From 5a86d6822849552afe4853601751a5b2f530d843 Mon Sep 17 00:00:00 2001
From: Admin <admin@viaeon.com>
Date: Fri, 17 Jul 2026 12:33:49 +0000
Subject: [PATCH] debug: print full CHARS mapping and all 51 indices

---
 internal/captcha/handler.go | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/internal/captcha/handler.go b/internal/captcha/handler.go
index f68bbc5..0f064d5 100644
--- a/internal/captcha/handler.go
+++ b/internal/captcha/handler.go
@@ -422,6 +422,13 @@ func decodeMathFromOutput(output []float32) string {
 	}
 
 	CHARS := "0123456789+-*/÷×=?"
+	
+	// DEBUG: 打印字符集每个字符的索引和 rune 值
+	fmt.Printf("DEBUG CHARS: ")
+	for i, c := range CHARS {
+		fmt.Printf("[%d]=%c(rune:%d) ", i+1, c, c)
+	}
+	fmt.Println()
 
 	// 先收集所有时间步的 argmax 结果，用于调试
 	allChars := make([]int, T)
@@ -452,8 +459,8 @@ func decodeMathFromOutput(output []float32) string {
 	}
 	fmt.Println(debugStr)
 
-	// 打印原始索引值
-	fmt.Printf("DEBUG raw indices: %v\n", allChars[:20])
+	// 打印原始索引值（全部 51 个）
+	fmt.Printf("DEBUG raw indices (all %d): %v\n", len(allChars), allChars)
 
 	// CTC 解码: 跳过 blank (index 0) 和连续重复
 	result := ""