From d05a8dec495713a09bbe7ed8d73c480758d49910 Mon Sep 17 00:00:00 2001
From: Daniel M <Koshkoshinsk@users.noreply.github.com>
Date: Tue, 24 Mar 2026 15:21:13 +0000
Subject: [PATCH] fix: refresh stale agent-runner source cache on code changes

Closes #1361

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
---
 src/container-runner.ts | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/src/container-runner.ts b/src/container-runner.ts
index 1dc607f..47a8387 100644
--- a/src/container-runner.ts
+++ b/src/container-runner.ts
@@ -191,8 +191,17 @@ function buildVolumeMounts(
     group.folder,
     'agent-runner-src',
   );
-  if (!fs.existsSync(groupAgentRunnerDir) && fs.existsSync(agentRunnerSrc)) {
-    fs.cpSync(agentRunnerSrc, groupAgentRunnerDir, { recursive: true });
+  if (fs.existsSync(agentRunnerSrc)) {
+    const srcIndex = path.join(agentRunnerSrc, 'index.ts');
+    const cachedIndex = path.join(groupAgentRunnerDir, 'index.ts');
+    const needsCopy =
+      !fs.existsSync(groupAgentRunnerDir) ||
+      !fs.existsSync(cachedIndex) ||
+      (fs.existsSync(srcIndex) &&
+        fs.statSync(srcIndex).mtimeMs > fs.statSync(cachedIndex).mtimeMs);
+    if (needsCopy) {
+      fs.cpSync(agentRunnerSrc, groupAgentRunnerDir, { recursive: true });
+    }
   }
   mounts.push({
     hostPath: groupAgentRunnerDir,