From 25cec18ce81aa51c0dff693a15471b6c66ab7789 Mon Sep 17 00:00:00 2001
From: Eyejoker <phj1081@gmail.com>
Date: Mon, 30 Mar 2026 22:30:42 +0900
Subject: [PATCH] fix: clear arbiter session on each invocation to prevent
 verdict bias

---
 src/paired-execution-context.ts | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/paired-execution-context.ts b/src/paired-execution-context.ts
index faae14a..b71259c 100644
--- a/src/paired-execution-context.ts
+++ b/src/paired-execution-context.ts
@@ -324,6 +324,9 @@ export function preparePairedExecutionContext(args: {
       'sessions',
       `${group.folder}-arbiter`,
     );
+    // Clear arbiter session each invocation — each deadlock is a fresh
+    // judgment call, previous verdicts should not bias the decision.
+    fs.rmSync(arbiterSessionDir, { recursive: true, force: true });
     fs.mkdirSync(arbiterSessionDir, { recursive: true });
     envOverrides.CLAUDE_CONFIG_DIR = arbiterSessionDir;
   }