From da885339f9aa3b7f152ee0deedc4f13b913f4299 Mon Sep 17 00:00:00 2001
From: MythEclipse <asepharyanalm001@gmail.com>
Date: Sat, 6 Jun 2026 13:55:24 +0700
Subject: [PATCH] fix(ai-moderation): remove user history from prompt to
 eliminate confirmation bias loop
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

user_history (riwayat flag sebelumnya) dan clean_streak/total_infractions
dikirim ke LLM setiap kali menganalisis pesan — ini bikin self-fulfilling
prophecy: user yg pernah kena false positive jadi makin gampang dituduh
lagi, dan link Instagram pun dianggap sexual_deviation cuma karena
riwayat user.

Changes:
- Hapus getUserRecentInfractions dari text batch path
- Hapus getUserRecentInfractions dari media analysis path
- Hapus import getUserRecentInfractions yg gak dipakai
- Ubah instruksi prompt dari 'jadilah lebih tegas jika riwayat jelek'
  jadi 'setiap pesan dinilai berdasarkan isinya sendiri'

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
---
 .../ai-moderation/llmModerationClient.ts      | 23 ++++---------------
 .../modules/ai-moderation/moderationPrompt.ts |  2 +-
 2 files changed, 5 insertions(+), 20 deletions(-)

diff --git a/services/discord-gateway/src/modules/ai-moderation/llmModerationClient.ts b/services/discord-gateway/src/modules/ai-moderation/llmModerationClient.ts
index f8973f7..3141656 100644
--- a/services/discord-gateway/src/modules/ai-moderation/llmModerationClient.ts
+++ b/services/discord-gateway/src/modules/ai-moderation/llmModerationClient.ts
@@ -14,10 +14,7 @@ import type {
 
 import { llmChat, llmVision } from "./llmClient.js";
 import { buildSystemPrompt as buildSystemPromptModular } from "./moderationPrompt.js";
-import {
-  initializeUserReputation,
-  getUserRecentInfractions,
-} from "./userReputationStore.js";
+import { initializeUserReputation } from "./userReputationStore.js";
 import { getChannelCulture } from "./channelCultureStore.js";
 import { logModerationAnalysis, logModerationError } from "./responseLogger.js";
 import {
@@ -1108,19 +1105,12 @@ async function runTextOnlyBatch(
     const batch = subBatches[i];
     const targetIds = batch.map((t) => t.id);
 
-    // Fetch user context for this batch
+    // Abstract user reputation (no history — prevents confirmation bias)
     const userContexts = new Map<string, string>();
     for (const msg of batch) {
       if (!userContexts.has(msg.user_id)) {
         const rep = await initializeUserReputation(msg.user_id, msg.guild_id);
-        const history = await getUserRecentInfractions(msg.user_id);
-        
-        let historyStr = "";
-        if (history.length > 0) {
-          historyStr = `\n  <user_history>\n${history.map(h => `    - Flagged for ${h.flags} (Severity: ${h.severity}) pada pesan: "${h.content}"`).join("\n")}\n  </user_history>`;
-        }
-        
-        const contextStr = `<user_reputation trust_score="${rep.trust_score}" clean_streak="${rep.clean_message_streak}" total_infractions="${rep.total_infractions}" />${historyStr}`;
+        const contextStr = `<user_reputation trust_score="${rep.trust_score}" />`;
         userContexts.set(msg.user_id, contextStr);
       }
     }
@@ -1670,12 +1660,7 @@ async function _runSingleMediaAnalysis(
   const channelCulture = channelCultureObj ? channelCultureObj.culture_summary : undefined;
 
   const rep = await initializeUserReputation(target.user_id, target.guild_id);
-  const history = await getUserRecentInfractions(target.user_id);
-  let historyStr = "";
-  if (history.length > 0) {
-    historyStr = `\n  <user_history>\n${history.map(h => `    - Flagged for ${h.flags} (Severity: ${h.severity}) pada pesan: "${h.content}"`).join("\n")}\n  </user_history>`;
-  }
-  const userCtx = `<user_reputation trust_score="${rep.trust_score}" clean_streak="${rep.clean_message_streak}" total_infractions="${rep.total_infractions}" />${historyStr}`;
+  const userCtx = `<user_reputation trust_score="${rep.trust_score}" />`;
 
   // XML delimiters wrap the message content (R1)
   const messageBlock = `<message id="${target.id}" user="${target.username}">\n  ${userCtx}\n  <content>${content}</content>${mediaContext ? ` ${mediaContext}` : ""}${webContext}${mediaAnalysisContext}\n</message>`;
diff --git a/services/discord-gateway/src/modules/ai-moderation/moderationPrompt.ts b/services/discord-gateway/src/modules/ai-moderation/moderationPrompt.ts
index bf6eb5e..f0953d6 100644
--- a/services/discord-gateway/src/modules/ai-moderation/moderationPrompt.ts
+++ b/services/discord-gateway/src/modules/ai-moderation/moderationPrompt.ts
@@ -455,7 +455,7 @@ export function buildSystemPrompt(options: BuildSystemPromptOptions): string {
     parts.push(`## Kultur Channel (Pembelajaran AI)\n${channelCulture}`);
   }
 
-  parts.push(`## Konteks Pengguna (Ingatan & Kebijaksanaan)\nSetiap pesan mungkin memiliki tag <user_reputation> dan <user_history>. *Gunakan Kebijaksanaan: Jika trust_score tinggi, beri benefit of the doubt pada ambiguitas. Jika trust_score rendah dan memiliki riwayat pelanggaran serupa, jadilah lebih tegas.*`);
+  parts.push(`## Konteks Pengguna\nSetiap pesan mungkin memiliki tag <user_reputation>. Tag ini hanya indikator **referensi**, bukan bukti pelanggaran. Nilai trust_score yang rendah bukan alasan untuk memflag pesan yang bersih. Nilai trust_score yang tinggi bukan alasan untuk mengabaikan pelanggaran nyata. **Setiap pesan harus dinilai berdasarkan isinya sendiri.**`);
 
   parts.push(OUTPUT_INSTRUCTIONS);