From 1ee791e2b588580fb7bff7c71a8385bc4bdfe0db Mon Sep 17 00:00:00 2001
From: ZhouYongyou <128128010+zhouyongyou@users.noreply.github.com>
Date: Tue, 4 Nov 2025 22:29:27 +0800
Subject: [PATCH] fix(decision): handle fullwidth JSON characters from AI
 responses
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

## Problem
AI occasionally outputs fullwidth (全角) characters in JSON responses,
causing JSON parsing failures even though content is logically correct.

Example error:
  JSON format validation failed: actual [ {"symbol": "BTCU...
  (displays as fullwidth: ［｛"symbol"："BTCU...)

## Root Cause
Claude API can output fullwidth characters when:
- Processing Chinese context
- Mixing languages in responses
- Input method artifacts

## Current Protection
Already handles curly quotes but not brackets/punctuation

## Solution
Extend fixMissingQuotes() to handle fullwidth JSON syntax:
- Brackets: ［］ -> []
- Braces: ｛｝ -> {}
- Colon: ： -> :
- Comma: ， -> ,

## Impact
- Prevents intermittent JSON parsing failures
- No performance impact (simple string replace)
- Does not affect correctly formatted responses

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
---
 decision/engine.go | 12 +++++++++++-
 nofx.db            |  0
 2 files changed, 11 insertions(+), 1 deletion(-)
 create mode 100644 nofx.db

diff --git a/decision/engine.go b/decision/engine.go
index 65df3488..b8c2ecdc 100644
--- a/decision/engine.go
+++ b/decision/engine.go
@@ -534,12 +534,22 @@ func validateJSONFormat(jsonStr string) error {
 	return nil
 }
 
-// fixMissingQuotes 替换中文引号为英文引号（避免输入法自动转换）
+// fixMissingQuotes 替换中文引号和全角符号为英文半角符号（避免AI输出或输入法自动转换导致JSON解析失败）
 func fixMissingQuotes(jsonStr string) string {
+	// 替换中文引号
 	jsonStr = strings.ReplaceAll(jsonStr, "\u201c", "\"") // "
 	jsonStr = strings.ReplaceAll(jsonStr, "\u201d", "\"") // "
 	jsonStr = strings.ReplaceAll(jsonStr, "\u2018", "'")  // '
 	jsonStr = strings.ReplaceAll(jsonStr, "\u2019", "'")  // '
+
+	// ⚠️ 替换全角括号、冒号、逗号（防止AI输出全角JSON字符）
+	jsonStr = strings.ReplaceAll(jsonStr, "［", "[") // 全角左方括号 U+FF3B
+	jsonStr = strings.ReplaceAll(jsonStr, "］", "]") // 全角右方括号 U+FF3D
+	jsonStr = strings.ReplaceAll(jsonStr, "｛", "{") // 全角左花括号 U+FF5B
+	jsonStr = strings.ReplaceAll(jsonStr, "｝", "}") // 全角右花括号 U+FF5D
+	jsonStr = strings.ReplaceAll(jsonStr, "：", ":") // 全角冒号 U+FF1A
+	jsonStr = strings.ReplaceAll(jsonStr, "，", ",") // 全角逗号 U+FF0C
+
 	return jsonStr
 }
 
diff --git a/nofx.db b/nofx.db
new file mode 100644
index 00000000..e69de29b