From 2afa7a6cf9effa17f5fbe1c31f6cd907f3b2827f Mon Sep 17 00:00:00 2001
From: ZhouYongyou <128128010+zhouyongyou@users.noreply.github.com>
Date: Wed, 5 Nov 2025 01:05:13 +0800
Subject: [PATCH] fix(decision): correct Unicode regex escaping in
 reInvisibleRunes
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

## Critical Fix

### Problem
- ❌ `regexp.MustCompile(`[\u200B...]`)` (backticks = raw string)
- Raw strings don't parse \uXXXX escape sequences in Go
- Regex was matching literal text "\u200B" instead of Unicode characters

### Solution
- ✅ `regexp.MustCompile("[\u200B...]")` (double quotes = parsed string)
- Double quotes properly parse Unicode escape sequences
- Now correctly matches U+200B (zero-width space), U+200C, U+200D, U+FEFF

## Impact
- Zero-width characters are now properly removed before JSON parsing
- Prevents invisible character corruption in AI responses
- Fixes potential JSON parsing failures

## Related
- Same fix applied to z-dev in commit db7c035
---
 decision/engine.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/decision/engine.go b/decision/engine.go
index 7008548e..bcfdbc7c 100644
--- a/decision/engine.go
+++ b/decision/engine.go
@@ -20,7 +20,7 @@ var (
 	reJSONArray      = regexp.MustCompile(`(?is)\[\s*\{.*?\}\s*\]`)
 	reArrayHead      = regexp.MustCompile(`^\[\s*\{`)
 	reArrayOpenSpace = regexp.MustCompile(`^\[\s+\{`)
-	reInvisibleRunes = regexp.MustCompile(`[\u200B\u200C\u200D\uFEFF]`)
+	reInvisibleRunes = regexp.MustCompile("[\u200B\u200C\u200D\uFEFF]")
 )
 
 // PositionInfo 持仓信息