_hooks = false`.\n- Thread the resolved setting into run-branch checkpoint commit creation.\n- Append the hook-skipping commit option only for Fabro-managed run-branch checkpoint commits, including:\n  - normal lifecycle checkpoint commits in `sandbox_git.rs`\n  - parallel base checkpoint commits through the same helper\n  - parallel branch worktree commits in `handler/parallel.rs`\n- Update OpenAPI `RunCheckpointSettings` and regenerate the TypeScript API client so persisted run settings expose the new field.\n- Update user docs/options reference to document `skip_git_hooks`, its default, and that it does not disable Fabro `[[run.hooks]]`.\n\n## Test Plan\n\n- `fabro-config` tests:\n  - `[run.checkpoint] skip_git_hooks = true` resolves to `true`.\n  - omitted `skip_git_hooks` resolves to `false`.\n  - higher-layer `skip_git_hooks = false` overrides lower-layer `true`.\n  - `exclude_globs` merging behavior remains unchanged.\n- `fabro-workflow` tests:\n  - checkpoint commit command includes the hook-skip option when enabled.\n  - checkpoint commit command omits it when disabled.\n  - parallel branch commit command respects the setting.\n- API/client tests:\n  - `WorkflowSettings` / `RunCheckpointSettings` round-trip includes `skip_git_hooks`.\n  - OpenAPI-generated Rust and TypeScript clients reflect the new boolean field.\n- Regression:\n  - existing git checkpoint tests still pass, including metadata branch tests.\n\n## Assumptions\n\n- The setting applies to Git commit hooks for run-branch checkpoint commits; it does not change metadata-branch behavior because metadata snapshots already use `git2` and do not fire local hooks.\n- The setting does not disable Fabro lifecycle hooks under `[[run.hooks]]`.\n- Default `false` is required for backward compatibility.\n",
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+          "failure_class": "",
+          "internal.fidelity": "compact",
+          "internal.run_id": "01KS880W1T9NYP4G0VPBSR2D5G",
+          "graph.model_stylesheet": "\n            * { model: claude-opus-4-7; }\n        ",
+          "internal.thread_id": "start",
+          "internal.retry_count.toolchain": 0,
+          "internal.work_dir": "/home/daytona/workspace/fabro",
+          "outcome": "succeeded"
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+            "notes": "Script completed: command -v cargo >/dev/null || { curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y && sudo ln -sf $HOME/.cargo/bin/* /usr/local/bin/; }; cargo --version 2>&1",
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+        "next_node_id": "preflight_compile",
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+          "start": 1
+        }
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+      "diff": {
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+          "deletions": 0
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+      }
+    },
+    {
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+      "checkpoint": {
+        "timestamp": "2026-05-22T16:27:13.911334Z",
+        "current_node": "preflight_compile",
+        "completed_nodes": [
+          "start",
+          "toolchain",
+          "preflight_compile"
+        ],
+        "node_retries": {},
         "context_values": {
           "graph.model_stylesheet": "\n            * { model: claude-opus-4-7; }\n        ",
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-          "command.output": "blob://sha256/fc14b2ba2d770e5cd3169df7a29525c962adfc4cfa3097b9098c63ebd61a748c",
+          "command.output": "blob://sha256/12ae32cb1ec02d01eda3581b127c1fee3b0dc53572ed6baf239721a03d82e126",
           "internal.run_id": "01KS880W1T9NYP4G0VPBSR2D5G",
           "graph.goal": "---\ntitle: Add run.checkpoint.skip_git_hooks\ntype: feat\nstatus: active\ndate: 2026-05-22\n---\n\n# Add `run.checkpoint.skip_git_hooks`\n\n## Summary\n\nAdd an opt-in setting:\n\n```toml\n[run.checkpoint]\nskip_git_hooks = true\n```\n\nWhen enabled, Fabro-created run-branch checkpoint commits bypass Git commit hooks. Default remains `false`, preserving current behavior. This setting does not affect Fabro workflow hooks or metadata-branch snapshots.\n\n## Key Changes\n\n- Add `skip_git_hooks: bool` to dense checkpoint settings in `fabro-types`, defaulting to `false`.\n- Add `skip_git_hooks: Option<bool>` to sparse `fabro-config::RunCheckpointLayer` so layered config can distinguish unset from explicit `false`.\n- Update checkpoint layer merging so `exclude_globs` keeps its existing replace/inherit behavior and `skip_git_hooks` uses normal override semantics.\n- Update checkpoint resolution so missing config resolves to `skip_git_hooks = false`.\n- Thread the resolved setting into run-branch checkpoint commit creation.\n- Append the hook-skipping commit option only for Fabro-managed run-branch checkpoint commits, including:\n  - normal lifecycle checkpoint commits in `sandbox_git.rs`\n  - parallel base checkpoint commits through the same helper\n  - parallel branch worktree commits in `handler/parallel.rs`\n- Update OpenAPI `RunCheckpointSettings` and regenerate the TypeScript API client so persisted run settings expose the new field.\n- Update user docs/options reference to document `skip_git_hooks`, its default, and that it does not disable Fabro `[[run.hooks]]`.\n\n## Test Plan\n\n- `fabro-config` tests:\n  - `[run.checkpoint] skip_git_hooks = true` resolves to `true`.\n  - omitted `skip_git_hooks` resolves to `false`.\n  - higher-layer `skip_git_hooks = false` overrides lower-layer `true`.\n  - `exclude_globs` merging behavior remains unchanged.\n- `fabro-workflow` tests:\n  - checkpoint commit command includes the hook-skip option when enabled.\n  - checkpoint commit command omits it when disabled.\n  - parallel branch commit command respects the setting.\n- API/client tests:\n  - `WorkflowSettings` / `RunCheckpointSettings` round-trip includes `skip_git_hooks`.\n  - OpenAPI-generated Rust and TypeScript clients reflect the new boolean field.\n- Regression:\n  - existing git checkpoint tests still pass, including metadata branch tests.\n\n## Assumptions\n\n- The setting applies to Git commit hooks for run-branch checkpoint commits; it does not change metadata-branch behavior because metadata snapshots already use `git2` and do not fire local hooks.\n- The setting does not disable Fabro lifecycle hooks under `[[run.hooks]]`.\n- Default `false` is required for backward compatibility.\n",
