From b8ec4f6e0e35d73d791b2c6161a8441c1e96d364 Mon Sep 17 00:00:00 2001
From: dylan <dylan@init4.technology>
Date: Mon, 11 Aug 2025 14:56:59 -0600
Subject: [PATCH 1/2] refactor: pull submit logic into `builder_helper` module

- pulls the submit logic into its own module to prepare for addition of a
Flashbots module and corresponding submission destination
---
 bin/builder.rs                                         | 5 ++---
 src/tasks/submit/builder_helper/mod.rs                 | 2 ++
 src/tasks/submit/{task.rs => builder_helper/submit.rs} | 7 ++++---
 src/tasks/submit/mod.rs                                | 4 ++--
 4 files changed, 10 insertions(+), 8 deletions(-)
 create mode 100644 src/tasks/submit/builder_helper/mod.rs
 rename src/tasks/submit/{task.rs => builder_helper/submit.rs} (98%)

diff --git a/bin/builder.rs b/bin/builder.rs
index 2cda519d..9275e3e6 100644
--- a/bin/builder.rs
+++ b/bin/builder.rs
@@ -2,8 +2,7 @@ use builder::{
     config::BuilderConfig,
     service::serve_builder,
     tasks::{
-        block::sim::Simulator, cache::CacheTasks, env::EnvTask, metrics::MetricsTask,
-        submit::SubmitTask,
+        block::sim::Simulator, cache::CacheTasks, env::EnvTask, metrics::MetricsTask, submit::BuilderHelperTask,
     },
 };
 use init4_bin_base::{
@@ -51,7 +50,7 @@ async fn main() -> eyre::Result<()> {
     let (tx_channel, metrics_jh) = metrics.spawn();
 
     // Make a Tx submission task
-    let submit = SubmitTask {
+    let submit = BuilderHelperTask {
         zenith,
         quincey,
         config: config.clone(),
diff --git a/src/tasks/submit/builder_helper/mod.rs b/src/tasks/submit/builder_helper/mod.rs
new file mode 100644
index 00000000..3496ba2b
--- /dev/null
+++ b/src/tasks/submit/builder_helper/mod.rs
@@ -0,0 +1,2 @@
+mod submit;
+pub use submit::{BuilderHelperTask, ControlFlow};
diff --git a/src/tasks/submit/task.rs b/src/tasks/submit/builder_helper/submit.rs
similarity index 98%
rename from src/tasks/submit/task.rs
rename to src/tasks/submit/builder_helper/submit.rs
index a97548d7..3917317a 100644
--- a/src/tasks/submit/task.rs
+++ b/src/tasks/submit/builder_helper/submit.rs
@@ -65,9 +65,10 @@ pub enum ControlFlow {
     Done,
 }
 
-/// Submits sidecars in ethereum txns to mainnet ethereum
+/// Submits rollup blocks as blob sidecars in ethereum txns to
+/// mainnet ethereum by crafting a `BuilderHelper` contract call.
 #[derive(Debug)]
-pub struct SubmitTask {
+pub struct BuilderHelperTask {
     /// Zenith
     pub zenith: ZenithInstance,
     /// Quincey
@@ -80,7 +81,7 @@ pub struct SubmitTask {
     pub outbound_tx_channel: mpsc::UnboundedSender<TxHash>,
 }
 
-impl SubmitTask {
+impl BuilderHelperTask {
     /// Get the provider from the zenith instance
     const fn provider(&self) -> &HostProvider {
         self.zenith.provider()
diff --git a/src/tasks/submit/mod.rs b/src/tasks/submit/mod.rs
index 1aa0d75d..13ca37c5 100644
--- a/src/tasks/submit/mod.rs
+++ b/src/tasks/submit/mod.rs
@@ -4,5 +4,5 @@ pub use prep::{Bumpable, SubmitPrep};
 mod sim_err;
 pub use sim_err::{SimErrorResp, SimRevertKind};
 
-mod task;
-pub use task::{ControlFlow, SubmitTask};
+mod builder_helper;
+pub use builder_helper::{BuilderHelperTask, ControlFlow};

From 98597f2e0419b96e92f1ee5347910e459f6366b7 Mon Sep 17 00:00:00 2001
From: dylan <dylan@init4.technology>
Date: Mon, 8 Sep 2025 12:06:29 -0400
Subject: [PATCH 2/2] fmt

---
 bin/builder.rs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/bin/builder.rs b/bin/builder.rs
index 9275e3e6..29b770e4 100644
--- a/bin/builder.rs
+++ b/bin/builder.rs
@@ -2,7 +2,8 @@ use builder::{
     config::BuilderConfig,
     service::serve_builder,
     tasks::{
-        block::sim::Simulator, cache::CacheTasks, env::EnvTask, metrics::MetricsTask, submit::BuilderHelperTask,
+        block::sim::Simulator, cache::CacheTasks, env::EnvTask, metrics::MetricsTask,
+        submit::BuilderHelperTask,
     },
 };
 use init4_bin_base::{