Refactor code structure for improved readability and maintainability

data/pdf_chunks/page_3.txt

@@ -0,0 +1,85 @@
+=== 第 3 页切片结果 ===
+图片: page_3.png
+MD5: 1ce32bc780c7e9192ce48acc2b9f7dea
+文本长度: 1089 字符
+切片大小: 500 字符
+切片数量: 3 个
+
+--- Chunk 0 ---
+长度: 499 字符
+内容:
+&!5678
+’
+!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+&$!!34RS
+’
+!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+&$!$!!569-
+’
+!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+&$!$"!56:;<f
+’
+!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+&$!$#!56=>
+’
+!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+&$"!V/WXYZ[?56!@%$!$!"
+(
+!!!!!!!!!!!!!!!!!!!!!!!!!
+&$#!‘a’b56!@%$!$""
+(
+!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+&$%!AB56!@%$"#%$&$%$""
+(
+!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+&$&!ghij56!@%$#$!"
+(
+!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+&$’!ghkl56!@%$#$""
+(
+!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+--- Chunk 1 ---
+长度: 500 字符
+内容:
+&$(!pq+56!@%$#$&"
+(
+!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+&$)!str/’56!@%$%$!"
+(
+!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+&$*!C"uv?r/’56!@%$%$"$!"
+(
+!!!!!!!!!!!!!!!!!!!!!!!!
+&$!+!CNuv?r/’56!@%$%$"$""
+)
+!!!!!!!!!!!!!!!!!!!!!!!!
+&$!!!DEFef56!@%$&$#$""
+*
+!!!!!!!!!!!!!!!!!!!!!!!!!!!
+&$!"!DEFnyGH56!@%$&$#$&"
+*
+!!!!!!!!!!!!!!!!!!!!!!!!!
+&$!#!?@IJnyGH56!@%$&$%$""
+!+
+!!!!!!!!!!!!!!!!!!!!!!!
+&$!%!%&56!@%$&$&"
+!+
+!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+&$!&!’()*+z’56!@%$&$’"
+!+
+!!!!!!!!!!!!!!!!!!!!!!!!!
+&$!’!JKLMef56!@%$&$("
+!+
+!!!!!
+
+--- Chunk 2 ---
+长度: 89 字符
+内容:
+!!!!!!!!!!!!!!!!!!!!!
+&$!(!BCDKLf56!@%$&$)$""
+!+
+!!!!!!!!!!!!!!!!!!!!!!!!!
+#
+!"!"#"#!$%%&
+