From 04664ab514a4b0db26be5860bed388b1c9a8e495 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E7=A8=8B=E6=99=BA=E8=B6=850668000959?=
 <cheng.zhichao@xydigit.com>
Date: Wed, 3 Jun 2026 16:46:32 +0800
Subject: [PATCH] fix(session): tighten main-session alias detection to exact
 3-part format

Only match agent:X:main, not agent:X:direct:main or agent:X:slack:channel:main. Review feedback from afjcjsbx.
---
 pkg/memory/jsonl.go | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/pkg/memory/jsonl.go b/pkg/memory/jsonl.go
index 463aec0e0..3b2f9ff3f 100644
--- a/pkg/memory/jsonl.go
+++ b/pkg/memory/jsonl.go
@@ -268,9 +268,13 @@ func isMainSessionAlias(alias string) bool {
 	if alias == "" {
 		return false
 	}
-	// Legacy form: "agent:main:main" (case-insensitive)
+	// Legacy form: "agent:main:main" (exactly 3 colon-separated parts)
+	// Must not match "agent:sales:direct:main" etc.
 	if strings.HasPrefix(alias, "agent:") && strings.HasSuffix(alias, ":main") {
-		return true
+		parts := strings.SplitN(alias, ":", 4)
+		if len(parts) == 3 {
+			return true
+		}
 	}
 	// Opaque form: "sk_v1_" + SHA256("agent:main:main")
 	if strings.HasPrefix(alias, "sk_v1_") {