checkpoint

⚒️ Generated with [Fabro](https://fabro.sh)

nodes/extract_patch/script_invocation.json

@@ -0,0 +1,5 @@
+{
+  "command": "git diff",
+  "language": "shell",
+  "timeout_ms": null
+}

nodes/extract_patch/script_timing.json

@@ -0,0 +1,5 @@
+{
+  "duration_ms": 87,
+  "exit_code": 0,
+  "timed_out": false
+}

nodes/extract_patch/status.json

@@ -0,0 +1,6 @@
+{
+  "status": "success",
+  "notes": "Script completed: git diff",
+  "failure_reason": null,
+  "timestamp": "2026-03-16T12:01:53.176125+00:00"
+}

nodes/solve/diff.patch

@@ -0,0 +1,128 @@
+diff --git a/lib/crates/fabro-agent/src/local_sandbox.rs b/lib/crates/fabro-agent/src/local_sandbox.rs
+index 9798ea3..e93b170 100644
+--- a/lib/crates/fabro-agent/src/local_sandbox.rs
++++ b/lib/crates/fabro-agent/src/local_sandbox.rs
+@@ -71,6 +71,20 @@ impl LocalSandbox {
+     }
+ }
+ 
++#[cfg(unix)]
++async fn set_default_file_permissions(path: &Path) -> Result<(), String> {
++    use std::os::unix::fs::PermissionsExt;
++
++    tokio::fs::set_permissions(path, std::fs::Permissions::from_mode(0o644))
++        .await
++        .map_err(|e| format!("Failed to set permissions on {}: {e}", path.display()))
++}
++
++#[cfg(not(unix))]
++async fn set_default_file_permissions(_path: &Path) -> Result<(), String> {
++    Ok(())
++}
++
+ #[async_trait]
+ impl Sandbox for LocalSandbox {
+     async fn read_file(
+@@ -96,7 +110,8 @@ impl Sandbox for LocalSandbox {
+         }
+         tokio::fs::write(&full_path, content)
+             .await
+-            .map_err(|e| format!("Failed to write {}: {e}", full_path.display()))
++            .map_err(|e| format!("Failed to write {}: {e}", full_path.display()))?;
++        set_default_file_permissions(&full_path).await
+     }
+ 
+     async fn delete_file(&self, path: &str) -> Result<(), String> {
+@@ -379,6 +394,7 @@ impl Sandbox for LocalSandbox {
+                 local_path.display()
+             )
+         })?;
++        set_default_file_permissions(local_path).await?;
+         Ok(())
+     }
+ 
+@@ -400,6 +416,7 @@ impl Sandbox for LocalSandbox {
+                 full_path.display()
+             )
+         })?;
++        set_default_file_permissions(&full_path).await?;
+         Ok(())
+     }
+ 
+@@ -508,6 +525,13 @@ mod tests {
+     use super::*;
+     use std::path::PathBuf;
+ 
++    #[cfg(unix)]
++    fn file_mode(path: &Path) -> u32 {
++        use std::os::unix::fs::PermissionsExt;
++
++        std::fs::metadata(path).unwrap().permissions().mode() & 0o777
++    }
++
+     fn temp_dir() -> PathBuf {
+         let dir = std::env::temp_dir().join(format!("local_env_test_{}", uuid::Uuid::new_v4()));
+         std::fs::create_dir_all(&dir).unwrap();
+@@ -560,6 +584,62 @@ mod tests {
+         std::fs::remove_dir_all(&dir).unwrap();
+     }
+ 
++    #[cfg(unix)]
++    #[tokio::test]
++    async fn write_file_sets_default_permissions() {
++        use std::os::unix::fs::PermissionsExt;
++
++        let dir = temp_dir();
++        let path = dir.join("private.txt");
++        std::fs::write(&path, "old").unwrap();
++        std::fs::set_permissions(&path, std::fs::Permissions::from_mode(0o600)).unwrap();
++
++        let env = LocalSandbox::new(dir.clone());
++        env.write_file("private.txt", "new").await.unwrap();
++
++        assert_eq!(file_mode(&path), 0o644);
++        std::fs::remove_dir_all(&dir).unwrap();
++    }
++
++    #[cfg(unix)]
++    #[tokio::test]
++    async fn upload_file_from_local_sets_default_permissions() {
++        use std::os::unix::fs::PermissionsExt;
++
++        let dir = temp_dir();
++        let scratch = temp_dir();
++        let src = scratch.join("upload.txt");
++        std::fs::write(&src, "content").unwrap();
++        std::fs::set_permissions(&src, std::fs::Permissions::from_mode(0o600)).unwrap();
++
++        let env = LocalSandbox::new(dir.clone());
++        env.upload_file_from_local(&src, "uploaded.txt").await.unwrap();
++
++        assert_eq!(file_mode(&dir.join("uploaded.txt")), 0o644);
++        std::fs::remove_dir_all(&dir).unwrap();
++        std::fs::remove_dir_all(&scratch).unwrap();
++    }
++
++    #[cfg(unix)]
++    #[tokio::test]
++    async fn download_file_to_local_sets_default_permissions() {
++        use std::os::unix::fs::PermissionsExt;
++
++        let dir = temp_dir();
++        let scratch = temp_dir();
++        let remote = dir.join("remote.txt");
++        let local = scratch.join("downloaded.txt");
++        std::fs::write(&remote, "content").unwrap();
++        std::fs::set_permissions(&remote, std::fs::Permissions::from_mode(0o600)).unwrap();
++
++        let env = LocalSandbox::new(dir.clone());
++        env.download_file_to_local("remote.txt", &local).await.unwrap();
++
++        assert_eq!(file_mode(&local), 0o644);
++        std::fs::remove_dir_all(&dir).unwrap();
++        std::fs::remove_dir_all(&scratch).unwrap();
++    }
++
+     #[tokio::test]
+     async fn file_exists_true() {
+         let dir = temp_dir();