From 254532458b162b74438558ebed6d2b474b18bbee Mon Sep 17 00:00:00 2001
From: Asep Haryana <asepharyana@users.noreply.github.com>
Date: Sun, 26 Jul 2026 15:49:04 +0700
Subject: [PATCH] Revert "fix: remove /think trigger from prompt, use plain
 assistant prefix"

This reverts commit 7c8f747faf433a0c1a2e2d238da2f852724b744f.
---
 src/application/chat/use_cases.rs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/application/chat/use_cases.rs b/src/application/chat/use_cases.rs
index b8dc1c4..4604966 100644
--- a/src/application/chat/use_cases.rs
+++ b/src/application/chat/use_cases.rs
@@ -89,8 +89,8 @@ pub fn build_prompt(messages: &[ChatMessage], tools: &Option<Vec<ToolDef>>) -> S
         }
     }
 
-    // Generation prompt
-    prompt.push_str("<|im_start|>assistant\n");
+    // Generation prompt: thinking mode (MiniCPM5 native)
+    prompt.push_str("<|im_start|>assistant\n/think\n\n");
     prompt
 }