From 81758b9a54b8aa2e094a6a58cded5a2ae51ad59e Mon Sep 17 00:00:00 2001
From: zhi <zhi@dev.hangman-lab.top>
Date: Sat, 28 Feb 2026 19:24:50 +0000
Subject: [PATCH] fix: use systemPrompt instead of prependContext for end
 marker instruction

- Change before_prompt_build hook to return systemPrompt instead of prependContext
- This ensures the end marker instruction is injected once per session as a system prompt, not repeatedly prepended to each user message
- Add moderatorBotToken to CONFIG.example.json for documentation
---
 docs/CONFIG.example.json | 3 ++-
 plugin/index.ts          | 4 ++--
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/docs/CONFIG.example.json b/docs/CONFIG.example.json
index d14f120..a18ed96 100644
--- a/docs/CONFIG.example.json
+++ b/docs/CONFIG.example.json
@@ -22,7 +22,8 @@
           "debugLogChannelIds": [],
           "discordControlApiBaseUrl": "http://127.0.0.1:8790",
           "discordControlApiToken": "<DISCORD_CONTROL_AUTH_TOKEN>",
-          "discordControlCallerId": "agent-main"
+          "discordControlCallerId": "agent-main",
+          "moderatorBotToken": "<MODERATOR_BOT_TOKEN>"
         }
       }
     }
diff --git a/plugin/index.ts b/plugin/index.ts
index 2dd9411..0959331 100644
--- a/plugin/index.ts
+++ b/plugin/index.ts
@@ -726,8 +726,8 @@ export default {
         if (idStr) identity = idStr + "\n\n";
       }
 
-      api.logger.info(`whispergate: prepend end marker instruction for session=${key}, reason=${rec.decision.reason} isGroupChat=${isGroupChat}`);
-      return { prependContext: identity + instruction };
+      api.logger.info(`whispergate: set system prompt for session=${key}, reason=${rec.decision.reason} isGroupChat=${isGroupChat}`);
+      return { systemPrompt: identity + instruction };
     });
 
     // Register slash commands for Discord