           "thread.start.current_node": "toolchain",
           "failure_signature": "",
-          "current_node": "toolchain",
+          "current_node": "preflight_compile",
+          "thread.toolchain.current_node": "preflight_compile",
+          "internal.retry_count.preflight_compile": 0,
           "internal.node_visit_count": 1,
           "internal.retry_count.start": 0,
           "internal.work_dir": "/home/daytona/workspace/fabro",
-          "internal.thread_id": "start",
+          "internal.thread_id": "toolchain",
           "graph.rankdir": "LR"
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         "node_outcomes": {
@@ -594,13 +654,22 @@
             "notes": "Script completed: command -v cargo >/dev/null || { curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y && sudo ln -sf $HOME/.cargo/bin/* /usr/local/bin/; }; cargo --version 2>&1",
             "usage": null
           },
+          "preflight_compile": {
+            "status": "succeeded",
+            "context_updates": {
+              "command.output": "blob://sha256/12ae32cb1ec02d01eda3581b127c1fee3b0dc53572ed6baf239721a03d82e126"
+            },
+            "notes": "Script completed: cargo check -q --workspace 2>&1",
+            "usage": null
+          },
           "start": {
             "status": "succeeded",
             "usage": null
           }
         },
-        "next_node_id": "preflight_compile",
+        "next_node_id": "preflight_lint",
         "node_visits": {
+          "preflight_compile": 1,
           "toolchain": 1,
           "start": 1
         }
@@ -633,7 +702,12 @@
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       "prompt": null,
       "response": null,
-      "completion": null,
+      "completion": {
+        "outcome": "succeeded",
+        "notes": "Script completed: command -v cargo >/dev/null || { curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y && sudo ln -sf $HOME/.cargo/bin/* /usr/local/bin/; }; cargo --version 2>&1",
+        "failure_reason": null,
+        "timestamp": "2026-05-22T16:24:43.824549Z"
+      },
       "provider_used": null,
       "diff": null,
       "script_invocation": {
@@ -641,10 +715,53 @@
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         "language": "shell"
       },
+      "script_timing": {
+        "output": "blob://sha256/fc14b2ba2d770e5cd3169df7a29525c962adfc4cfa3097b9098c63ebd61a748c",
+        "exit_code": 0,
+        "duration_ms": 2040,
+        "termination": "exited",
+        "output_bytes": 36,
+        "live_streaming": true
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+      "parallel_results": null,
+      "output": null,
+      "output_bytes": 36,
+      "live_streaming": true,
+      "termination": "exited",
+      "started_at": "2026-05-22T16:24:41.778131Z",
+      "handler": "command",
+      "timing": {
+        "wall_time_ms": 2046,
+        "inference_time_ms": 0,
+        "tool_time_ms": 0,
+        "active_time_ms": 0
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+      "usage": {
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+        "reasoning_tokens": 0,
+        "cache_read_tokens": 0,
+        "cache_write_tokens": 0
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+      "state": "succeeded"
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+    "preflight_compile@1": {
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+      "prompt": null,
+      "response": null,
+      "completion": null,
+      "provider_used": null,
+      "diff": null,
+      "script_invocation": {
+        "script": "cargo check -q --workspace 2>&1",
+        "command": "exec 2>&1\ncargo check -q --workspace 2>&1",
+        "language": "shell"
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       "script_timing": null,
       "parallel_results": null,
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-      "started_at": "2026-05-22T16:24:41.778131Z",
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diff --git a/stages/002-toolchain@1/output.log b/stages/002-toolchain@1/output.log
new file mode 100644
index 000000000..4e86d161d
--- /dev/null
+++ b/stages/002-toolchain@1/output.log
@@ -0,0 +1 @@
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diff --git a/stages/002-toolchain@1/script_timing.json b/stages/002-toolchain@1/script_timing.json
new file mode 100644
index 000000000..0271737be
--- /dev/null
+++ b/stages/002-toolchain@1/script_timing.json
@@ -0,0 +1,8 @@
+{
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+  "live_streaming": true
+}
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diff --git a/stages/002-toolchain@1/status.json b/stages/002-toolchain@1/status.json
new file mode 100644
index 000000000..c77477cd9
--- /dev/null
+++ b/stages/002-toolchain@1/status.json
@@ -0,0 +1,6 @@
+{
+  "outcome": "succeeded",
+  "notes": "Script completed: command -v cargo >/dev/null || { curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y && sudo ln -sf $HOME/.cargo/bin/* /usr/local/bin/; }; cargo --version 2>&1",
+  "failure_reason": null,
+  "timestamp": "2026-05-22T16:24:43.824549Z"
+}
\ No newline at end of file
diff --git a/stages/003-preflight_compile@1/script_invocation.json b/stages/003-preflight_compile@1/script_invocation.json
new file mode 100644
index 000000000..d3abb832f
--- /dev/null
+++ b/stages/003-preflight_compile@1/script_invocation.json
@@ -0,0 +1,5 @@
+{
+  "script": "cargo check -q --workspace 2>&1",
+  "command": "exec 2>&1\ncargo check -q --workspace 2>&1",
+  "language": "shell"
+}
\ No newline at end of file